/*
* 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.runtime.rule;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import org.drools.command.Context;
import org.drools.command.IdentifiableResult;
import org.drools.command.impl.GenericCommand;
import org.drools.command.impl.KnowledgeCommandContext;
import org.drools.impl.StatefulKnowledgeSessionImpl;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.rule.QueryResults;
import org.drools.runtime.rule.Variable;
@XmlAccessorType( XmlAccessType.NONE )
public class QueryCommand implements GenericCommand<QueryResults>, IdentifiableResult {
private static final long serialVersionUID = 510l;
@XmlAttribute(name = "out-identifier")
private String outIdentifier;
@XmlAttribute(required = true)
private String name;
@XmlElement
private List<Object> arguments;
public QueryCommand() {
}
public QueryCommand(String outIdentifier, String name, Object... arguments) {
this.outIdentifier = outIdentifier;
this.name = name;
if ( arguments != null ) {
this.arguments = Arrays.asList( arguments );
} else {
this.arguments = Collections.EMPTY_LIST;
}
}
public String getOutIdentifier() {
return outIdentifier;
}
public void setOutIdentifier(String outIdentifier) {
this.outIdentifier = outIdentifier;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Object> getArguments() {
if (this.arguments == null) {
this.arguments = Collections.emptyList();
}
return this.arguments;
}
public void setArguments(List<Object> arguments) {
if ( arguments == null || arguments.isEmpty() ) {
this.arguments = Collections.emptyList();
}
this.arguments = arguments;
}
public QueryResults execute(Context context) {
StatefulKnowledgeSession ksession = ((KnowledgeCommandContext) context).getStatefulKnowledgesession();
if ( this.arguments == null || this.arguments.isEmpty() ) {
this.arguments = Collections.emptyList();
}
for (int j = 0; j < arguments.size(); j++) {
if (arguments.get(j) instanceof Variable) {
arguments.set(j, Variable.v);
}
}
QueryResults results = ksession.getQueryResults( name, this.arguments.toArray() );
if ( this.outIdentifier != null ) {
if(((StatefulKnowledgeSessionImpl)ksession).session.getExecutionResult() != null){
((StatefulKnowledgeSessionImpl)ksession).session.getExecutionResult().getResults().put( this.outIdentifier, results );
}
}
return results;
}
public String toString() {
return "QueryCommand{" +
"outIdentifier='" + outIdentifier + '\'' +
", name='" + name + '\'' +
", arguments=" + arguments +
'}';
}
}