Drools5學習筆記1-最常用API

 最常用到的核心介面API：

org.drools.builder.KnowledgeBuilder<br /> org.drools.KnowledgeBase<br /> org.drools.agent.KnowledgeAgent<br /> org.drools.runtime.StatefulKnowledgeSession<br /> org.drools.runtime.StatelessKnowledgeSession 

最常用到的工廠類：

org.drools.builder.KnowledgeBuilderFactory<br /> org.drools.io.ResourceFactory<br /> org.drools.KnowledgeBaseFactory<br /> org.drools.agent.KnowledgeAgentFactory 

典型例子：KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();<br />kbuilder.add( ResourceFactory.newUrlResource( url ),<br /> ResourceType.DRL );<br />if ( kbuilder.hasErrors() ) {<br /> System.err.println( builder.getErrors().toString() );<br />}<br />KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();<br />kbase.addKnowledgePackages( builder.getKnowledgePackages() );<br />StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession();<br />ksession.insert( new Fibonacci( 10 ) );<br />ksession.fireAllRules();<br />ksession.dispose();載入普通規則定義檔案的寫法：KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();<br />kbuilder.add( ResourceFactory.newUrlResource( url ),<br /> ResourceType.DRL );<br />if ( kbuilder.hasErrors() ) {<br /> System.err.println( builder.getErrors().toString() );<br />}<br />KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();<br />kbase.addKnowledgePackages( builder.getKnowledgePackages() );<br />StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession();<br />ksession.insert( new Fibonacci( 10 ) );<br />ksession.fireAllRules();<br />ksession.dispose();載入規則流資源檔的寫法：KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();<br />kbuilder.add( ResourceFactory.newUrlResource( url ),<br /> ResourceType.DRF );<br />if ( kbuilder.hasErrors() ) {<br /> System.err.println( builder.getErrors().toString() );<br />}<br />KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();<br />kbase.addKnowledgePackages( builder.getKnowledgePackages() );<br />StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession();<br />ksession.startProcess( "Buy Order Process" );<br />ksession.dispose();<br />載入決策樹，excel規則檔案的寫法：DecisionTableConfiguration dtconf = KnowledgeBuilderFactory.newDecisionTableConfiguration();<br />dtconf.setInputType( DecisionTableInputType.XLS );<br />dtconf.setWorksheetName( "Tables_2" );<br />kbuilder.add( ResourceFactory.newUrlResource( "file://IntegrationExampleTest.xls" ),<br /> ResourceType.DTABLE,<br /> dtconf );<br />以xml檔案配置規則資源檔，並且載入這個規則集合檔案的寫法：<change-set xmlns='http://drools.org/drools-5.0/change-set'<br />xmlns:xs='http://www.w3.org/2001/XMLSchema-instance'<br />xs:schemaLocation='http://drools.org/drools-5.0/change-set change-set-5.0.xsd' ><br /> <add><br /> <resource source='classpath:org/domain/someRules.drl' type='DRL' /><br /> <resource source='classpath:org/domain/aFlow.drf' type='DRF' /><br /> </add><br /></change-set><br />//載入規則集合檔案<br />KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();<br />kbuilder.add( ResourceFactory.newUrlResource( url ),<br /> ResourceType.ChangeSet );