CN101350023A

CN101350023A - Method and platform capable of customizing enquiry based on service combination

Info

Publication number: CN101350023A
Application number: CNA2008101192450A
Authority: CN
Inventors: 李先军; 王叶; 余丹; 叶钢; 曾婧娜; 马世龙
Original assignee: Beihang University
Current assignee: Beihang University; Beijing University of Aeronautics and Astronautics
Priority date: 2008-08-29
Filing date: 2008-08-29
Publication date: 2009-01-21
Anticipated expiration: 2028-08-29
Also published as: CN101350023B

Abstract

The invention provides a customizable query method and a platform on the basis of service composition. The method comprises: describing own demands to the platform by a user through an appointed client end visible component and through operations of selecting and filling the attribute value of the component, analyzing the initial state and the target state of a data query request, then, searching and combining a corresponding basic service calling sequence, then, executing basic services in the sequence, thereby obtaining a result set which contains user expected result data, and generating a final result to display to the user through screening, sequencing and assembling. In the method, the user describes own demands to a system actively, the system can effectively adapt different individualized demands of different users through receiving user description and dynamic analysis processing, the application system development work load and the later maintenance cost are lowered, and the friendliness of a data query application system is improved, which enables the user to customize data query actively and enables inquiry to be flexible and convenient.

Description

A kind of customizable querying method and platform based on Services Combination

Technical field

The invention belongs to the computer data management field, be specifically related to a kind of customizable data querying method and platform thereof based on Services Combination.

Background technology

Tradition it is investigated that at every item number asking function provides an independently data query conditions input page by the Web application system based on the data query of Web.The querying condition input page is the inlet of this data query function, and the background logic of page correspondence is fixed, and realizes in system's hard coded mode.For the function that has the complex query condition entry, system provide to the simple queries condition do such as " with " " or " logics such as " non-" splicing, constitute the input mode of complex query condition.

When the user carries out data query, at first the function that provides in system is concentrated the function pages of selecting needs, select, fill in querying condition and submit the data query request to according to system's specific mode then, the last result who in the set form that system returns is replied, obtains care.Indifference between the different user that enters from same data query conditions input page is looked by system, for this class user provides same inquiry service.

There is following problem in this traditional methods:

The first, Gu Ding data query processing mode can not satisfy the user individual query demand.For same function, application system is accepted the initial conditions for the treatment of that the page provides only, and system's output then is the data query result of set form.If the desired querying condition of user is not the condition entry page table entry that system provides, then this query demand can not be accepted by this system; If the user is indifferent to the partial data in the Query Result that system obtains, and wishing that it is filtered is beneficial to data analysis, perhaps wish to give prominence to the key points certain partial data, the fixing output of then this system is the Mode in Query Process of form as a result, can not satisfy this demand with user preference character.

The second, the data query function of application system support is classified in advance, and user's one query action is limited in the page of this query function that provides.If the inquiry classification that the user need carry out is different with the classification of the query function of application system, then this query demand can't be finished in the query page that system provides, the user need repeatedly inquire about in other relevant system's pages, and logically compares a plurality of Query Results that obtain by the user.This mode causes efficiency data query low, and user's workload increases, and system's friendly is poor.

Three, need do hard coded work for every kind of data query function during application system development, workload is big and the duplication of labour is many.

Four, when the data query application system development finish come into operation after, produce if any new functional requirement, system is the change of adaption demand automatically.If solve by the system upgrade mode, also very easily destroy the original framework of system in the time of the labor intensive material resources, make system lose maintainability and extensibility gradually.

The patent No. is 200610059824.1, a kind of method for inquiring customization of performance data is proposed in " a kind of method for inquiring customization of performance data and system ", one or more association attributeses by system customization template given query object are as the template attribute and preserve template, and the user by selecting template also is provided with query argument structure query requests.Server parses goes out template attribute and the query argument that will inquire about, constructs query statement and carries out data base querying.This method user can only select the query pattern of needs in the template that system provides, the template appointment be which kind of attribute data is the result of one query be, model customization work is finished by the system manager, the user can not direct intervention, when the template that provides when system can not satisfy user's query demand, the user still needed repeatedly to inquire about and splices by hand Query Result even can't obtain expected data by this system.The server end query engine is according to carrying out data base querying behind the dynamic constructing SQL statement of described query argument to user data query processing of request mode.The SQL statement that this processing mode generates can't be verified its logic rationality before carrying out, and reasonably SQL statement can not be related with corresponding query function, do not have reusability.

Summary of the invention

The present invention proposes a kind of customizable querying method and platform based on Services Combination, the user is by the client visible assembly of appointment and by selecting, fill in the operation of component property value, to platform self-demand is described, the original state of data query request and dbjective state are resolved go out after, search also is combined into corresponding basic service calling sequence, carry out the basic service in the sequence then, and then obtain comprising the result set of user expectation result data, and generate net result through screening, ordering, assembling back and show to the user.The user is initiatively to the system description self-demand in this method, system is described and dynamic analysis process by receiving the user, the different individual demands that can effectively adapt to different user reduce application system development workload and later maintenance cost, and have improved the friendly of data query application system.Make user's customization data inquiry on one's own initiative, carry out inquiry to such an extent that make things convenient for flexibly.

A kind of customizable querying method based on Services Combination may further comprise the steps:

Step 1: set up customizable inquiring client terminal and data query server, and data in the field are carried out abstract classification, but be the model construction edit control of being set up, deposit the data object model storehouse, field in the customizable inquiring client terminal in, and in the data query server, make up corresponding master data inquiry service, deposit master data inquiry service storehouse in;

Step 2: the template base of the data object model storehouse, field of the customizable inquiring client terminal of initialization and the existing customization function of storage; The user compares self individual demand with the existing function in the template base, satisfy user's masterplate of the function of demand this time if exist, from template base, select the template of specific function, the page is showed the query contents, querying condition of the corresponding customization of function for this reason, display format as a result, and adjustment display format, rewrite the querying condition property value of customization, the new request of structure identical function; Otherwise encapsulate the inquiry of submodule customization data by data object model storehouse, field and customization result;

Step 3: the customization result of customizable inquiring client terminal encapsulates submodule encapsulation customization result; If this customization derives from template base, set the flag of template and represent to derive from existing custom built forms, be shown new customization otherwise set corresponding label table; Be sent to the request queue management submodule of data query server;

Step 4: request queue management submodule receives the data query request that client sends, and joins in the request queue;

Step 5: the request analysis submodule takes out first request in the request queue, resolves this request back acquisition original state, dbjective state, constraint condition and display format as a result; If request queue is not empty, judge whether function a kind of in the template base of this data query, if, then directly obtain its service call sequence by implementation sub-module, change step 8; Otherwise call the Services Combination engine and carry out Services Combination; If request queue is empty, then change step 10;

Step 6: the Services Combination engine is according to original state and dbjective state, call the current master data inquiry service information that can use that service broker's submodule obtains, handle the query script in the original state one by one, under the prerequisite that satisfies pilot process constraint condition, for each query script carries out Services Combination, generate the service call sequence; If the Services Combination failure then forwards step 10 to;

Step 7: by customizing corresponding function of memory module storage and service call sequence to template base;

Step 8: implementation sub-module is according to the master data inquiry service in the sequence call master data inquiry service storehouse of service call flow process sequence, and input/output relation between coordination service; If unusually then forward step 10 to;

Step 9: generate submodule by the result and described the final data of display format generation as a result query analysis result,, carry out the result and show to the client echo reply according to request;

Step 10: generate failure information by the abnormality processing submodule, and return to the client demonstration.

In the described step 1 data are carried out abstract classification is according to OO thought, data are carried out feature extraction; The attribute that the field data object model that takes out is comprised is as the attribute of object model, but each field data object model is written as the edit control of customizable inquiring client terminal in the mode of client script, describes the data query demand of self to application system.

Data object model storehouse, field in the described step 1 comprises logical control, with computing and logical operation the incidence relation between the data object attribute of two or more fields is described, and each logical control is write with script mode.

The master data inquiry service in the master data inquiry service storehouse in the described step 1 is corresponding one by one with the field data object model in data object model storehouse, field, the atomic operation of field data object inquiry is provided, only by one or several attribute of corresponding field data object model, acquisition has the set of the data object example of this attribute from background data base.

Each master data inquiry service in the master data inquiry service storehouse in the described step 1 comprises the atomic operation of an inquiry relating attribute, obtain the associated data object of corresponding field data object and the atomic operation of attribute thereof, the community set of output associated data object and associated data object.

Customization data inquiry in the described step 2 comprises the steps:

Step a: but each edit control on the page of customizable inquiring client terminal, from the control in domain data model storehouse, selected, specify each query contents data object of this inquiry; But select the row of the attribute of each edit control as the result data tabulation of this data query;

Step b: but each edit control on customized web page, from the visual control in domain data model storehouse, selected, specify the condition data object of this inquiry; But property value is selected, filled in to the attribute of each edit control of selection also for this attribute, and the query contents data object of specifying this querying condition of selecting to be used for;

Step c: arrange the sequencing of the control property of selecting, fill customized web page result's data list gauge outfit, and the Sorted list of designated result tabulation;

Steps d: the data query of the new customization of name, preserve this customization, and name the corresponding template of this customization.

Original state in the described step 5 is made up of query script set, Query Result and service calling sequence; The query script set comprises that this user asks the query script of the data object of needs inquiry, and Query Result and service calling sequence are empty.

Dbjective state in the described step 5 is made up of query script set, Query Result and service calling sequence; The query script set is for empty, and Query Result is the target data object of each query script in the query script set, and the service call sequence is the memory headroom of one period free time.

Services Combination in the described step 6 comprises the steps:

Step1: the Services Combination engine extracts the source state of this Services Combination process, comprises target data object, querying condition set and the empty service call sequence of query script; Interpolation source state is to the upstate formation that is used for temporary storaging data;

Step2: if the upstate formation is empty, then export the Services Combination failure information, the Services Combination process finishes; Otherwise change step3;

Step3: taking-up is positioned at the upstate of queue heads as current state from the upstate formation;

Step4: if the querying condition of current state is empty, then export the service call sequence of current state, the Services Combination process finishes; Otherwise the querying condition of current state is stored in the interim formation of storing queries condition;

Step5:, change step2 if interim formation is empty; Otherwise change step6;

Step6: from interim formation, take out the querying condition conduct that is positioned at queue heads and work as precondition, search can be used for when the master data inquiry service of precondition and search its corresponding atomic operation, used if all master data inquiry services are all modulated, then changeed step2; Otherwise change step7;

Step7: the service call sequence of the atomic operation that finds being added to current state with relation of equivalence;

Step8: at the current querying condition of current state, generate the follow-up state of current state, and follow-up state is added the upstate formation, change step5.

When described step8 generates the follow-up state of current state, if when the field data object of precondition correspondence is the destination object of this query script, then precondition work as in deletion from current state, and the state behind precondition will deleted is as the formation of follow-up state adding upstate, and generation finishes; Otherwise, call correlation inquiry atomic operation when the master data inquiry service of precondition correspondence, each relating attribute and property value source is added in the set of acquisition relating attribute respectively, and deletion adds the upstate formation when precondition and as follow-up state from current state; Then handle next relating attribute and all follow-up states are added the upstate formation, all relating attributes have all generated follow-up state in the relating attribute set.

A kind of customizable searching platform based on Services Combination is characterized in that, comprises as lower module:

Customizable inquiring client terminal and the data query server set up; Customizable inquiring client terminal comprises data object model storehouse, field, is used for data in the field are carried out abstract classification, but deposits the edit control for the model construction of being set up in; The data query server comprises master data inquiry service storehouse, but the master data inquiry service of structure and storage edit control correspondence;

Customizable inquiring client terminal comprises that also template base, customization result encapsulate submodule;

Template base, be used for storing existing customization function, after the initialization template base, the user compares self individual demand with the existing function in the template base, satisfy user's masterplate of the function of demand this time if exist, and selects the template of specific function from template base, the page is showed the query contents, querying condition of the corresponding customization of function for this reason, display format as a result, and the adjustment display format, rewrite the querying condition property value of customization, the new request of structure identical function; Otherwise encapsulate the inquiry of submodule customization data by data object model storehouse, field and customization result;

The customization result encapsulates submodule, is used for encapsulating the customization result; If this customization derives from template base, set the flag of template and represent to derive from existing custom built forms, be expressed as new customization otherwise set corresponding flag; Be sent to the request queue management submodule of data query server;

The data query server comprises that also request queue management submodule, request analysis submodule, service broker's submodule, Services Combination engine, customization memory module, implementation sub-module, result generate submodule and abnormality processing submodule;

Request queue management submodule, request queue management submodule receives the data query request that client sends, and joins in the request queue;

The request analysis submodule takes out first request in the request queue, resolves this request back acquisition original state, dbjective state, constraint condition and display format as a result; If request queue is not empty, judge whether function a kind of in the template base of this data query, if, then directly obtain its service call sequence by implementation sub-module, carry out Services Combination otherwise call the Services Combination engine; If request queue is empty, then sends to the abnormality processing submodule and handle;

Service broker's submodule obtains the current master data inquiry service information that can use;

The Services Combination engine, according to original state and dbjective state, call the current master data inquiry service information that can use, handle the query script in the original state one by one, under the prerequisite that satisfies pilot process constraint condition, for each query script carries out Services Combination, generate the service call sequence; If the Services Combination failure then sends to the abnormality processing submodule and handles;

The customization memory module, function that storage is corresponding and service call sequence are to template base;

Implementation sub-module, according to the master data inquiry service in the sequence call master data inquiry service storehouse of service call flow process sequence, and input/output relation between coordination service; If unusual, then send to the abnormality processing submodule and handle;

The result generates submodule, describes the final data of display format generation as a result query analysis result according to request, to the client echo reply, carries out the result and shows;

The abnormality processing submodule generates failure information, and returns to the client demonstration.

In the data object model storehouse, described field, it is according to OO thought that data are carried out abstract classification, and data are carried out feature extraction; The attribute that the field data object model that takes out is comprised is as the attribute of object model, but each field data object model is written as the edit control of customizable inquiring client terminal in the mode of client script, describes the data query demand of self to application system.

Data object model storehouse, described field comprises logical control, with computing and logical operation the incidence relation between the data object attribute of two or more fields is described, and each logical control is write with script mode.

The master data inquiry service in described master data inquiry service storehouse is corresponding one by one with the field data object model in data object model storehouse, field, the atomic operation of field data object inquiry is provided, only by one or several attribute of corresponding field data object model, acquisition has the set of the data object example of this attribute from background data base.

Each master data inquiry service in described master data inquiry service storehouse comprises the atomic operation of an inquiry relating attribute, obtain the associated data object of corresponding field data object and the atomic operation of attribute thereof, the community set of output associated data object and associated data object.

The customization data inquiry that described customizable inquiring client terminal carries out:

But on the page of customizable inquiring client terminal, from the control in domain data model storehouse, select each edit control, specify each query contents data object of this inquiry; But select the row of the attribute of each edit control as the result data tabulation of this data query;

But on customized web page, from the visual control in domain data model storehouse, select each edit control, specify the condition data object of this inquiry; But property value is selected, filled in to the attribute of each edit control of selection also for this attribute, and the query contents data object of specifying this querying condition of selecting to be used for;

Arrange the sequencing of the control property of selecting, fill customized web page result's data list gauge outfit, and the Sorted list of designated result tabulation;

The data query of the new customization of name is preserved this customization, and names the corresponding template of this customization.

The original state that the described request analyzing sub-module obtains is made up of query script set, Query Result and service calling sequence; The query script set comprises that this user asks the query script of the data object of needs inquiry, and Query Result and service calling sequence are empty.

The dbjective state that the described request analyzing sub-module obtains is made up of query script set, Query Result and service calling sequence; The query script set is for empty, and Query Result is the target data object of each query script in the query script set, and the service call sequence is the memory headroom of one period free time.

Described Services Combination engine extracts the source state of this Services Combination process, comprises target data object, querying condition set and the empty service call sequence of query script; Interpolation source state is to the upstate formation that is used for temporary storaging data;

If the upstate formation is empty, then export the Services Combination failure information, the Services Combination process finishes; Otherwise:

From the upstate formation, take out and be positioned at the upstate of queue heads as current state;

If the querying condition of current state is empty, then export the service call sequence of current state, the Services Combination process finishes; Otherwise the querying condition of current state is stored in the interim formation of storing queries condition;

If interim formation be a sky, whether be that sky is judged and handled to the upstate formation; Otherwise:

From interim formation, take out the querying condition conduct that is positioned at queue heads and work as precondition, search can be used for when the master data inquiry service of precondition and search its corresponding atomic operation, whether used if all master data inquiry services are all modulated, be that sky is judged and handled to the upstate formation then; Otherwise:

The atomic operation that finds is added to the service call sequence of current state with relation of equivalence;

At the current querying condition of current state, generate the follow-up state of current state, and follow-up state is added the upstate formation, whether be that sky is judged and handled to interim formation.

The Services Combination process of described Services Combination engine generates the follow-up state of current state, if when the field data object of precondition correspondence is the destination object of this query script, then precondition is worked as in deletion from current state, and the state that will delete behind precondition adds the upstate formation as follow-up state, and generation finishes; Otherwise, call correlation inquiry atomic operation when the master data inquiry service of precondition correspondence, each relating attribute and property value source is added in the set of acquisition relating attribute respectively, and deletion adds the upstate formation when precondition and as follow-up state from current state; Then handle next relating attribute and all follow-up states are added the upstate formation, all relating attributes have all generated follow-up state in the relating attribute set.

The present invention a kind of customizable querying method and platform based on Services Combination, advantage is:

(1) the present invention's employing can successfully manage the diversified data query analyze demands of user by the mode that the user initiatively formulates search purposes, querying condition and the Query Result display format of one query, allow the user according to self-demand query script to be made amendment at any time, and need not to change system architecture.

(2) the present invention adopts the data query basic service to set up mode, is modeled as the basis with the field data abstraction, and using OO thought is that every kind of field data object is set up an independently data query basic service, meets popular thinking logic; Simultaneously in the basic service scope, provide atomic operation, represent different input-outputs right, make the inner different clear differentiation of inquiry mode of service; Atomic operation is set up and is comprised that not only a kind of attribute query by the field data object has all spectra data object example of this property value, and comprise by all spectra data object example that has these property values usually as a plurality of attribute queries of federation properties, avoided improving search efficiency only providing single attribute when inquiry to the repeatedly query manipulation of background data base and the operation that a plurality of data query results are got common factor.

(3) based on Services Combination technical construction data query processing logic, under the condition of the original state of given Services Combination flow process and dbjective state, the synthetic calling sequence of the service that can dynamically generate, the changeable data query request of reply customization client automatically.

Description of drawings

Fig. 1 is the method flow diagram of a kind of customizable querying method based on Services Combination of the present invention;

Fig. 2 is the platform structure figure of a kind of customizable searching platform based on Services Combination of the present invention;

Fig. 3 is the process flow diagram of the customization data query function of a kind of customizable querying method based on Services Combination of the present invention;

Fig. 4 is the customization of a kind of customizable querying method based on Services Combination of the present invention formalized description figure of xml as a result;

Fig. 5 is the Services Combination process flow diagram of a kind of customizable querying method based on Services Combination of the present invention;

Fig. 6 is the process flow diagram of the follow-up state of generation of a kind of customizable querying method based on Services Combination of the present invention;

Fig. 7 is the customization result of the xml form among the embodiment of a kind of customizable querying method based on Services Combination of the present invention;

Fig. 8 is the state transition graph of the service call sequence generative process among the embodiment of a kind of customizable querying method based on Services Combination of the present invention.

Embodiment

The present invention proposes a kind of customizable querying method and platform based on Services Combination, support the user to the system description self-demand, the master data inquiry service is dynamically assembled according to user's request by system, the composite services that the master data inquiry service calling sequence that generation can be met consumers' demand constitutes are carried out composite services and are showed the data query analysis result according to user expectation.

A kind of customizable searching platform based on Services Combination as shown in Figure 2, comprises customizable inquiring client terminal and data query server two parts.

The customizable data inquiring client terminal comprises that template base, data object model storehouse, field, customization result encapsulate submodule.

Template base is used for providing to the user typical data query function of this system's storage.Template base is the set of existing data query function in the platform, derives from the customization that the system that is stored in background data base that the customization sub module stored reads successfully handled early stage.The user selects function in the template base, makes the page be shown as query contents, the querying condition of this function correspondence, the displaying of Query Result form.

Data object model storehouse, field provides field data object model visual control and logical control.

The customization result encapsulates submodule the user is converted to formalized description with the personalized enquire demand of visual means customization on client.

Template base provides existing data query function in the platform, in the elder generation query template storehouse whether the data query functional template that meets self-demand is arranged during user inquiring, there is the template that satisfies the demands then to choose this template, revise corresponding contents in the template, output customization result encapsulates submodule to customizing the result, the customization result encapsulates submodule the visualization result of customization is encapsulated as the xml description, and sends to the data query server as the parameter of HTTP request; If the template that does not satisfy the demands, then turn to data object model storehouse, field, the user selects the field data object control and the attribute thereof of query contents, querying condition correspondence respectively from data object model storehouse, field, and fill in property value when needed, specific data query analysis result's display format, output to the customization result and encapsulate submodule, and still encapsulate submodule and the visualization result of customization is encapsulated as xml describes, and send to the data query server as the parameter of HTTP request by the customization result.

The data query server comprises that service broker's submodule, request queue management submodule, request analysis submodule, Services Combination engine, implementation sub-module, result generate submodule, customization sub module stored, abnormality processing submodule and master data inquiry service storehouse.Wherein:

Service broker's submodule is used for the basic service of management domain data query.

Each master data inquiry service in master data inquiry service storehouse need be registered to service broker's submodule, provide and self specific domain object model is carried out information inquiring, and, the whole basic query operations to such field data object model that this service provides are described can accept the mode of parameter.The master data inquiry service can be added where necessary, need to guarantee that new master data inquiry service does not exist with original master data inquiry service to conflict, and is published to service broker's submodule with the consistent mode of the issue of aforementioned master data inquiry service.

Request queue management submodule is used to receive the data query analysis request that the data query client sends, and these requests of buffer memory.

The request analysis submodule is used for the request of resolution data query analysis, and the entrained customization result of request that customizable inquiring client terminal is sent is converted to the Services Combination engine and can understands the data query request.

The details of the available service that provides in conjunction with service broker's submodule is provided the Services Combination engine, and the analysis result according to the request analysis module is transmitted generates the service call sequence that can satisfy the demands one by one at the query script that comprises among the result.

Implementation sub-module is used for the service call sequence according to the generation of Services Combination engine, carries out the service in the sequence successively.

The result generates submodule and is used for the result of implementation sub-module output is replied according to the generation of the form as a result HTTP of customization.

The customization sub module stored is used to store the function of this customization, and the processing mode of customization function.

The abnormality processing submodule be used for the request analysis module can't the resolution data query requests, the Services Combination engine can't generate the service sequences of meeting consumers' demand, when execution module is carried out serv-fail, return error message to the data query client.

Each master data inquiry service in the master data inquiry service storehouse provides self information to service broker's submodule, comprises corresponding field data object type and available atomic operation.Service broker's submodule becomes current available master data inquiry service tabulation with all master data inquiry service maintenances of information of its acquisition, for the Services Combination engine queries.

The request queue management submodule of data query processing server receives the customization result and encapsulates the data query request that submodule sends, and buffers into request queue.The request analysis submodule takes out and is positioned at the request of request queue head, and therefrom parses the original state and the dbjective state of this request, and analysis result is sent to the Services Combination engine.The information of the current available master data inquiry service that Services Combination engine acquisition service broker submodule provides, original state and dbjective state according to request, generation can be handled this data query requested service calling sequence, and will generate the result and transfer to implementation sub-module and carry out.Implementation sub-module is carried out each master data inquiry service according to the service call sequence order that the Services Combination engine generates, and generates the data object example collection that submodule output comprises the user expectation result to the result.The result generates submodule extracts appointment among the customization result from the result of execution module output content to be displayed, and the sortord of appointment ordering during according to customization with content to be displayed, html page is replied in generation, and returns HTTP to the customizable data inquiring client terminal and reply.The request analysis module can't the resolution data query requests, the Services Combination engine can't generate the service sequences of meeting consumers' demand, when execution module is carried out serv-fail, the abnormality processing submodule will be caught these failure informations, and the data query client is returned error message.

A kind of customizable querying method based on Services Combination as shown in Figure 1, comprises the steps:

Step 1: domain analysis, data in the field are carried out abstract classification, but be the edit control of the customizable inquiring client terminal of model construction set up, deposit data object model storehouse, field in, and make up corresponding master data inquiry service storehouse.Object control in the data object model storehouse, the corresponding field of each master data inquiry service in the master data inquiry service storehouse.The master data inquiry service is the set of a plurality of atomic operations.Atomic operation represents an input-output right, and input is one or several attributes of field data object model, and output is the set with example of the field data object model of specifying the input attributes value.Each attribute that atomic operation is included as the object control provides according to this attribute query field data object example and unites according to several attributes simultaneously and obtains data object example dual mode.The attribute of the described associating of the latter the attribute of when carrying out demand analysis, considering, often joined together wherein as the one query condition.

Step 2: the customizable inquiring client terminal of initialization, the i.e. template base of the data object model storehouse, field of the customizable inquiring client terminal of initialization and the existing customization function of storage.Control in the data object model storehouse, field is realized with form of scripts.Template in the existing customization function template base derives from the request of historical successful data processed query analysis; The information stores of template is in background data base, a record in each template correspondence database, this record comprise the configuration information (being query contents, the querying condition of this template correspondence) of template ID, template name, template correspondence, service call sequence four parts of template function correspondence.When the user opens the page of customization, but the form that represents of domain object model bank is the set of edit control, existing customization function template base represent the set of form for existing customization function template name.

The user compares self individual demand with the existing function in the template base, satisfy user's function of demand this time if exist, then from template base, select the specific template title, read the query contents, querying condition of the corresponding customization of this template in the template ID of template name correspondence and the template configuration information, display format as a result, but and the edit control and the attribute of generated query content correspondence, but the edit control of querying condition correspondence and attribute, the gauge outfit of display list as a result.The user rewrites the value of the querying condition attribute of customization by adjusting display format as a result, constructs the new query requests of identical function.

If there is no satisfy user's function of demand this time, then, customize a brand-new data query function, as shown in Figure 3, comprise the steps: by customizable inquiring client terminal customization data inquiry

A) custom-built query content.But on the page of customizable inquiring client terminal, from the control of domain data model storehouse, select each edit control, thereby pull each query contents data object of specifying this inquiry into query contents customization frame, Query Result is data from the part attribute of query contents data object, but choose the row of the attribute of each edit control as the result data tabulation of this data query, promptly indicating the Query Result data is which attribute of query contents data object.

B) custom-built query condition.But on customized web page, from the visual control in domain data model storehouse, select each edit control, thereby pull the condition data object of specifying this inquiry into querying condition customization frame, but property value is selected, filled in to the attribute of choosing these edit controls also for this attribute, promptly specify which kind of attribute that derives from which kind of data object as the parameter of querying condition, and determine the property value of this attribute.Specify the querying condition of this time selecting to be used for which query contents data object, point to query contents data object control to represent association from querying condition data object control with arrow.

C) customize display format as a result.Arrange A by user preference) in the sequencing of the control property chosen, fill customized web page result's data list gauge outfit, and the Sorted list of designated result tabulation, Sorted list is placed on first row.

D) be the data query function name of new customization.The user chooses and preserves this customization button, and in the template name text box title of the template of the function correspondence of this customization of input.

Step 3: the customization process finishes, and encapsulates submodule encapsulation customization result by the customization result of customizable inquiring client terminal.If this customization derives from template base, set the respective identification bit representation and derive from existing custom built forms, if not, then this is customized to a brand-new customization, sets to be designated accordingly to be expressed as new customization.The customization result is encapsulated as an xml file, as shown in Figure 4.

With request is root node, is made of some process and a resultForm.Process represents a query script, is made of a goal node (being query contents) and a parameter (being querying condition) node.The goal node is made of a data Object node model, and the model node comprises the title name node of a model and the attribute property node of a plurality of model.The property node comprises the title name of property and the value value of property (herein for empty).The parameter node is made up of a plurality of model nodes.Each model node comprises the title name node of a model and the attribute property node of a plurality of model, and the property node comprises the title name of property and the value value of property, and this value is not empty.ResultForm ecbatic form wherein comprises several row column node.Each column node comprises value (being the Data Source of this column data) value of row title (being data query the results list gauge outfit name) name and row.Encapsulated result as parameter, is sent data query http and asks to the data query processing server.

Step 4: the request queue management submodule of data query server receives the data query request that client sends, and joins in the request queue.

Step 5: the request analysis submodule takes out first request in the request queue, resolves this request back acquisition original state, dbjective state, constraint condition and display format as a result.Original state is made up of current pending query script set, Query Result and service calling sequence three parts.The set of pending query script derives from the parameter x ml file that this data query request carries, the process node content under the request node.Do not carry out as yet owing to generate the process of composite services, Query Result is empty, and the service call sequence is empty.Dbjective state is to be made up of current pending query script set, Query Result and service calling sequence three parts.Under dbjective state, all query scripts dispose, and pending query script set is for empty.Query Result is represented each query script all by successful execution, and the target data object of each query script all can successfully be inquired about acquisition, so Query Result is the set of the target data object formation of each query script.The service call sequence is treated to be filled after the Services Combination process is finished because generating the Services Combination process of service call sequence does not carry out as yet, is the memory headroom of one period free time at present.If request queue is not empty, judge that this data query is derive from function in the customization function template base a kind of, if, then directly according to the template name inquiry background data base in source, the service call sequence that needs when handling the data query function of this template correspondence is changeed step 8; Carry out Services Combination otherwise call the Services Combination engine, shown in step 6.

If finding formation is that sky is the request analysis failure, then change step 10.

Step 6: Services Combination engine submodule is according to original state and dbjective state, call service broker's submodule and obtain current available master data inquiry service information, handle the query script in the original state one by one, under the prerequisite that satisfies pilot process constraint condition, for each query script carries out Services Combination, generate the service call sequence.

Generate the service call sequence, as shown in Figure 5, may further comprise the steps:

Step1: the source state S that from query script, extracts this Services Combination process ₀, S ₀The target data object that comprises this query script, querying condition set, empty service call sequence.The target data object indicates the field data object type of the data that this query script need obtain; The querying condition set is the querying condition that the user selects and fills at customized web page, and is the condition that is associated with this query script target data object; The service call sequence is empty under the original state.Add S ₀To the upstate formation TmpS that is used for temporary storaging data.

Step2: judge whether TmpS is empty, do not had and then to have exported the Services Combination failure information for the state of handling that the Services Combination process finishes if empty explanation is current; If be not empty, then change step3.

Step3: from TmpS, take out be positioned at queue heads upstate as current state S, next upstate among the TmpS is placed on queue heads.

Step4: whether the querying condition of judging current state S is empty, then exports the service call sequence of current state S for sky, and the Services Combination process finishes; Be not the empty formation A that then querying condition of S is stored in interim storing queries condition.

Step5: if A is that sky then illustrates under the current state, all querying conditions all to be used and to have generated corresponding follow-up state respectively, change step2; Otherwise still have the querying condition that is not used to change step6.

Step6: take out the querying condition conduct that is positioned at queue heads from A and work as precondition, next querying condition among the A is placed on queue heads.Search can be used for when the master data inquiry service of precondition and searches its corresponding atomic operation, used if all master data inquiry services are all modulated, show have under this state can not be processed querying condition, state can not arrive dbjective state thus, then abandons current state and changes step2; Otherwise change step7.

Step7: the service call sequence that the atomic operation that finds is added into S, if according to a plurality of atomic operations that can search a master data inquiry service when precondition, having preferential atomic operation of selecting to have a plurality of condition entries between the atomic operation of identical input, import different atomic operations and all must call.These atomic operations are with the service call sequence of relation of equivalence adding current state, and each atomic operation is carried out separately, then execution result is got the output that common factor calls as this master data inquiry service.

Step8: at the current querying condition of current state, generate the follow-up state of current state, and follow-up state is added the upstate formation.

As shown in Figure 6, the generation of follow-up state comprises two kinds of situations: first kind is that field data object when the precondition correspondence is the destination object of this query script, then precondition is worked as in deletion from current state, show when precondition and use, can not be used by later master data inquiry service as the initial conditions of the atomic operation of master data inquiry service.The state of deletion behind precondition as follow-up state, added TmpS, and expression has generated a new upstate, and generation finishes; Second kind of field data object when the precondition correspondence is not the destination object of this query script, and this situation generates follow-up status method and is, calls the correlation inquiry atomic operation when the master data inquiry service of precondition correspondence, obtains the relating attribute set.The property value source of relating attribute is the output when the atomic operation of the master data inquiry service correspondence of precondition.Deletion is originated when precondition also adds each relating attribute and property value respectively from current state, expression can not directly be used for screening the target data object of this query script when precondition, but can generate other conditions by incidence relation when precondition, the condition of these generations is the target data objects that can be used for screening this query script.Newly-generated state is added TmpS as follow-up state, and expression has generated a new upstate.Handle next relating attribute all relating attributes in the relating attribute set and all generated follow-up state, after all follow-up states added TmpS, generation finished.

After follow-up state generates and finishes, continue to handle next condition, change step5.

The service call sequence that a plurality of query scripts generate can promptly be independently of one another between the query script by parallel processing, can carry out the service call sequence that two or more query scripts generate simultaneously.

If the Services Combination failure can't generate the service call sequence, then change step 10.

Step 7: by customizing corresponding function of memory module storage and service call sequence to template base, become a Template Information record, the template ID of this record is that background data base generates automatically; Template name is the customization template name among the xml as a result; Query contents is the customization query contents among the xml as a result in the configuration information of template correspondence, and querying condition is the customization querying condition among the xml as a result, and querying condition only comprises data object and attribute under the querying condition, does not comprise property value; The service call sequence of template correspondence is the service call sequence that above-mentioned steps six generates, and wherein each master data inquiry service atomic operation is input as sky.

Step 8: implementation sub-module generates intermediate result and net result according to the master data inquiry service in the sequence call master data inquiry service storehouse of service call flow process sequence.Input/output relation between the implementation sub-module coordination service, in reading the service call sequence, if the input of the atomic operation of some master data inquiry services is not the parameter that the user directly imports when customization, but the atomic operation of the master data inquiry service that the service call sequence had been performed, the intermediate result that the atomic operation of the master data inquiry service that then will carry out generates is as the input of this master data inquiry service.Otherwise the parameter of importing during then directly with customization is carried out atomic operation as the input of master data inquiry service atomic operation.Treat that whole service call sequence is finished, the output net result.If occur causing unusually carrying out failure, then change step 10.

Step 9: the result generates submodule and describes the final data of display format generation as a result query analysis result according to request institute, with the form of browser page to the client echo reply; Carrying out the result shows.

The realization prerequisite of a kind of customizable querying method based on Services Combination of the present invention is the abstract modeling of field data, and data in the field are classified, and makes up data object model storehouse, field.Basic query demand at every kind of field data object makes up the data query service then, is published to the service agent module of data query server as basic service.

The present invention is described in further detail as embodiment below in conjunction with the merchandise query of an accompanying drawing and an online shop system:

In the present embodiment, the request of user's initial query is arranged, the inquiry product is the HP brand, listing after 2007, and the current data of computer in stock, requires to show model, quotation, the configuration information of computer, by quotation rank order from low to high.Suppose in the present embodiment do not have the template of similar functions can supply directly to call in the template base.Treatment step is as follows:

Step 1: domain analysis, computer are that the computer data object has attribute and is: goods number, model, brand, manufacturer, Time To Market, quotation, configuration information; Stock is that the storage data object has attribute and is: goods number, tank farm stock, cost price, price, Administrator Info.Computer data object and storage data object incidence relation are: the goods number attribute of computer data object equals the goods number attribute of storage data object.Corresponding data query basic service is computerQservice and storageQService.ComputerQService provides the atomic operation computerOperByBrand according to computer brand and acquisition computer object instance, obtain the atomic operation computerOperByTTM of computer object instance according to the computer Time To Market, unite the atomic operation computerOperByBrandAndPrice that obtains the computer object instance according to computer brand and price, obtain the atomic operation computerOperByID of computer object instance, correlation inquiry atomic operation computerOperRela according to the goods number of computer; StorageQService provides the atomic operation storageOperByStock that obtains the stock object instance according to tank farm stock, correlation inquiry atomic operation storageOperRela.

Step 2: the user enters the customizable data inquiring client terminal page, this moment, the initialization of data query client obtained data object model storehouse, field, wherein comprise two field data object control computer and storage, realize with JavaScript in the present embodiment.The template base content is empty; Do not have the corresponding data query function with inquiry computer in the template base, the user need begin a new customizing functions process.

A) custom-built query content.The user pulls the computer control and customizes frame to query contents from customized web page, and chooses model, quotation, configuration information attribute as a result of;

B) custom-built query condition.The user pulls the computer control and customizes frame to querying condition from customized web page, choose brand generic, fills in property value and is " HP ", chooses the Time To Market attribute, fills in property value and is "＞2007 "; From customized web page, pull the inventory control and add querying condition customization frame to, choose the tank farm stock attribute, fill in property value and be "＞0 ".Set up incidence relation between querying condition and the query contents: computer:brand=HP with arrow; TTM=＞2007 and storage:stock＞0, the both is associated with query contents computer;

C) customize display format as a result.Video data tabulation gauge outfit is as follows as a result to this request customization:

Table 1 customization video data tabulation as a result gauge outfit

Show	Valency chromium	The computer model	The computer configuration
Show	Valency chromium	The computer model	The computer configuration	Value	Computer:price (Sorted list)	computer：model	computer：configure

Computer:model represents the computer model, and computer:price represents the computer price, and computer:configure represents the configuration information of computer, and this result is price one row ordering according to first Column Properties.

D) choose and preserve this customization button, and import the corresponding template name of this customization and be " can buy the computer product inquiry ".

No user customization function in the template base in the present embodiment, if template name is arranged is that " inquiry computer product " has the function of customization, then processing procedure is as follows: select this template, page query contents partly is presented as the computer data object, and the attribute of having chosen is model, quotation, configuration information.Page querying condition partly is presented as computer data object and storage data object, the attribute that the computer data object has been chosen is Time To Market, brand, property value is empty, and the attribute that the storage data object has been chosen is a tank farm stock, and property value is empty.The Query Result form is empty, is filled voluntarily by the user.The user fills in property value as the Time To Market attribute of the computer data object of querying condition to be "＞2007 ", the brand generic property value is " HP ", is "＞0 " for filling in property value as the tank farm stock attribute of the storage data object of querying condition; Filling in as a result form as above states shown in the table 1.

Step 3: the client terminal to customize result encapsulates submodule encapsulation customization result, as shown in Figure 7, represents the customization result with the xml form.With request is root node, is made of a process and a resultForm.Process is made of a goal node and a parameter node.The goal node is made of a data Object node model, and the name of model node is that computer represents that the data object of this encapsulation is a computer, and model has three attribute property nodes.The name of property node is respectively model, price, and configure represents model, price, the configuration information of computer respectively.The parameter node is made up of a plurality of model nodes.First model nodename name is computer, attribute property node, and property node name is brand, value value is HP.All the other model model therewith are similar.ResultForm ecbatic form wherein comprises several row column node.First column node comprise row title name be price and row value value be computer:price.All the other column column therewith are similar.This xml as parameter, is sent data query http and asks to the data query processing server.

Step 4: the request queue management submodule of data query processing server receives the data query request that client sends, and request is stored in the request queue.

Step 5: the request analysis module adopts first data query analysis request in the formation of DOM mode analysis request, in the original state, represent the query script set with PROCESS, target=(computer) represents that the target data of this query script is to liking computer, parameter=((computer:brand=HP; TTM=＞2007) (storage:stock＞0)) querying condition of representing this query script is that the brand of computer is HP, and Time To Market TTM is after 2007, and stock library of object storage is greater than zero, promptly in stock; RESULT represents Query Result, and PLAN represents the service call sequence.To aforementioned request analysis result be:

Table 2 request analysis result

Original state

{PROCESS(target＝(computer)parameter＝((computer：brand＝HP； TTM＝＞2007)(storage：stock＝＞0))) RESULT()

	PLAN() }
	PLAN() }	Dbjective state	{ RESULT(computer) PLAN(planForPROCESS) }
Constraint condition	Do not have	Dbjective state	{ RESULT(computer) PLAN(planForPROCESS) }

In the dbjective state, query script PROCESS has disposed and has been sky, Query Result RESULT is for handling the set of the destination object among the successful PROCESS, be computer, service call sequence PLAN is planForPROCESS, is meant the service call sequence that the PROCESS in the original state is generated.

This request queue is not empty, judges that then this time inquiry is not a kind of of function in the template base, then need generate the service call sequence by Services Combination engine submodule.If function is a kind of in the template base, then according to template name inquiry background data base, the query requests that is obtained this template correspondence by implementation sub-module is handled the service call sequence, and the parameter in the original state is as parameter value, coupling master data inquiry service atomic operation, as the input of atomic operation, change step 8.If request queue is empty, then change step 10.

Step 6: the Services Combination engine is that this data query request generates the service call sequence.This data query request comprises a PROCESS, and as shown in Figure 8, details are as follows to generate service call sequence process:

PROCESS: query contents is computer, and parameter is (computer:brand=HP; TTM=＞2007) and (storage:stock＞0), this query script original state: (target=(computer) parameter=((computer:brand=HP; TTM=＞2007) (storage:stock＞0)) plan=()), this query script dbjective state: (target=(computer) parameter=() plan=(*)), * represents pre-assigned free space.

Step1: the source state S that from query script, extracts this Services Combination process ₀, S ₀=(target=(computer) parameter=((computer:brand=HP; TTM=＞2007) (storage:stock＞0)) plan=()); Add S ₀To the upstate formation TmpS that is used for temporary storaging data, TmpS={S ₀.

Step2: judge that TmpS is not empty, changes step3.

Step3: from TmpS, take out the S that is positioned at queue heads ₀As current state S.

The querying condition of step4:S is parameter=((computer:brand=HP; TTM=＞2007) (storage:stock＞0)) be not empty, the formation A of this condition in interim storing queries condition, i.e. A={ (computer:brand=HP; TTM=＞2007), (storage:stock＞0) }.

Step5:A is not empty, changes step6.

Step6: take out the querying condition (computer:brand=HP that is positioned at queue heads from A; TTM=＞2007) as working as precondition, the master data inquiry service that search can be used for when precondition is computerQService, its corresponding atomic operation is computerOperByBrand and computerOperByTTM, atomic operation computerOperByBrandAndPrice has brand as an input parameter, but the another one input parameter is a price, when precondition does not comprise price, thus this atomic operation for when precondition unavailable.Change step7.

Step7: (computerQService:computerOperByBrand (HP)) (computerQService:computerOperByTTM (＞2007)) are added among the service call sequence plan of S, at this moment plan=(computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)).

Step8: generate new state S '=(target=(computer) parameter=((storage:stock＞0)) plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)))), when the field of precondition correspondence data object is computer, destination object also is computer, directly S ' is added available TmpS, at this moment TmpS={ (target=(computer) parameter=((storage:stock＞0)) plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)))) }; Change step5a.

Step5a:A={ (storage:stock＞0) } be not empty, change step6a.

Step6a: take out querying condition (storage:stock＞0) conduct that is positioned at queue heads from A and work as precondition, searching the master data inquiry service that can be used for when precondition is storageQService, its corresponding atomic operation is storageOperByStock, changes step7a.

Step7a: storageQService:storageOperByStock (＞0) is added among the service call sequence plan of S, at this moment plan=(storageQService:storageOperByStock (＞0)).

Step8a: generate new state S '=(target=(computer) parameter=((computer:brand=HP; TTM=＞2007)) plan=(storageQService:storageOperByStock (＞0))), when the field of precondition correspondence data object is that storage and target domain data object computer are inconsistent, call the correlation inquiry basic operation storageOperRela of storageQService, obtain storage:ID computer:ID of equal value as a result, interpolation relating attribute to the querying condition of S ' generates follow-up state (target=(computer) parameter=((computer:brand=HP; TTM=＞2007; ID=(storageQService:storageOperByStock (＞0)))) plan=(storageQService:storageOperByStock (＞0))), and add follow-up state to TmpS, this moment TmpS={ (target=(computer) parameter=((storage:stock＞0)) plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)))), (target=(computer) parameter=((computer:brand=HP; TTM=＞2007; ID=(storageQService:storageOperByStock (＞0)))) plan=(storageQService:storageOperByStock (＞0))) }; Change step5b.

Step5b:A is empty, changes step2c.

Step2c:TmpS is not empty, changes step3c.

Step3c: from TmpS, take out be positioned at queue heads state as current state S, S={ (target=(computer) parameter=((storage:stock＞0)) plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)))) }.

The querying condition of step4c: current state S is not empty, the querying condition of S is stored to A, then A={ (storage:stock＞0) }.

Step5c:A is not empty, changes step6c.

Step6c: take out querying condition (storage:stock＞0) conduct that is positioned at queue heads from A and work as precondition, searching the master data inquiry service that can be used for when precondition is storageQService, its corresponding atomic operation is storageOperByStock, changes step7c.

Step7c: storageQService:storageOperByStock (＞0) is added among the service call sequence plan of S, this moment plan=(computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)), storageQService:storageOperByStock (＞0).

Step8c: generate new state S '=(target=(computer) parameter=() plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)), (storageQService:storageOperByStock (＞0))), when the field of precondition correspondence data object is that storage and target domain data object computer are inconsistent, call the correlation inquiry basic operation storageOperRela of storageQService, obtain storage:ID computer:ID of equal value as a result, interpolation relating attribute to the querying condition of S ' generates follow-up state (target=(computer) parameter=((computer:ID=(storageQService:storageOperByStock (＞0)))) plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)), storageQService:storageOperByStock (＞0))), and add follow-up state to TmpS, this moment TmpS={ (target=(computer) parameter=((computer:brand=HP; TTM=＞2007; ID=(storageQService:storageOperByStock (＞0)))) plan=(storageQService:storageOperByStock (＞0))), (target=(computer) parameter=((computer:ID=(storageQService:storageOperByStock (＞0)))) plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)), storageQService:storageOperByStock (＞0))) }, change step5d.

Step5d:A is empty, changes step2e.

Step2e:TmpS is not empty, changes step3e.

Step3e: from TmpS, take out be positioned at queue heads state as current state S, S={ (target=(computer) parameter=((computer:brand=HP; TTM=＞2007; ID=(storageQService:storageOperByStock (＞0)))) plan=(storageQService:storageOperByStock (＞0))) }.

The querying condition of step4e: current state S is not empty, and the querying condition of S is stored to A, A={ (computer:brand=HP; TTM=＞2007; ID=(storageQService:storageOperByStock (＞0))) };

Step5e:A is not empty, changes step6e.

Step6e: take out the querying condition (computer:brand=HP that is positioned at queue heads from A; TTM=＞2007; ID=(storageQService:storageOperByStock (＞0)))) as working as precondition, the master data inquiry service that search can be used for when precondition is computerQService, its corresponding atomic operation is computerOperByBrand, computerOperByTTM and computerOperByID change step7e.

Step7e: (computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)) ∧ computerQService:computerOperByID (storageQService:storageOperByStock (＞0)) is added among the service call sequence plan of S; This moment plan=(storageQService:storageOperByStock (＞0)), (computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)) ∧ (computerQService:computerOperByID (storageQService:storageOperByStock (＞0))).

Step8e: generate new state S '=(target=(computer) parameter=() plan=(storageQService:storageOperByStock (＞0)), (computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)) ∧ (computerQService:computerOperByID (storageQService:storageOperByStock (＞0)))), when the field of precondition correspondence data object is computer, destination object also is computer, directly S ' is added available TmpS, this moment TmpS={ (target=(computer) parameter=((computer:ID=(storageQService:storageOperByStock (＞0)))) plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)), storageQService:storageOperByStock (＞0))), (target=(computer) parameter=() plan=((storageQService:storageOperByStock (＞0)), (computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)) ∧ computerQService:computerOperByID (storageQService:storageOperByStock (＞0))) }, change step5f.

Step5f:A is empty, changes step2g.

Step2g:TmpS is not empty, changes step3g.

Step3g: taking-up is positioned at the state of queue heads as current state S from TmpS, S={ (target=(computer) parameter=((computer:ID=(storageQService:storageOperByStock (＞0)))) plan=((computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)), storageQService:storageOperByStock (＞0))) }.

Step4g: the querying condition of judging current state S be a sky, and the querying condition of S is stored to the formation A of interim storing queries condition, A={ (computer:ID=(storageQService:storageOperByStock (＞0))) }.

Step5g:A is not idle running step6g.

Step6g: take out querying condition (computer:ID=(storageQService:storageOperByStock (＞0))) conduct that is positioned at queue heads from A and work as precondition, it is that computerQService should serve and called by current state S that search can be used for master data inquiry service when precondition, abandon current state S, change step2h.

Step2h:TmpS is not empty, changes step3h.

Step3h: taking-up is positioned at the state of queue heads as current state S from TmpS, S=(target=(computer) parameter=() plan=((storageQService:storageOperByStock (＞0)), (computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)) ∧ computerQService:computerOperByID (storageQService:storageOperByStock (＞0)).

Step4h: the current state querying condition is empty, output service call sequence: (storageQService:storageOperByStock (＞0)), (computerQService:computerOperByBrand (HP)) ∧ (computerQService:computerOperByTTM (＞2007)) ∧ (computerQService:computerOperByID (storageQService:storageOperByStock (＞0)))), the Services Combination process of this query script finishes.Because this query requests only comprises this query script, so the Services Combination process of this query requests finishes.

If the Services Combination failure then forwards step 10 to.

Step 7: the customization memory module store successfully the template of the service call sequence of generation and this data query request function correspondence to template base.In the template record of storage, template ID is that background data base generates automatically, template name is that the template name among the customization encapsulated result xml promptly " can be bought the computer product inquiry ", the corresponding configuration information of template for the query contents of this data query correspondence of from customization encapsulated result xml, parsing be computer, querying condition for ((computer:brand=' '; TTM=' ') (storage:stock=' ')), the expression querying condition is brand generic, the Time To Market attribute of computer object, the tank farm stock attribute of stock object.The service call sequence of template correspondence is the service call sequence that aforementioned Services Combination process generates, but do not comprise parameter value, i.e. (storageQService:storageOperByStock ()), (computerQService:computerOperByBrand ()) ∧ (computerQService:computerOperByTTM ()) ∧ (computerQService:computerOperByID (storageQService:storageOperByStock ()))), the storageOperByStock atomic operation of storageQService master data inquiry service is at first called in expression, and this operation expression is according to all examples of tank farm stock inquiry stock object.Call computerOperByBrand atomic operation (expression), computerOperByTTM atomic operation (expression is according to Time To Market inquiry computer commodity), the computerOperByID atomic operation (expression is according to goods number inquiry computer commodity) of computerQService master data inquiry service then respectively, and the output result of above three atomic operations is got the net result that common factor obtains this service call sequence according to brand query computer commodity.

Step 8: implementation sub-module calls basic service according to the service call sequence order that generates, according to the input of appointment in the sequence input as master data inquiry service atomic operation, the set of finally exporting computer data object example.The output that is input as preceding step execution storageQService:storageOperByStock (＞0) of this atomic operation of computerQService:computerOperByID () is the ID attribute of storage object as a result, when carrying out computerQService:computerOperByID () atomic operation, take out storageQService:storageOperByStock (＞0) the ID attribute of each storage example in the storage example collection as a result, constitute a list, as the input of computerQService:computerOperByID ().

Cause carrying out failure if occur service call failure, parameter type mistake etc. in the implementation, then change step 10.

Step 9: according to the form as a result of step 2 description, result data object instance with step 8 output is a Data Source, from the computer data object of Data Source, extract price, model, configuration data, generate this data query result, all line data that obtain are sorted according to the computer:price row, with the data list after the ordering is that Data Source generation server end is replied html page, and echo reply.

Step 10: the abnormality processing submodule returns failure information to client, indicates Fail Type and details.

Claims

1, a kind of customizable querying method based on Services Combination is characterized in that, is made up of following steps:

2, according to the described a kind of customizable querying method of claim 1, it is characterized in that based on Services Combination: in the described step 1 data are carried out abstract classification is according to OO thought, data are carried out feature extraction; The attribute that the field data object model that takes out is comprised is as the attribute of object model, but each field data object model is written as the edit control of customizable inquiring client terminal in the mode of client script, describes the data query demand of self to application system.

3, according to the described a kind of customizable querying method of claim 2 based on Services Combination, it is characterized in that: the data object model storehouse, field in the described step 1 comprises logical control, with computing and logical operation the incidence relation between the data object attribute of two or more fields is described, each logical control is write with script mode.

4, according to the described a kind of customizable querying method of claim 1 based on Services Combination, it is characterized in that: the master data inquiry service in the master data inquiry service storehouse in the described step 1 is corresponding one by one with the field data object model in data object model storehouse, field, the atomic operation of field data object inquiry is provided, only by one or several attribute of corresponding field data object model, acquisition has the set of the data object example of this attribute from background data base.

5, according to the described a kind of customizable querying method of claim 4 based on Services Combination, it is characterized in that: each master data inquiry service in the master data inquiry service storehouse in the described step 1 comprises the atomic operation of an inquiry relating attribute, obtain the associated data object of corresponding field data object and the atomic operation of attribute thereof, the community set of output associated data object and associated data object.

6, according to the described a kind of customizable querying method based on Services Combination of claim 1, it is characterized in that: the customization data inquiry in the described step 2 comprises the steps:

7, according to the described a kind of customizable querying method of claim 1, it is characterized in that based on Services Combination: the original state in the described step 5, form by query script set, Query Result and service calling sequence; The query script set comprises that this user asks the query script of the data object of needs inquiry, and Query Result and service calling sequence are empty.

8, according to the described a kind of customizable querying method of claim 1, it is characterized in that based on Services Combination: the dbjective state in the described step 5, form by query script set, Query Result and service calling sequence; The query script set is for empty, and Query Result is the target data object of each query script in the query script set, and the service call sequence is the memory headroom of one period free time.

9, according to the described a kind of customizable querying method based on Services Combination of claim 1, it is characterized in that: the Services Combination in the described step 6 comprises the steps:

Step5:, change step2 if interim formation is empty; Otherwise change step6;

10, according to the described a kind of customizable querying method of claim 9 based on Services Combination, it is characterized in that: when described step8 generates the follow-up state of current state, if when the field data object of precondition correspondence is the destination object of this query script, then precondition is worked as in deletion from current state, and the state that will delete behind precondition adds the upstate formation as follow-up state, and generation finishes; Otherwise, call correlation inquiry atomic operation when the master data inquiry service of precondition correspondence, each relating attribute and property value source is added in the set of acquisition relating attribute respectively, and deletion adds the upstate formation when precondition and as follow-up state from current state; Then handle next relating attribute and all follow-up states are added the upstate formation, all relating attributes have all generated follow-up state in the relating attribute set.

11, a kind of customizable searching platform based on Services Combination is characterized in that, comprises customizable inquiring client terminal and data query server; Customizable inquiring client terminal comprises data object model storehouse, field, is used for data in the field are carried out abstract classification, but deposits the edit control for the model construction of being set up in; The data query server comprises master data inquiry service storehouse, but the master data inquiry service of structure and storage edit control correspondence;

The customization result encapsulates submodule, is used for encapsulating the customization result; If this customization derives from template base, set the flag of template and represent to derive from existing custom built forms, be expressed as new customization otherwise set to be designated accordingly; Be sent to the request queue management submodule of data query server;

12, according to the described a kind of customizable searching platform based on Services Combination of claim 11, it is characterized in that: in the data object model storehouse, described field, it is according to OO thought that data are carried out abstract classification, and data are carried out feature extraction; The attribute that the field data object model that takes out is comprised is as the attribute of object model, but each field data object model is written as the edit control of customizable inquiring client terminal in the mode of client script, describes the data query demand of self to application system.

13, according to the described a kind of customizable searching platform of claim 12 based on Services Combination, it is characterized in that: data object model storehouse, described field comprises logical control, with computing and logical operation the incidence relation between the data object attribute of two or more fields is described, each logical control is write with script mode.

14, according to the described a kind of customizable searching platform of claim 11 based on Services Combination, it is characterized in that: the master data inquiry service in described master data inquiry service storehouse is corresponding one by one with the field data object model in data object model storehouse, field, the atomic operation of field data object inquiry is provided, only by one or several attribute of corresponding field data object model, acquisition has the set of the data object example of this attribute from background data base.

15, according to the described a kind of customizable searching platform of claim 14 based on Services Combination, it is characterized in that: each master data inquiry service in described master data inquiry service storehouse comprises the atomic operation of an inquiry relating attribute, obtain the associated data object of corresponding field data object and the atomic operation of attribute thereof, the community set of output associated data object and associated data object.

16, according to the described a kind of customizable searching platform of claim 11, it is characterized in that: the customization data inquiry that described customizable inquiring client terminal carries out based on Services Combination:

17, according to the described a kind of customizable searching platform of claim 11, it is characterized in that based on Services Combination: the original state that the described request analyzing sub-module obtains, form by query script set, Query Result and service calling sequence; The query script set comprises that this user asks the query script of the data object of needs inquiry, and Query Result and service calling sequence are empty.

18, according to the described a kind of customizable searching platform of claim 11, it is characterized in that based on Services Combination: the dbjective state that the described request analyzing sub-module obtains, form by query script set, Query Result and service calling sequence; The query script set is for empty, and Query Result is the target data object of each query script in the query script set, and the service call sequence is the memory headroom of one period free time.

19, according to the described a kind of customizable searching platform of claim 11 based on Services Combination, it is characterized in that: described Services Combination engine extracts the source state of this Services Combination process, comprises target data object, querying condition set and the empty service call sequence of query script; Interpolation source state is to the upstate formation that is used for temporary storaging data;

20, according to the described a kind of customizable searching platform of claim 19 based on Services Combination, it is characterized in that: the Services Combination process of described Services Combination engine generates the follow-up state of current state, if when the field data object of precondition correspondence is the destination object of this query script, then precondition is worked as in deletion from current state, and the state that will delete behind precondition adds the upstate formation as follow-up state, and generation finishes; Otherwise, call correlation inquiry atomic operation when the master data inquiry service of precondition correspondence, each relating attribute and property value source is added in the set of acquisition relating attribute respectively, and deletion adds the upstate formation when precondition and as follow-up state from current state; Then handle next relating attribute and all follow-up states are added the upstate formation, all relating attributes have all generated follow-up state in the relating attribute set.