/**
* 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.legacy.beta1;
import java.util.HashMap;
import java.util.Map;
import org.drools.process.core.Work;
import org.drools.process.core.impl.WorkImpl;
import org.drools.workflow.core.Node;
import org.drools.workflow.core.node.WorkItemNode;
import org.drools.xml.ExtensibleXmlParser;
import org.w3c.dom.Element;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
public class TaskHandler extends AbstractNodeHandler {
protected Node createNode(Attributes attrs) {
return new WorkItemNode();
}
@SuppressWarnings("unchecked")
public Class generateNodeFor() {
return Node.class;
}
protected void handleNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
super.handleNode(node, element, uri, localName, parser);
WorkItemNode workItemNode = (WorkItemNode) node;
String name = getTaskName(element);
Work work = new WorkImpl();
work.setName(name);
workItemNode.setWork(work);
Map<String, String> dataInputs = new HashMap<String, String>();
Map<String, String> dataOutputs = new HashMap<String, String>();
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("ioSpecification".equals(nodeName)) {
readIoSpecification(xmlNode, dataInputs, dataOutputs);
} else if ("dataInputAssociation".equals(nodeName)) {
readDataInputAssociation(xmlNode, workItemNode, dataInputs);
} else if ("dataOutputAssociation".equals(nodeName)) {
readDataOutputAssociation(xmlNode, workItemNode, dataOutputs);
}
xmlNode = xmlNode.getNextSibling();
}
}
protected String getTaskName(final Element element) {
return element.getAttribute("taskName");
}
protected void readIoSpecification(org.w3c.dom.Node xmlNode, Map<String, String> dataInputs, Map<String, String> dataOutputs) {
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
while (subNode instanceof Element) {
String subNodeName = subNode.getNodeName();
if ("dataInput".equals(subNodeName)) {
String id = ((Element) subNode).getAttribute("id");
String inputName = ((Element) subNode).getAttribute("name");
dataInputs.put(id, inputName);
}
if ("dataOutput".equals(subNodeName)) {
String id = ((Element) subNode).getAttribute("id");
String outputName = ((Element) subNode).getAttribute("name");
dataOutputs.put(id, outputName);
}
subNode = subNode.getNextSibling();
}
}
protected void readDataInputAssociation(org.w3c.dom.Node xmlNode, WorkItemNode workItemNode, Map<String, String> dataInputs) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
if ("assignment".equals(subNode.getNodeName())) {
org.w3c.dom.Node subSubNode = subNode.getFirstChild();
String from = subSubNode.getTextContent();
subNode = subNode.getNextSibling();
subNode = subNode.getNextSibling();
String to = subNode.getTextContent();
workItemNode.getWork().setParameter(dataInputs.get(to), from);
} else {
String from = subNode.getTextContent();
// targetRef
subNode = subNode.getNextSibling();
String to = subNode.getTextContent();
workItemNode.addInMapping(
dataInputs.get(to),
from);
}
}
protected void readDataOutputAssociation(org.w3c.dom.Node xmlNode, WorkItemNode workItemNode, Map<String, String> dataOutputs) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
String from = subNode.getTextContent();
// targetRef
subNode = subNode.getNextSibling();
String to = subNode.getTextContent();
workItemNode.addOutMapping(dataOutputs.get(from), to);
}
@Override
public void writeNode(Node node, StringBuilder xmlDump, boolean includeMeta) {
throw new IllegalArgumentException(
"Writing out should be handled by the WorkItemNodeHandler");
}
}