CN102360291B - Service-oriented business rule design method based on business rule engine - Google Patents
Service-oriented business rule design method based on business rule engine Download PDFInfo
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Abstract
The invention discloses a service-oriented business rule design method based on a business rule engine, belonging to the technical field of computer graph editors and solving the problem of poor universality of the existing service rules. The method comprises the following steps of: establishing a graph editor; defining a uniform service rule modeling language graphic primitive database in a tool bar of the graph editor; selecting the graphic primitives from the graphic primitive database to an editing area in the graph editor, editing the graphic primitive attribute via an attribute view area, and mutually nesting the graphic primitives to realize the graphical description of the business rule; connecting rule label graphic primitives according to a priority order; and generating uniform service rule modeling language codes with the objects established in the editor, and converting the codes into rule language codes. In the method, the uniform service rule modeling language is used as an intermediate language, differences of different business rule engines on the aspect of rule languages are shielded, and constraints of a certain special business rule engine is broken through.
Description
Technical field
The invention belongs to computer graphical editing machine technical field, particularly a kind of method of business rule graphically being described and is converted into rule language.
Background technology
Business Rule Engine, be a kind of assembly that is embedded in application program, and major function is to make operational decision making according to business rule.Existing Business Rule Engine has Drools, ILog, Jess etc.When using Business Rule Engine, the business rule design tool need to overlap for the special exploitation one of the business of company in IT team, then consigns to business rule deviser use.This development mode shortcoming one: the exploitation of similar this business rule design tool is all for application-specific usually, think the integrated service regulation engine if that is to say each specific large-scale application, must be all business rule design tool of its exploitation specially, and lack a kind of general suitable all companies of business rule design tool, design their business rule.Its two: this business rule design tool is the designer of the rule language of a certain specific transactions regulation engine (as ILog or Drools) in essence, and for the syntax format aspect of rule language, different Business Rule Engine providers do things in his own way basically, lack a kind of unified standard, the description on the rule language aspect also will be subject to the restriction of concrete Business Rule Engine for business rule thus.
Summary of the invention
The problem that lacks versatility, is subject to the constraint of specific Business Rule Engine for solving the existing business rule, the invention provides a kind of business rule method for designing of service-oriented service based regulation engine, and its embodiment is as follows:
The business rule method for designing of service-oriented service based regulation engine, comprise the steps:
Create a graphic editor;
The unified service regulation modeling language pel storehouse of definition in the toolbar of graphic editor, the pel in described pel storehouse comprise rule set label pel, regular label pel, condition label pel, label pel, service labels pel, operational symbol containers labels pel, signature pel, operational symbol label pel as a result;
choose pel from the pel storehouse in the editing area of graphic editor, district edits primitive attribute by properties view, and carry out nested according to the Business Rule Engine structure pel, realize the graphical description of business rule, describedly pel is carried out nested method according to the Business Rule Engine structure be: the nested regular label pel of rule set label pel, rule label pel Nested conditions label pel and label pel as a result, the nested service labels pel of condition label pel, operational symbol containers labels pel and signature pel, operational symbol containers labels pel nested operation symbol label pel, the nested service labels pel of label pel as a result,
Regular label pel according to priority is linked in sequence;
The object that creates in editing machine is generated unified service regulation modeling language code;
To unify the code conversion of service regulation modeling language is the rule language code.
In such scheme, regular label pel according to priority is linked in sequence, refers to the regular line with arrow, regular label pel is linked in sequence, to determine the priority between rule, wherein priority value successively decreases by the arrow direction.
As preferred version of the present invention, the present invention can do following design:
Use the graphical editing frame GEF based on Java to create described graphic editor;
Define unified service regulation modeling language with XML;
Mapping relations between described unified service regulation modeling language and rule language realize with XML, and described rule language is Drools or ILog or Jess.
Above-mentioned GEF, its full name are Graphical Editor Framework;
Above-mentioned XML, its full name are Extensible Markup Language, and Chinese implication is extend markup language.
The objective of the invention is to propose a kind of business rule method for designing of service based regulation engine, use the method to design business rule in the application of SOA framework.Be characterized in that the business rule that designs different SOA application is had versatility, and the constraint that is not subject to certain specific Business Rule Engine.
The inventive method consists of two processes: the conversion of the Graphic Design of business rule and rule language code.
Below principle of the present invention is described in detail:
Unified service regulation modeling language:
For realizing the method, the present invention proposes a kind of general Design with Rule language of XML-based, namely unify the service regulation modeling language, this is unified the service regulation modeling language and is in the present invention core status, structurally there are mapping relations in the rule language of it and Business Rule Engine, and these mapping relations can be carried out the unidirectional conversion from unified service regulation modeling language code to the rule language code.The schema of unified service regulation modeling language as shown in Figure 1.
The rule language mapping table:
For realizing the method, the present invention proposes a kind of storage and unifies the mapping table of the corresponding relation on service regulation modeling language and rule language (service based regulation engine) syntactic structure, in the time will changing into the rule language of Business Rule Engine to unified service regulation modeling language code, will use this mapping table as the foundation that transforms.Can develop corresponding mapping table for different Business Rule Engines.Below the source code for the mapping table example of Drools regulation engine exploitation:
The Graphic Design of business rule:
The invention provides the designer of a MVC pattern, can design business rule in the mode of graphically editing, the code of this Process Design business rule out is based on unified service regulation modeling language.The label of unified service regulation modeling language and the pel corresponding relation of view layer be as shown in Table 1:
Table one:
| Tag name | The label classification | Pel | Explanation |
| <ruleset> | Logical-tag | R s | Rule set |
| <rule> | Logical-tag | R | Rule |
| <when> | Logical-tag | W hen | Condition |
| <then> | Logical-tag | T hen | Result |
| <param> | Logical-tag | V | Variable |
| <service> | Service labels | S | Service |
| <package> | Environmental labels | P | The bag name |
| <opt> | The operational symbol label | O pt | The operational symbol container |
| <and> | The operational symbol label | && | With |
| <or> | The operational symbol label | || | Or |
| <not> | The operational symbol label | ！ | Non- |
| <equal> | The operational symbol label | ＝ | Equal |
| <add> | The operational symbol label | + | Add |
| <sub> | The operational symbol label | - | Subtract |
| <divide> | The operational symbol label | \ | Remove |
| <multiply> | The operational symbol label | × | Take advantage of |
| <modulo> | The operational symbol label | ％ | Delivery |
| <addequal> | The operational symbol label | +＝ | Add etc. |
| <subequal> | The operational symbol label | -＝ | Subtract etc. |
| <divideequal> | The operational symbol label | /＝ | Remove etc. |
| <mutiplyequal> | The operational symbol label | ×＝ | Take advantage of etc. |
| <moduloequal> | The operational symbol label | ％＝ | Mould etc. |
| <lt> | The operational symbol label | ＜ | Less than |
| <gt> | The operational symbol label | ＞ | Greater than |
| <openparenthesi> | The operational symbol label | ( | Left parenthesis |
| <closeparenthesi> | The operational symbol label | ) | Right parenthesis |
Design the business rule of SOA application with unified service regulation modeling language, citation form is＜ruleset〉label is as root element,＜ruleset〉comprise＜when under element and＜then〉label is right---represent respectively condition and result.＜when〉in label be one about＜service the expression formula of label,＜then〉comprise sequence of operations in label, comprising some calling service.
According to concrete business rule, take out respectively its condition part and conclusion part, condition part is expressed with the expression formula of unified service regulation modeling language, and put into＜when＜/when〉label is to inner, conclusion part comprises sequence of operations, comprise the calling of service, put into＜then＜/then〉label is to inner.
The conversion of rule language code:
After the Graphic Design of business rule finishes, will generate the code of one section unified service regulation modeling language, the rule language transcoder module is responsible for unified service regulation modeling language code is converted to regular language codes.The translation example of rule language transcoder module as shown in Figure 2, as shown in Figure 3, transfer principle is finally given regulation engine and is gone to carry out by conversion rule language code out.
Effect of the present invention: the business rule design proposal in the SOA application that the present invention proposes a kind of relative simplification, use and unify the service regulation modeling language as intermediate language, shield the difference of different business regulation engine on rule language, with being fit to the business rule deviser, directly used the present invention to design business rule and the participation that need not IT team.
The nested editor of pel of the present invention can also divide the page to complete, and can do following design for this reason:
The editing area of described graphic editor has three pages, controlled by three sub-editing machines respectively, described three sub-editing machines are Ruleset editing machine, Rule editing machine, xml editor, open by the Ruleset button in button area, Rule button, XML button respectively;
The method of the nested regular label pel of described rule set label pel is as follows: with mouse, click the Ruleset button, open the editing area page of Ruleset editing machine, first with rule set label pel from toolbar with mouse drag in editing area, then with regular label pel from toolbar with mouse drag in rule set label pel;
described regular label pel Nested conditions label pel and the method for label pel is as follows as a result: click regular label pel to be edited with mouse in the Ruleset editing machine, click again the Rule button, open the editing area page of Rule editing machine, editing area demonstrates this regular label pel to be edited, first with condition label pel and as a result the label pel from toolbar with mouse drag in regular label pel, then with the service labels pel, operational symbol containers labels pel and signature pel from toolbar with mouse drag in condition label pel, again with the service labels pel from toolbar with mouse drag in label pel as a result,
Described that the object that creates in editing machine is generated the method for unified service regulation modeling language code is as follows: clicking the XML button with mouse, is the unified service regulation modeling language code that flow for displaying figure generates in the editing area page of xml editor;
Described will to unify the code conversion of service regulation modeling language be that the method for rule language code is as follows: click the rule language switching button that arranges on graphic editor with mouse, will to unify the code conversion of service regulation modeling language be the rule language code and leave in computer memory.
Rule language switching button in such scheme is convert to drl button, as shown in Figure 4, to unify service regulation modeling language code create-rule file after clicking convert to drl button, leave in local hard drive, as D: convert the drl catalogue, all can open and browse with text editor arbitrarily, and can be used by regulation engine.
Three sub-editing machines of above-mentioned rule designer, as shown in Figure 4, Figure 5, the Rule editing machine is used for editing Rule label and daughter element thereof specially.The use-pattern of Rule editing machine is as follows: choose a Rule graphic element in the Ruleset editing machine, then click the Rule button, just entered the editing interface of selected Rule element.Method of operating: left button is clicked the pel on the toolbar of left side, at editing area drag and drop pel, and a tag element of each pel corresponding with service rule modeling language.Select a pel, can be at the attribute of this pel of properties view inediting.Realized nest relation between pel, certain pel and subgraph unit thereof be certain label and the subtab thereof of corresponding unified service regulation modeling language respectively.
Graphic editor of the present invention realize principle:
Graphic editor of the present invention need comprise 3 sub-editing machines, and first is used for the editing rule collection; Second editing machine is attached to first, is used for certain specific rules that editing rule is concentrated; The 3rd editing machine is xml editor, is text editor in essence, is used for showing the unified service regulation modeling language code that transforms out.
GEF creates this multipage editing machine, can derived class org.eclipse.ui.part.MultiPageEditorPart, be called for short MultiPageEditorPart.Add sub-editing machine, need to realize the createPages () method of MultiPageEditorPart, and use in the method addPage (IEditorPart editor, IEditorInput input) method to add sub-editing machine.In this example, first has inherited figure new edited device class GraphicalEditorWithPalette with second sub-editing machine, and the 3rd editing machine inherited text editor class TextEditor.
, owing to there is certain contact in switching between the multipage editing machine page, so when page switching occurs, need to write the event code of page switching between the page.Suppose N the sub-editing machine page arranged, MultiPageEditorPart provides different numbering one from 0 to N-1 for each page, when the page switches, MultiPageEditorPart captures this event, and give pageChange (int index) method and process, and the numbering of the page that is switched to is passed to pageChange (int index) method as parameter.
This example has three sub-editing machines, therefore be numbered respectively 0,1,2.
Be switched to editing machine No. 1 from No. 0 editing machine, namely from the rule set editing machine, be switched to rule editor:
Be switched to editing machine No. 1 from No. 0 editing machine, need to be recorded in the selected corresponding model object of rule pel in No. 0 editing machine, so all operations in No. 1 editing machine subsequently is all for this object.
No. 0 or No. 1 editing machine are switched to editing machine No. 2, namely are switched to text editor:
Only need model object is changed into unified service regulation modeling language code, and show in No. 2 editing machines.
The page switch instances of other situations,, owing to not needing to record extra information, therefore do not need to write extra code.
Description of drawings
Shown in Figure 1 is the Schema definition of unified service regulation modeling language;
Shown in Figure 2 is rule language code conversion example;
Shown in Figure 3 is the principle that realizes of the present invention;
Shown in Figure 4 is in graphic editor rule set design interface and design example;
Shown in Figure 5 is in graphic editor Design with Rule interface and design example;
Shown in Figure 6 is the unified service regulation modeling language example code that generates after Graphic Design;
Shown in Figure 7 is to change into the rule language example code by unified service regulation modeling language code.
Embodiment
Use the present invention to write the business rule of SOA application, need to keep the connectedness with Web Service container when operation.
, according to the business rule collection, take out the condition and conclusion part of every rule, then by the graphical editing interface of unified service regulation modeling language, generate corresponding unified service regulation modeling language code., for the Business Rule Engine (as Drools, ILog etc.) that concrete BOTTOM LAYER ENVIRONMENT is disposed, apply corresponding mapping table.Unified service regulation modeling language code is with corresponding mapping table jointly as the input of rule language converter, and the rule language code and the delivered service regulation engine that finally generate corresponding Business Rule Engine are carried out.
Take the Drools Business Rule Engine as example, Fig. 4 is the interface of unified service regulation modeling language Graphic Design device, and this page is used for design＜ruleset 〉, newly-built two rules in example.Select a rule to click again " rule " option, enter＜ruleset〉daughter element＜rule Graphic Design, as shown in Figure 5, the left side be＜when design, i.e. condition, the right is＜then〉design, i.e. conclusion.After Graphic Design was completed, point the 3rd tab " test.xml ", namely generated unified service regulation modeling language code, as shown in Figure 6, clicks finally " convert to drl ", and the rule language code of the Drools of generation as shown in Figure 7.
Claims (2)
1. the business rule method for designing of service-oriented service based regulation engine, is characterized in that: comprise the steps:
Create a graphic editor;
The unified service regulation modeling language pel storehouse of definition in the toolbar of graphic editor, the pel in described pel storehouse comprise rule set label pel, regular label pel, condition label pel, label pel, service labels pel, operational symbol containers labels pel, signature pel, operational symbol label pel as a result;
choose pel from the pel storehouse in the editing area of graphic editor, district edits primitive attribute by properties view, and carry out nested according to the Business Rule Engine structure pel, realize the graphical description of business rule, describedly pel is carried out nested method according to the Business Rule Engine structure be: the nested regular label pel of rule set label pel, rule label pel Nested conditions label pel and label pel as a result, the nested service labels pel of condition label pel, operational symbol containers labels pel and signature pel, operational symbol containers labels pel nested operation symbol label pel, the nested service labels pel of label pel as a result,
Regular label pel according to priority is linked in sequence;
The object that creates in editing machine is generated unified service regulation modeling language code;
To unify the code conversion of service regulation modeling language is the rule language code;
The editing area of described graphic editor has three pages, controlled by three sub-editing machines respectively, described three sub-editing machines are Ruleset editing machine, Rule editing machine, xml editor, open by the Ruleset button in button area, Rule button, XML button respectively;
The method of the nested regular label pel of described rule set label pel is as follows: with mouse, click the Ruleset button, open the editing area page of Ruleset editing machine, first with rule set label pel from toolbar with mouse drag in editing area, then with regular label pel from toolbar with mouse drag in rule set label pel;
described regular label pel Nested conditions label pel and the method for label pel is as follows as a result: click regular label pel to be edited with mouse in the Ruleset editing machine, click again the Rule button, open the editing area page of Rule editing machine, editing area demonstrates this regular label pel to be edited, first with condition label pel and as a result the label pel from toolbar with mouse drag in regular label pel, then with the service labels pel, operational symbol containers labels pel and signature pel from toolbar with mouse drag in condition label pel, again with the service labels pel from toolbar with mouse drag in label pel as a result,
Described that the object that creates in editing machine is generated the method for unified service regulation modeling language code is as follows: clicking the XML button with mouse, is the unified service regulation modeling language code that flow for displaying figure generates in the editing area page of xml editor;
Described will to unify the code conversion of service regulation modeling language be that the method for rule language code is as follows: click the rule language switching button that arranges on graphic editor with mouse, will to unify the code conversion of service regulation modeling language be the rule language code and leave in computer memory.
2. the business rule method for designing of service-oriented service based regulation engine according to claim 1 is characterized in that:
Use the graphical editing frame GEF based on Java to create described graphic editor;
Define unified service regulation modeling language with XML;
Mapping relations between described unified service regulation modeling language and rule language realize with XML, and described rule language is Drools or ILog or Jess.
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| CN107220058A (en) * | 2017-06-05 | 2017-09-29 | 厦门美柚信息科技有限公司 | The realization method and system of Business Rule Engine |
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| CN111078230A (en) * | 2019-12-06 | 2020-04-28 | 中国建设银行股份有限公司 | Code generation method and device |
| CN112445461B (en) * | 2020-11-13 | 2024-06-25 | 中信银行股份有限公司 | Business rule generation method and device, electronic equipment and readable storage medium |
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