package org.drools.runtime.pipeline.impl;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.xml.transform.stream.StreamSource;
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.StatefulKnowledgeSession;
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.Splitter;
import org.drools.runtime.pipeline.Transformer;
import org.drools.runtime.rule.FactHandle;
import org.milyn.Smooks;
import org.milyn.io.StreamUtils;
public class SmookStatefulSessionTest extends TestCase {
public void testDirectRoot() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newClassPathResource( "test_SmooksDirectRoot.drl",
SmookStatefulSessionTest.class ),
ResourceType.DRL );
assertFalse( kbuilder.hasErrors() );
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
List list = new ArrayList();
ksession.setGlobal( "list",
list );
Action executeResultHandler = PipelineFactory.newExecuteResultHandler();
KnowledgeRuntimeCommand insertStage = PipelineFactory.newStatefulKnowledgeSessionInsert();
insertStage.setReceiver( executeResultHandler );
// Instantiate Smooks with the config...
Smooks smooks = new Smooks( getClass().getResourceAsStream( "smooks-config.xml" ) );
Transformer transformer = PipelineFactory.newSmooksFromSourceTransformer( smooks,
"orderItem" );
transformer.setReceiver( insertStage );
Pipeline pipeline = PipelineFactory.newStatefulKnowledgeSessionPipeline( ksession );
pipeline.setReceiver( transformer );
ResultHandlerImpl resultHandler = new ResultHandlerImpl();
pipeline.insert( getClass().getResourceAsStream( "SmooksDirectRoot.xml" ),
resultHandler );
ksession.fireAllRules();
Map<FactHandle, Object> handles = (Map<FactHandle, Object>) resultHandler.getObject();
assertEquals( 1,
handles.size() );
assertEquals( 1,
list.size() );
assertEquals( "example.OrderItem",
list.get( 0 ).getClass().getName() );
}
public void testNestedIterable() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add( ResourceFactory.newClassPathResource( "test_SmooksNestedIterable.drl",
SmookStatefulSessionTest.class ),
ResourceType.DRL );
assertFalse( kbuilder.hasErrors() );
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
List list = new ArrayList();
ksession.setGlobal( "list",
list );
Action executeResultHandler = PipelineFactory.newExecuteResultHandler();
KnowledgeRuntimeCommand insertStage = PipelineFactory.newStatefulKnowledgeSessionInsert();
insertStage.setReceiver( executeResultHandler );
Splitter splitter = PipelineFactory.newIterateSplitter();
splitter.setReceiver( insertStage );
Expression expression = PipelineFactory.newMvelExpression( "children" );
expression.setReceiver( splitter );
// Instantiate Smooks with the config...
Smooks smooks = new Smooks( getClass().getResourceAsStream( "smooks-config.xml" ) );
Transformer transformer = PipelineFactory.newSmooksFromSourceTransformer( smooks,
"root" );
transformer.setReceiver( expression );
Pipeline pipeline = PipelineFactory.newStatefulKnowledgeSessionPipeline( ksession );
pipeline.setReceiver( transformer );
ResultHandlerImpl resultHandler = new ResultHandlerImpl();
pipeline.insert( new StreamSource( getClass().getResourceAsStream( "SmooksNestedIterable.xml" ) ),
resultHandler );
Map<FactHandle, Object> handles = (Map<FactHandle, Object>) resultHandler.getObject();
ksession.fireAllRules();
assertEquals( 2,
handles.size() );
assertEquals( 2,
list.size() );
assertEquals( "example.OrderItem",
list.get( 0 ).getClass().getName() );
assertEquals( "example.OrderItem",
list.get( 1 ).getClass().getName() );
assertNotSame( list.get( 0 ),
list.get( 1 ) );
}
private static byte[] readInputMessage(InputStream stream) {
try {
return StreamUtils.readStream( stream );
} catch ( IOException e ) {
e.printStackTrace();
return "<no-message/>".getBytes();
}
}
public static class ResultHandlerImpl
implements
ResultHandler {
Object object;
public void handleResult(Object object) {
this.object = object;
}
public Object getObject() {
return this.object;
}
}
}