CN100485687C - Method and device for set-up disconnection data programmed model and its application - Google Patents
Method and device for set-up disconnection data programmed model and its application Download PDFInfo
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Abstract
A method for setting up data programming model free of connections includes laminating service-data object, setting up data programming model for each layer separately according to laminated service-data object. The device used for realizing said method and a data access-service manner are also disclosed.
Description
Technical field
The present invention relates to data access technology, be specifically related to a kind of method, device and application thereof of setting up connectionless data programing model.
Background technology
At present, nearly all information handling system all is the data source at particular type.In information handling system, the access technique in specific type of data source is mainly contained: relational database access technique by JDBC (Java database programming standard) or the XML file access technology by Xpath (XML path language).
Along with the extension of business event, enterprise information system is in continuous expansion, or on original system the new function of exploitation, or original subsystem independent of each other integrated, realize that company information is shared.This means that enterprise information system faces the challenge of handling heterogeneous data source constantly.So-called heterogeneous data source is meant data organizational structure, the reading and writing data mode different pieces of information source that there were significant differences.No matter as relational database, XML document data bank is in data organizational structure, or all obviously different on the reading and writing data mode.Heterogeneous data source comprises: relational database, object database, XML (can expand modeling language) file, WebService (Web service) and external information system of data message etc. can be provided.
For this reason, define one group with the irrelevant data programing interface of data source type, realize that the lotus root of separating between information handling system and the data source (is promptly removed dependence between the two, reaches light replacing wherein during a side, the opposing party still can operate as normal), be the needs of enterprise information system development.SDO (Service DataObjects, Service Data Object) is standardized at present one group of application programming interface, this group interface standard provides standard, consistent data access mode to the data consumer, has shielded the data access difference between the heterogeneous data source.By these interface specifications, between the supplier of data and data consumer, realize easily separating lotus root; Information handling system will be come access data by standard SDO API (the standard program interface of Service Data Object), and data set provider also will externally provide data by standard SDO API.
In order to make the data consumer in using the process of data, can disconnect with data set provider and being connected,, need set up connectionless data programing model only beginning to read, getting in touch with data set provider during write data at last.Existing SDO modeling technique has only the EMF (Eclipse Modeling Framework, Eclipse modeling framework) of Eclipse (an open source code tissue) organization development.The modeling technique scheme of EMF mainly contains following critical process:
1. set up a category figure (also available XML comes representation class figure) with Rational Rose (a kind of software modeling instrument), and generate the .mdl file:
As shown in Figure 1, comprise three classes among this category figure: library (Library), author (Writer), books (Book).Wherein, each class comprises: class name, attribute (title), method.Line between all kinds of is represented the call relation between them: can be relation of inclusion, as between library and the author, between library and the books; Also can be incidence relation, between author and books.
2. mdl is imported among the EMF, EMF generates the SDO model automatically, and its form is as follows:
platform：/resource/EMFModel/model/library.ecore
library
Book
tilte：EString
pages：EInt
category：BookCategory
author：Writer
Library
name：EString
writes：Writer
books：Book
Writer
name：EString
books：Book
BookCategory
Mystery＝0
ScienceFiction＝1
Biography＝2
EMF does not carry out layering to the SDO model when modeling, but the model of different levels is blended together, not with different to opening as model separation, thereby increased exploitation, safeguard the difficulty of SDO data object, and the development amount is big.Owing to fail model to different levels and segment and be the model definition respective meta-data of each level, make that SDO model extension and maintainability are relatively poor, be difficult to be integrated into highly versatile, possess in the platform of the function of examining oneself.
Summary of the invention
One aspect of the present invention provides a kind of method and device of setting up connectionless data programing model, to reduce the business development workload, improves development efficiency.
The present invention provides a kind of data access service method and system on the other hand, to realize the lotus root that goes of operation system and physics table model, improves the extensibility of system.
For this reason, technical scheme provided by the invention is as follows:
A kind of method of setting up connectionless data programing model of the embodiment of the invention may further comprise the steps:
Service Data Object is divided into field object and data object, and according to field object definition of data object;
Set up the field object model, and generate the corresponding physical table model by described field object model;
Set up the corresponding relation between described data object and the described physics table;
Generate data object-physics table mapping model according to described corresponding relation.
A kind of device of setting up connectionless data programing model of the embodiment of the invention comprises:
The layering unit is used for Service Data Object is divided into field object and data object, and according to field object definition of data object;
The modelling unit is used for setting up respectively the data programing model of different layers, and described modelling unit comprises:
Field object modelling subelement is used to set up the field object model;
The physics table model generates subelement, is used for generating the corresponding physical table model according to described field object model;
Data object-physics table mapping model generates subelement, is used for according to the corresponding relation between described data object and the described physics table, generates data object-physics table mapping model.
A kind of data access service method of the embodiment of the invention comprises:
Set up one group of connectionless data programing model that comprises different levels, described data programing model comprises: field object model, data object model, physics table model, data object-physics table mapping model;
Described data programing mold portion is deployed to the service/operation layer of system;
When user accesses data, will give the user from the data exhibiting of heterogeneous data source by described data programing model.
A kind of data access service of embodiment of the invention system, comprise: service/operation layer subsystem that service is provided for the user, application integration straton system, company information straton system, described company information straton system comprises one or more heterogeneous data sources, in described service/operation layer subsystem, be deployed with the data programing model equipment, in described application integration straton system, be deployed with data intermediary sevices device, the connectionless data programing model that provides one group to comprise different levels is provided described data programing model equipment, the connectionless data programing model of described different levels comprises: the field object model, data object model, the physics table model, data object-physics table mapping model; When user accesses data, obtain data by described data intermediary sevices device from heterogeneous data source, and these data sets are dressed up the data object that meets described data programing model specification, described data programing model equipment calls the data object after the assembling, and described data object is represented to the user.
The technical scheme that is provided by the above embodiment of the invention as can be seen, the inventive method is by abstract, analysis to model, mark off the model of different levels,, structurized hierarchical model that be separated from each other, complete irrelevant have been defined with the realization technology, make the developer need not to learn concrete SDO realization technology and can set up the industry exploitation of being engaged in of going forward side by side of SDO data object, thereby reduced the business development workload, improved development efficiency.
In addition, the present invention is by separating domain model with the physics table model, and on domain model, set up the mode of one deck data object model, make the system designer can be on domain model design system, the business development personnel can be on domain model the definition of data object, thereby realized the lotus root that goes of operation system and physics table model, improved the extensibility of system.
Description of drawings
Fig. 1 is a category figure synoptic diagram of setting up with Rational Rose in the prior art;
Fig. 2 is the realization flow figure of a preferred embodiment of the present invention's method of setting up connectionless data programing model;
Fig. 3 is that the present invention sets up among the method embodiment of connectionless data programing model and concerns synoptic diagram between the data object and field object;
Fig. 4 is that the present invention sets up among the method embodiment of connectionless data programing model and concerns synoptic diagram between the different levels model;
Fig. 5 is the theory diagram that the present invention sets up device first embodiment of connectionless data programing model;
Fig. 6 is the theory diagram that the present invention sets up device second embodiment of connectionless data programing model;
Fig. 7 is the realization flow figure of a preferred embodiment of data access service method of the present invention;
Fig. 8 is J2EE layer architecture and SDO of the present invention present position synoptic diagram;
The theory diagram of a preferred embodiment of Fig. 9 data access system of the present invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
The present invention carries out the structuring layering to SDO, sets up the Service Data Object model of different levels respectively: the field object model, and data object model, the physics table model, data object-physics table mapping model, and the model of these different levels is separated from each other.Like this, when business development, just can generate data object by basic field object, thereby reduce the business development workload, improve development efficiency according to service needed.
Set up the flow process of a preferred embodiment of the method for connectionless data programing model with reference to the present invention shown in Figure 2, this embodiment may further comprise the steps:
Step 201: Service Data Object is carried out layering, specifically can be divided into field object and data object.And according to field object definition of data object.
When the definition of data object, can with all or part of merging of one or more field objects, form a data object according to the service application needs.
Such as, in the field object view shown in Figure 3, four field objects are arranged, be respectively field object 1, field object 2, field object 3 and field object 4.Wherein, field object 2 is relevant with other three field objects respectively.According to service needed, with field object 1 and field object 2 altogether as a data object.
Certainly, also can adopt other layered mode,, can reduce the development amount, improve development efficiency as long as can make full use of metadata.
Step 202: set up the field object model, and generate the corresponding physical table model by described field object model.
Determine professional required field object and mutual relationship thereof.In four field objects as shown in Figure 3, field object 2 is IncFlds objects 1, field object 3 and field object 4 respectively, and between field object 1, field object 3 and the field object 4 without any incidence relation.
Can set up with IDE (Integrated Development Environment) modeling tool and satisfy the field object model that concerns between the object.Such as, set up the field object model with Rational Rose or PowerDesigner (a kind of software modeling instrument).
Step 203: set up the corresponding relation between data object and the physics table.
Because the object model of Rose is mainly supported Java, VC and three kinds of programming languages of VB, therefore, can in SDO, introduce Naming-SQL (name SQL), set up corresponding relation between data object and the physics table by Naming-SQL.Described Naming-SQL is meant that the SQL statement that will originally be embedded in the program code extracts, and puts into the file that another deposits SQL statement specially, and sentence a unique identification in former SQL statement it is replaced.Like this, the data base administrator just can manage concentratedly all SQL statement that leave in the file, under the prerequisite that does not change the SQL statement Query Result, can revise table, search order or the querying condition inquired about in the SQL statement easily, to reach the target of best performance.
Certainly, also can utilize other programming language to set up corresponding relation between data object and the physics table.
Step 204: generate data object-physics table mapping model according to the corresponding relation between data object and the physics table.
For example, the relation between the different levels model of setting up in the embodiment of the invention is as shown in Figure 4:
The part of data object IncFlds object 1, field object 2, field object 3, physics table model 1 corresponding data object model 1, physics table model 2 corresponding data object models 2, physics table model 3 corresponding data object models 3.SQL sets up corresponding relation between data object and the physics table by name, generation data object-physics table mapping model.As seen from Figure 4, data object model, field object model, data object-physics table mapping model, physics table model are separated from each other.
As seen, the present invention sets up the method for connectionless data programing model by abstract, analysis to model, mark off the model of different levels, defined, structurized hierarchical model that be separated from each other, complete irrelevant, made the developer need not to learn concrete SDO realization technology and can set up the industry exploitation of being engaged in of going forward side by side of SDO data object with the realization technology.By structuring segmentation to domain model, data object model, physics table model, data object-physics table mapping model, and be each model definition corresponding metadata, realized the clear layering of whole SDO modeling technique and based on the interface definition of models treated.Owing to complete metadata is provided, thereby the model of each level can be integrated in different platforms, the framework with examining oneself.
Based on the thought to the Service Data Object layering, the present invention also provides a kind of device of setting up connectionless data programing model.
With reference to Fig. 5, Fig. 5 shows the theory diagram that the present invention sets up device first embodiment of connectionless data programing model:
In this embodiment, comprising: layering unit 51 and modelling unit 52.Wherein, layering unit 51 is used for Service Data Object is carried out layering, and Service Data Object is divided into field object and data object, and according to field object definition of data object; Modelling unit 52 is used for according to the Service Data Object after the layering, sets up the data programing model of each layer respectively.
Field object modelling subelement 521 is used for setting up the field object model according to field object and logical relation thereof that the layering unit is determined, can set up with IDE (Integrated Development Environment) modeling tool and satisfy the field object model that concerns between the object.Such as, set up the field object model with Rational Rose or PowerDesigner (a kind of software modeling instrument).The physics table model generates subelement 522 and is used for generating the corresponding physical table model according to the field object model, and being about to the field object model conversion is the physics table model.Data object-physics table mapping model generates subelement 523 and is used for according to the corresponding relation between data object and the physics table, generates data object-physics table mapping model.
With reference to Fig. 6, Fig. 6 shows the theory diagram that the present invention sets up device second embodiment of connectionless data programing model:
With embodiment illustrated in fig. 5 different be, in this embodiment, in the modelling unit, increased corresponding relation and set up subelement 524, be used for setting up required data object of generation data object-physics table mapping model and the corresponding relation between the physics table by name SQL.In SDO, introduce Naming-SQL (name SQL), set up corresponding relation between data object and the physics table by Naming-SQL.
The process of setting up the corresponding relation between data object and the physics table by Naming-SQL comprises:
1. write a query SQL statement (give unique identification of this statement, be called " name SQL "): it finds the corresponding field of attribute of all and data object from database table;
2. the attribute of specified data object and " query SQL " are inquired about the one-to-one relationship between the field, but not the direct corresponding relation of data object attribute and physics literary name section.
That is to say,, set up the indirect corresponding relation of data object and physics table by the attribute of configuration data object and the one-to-one relationship between the name field that SQL inquired about.
Like this, data object-physics table mapping model generates subelement 523 just can be directly according to this corresponding relation generation data object-physics table mapping model, and need not the corresponding relation between specified data object and the physics table alone again.Certainly, also can provide multiple support different language corresponding relation to set up subelement, when system development, select to use according to applied environment.
The present invention sets up the method and the device of connectionless data programing model, can be applied in J2EE (Java2 enterprise version) framework, make system designer's design system on domain model, make business development personnel definition of data object on domain model, realize the lotus root that goes of operation system and physics table model, improve the extensibility of system.
The flow process of a preferred embodiment of reference data access service method of the present invention shown in Figure 7 may further comprise the steps:
Step 701: set up one group of data programing model that comprises different levels.
The data programing model of different levels comprises: the field object model, and data object model, the physics table model is according to object-physics table mapping model.The process of setting up of the data programing model of these different levels has a detailed description in front, does not repeat them here.
Step 702: the service/operation layer that the data programing mold portion is deployed to system.
Step 703: when user accesses data, will give the user from the data exhibiting of heterogeneous data source by the data programing model.
Step 704: after the user's modification data, by the Data Update of data programing model after with user's modification in heterogeneous data source.
Reference J2EE layer architecture shown in Figure 8 and SDO present position synoptic diagram:
Wherein, 81 is the company information layer, is used to provide various information source, such as, DB (relational database), LEGACY (history file), ERP (Enterprise Resources Plan table), the Message different information sources of form such as (message); 82 is the application sets stratification, provides unified going out/enter the mouth by DMS (Data Mediator Service, data intermediary sevices) for the data of different aforementioned sources; 83 for service/operation layer, is used for data are carried out business processing, such as employing EJB (Enterprise JavaBean, a model that provides for development server side enterprise application assembly), technology such as Bean, Service; 85 is the service end presentation layer, being used for the data placement after handling is specific format, such as passing through JSP (JavaServer Pages, a kind of dynamic web page technique), Servlet (java server small routine), UI Management technology such as (user interface managements); 86 is the client shows layer, be used for the data of specific format are showed the client by the page or other visualization window, such as, offer the client by Browser (web browser), PDA (palm PC), Webservice (page server) etc.
By this figure as seen, the realization of technical solution of the present invention belongs to DMS (Data Mediator Service, the data intermediary sevices) level, DMS receive from heterogeneous data source (such as, relational database DB, the XML file, message Message etc.) data, such as, by JDBC (Java database programming standard), JCA (J2EE connector architecture), JAR-RPC (Java API for XML-based RPC, be used for the JAVA DLL (dynamic link library) of access) based on the WebServices of XML far call, these agreements of JMS (Java messenger service) are obtained corresponding data respectively from different data sources, then these data are dressed up the data object that meets the data programing model specification, and give data programing model in the service/operation layer of system it; Described data programing model calls the data object after the assembling, and data object is represented to the user.Such as, can the attribute of data object and the hierarchical relationship between these attributes be shown by the list on the Webpage.
With reference to Fig. 9, Fig. 9 is the theory diagram of a preferred embodiment of data access service of the present invention system:
In this embodiment, comprising: service/operation layer subsystem 91, application integration straton system 92 and company information straton system 93.Wherein, service/operation layer subsystem 91 is used to the user that service is provided; Application integration straton system 92 is used to the data of different aforementioned sources that unified going out/enter the mouth is provided; Company information straton system 93 is used to system that information data is provided, and comprises one or more heterogeneous data sources, such as, relational database DB, XML file, message Message etc.
In service/operation layer subsystem 91, be deployed with data programing model equipment 901, in application integration straton system 92, be deployed with data intermediary sevices device 902.Wherein, the connectionless data programing model that provides one group to comprise different levels is provided data programing model equipment 901, carries out modeling promptly for the required business datum of operation layer, comprises the institutional framework and the source of business datum.When user accesses data, the data of obtaining from heterogeneous data source by data intermediary sevices device 902, and these data sets are dressed up the data object that meets the data programing model specification, data programing model equipment 901 calls the data object after the assembling, and data object is represented to the user.After the user's modification data, data programing model equipment 901 with the Data Update after the user's modification in described heterogeneous data source.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (11)
1, a kind of method of setting up connectionless data programing model is characterized in that, may further comprise the steps:
Service Data Object is divided into field object and data object, and according to field object definition of data object;
Set up the field object model, and generate the corresponding physical table model by described field object model;
Set up the corresponding relation between described data object and the described physics table;
Generate data object-physics table mapping model according to described corresponding relation.
2, method according to claim 1 is characterized in that, comprises according to the step of the field object definition of data object in the field object model: with all or part of merging of one or more field objects, form a data object.
3, method according to claim 1 is characterized in that, the described field object model of setting up comprises:
Determine professional required field object and mutual relationship thereof;
Utilize Integrated Development Environment IDE modeling tool to set up the field object model that satisfies described relation.
4, method according to claim 1 is characterized in that, the described corresponding relation of setting up between described data object and the described physics table comprises:
SQL sets up corresponding relation between described data object and the described physics table by name.
5, a kind of device of setting up connectionless data programing model is characterized in that, comprising:
The layering unit is used for Service Data Object is divided into field object and data object, and according to field object definition of data object;
The modelling unit is used for setting up respectively the data programing model of different layers,
Described modelling unit comprises:
Field object modelling subelement is used to set up the field object model;
The physics table model generates subelement, is used for generating the corresponding physical table model according to described field object model;
Data object-physics table mapping model generates subelement, is used for according to the corresponding relation between described data object and the described physics table, generates data object-physics table mapping model.
6, device according to claim 5 is characterized in that, described modelling unit also comprises:
Corresponding relation is set up subelement, is used for setting up required described data object of generation described data object-physics table mapping model and the corresponding relation between the described physics table by name SQL.
7, a kind of data access service method is characterized in that, described method comprises:
Set up one group of connectionless data programing model that comprises different levels, described data programing model comprises: field object model, data object model, physics table model, data object-physics table mapping model;
Described data programing mold portion is deployed to the service/operation layer of system;
When user accesses data, will give the user from the data exhibiting of heterogeneous data source by described data programing model.
8, method according to claim 7 is characterized in that, describedly will comprise for user's step from the data exhibiting of heterogeneous data source by described model:
Obtain data by the application sets stratification of described system, and these data sets are dressed up the data object that meets described model specification from heterogeneous data source;
Described service/operation layer calls data object after the assembling by described model, and described data object is represented to the user.
9, according to claim 7 or 8 described methods, it is characterized in that described method also comprises:
After the user's modification data, by the Data Update of described model after with described user's modification in described heterogeneous data source.
10, a kind of data access service system comprises: for the user provides the service/operation layer subsystem of service, and application integration straton system, company information straton system, described company information straton system comprises one or more heterogeneous data sources, it is characterized in that,
In described service/operation layer subsystem, be deployed with the data programing model equipment, in described application integration straton system, be deployed with data intermediary sevices device, the connectionless data programing model that provides one group to comprise different levels is provided described data programing model equipment, the connectionless data programing model of described different levels comprises: the field object model, data object model, the physics table model, data object-physics table mapping model; When user accesses data, obtain data by described data intermediary sevices device from heterogeneous data source, and these data sets are dressed up the data object that meets described data programing model specification, described data programing model equipment calls the data object after the assembling, and described data object is represented to the user.
11, system according to claim 10 is characterized in that,
After the user's modification data, the Data Update of described data programing model equipment after with described user's modification is in described heterogeneous data source.
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| CN103617175A (en) * | 2013-11-04 | 2014-03-05 | 广东电子工业研究院有限公司 | Method for virtualization of large-scale distributed heterogeneous data |
| CN104636333A (en) * | 2013-11-06 | 2015-05-20 | 宁夏新航信息科技有限公司 | Domain-driven development plug-in system |
| CN108763530A (en) * | 2018-05-31 | 2018-11-06 | 中国农业银行股份有限公司 | A kind of data access method, device and electronic equipment |
| CN111209319B (en) * | 2018-11-21 | 2022-03-29 | 华为云计算技术有限公司 | Data service method and device |
| CN110020834A (en) * | 2019-04-15 | 2019-07-16 | 浩鲸云计算科技股份有限公司 | A kind of on-line intelligence big data development approach of modeling and debugging fusion |
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Effective date of registration: 20201127 Address after: Building 2, No. 3, Fuqian Road, Hailing District, Taizhou City, Jiangsu Province Patentee after: Taizhou Haitong Asset Management Co.,Ltd. Address before: Unit 2414-2416, main building, no.371, Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20201127 Address after: Unit 2414-2416, main building, no.371, Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |