/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.command;
import java.util.HashMap;
import org.drools.command.impl.GenericCommand;
import org.drools.command.impl.KnowledgeCommandContext;
import org.drools.common.DefaultFactHandle;
import org.drools.impl.StatefulKnowledgeSessionImpl;
import org.drools.runtime.impl.ExecutionResultImpl;
import org.kie.command.Command;
import org.kie.command.Context;
import org.kie.runtime.ExecutionResults;
import org.kie.runtime.StatefulKnowledgeSession;
import org.kie.runtime.rule.FactHandle;
public class ExecuteCommand
implements
GenericCommand<ExecutionResults> {
private String outIdentifier;
private Command<ExecutionResults> command;
private boolean disconnected = false;
public ExecuteCommand(Command command) {
this.command = command;
}
public ExecuteCommand(String identifier, Command command) {
this.command = command;
this.outIdentifier = identifier;
}
public ExecuteCommand(String identifier, Command command, boolean disconnected) {
this.command = command;
this.outIdentifier = identifier;
this.disconnected = disconnected;
}
public ExecuteCommand(Command command, boolean disconnected) {
this.command = command;
this.disconnected = disconnected;
}
public ExecutionResults execute(Context context) {
StatefulKnowledgeSession ksession = ((KnowledgeCommandContext) context).getStatefulKnowledgesession();
ExecutionResults kresults = null;
if( ksession instanceof StatefulKnowledgeSessionImpl ) {
kresults = ((StatefulKnowledgeSessionImpl)ksession).execute(context, this.command );
}
else {
// Graceful failure
kresults = ksession.execute(this.command);
}
if ( this.outIdentifier != null ) {
((ExecutionResultImpl)((KnowledgeCommandContext) context ).getExecutionResults()).getResults().put( this.outIdentifier, kresults );
}
if (disconnected) {
ExecutionResultImpl disconnectedResults = new ExecutionResultImpl();
HashMap<String, Object> disconnectedHandles = new HashMap<String, Object>();
for (String key : kresults.getIdentifiers()) {
FactHandle handle = (FactHandle) kresults.getFactHandle(key);
if (handle != null) {
DefaultFactHandle disconnectedHandle = ((DefaultFactHandle) handle).clone();
disconnectedHandle.disconnect();
disconnectedHandles.put(key, disconnectedHandle);
}
}
disconnectedResults.setFactHandles(disconnectedHandles);
disconnectedResults.setResults((HashMap)((ExecutionResultImpl)kresults).getResults());
return disconnectedResults;
}
return kresults;
}
public Command getCommand() {
return this.command;
}
public String getOutIdentifier() {
return this.outIdentifier;
}
public void setOutIdentifier(String outIdentifier) {
this.outIdentifier = outIdentifier;
}
public String toString() {
return "session.execute(" + this.command + ");";
}
}