CN109634590A - A kind of Object Query method based on business model - Google Patents
A kind of Object Query method based on business model Download PDFInfo
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Abstract
The invention belongs to technical field of computer software development, especially develop Web application field using Java technology, and in particular to a kind of Object Query method based on business model.A kind of Object Query method based on business model, comprising: (1): business model;(2): dynamic generation query interface;(3): generating query statement and execute inquiry.A kind of Object Query method based on business model disclosed by the invention has the advantages that 1, is more flexible --- after guaranteeing model variation, do not need hard coded just complete Object Query function with needing to change, enhance flexibility;2, applied widely.
Description
Technical field
The invention belongs to technical field of computer software development, especially develop Web application field, tool using Java technology
Body is related to a kind of Object Query method based on business model.
Background technique
Business model refers to the information-based side indicated a kind of to entity object involved in business procedure in information system
Method.Mainly establish entity object, object properties, the information of the relationship between object.Mould refers to model in business model,
Model refers to entity object involved in the business procedure indicated in information system, for example, in manufacturing enterprise's business procedure
The component being related to, drawing and document, Engineering Change Order etc..
Currently, generally using model-controller-view in the operation system of the Web mode based on Java technology exploitation
(MVC) architecture mode, model layer mostly use Hibernate technology to realize, define business model, XML using common Java object
Mapped file defines the mapping of object to relational database, and mapped file is generated database schema by tool.This side
Formula is modeled using hard coded mode.Under the conditions of such, the query function of object is also hard coded, the exploitation of query interface
The field information that model defines must be relied on, if model information is related to field modification, it is necessary to carry out relevant model and inquiry
GUI code modification, it is difficult to meet the dynamic expansion requirement of operation system.
Traditional Object Query method is, according to the field information hard coded query page of model, after input inquiry condition,
Data base querying is carried out according to fixed inquiry field and keyword.This mode flexibility is poor, if variation, including
The additions and deletions of field change, and require adjustment query page and background query logic, adaptability are poor.
Summary of the invention
Goal of the invention: the present invention is directed to propose a kind of flexible expansible Object Query method, solves the above-mentioned prior art
Existing deficiency.For this purpose, the present invention provides a kind of Object Query method based on business model.
Object Query method in the present invention is established on the basis of business object modeling, and business object modeling provides
The dynamic of model and attribute modifies ability, to increase the flexibility of model, the Object Query page is according to mould on this basis
Type information dynamic generation, different attributes generate different querying condition input modes, typing inquiry according to data type difference
After condition is submitted, background business logic processing module is looked into according to model information and key word of the inquiry construction HQL or primary SQL
Inquiry condition realizes query function by Hibernate frame.After the method can guarantee model variation, hard coded is not needed just
Complete Object Query function with needing to change, enhance flexibility.
A kind of technical solution: Object Query method based on business model, comprising:
(1): business model
The attribute information of Definition Model and model, and the attribute information of model and model is converted into Hibernate mapping
File enters step (2) after the completion;
(2): dynamic generation query interface
The showing interface control of allocation models attribute, dynamic generation query page enter step (3) after the completion;
(3): generating query statement and execute inquiry
According to the querying condition of user's typing, binding model information generates query statement, executes inquiry.
Further, the model in step (1) includes general models and built-up pattern, in which:
General models correspond to the object of operation system;
Built-up pattern indicates the set of the attribute of specific transactions meaning.
Further, general models can quote one or more built-up pattern, and general models can quote other general
Logical model, to express the adduction relationship between object, model interaction attribute is presented as three kinds of modes: the category that model is directly quoted
Property, model by the reference attribute of built-up pattern indirect referencing, reference other general models as relating attribute.
Further, be converted to Hibernate mapped file in step (1) the following steps are included:
(11) universal model class CommonObject is defined, universal model was completed in the development phase, it is cured in system,
This universal model is the parent of all business models;
(12) data structure of a Map is defined in universal model class CommonObject as property container, is used to
The attribute of storage model, for supporting the extended attribute of attribute;
(13) a model class ObjectReference is defined to be used to indicate reference object;
(14) conversion of the attribute information of formulation transformation rule implementation model and model to Hibernate mapped file.
Further, in step (2), in the showing interface control of allocation models attribute, the content of configuration includes three
Part: control type, initialization source and input limitation.
Further, in step (2), when query interface generates, use defined html interface template, html interface
The integral layout at defined good interface in template, binding model attribute information generate querying condition, are filled into the certain bits of template
It sets, in which:
Querying condition includes field, operator, input parameter three parts.
Further, it is and (and) relationship or or (or) relationship between querying condition.
Further, it in step (3), generates query statement and executes inquiry and include:
(31) when the list of querying condition is submitted to processing logic, in conjunction with field, operator and input parameter establish inquiry
Condition, in which:
The querying condition of many condition be and relationship or or relationship;
(32) HQL sentence or original SQL statement are constructed, the query interface execution provided using Hibernate frame is looked into
It askes.
The utility model has the advantages that a kind of Object Query method based on business model disclosed by the invention has the advantages that
1, more flexible --- after guaranteeing model variation, do not need hard coded just complete Object Query function with needing to become
Change, enhances flexibility;
2, applied widely.
Detailed description of the invention
Fig. 1 shows a kind of flow charts of Object Query method based on business model of the embodiment of the present invention.
Specific embodiment:
Detailed description of specific embodiments of the present invention below.
In order to make it easy to understand, once explaining the noun of several this fields below:
Attribute: the characteristic information of entity object in information system describes which feature entity object has, using entity
Field in object is illustrated.For example, needing to use number, title when description partial model, the fields such as production firm are carried out
Explanation;
Hibernate: i.e. Object Relation Mapping frame is the Object Relation Mapping frame an of open source code, it
The object encapsulation of very lightweight is carried out to JDBC, Java object and database table are established mapping relations by it, are one complete
Automatic ORM frame, Hibernate can automatically generate SQL statement, automatic to execute, so that java applet person is compiled using object
Cheng Siwei manipulates database;
A kind of Object Query Language that HQL:Hibernate frame is supported, the contracting of Hibernate Query Language
It writes, Object oriented encapsulation has been carried out to querying condition, more abundant flexible, more powerful query capability is provided, HQL is closer
SQL statement query grammar;
SQL: structured query language (Structured Query Language) is a kind of data base querying and program
Design language, for accessing data and querying, updating, and managing relational database system.
Based on the present invention utilizes business model function, a kind of flexible Object Query method, tool are realized
Body scheme is as follows:
A kind of Object Query method based on business model, comprising the following three steps:
(1) business model:
The attribute information of Definition Model and model, and it is converted into Hibernate mapped file;
(2) dynamic generation query interface
The showing interface control of allocation models attribute, dynamic generation query page;
(3) it generates query statement and executes inquiry:
According to the querying condition of user's typing, binding model information generates query statement, executes inquiry.
Further, step (1) business model includes following part:
1) model and attribute definition:
Model includes general models and built-up pattern, and general models correspond to the object of operation system, and built-up pattern indicates special
Determine the set of the attribute of business meaning.General models can quote one or more built-up pattern.General models can quote
Other general models, to express the adduction relationship between object.Model includes mark, and title, database table name, description etc. must
It must information.
Attribute includes title, mark, the column name of database table, data type (including character type, integer, full mold, boolean
Type, date type, enumeration type), data length, the information such as description.
Model interaction attribute is presented as three kinds of modes: the attribute that model is directly quoted, and model passes through between reference built-up pattern
The attribute of reference is connect, other general models of reference are as relating attribute.
The example of one concrete model is as follows:
Model identification: Part, model name: component, database table: PLM_PART_PART
Attribute list:
1) unique identification innerId character type length: 127
2) model identification classId character type length: 127
3) title name character type length: 255
4) number number character type length: 255
5) default units defaultUnit character type length: 255
6) default units title defaultUnitName character type length: 255
7) tracking mode traceType character type length: 63
8) whether main finished product mainEndItem Boolean type
9) quantity amount integer length: 5
10) weight weight full mold length: 5,2
11) updateTime renewal time, type date
12) version (built-up pattern) IterationInfo
13) founder (reference model) createBy
Model identification: IterationInfo, model name: version information
Attribute list:
1) major release versionNo character type length: 255
2) minor release/point release iterationNo character type length: 255
Other summaries
Model identification: User, model name: personal information, database table: PLM_USER
Attribute list:
1) unique identification innerId character type length: 127
2) model identification classId character type length: 127
Other summaries
Further, model and its attribute information are converted to Hibernate mapped file in step (1), comprising the following steps:
(11) universal model class CommonObject is defined first, universal model was completed in the development phase, is cured to and is
In system, this model is the parent of all business models;
(12) data structure of a Map is defined in universal model class CommonObject as property container, for depositing
The attribute of model is stored up, for supporting the extended attribute of attribute, utilizes dynamic-component in Hibernate mapped file
Label is supported property container;
(13) it defines model class ObjectReference to be used to indicate reference object, this reference object only records pair
The model identification and object major key of elephant identify, for indicating that model refers to the case where other models are as oneself attribute;
(14) reference object is supported using component label in Hibernate mapped file.
Transformation rules: entity-name element is corresponded to after model identification conversion;The class name of model corresponds to Universal Die
Class name, that is, CommonObject of type, the table name of model correspond to table attribute.
The transformation rule for the attribute that model is directly quoted: the corresponding data type of major key unique identification is character string;Commonly
Attribute is converted to property element;Attribute-bit corresponds to name attribute, and data type corresponds to type attribute, and data length is corresponding
Length attribute;Database column name corresponds to column attribute;The conversion corresponding relationship of data type is following, and (type belongs to after converting
The value of property):
Character type corresponds to type=" string ";
Integer corresponds to type=" int ";
Full mold corresponds to type=" double ";
Boolean type corresponds to type=" boolean ";
Date type corresponds to type=" timestamp ";
Enumeration type corresponds to the org.hibernate.type.EnumType of Hibernate.
The transformation rule that model passes through the attribute of reference built-up pattern indirect referencing: reference attribute and component element
Corresponding, the format after conversion is similar as follows;The value of element name attribute is that reference attribute-bit adds Ref suffix, and class is to fix
Value ObjectReference;Component element lower includes two fixed property daughter elements, respectively corresponds pair
As major key identifies innerId and model identification classId.
It quotes the transformation rule of built-up pattern: finding the attribute of its reference, transformation rule by the definition of built-up pattern
The attribute directly quoted with model.
One model for being specifically converted into Hibernate mapped file is as follows:
Database table is generated and updated using the DDL tool that Hibernate frame carries.
Further, step (2) dynamic generation query interface includes following part:
1) model attributes showing interface control configures
The content of configuration includes three parts:
Control type: including text box, combobox, check box, the control that the HTML such as textview field are supported.It should be combined when configuration
Data type is determined by user.
Initialization value source: other database tables, XML file, customized data dictionary etc. can be derived from.
Input limitation: including input format, numberical range, the constraint such as spcial character.
2) dynamic generation query interface
When interface generates, use defined html interface template, the integral layout at defined good interface, knot in template
Molding type attribute information generates querying condition, is filled into the specific position of template, and querying condition includes field, operator, input
Parameter three parts, the corresponding value of various types field are as follows:
(1) (operator is comprising not including, being equal to, be not equal to character string type, if case sensitive, input parameter are come
It is inputted from user);
(2) containing integer and full mold, (operator is greater than being less than, be equal to, be not more than, be not less than, be not equal to, be situated between to numeric type
Between two values, input parameter is inputted from user);
(3) Boolean type (operator is be fixed as to be selected by user equal to, input value).
(4) date type (operator is between two time values, and the beginning and ending time allows for sky);
(5) enumeration type (operator be equal to, be not equal to, including, do not include, input come from enumerated value range, selected by user
It selects).
(6) reference type (operator be equal to, be not equal to, input parameter from the model being cited, selected by user);
Conditional relationship between field:
With: indicate that the condition and other debugging are "AND" relationships;
Or: indicate that the condition and other debugging are "or" relationships.
When inquiry, it can not need to inquire all fields, default can be provided according to the demand of application
Field is inquired, and field is increased according to model attributes information dynamic, the mode that the field after increase generates interface is same as above.
Further, step (3) generate query statement execute inquiry the following steps are included:
(31) when the list of querying condition is submitted to processing logic, in conjunction with field, operator and input parameter establish inquiry
Condition, many condition "AND" or "or" connection;
(32) HQL sentence or original SQL statement are constructed, the query interface execution provided using Hibernate frame is looked into
It askes.
When constructing HQL or SQL statement, the target object of inquiry derives from model identification information, the object of querying condition
Field is identified from model attributes, and operator corresponding relationship is as shown in table 1:
Table 1: interface operation meets the correspondence table of HQL operator
Interface operation symbol | Corresponding HQL operator |
It is equal to | = |
It is not equal to | !=or<> |
Include | like |
Do not include | not like |
It is not more than | ≤ |
It is not less than | >= |
Including | in |
Do not include | not in |
Between two values | between |
Particularly, for quoting other models the case where, the construction method of querying condition are as follows: the reference pair that user chooses
As when, be passed to object unique mark;According to the transformation rule of reference model, field value is limited are as follows: and attribute-bit+
Ref.innerId。
The Object Query function of realizing according to the method is updated model when business model changes, then
Query interface is able to achieve dynamic and updates, and query function is more flexible, and adaptability enhancing quickly meets business demand.
Embodiments of the present invention are elaborated above.But present invention is not limited to the embodiments described above,
Technical field those of ordinary skill within the scope of knowledge, can also do without departing from the purpose of the present invention
Various change out.
Claims (8)
1. a kind of Object Query method based on business model characterized by comprising
(1): business model
The attribute information of Definition Model and model, and the attribute information of model and model is converted into Hibernate mapped file,
(2) are entered step after the completion;
(2): dynamic generation query interface
The showing interface control of allocation models attribute, dynamic generation query page enter step (3) after the completion;
(3): generating query statement and execute inquiry
According to the querying condition of user's typing, binding model information generates query statement, executes inquiry.
2. a kind of Object Query method based on business model as described in claim 1, which is characterized in that in step (1)
Model includes general models and built-up pattern, in which:
General models correspond to the object of operation system;
Built-up pattern indicates the set of the attribute of specific transactions meaning.
3. a kind of Object Query method based on business model as claimed in claim 2, which is characterized in that general models can draw
With one or more built-up pattern, general models can quote other general models, to express the adduction relationship between object,
Model interaction attribute is presented as three kinds of modes: attribute that model is directly quoted, model pass through reference built-up pattern indirect referencing
Attribute, reference other general models as relating attribute.
4. a kind of Object Query method based on business model as described in claim 1, which is characterized in that step (1) transfer
Be changed to Hibernate mapped file the following steps are included:
(11) universal model class CommonObject is defined, universal model was completed in the development phase, was cured in system, this is logical
It is the parent of all business models with model;
(12) data structure of a Map is defined in universal model class CommonObject as property container, for storing
The attribute of model, for supporting the extended attribute of attribute;
(13) a model class ObjectReference is defined to be used to indicate reference object;
(14) conversion of the attribute information of formulation transformation rule implementation model and model to Hibernate mapped file.
5. a kind of Object Query method based on business model as described in claim 1, which is characterized in that in step (2),
When the showing interface control of allocation models attribute, the content of configuration includes three parts: control type, initialization source and input
Limitation.
6. a kind of Object Query method based on business model as described in claim 1, which is characterized in that in step (2), look into
When asking interface and generating, use defined html interface template, the integral layout at defined good interface in html interface template,
Binding model attribute information generates querying condition, is filled into the specific position of template, in which:
Querying condition includes field, operator, input parameter three parts.
7. a kind of Object Query method based on business model as claimed in claim 6, which is characterized in that between querying condition
For with relationship or or relationship.
8. a kind of Object Query method based on business model as described in claim 1, which is characterized in that raw in step (3)
At query statement and executes inquiry and include:
(31) when the list of querying condition is submitted to processing logic, in conjunction with field, operator and input parameter establish querying condition,
Wherein:
The querying condition of many condition be and relationship or or relationship;
(32) HQL sentence or original SQL statement are constructed, executes inquiry using the query interface that Hibernate frame provides.
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Cited By (7)
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CN110543303A (en) * | 2019-07-22 | 2019-12-06 | 石化盈科信息技术有限责任公司 | Visual business platform |
CN111563283A (en) * | 2020-04-26 | 2020-08-21 | 上海烜翊科技有限公司 | Method for quickly referencing data in system modeling |
CN111966349A (en) * | 2020-07-09 | 2020-11-20 | 杭州传化智能制造科技有限公司 | Method, device and computer equipment for developing programs based on BS (browser/server) architecture |
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CN110543303A (en) * | 2019-07-22 | 2019-12-06 | 石化盈科信息技术有限责任公司 | Visual business platform |
CN110543303B (en) * | 2019-07-22 | 2023-05-30 | 石化盈科信息技术有限责任公司 | Visual service platform |
CN111563283A (en) * | 2020-04-26 | 2020-08-21 | 上海烜翊科技有限公司 | Method for quickly referencing data in system modeling |
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CN112035197A (en) * | 2020-08-11 | 2020-12-04 | 深圳前海微众银行股份有限公司 | Configuration method and device of front-end page |
CN112732243A (en) * | 2021-01-11 | 2021-04-30 | 京东数字科技控股股份有限公司 | Data processing method and device for generating functional component |
CN113656433A (en) * | 2021-08-16 | 2021-11-16 | 北京京东振世信息技术有限公司 | Entity object extension method and device, electronic equipment and storage medium |
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