package org.drools.runtime.pipeline.impl;
import java.util.ArrayList;
import java.util.List;
import junit.framework.TestCase;
import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseFactory;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.io.ResourceFactory;
import org.drools.runtime.StatelessKnowledgeSession;
import org.drools.runtime.pipeline.Action;
import org.drools.runtime.pipeline.Expression;
import org.drools.runtime.pipeline.KnowledgeRuntimeCommand;
import org.drools.runtime.pipeline.Pipeline;
import org.drools.runtime.pipeline.PipelineFactory;
import org.drools.runtime.pipeline.ResultHandler;
import org.drools.runtime.pipeline.Transformer;
import com.thoughtworks.xstream.XStream;
public class XStreamStatelessSessionTest extends TestCase {
public void testXstreamDirectRoot() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newClassPathResource( "test_XStreamDirectRoot.drl",
XStreamStatefulSessionTest.class ),
ResourceType.DRL );
assertFalse( kbuilder.hasErrors() );
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();
List list = new ArrayList();
ksession.setGlobal( "list",
list );
Action executeResultHandler = PipelineFactory.newExecuteResultHandler();
Action assignResult = PipelineFactory.newAssignObjectAsResult();
assignResult.setReceiver( executeResultHandler );
KnowledgeRuntimeCommand batchExecution = PipelineFactory.newCommandExecutor();
batchExecution.setReceiver( assignResult );
KnowledgeRuntimeCommand insertStage = PipelineFactory.newInsertObjectCommand();
insertStage.setReceiver( batchExecution );
XStream xstream = new XStream();
Transformer transformer = PipelineFactory.newXStreamFromXmlTransformer( xstream );
transformer.setReceiver( insertStage );
Pipeline pipeline = PipelineFactory.newStatelessKnowledgeSessionPipeline( ksession );
pipeline.setReceiver( transformer );
ResultHandlerImpl resultHandler = new ResultHandlerImpl();
pipeline.insert( getClass().getResourceAsStream( "XStreamDirectRoot.xml" ),
resultHandler );
assertEquals( 1,
list.size() );
assertEquals( "example.OrderItem",
list.get( 0 ).getClass().getName() );
}
public void testXstreamNestedIterable() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newClassPathResource( "test_XStreamNestedIterable.drl",
XStreamStatefulSessionTest.class ),
ResourceType.DRL );
assertFalse( kbuilder.hasErrors() );
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();
List list = new ArrayList();
ksession.setGlobal( "list",
list );
Action executeResultHandler = PipelineFactory.newExecuteResultHandler();
Action assignResult = PipelineFactory.newAssignObjectAsResult();
assignResult.setReceiver( executeResultHandler );
KnowledgeRuntimeCommand batchExecution = PipelineFactory.newCommandExecutor();
batchExecution.setReceiver( assignResult );
KnowledgeRuntimeCommand insertElementsStage = PipelineFactory.newInsertElementsCommand();
insertElementsStage.setReceiver( batchExecution );
Expression mvelExpression = PipelineFactory.newMvelExpression( "this.children" );
mvelExpression.setReceiver( insertElementsStage );
XStream xstream = new XStream();
Transformer transformer = PipelineFactory.newXStreamFromXmlTransformer( xstream );
transformer.setReceiver( insertElementsStage );
Pipeline pipeline = PipelineFactory.newStatelessKnowledgeSessionPipeline( ksession );
pipeline.setReceiver( transformer );
ResultHandlerImpl resultHandler = new ResultHandlerImpl();
pipeline.insert( getClass().getResourceAsStream( "XStreamNestedIterable.xml" ),
resultHandler );
assertEquals( "example.OrderItem",
list.get( 0 ).getClass().getName() );
assertEquals( "example.OrderItem",
list.get( 1 ).getClass().getName() );
assertNotSame( list.get( 0 ),
list.get( 1 ) );
}
public static class ResultHandlerImpl
implements
ResultHandler {
Object object;
public void handleResult(Object object) {
this.object = object;
}
public Object getObject() {
return this.object;
}
}
}