[seam-commits] Seam SVN: r11446 - branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools.

Author: tsurdilovic Date: 2009-08-28 15:45:50 -0400 (Fri, 28 Aug 2009) New Revision: 11446 Added: branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/FlowProcessInterceptor.java Modified: branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/AbortProcess.java branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/SignalEvent.java branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/StartProcess.java Log: Drools5 Integration. Modified: branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/AbortProcess.java =================================================================== --- branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/AbortProcess.java 2009-08-28 13:47:56 UTC (rev 11445) +++ branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/AbortProcess.java 2009-08-28 19:45:50 UTC (rev 11446) @@ -1,6 +1,31 @@ package org.jboss.seam.annotations.drools; +import static java.lang.annotation.ElementType.METHOD; +import static java.lang.annotation.RetentionPolicy.RUNTIME; + +import java.lang.annotation.Documented; +import java.lang.annotation.Retention; +import java.lang.annotation.Target; + +/** + * Marks a method as causing drools process to be aborted. + * + * @author Tihomir Surdilovic + */ + +@Target( METHOD ) +@Retention( RUNTIME ) +@Documented public @interface AbortProcess { + /** + * Name of the StatefulKnowledgeSession component. + * @return an EL expression + */ + String ksession(); + /** + * The process name to be aborted. + */ + String processName(); } Added: branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/FlowProcessInterceptor.java =================================================================== --- branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/FlowProcessInterceptor.java (rev 0) +++ branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/FlowProcessInterceptor.java 2009-08-28 19:45:50 UTC (rev 11446) @@ -0,0 +1,97 @@ +package org.jboss.seam.annotations.drools; + +import java.lang.reflect.Method; +import java.util.Map; + +import org.drools.runtime.process.ProcessInstance; +import org.jboss.seam.Component; +import org.jboss.seam.annotations.intercept.AroundInvoke; +import org.jboss.seam.annotations.intercept.Interceptor; +import org.jboss.seam.core.BijectionInterceptor; +import org.jboss.seam.intercept.InvocationContext; +import org.jboss.seam.log.LogProvider; +import org.jboss.seam.log.Logging; + +/** + * Implements annotation-based flow process demarcation. + * + * @author Tihomir Surdilovic + */ +@Interceptor(stateless=true, around=BijectionInterceptor.class) +public class FlowProcessInterceptor +{ + private static final LogProvider log = Logging.getLogProvider( FlowProcessInterceptor.class ); + + @AroundInvoke + public Object aroundInvoke(InvocationContext invocation) throws Exception + { + if ( !beforeInvocation(invocation) ) + { + return null; + } + else + { + return afterInvocation( invocation, invocation.proceed() ); + } + } + + private boolean beforeInvocation(InvocationContext invocationContext) + { + Method method = invocationContext.getMethod(); + if ( method.isAnnotationPresent(StartProcess.class) ) + { + log.info( "encountered @StartProcess" ); + StartProcess tag = method.getAnnotation(StartProcess.class); + org.drools.runtime.StatefulKnowledgeSession ksession = + (org.drools.runtime.StatefulKnowledgeSession) Component.getInstance(tag.ksession(), true); + + if(tag.processData() != "") { + ksession.startProcess(tag.processName(), (Map<String, Object>) Component.getInstance(tag.processData())); + } else { + ksession.startProcess(tag.processName()); + } + } + else if ( method.isAnnotationPresent(AbortProcess.class) ) { + log.info( "encountered @AbortProcess" ); + AbortProcess tag = method.getAnnotation(AbortProcess.class); + org.drools.runtime.StatefulKnowledgeSession ksession = + (org.drools.runtime.StatefulKnowledgeSession) Component.getInstance(tag.ksession(), true); + ksession.getProcessInstances(); + for(ProcessInstance processInstance: ksession.getProcessInstances()) { + if(processInstance.getProcessName().equals(tag.processName())) { + ksession.abortProcessInstance(processInstance.getId()); + } + } + } + else if ( method.isAnnotationPresent(SignalEvent.class) ) { + log.info( "encountered @SignalEvent" ); + SignalEvent tag = method.getAnnotation(SignalEvent.class); + org.drools.runtime.StatefulKnowledgeSession ksession = + (org.drools.runtime.StatefulKnowledgeSession) Component.getInstance(tag.ksession(), true); + + if(tag.processName() != "") { + for(ProcessInstance processInstance: ksession.getProcessInstances()) { + if(processInstance.getProcessName().equals(tag.processName())) { + if (tag.eventData() != "") { + processInstance.signalEvent(tag.eventType(), Component.getInstance(tag.eventData())); + } else { + processInstance.signalEvent(tag.eventType(), null); + } + } + } + } else { + if (tag.eventData() != "") { + ksession.signalEvent(tag.eventType(), Component.getInstance(tag.eventData())); + } else { + ksession.signalEvent(tag.eventType(), null); + } + } + } + return true; + } + + private Object afterInvocation(InvocationContext invocation, Object result) + { + return result; + } +} Modified: branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/SignalEvent.java =================================================================== --- branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/SignalEvent.java 2009-08-28 13:47:56 UTC (rev 11445) +++ branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/SignalEvent.java 2009-08-28 19:45:50 UTC (rev 11446) @@ -22,24 +22,23 @@ public @interface SignalEvent { /** - * An EL expression that evaluates to a StatefulKnowledgeSession. - * @return an EL expression + * Name of the StatefulKnowledgeSession component. */ - String ksession() default ""; + String ksession(); /** - * The process instance id to be started. + * The process name. */ - String processInstanceId() default ""; + String processName(); /** * The event type. */ - String eventType() default ""; + String eventType(); /** - * An EL expression that evaluates to Event Data. - * @return an EL expression + * Name of the component which unwraps itself to Object + * and provides event data. */ String eventData() default ""; Modified: branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/StartProcess.java =================================================================== --- branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/StartProcess.java 2009-08-28 13:47:56 UTC (rev 11445) +++ branches/community/Seam_2_2_Drools5/src/main/org/jboss/seam/annotations/drools/StartProcess.java 2009-08-28 19:45:50 UTC (rev 11446) @@ -18,13 +18,18 @@ public @interface StartProcess { /** - * An EL expression that evaluates to a StatefulKnowledgeSession. - * @return an EL expression + * Name of the StatefulKnowledgeSession. component. */ - String ksession() default ""; + String ksession(); /** - * The process id to be started. + * The process name to be started. */ - String processId() default ""; + String processName(); + + /** + * Name of the component which unwraps itself to Map<Object, String> + * and provides process data. + */ + String processData() default ""; }