/**
* 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.bpmn2.xml;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import org.drools.bpmn2.core.Definitions;
import org.drools.bpmn2.core.Escalation;
import org.drools.bpmn2.core.Interface;
import org.drools.bpmn2.core.ItemDefinition;
import org.drools.bpmn2.core.Message;
import org.drools.compiler.xml.ProcessBuildData;
import org.drools.xml.BaseAbstractHandler;
import org.drools.xml.ExtensibleXmlParser;
import org.drools.xml.Handler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
public class MessageHandler extends BaseAbstractHandler implements Handler {
@SuppressWarnings("unchecked")
public MessageHandler() {
if ((this.validParents == null) && (this.validPeers == null)) {
this.validParents = new HashSet();
this.validParents.add(Definitions.class);
this.validPeers = new HashSet();
this.validPeers.add(null);
this.validPeers.add(ItemDefinition.class);
this.validPeers.add(Message.class);
this.validPeers.add(Interface.class);
this.validPeers.add(Escalation.class);
this.validPeers.add(Error.class);
this.allowNesting = false;
}
}
@SuppressWarnings("unchecked")
public Object start(final String uri, final String localName,
final Attributes attrs, final ExtensibleXmlParser parser)
throws SAXException {
parser.startElementBuilder(localName, attrs);
String id = attrs.getValue("id");
String itemRef = attrs.getValue("itemRef");
Map<String, ItemDefinition> itemDefinitions = (Map<String, ItemDefinition>)
((ProcessBuildData) parser.getData()).getMetaData("ItemDefinitions");
if (itemDefinitions == null) {
throw new IllegalArgumentException("No item definitions found");
}
ItemDefinition itemDefinition = itemDefinitions.get(itemRef);
if (itemDefinition == null) {
throw new IllegalArgumentException("Could not find itemDefinition " + itemRef);
}
ProcessBuildData buildData = (ProcessBuildData) parser.getData();
Map<String, Message> messages = (Map<String, Message>)
((ProcessBuildData) parser.getData()).getMetaData("Messages");
if (messages == null) {
messages = new HashMap<String, Message>();
buildData.setMetaData("Messages", messages);
}
Message message = new Message(id);
message.setType(itemDefinition.getStructureRef());
messages.put(id, message);
return message;
}
public Object end(final String uri, final String localName,
final ExtensibleXmlParser parser) throws SAXException {
parser.endElementBuilder();
return parser.getCurrent();
}
public Class<?> generateNodeFor() {
return Message.class;
}
}