/**
* 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.jbpm.bpmn2.xml;
import java.util.List;
import java.util.Map;
import org.drools.process.core.datatype.DataType;
import org.drools.process.core.datatype.impl.type.ObjectDataType;
import org.drools.xml.ExtensibleXmlParser;
import org.jbpm.bpmn2.core.ItemDefinition;
import org.jbpm.bpmn2.core.SequenceFlow;
import org.jbpm.compiler.xml.ProcessBuildData;
import org.jbpm.process.core.Context;
import org.jbpm.process.core.context.variable.VariableScope;
import org.jbpm.workflow.core.Node;
import org.jbpm.workflow.core.NodeContainer;
import org.jbpm.workflow.core.node.CompositeContextNode;
import org.jbpm.workflow.core.node.ForEachNode;
import org.w3c.dom.Element;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
public class SubProcessHandler extends AbstractNodeHandler {
protected Node createNode(Attributes attrs) {
CompositeContextNode result = new CompositeContextNode();
VariableScope variableScope = new VariableScope();
result.addContext(variableScope);
result.setDefaultContext(variableScope);
return result;
}
@SuppressWarnings("unchecked")
public Class generateNodeFor() {
return CompositeContextNode.class;
}
public Object end(final String uri, final String localName,
final ExtensibleXmlParser parser) throws SAXException {
final Element element = parser.endElementBuilder();
Node node = (Node) parser.getCurrent();
// determine type of event definition, so the correct type of node
// can be generated
boolean found = false;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("multiInstanceLoopCharacteristics".equals(nodeName)) {
// create new timerNode
ForEachNode forEachNode = new ForEachNode();
forEachNode.setId(node.getId());
forEachNode.setName(node.getName());
for (org.drools.definition.process.Node subNode: ((CompositeContextNode) node).getNodes()) {
forEachNode.addNode(subNode);
}
forEachNode.setMetaData("UniqueId", ((CompositeContextNode) node).getMetaData("UniqueId"));
forEachNode.setMetaData(ProcessHandler.CONNECTIONS, ((CompositeContextNode) node).getMetaData(ProcessHandler.CONNECTIONS));
VariableScope v = (VariableScope) ((CompositeContextNode) node).getDefaultContext(VariableScope.VARIABLE_SCOPE);
((VariableScope) ((CompositeContextNode) forEachNode.internalGetNode(2)).getDefaultContext(VariableScope.VARIABLE_SCOPE)).setVariables(v.getVariables());
node = forEachNode;
handleForEachNode(node, element, uri, localName, parser);
found = true;
break;
}
xmlNode = xmlNode.getNextSibling();
}
if (!found) {
handleCompositeContextNode(node, element, uri, localName, parser);
}
NodeContainer nodeContainer = (NodeContainer) parser.getParent();
nodeContainer.addNode(node);
return node;
}
@SuppressWarnings("unchecked")
protected void handleCompositeContextNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
super.handleNode(node, element, uri, localName, parser);
CompositeContextNode compositeNode = (CompositeContextNode) node;
List<SequenceFlow> connections = (List<SequenceFlow>)
compositeNode.getMetaData(ProcessHandler.CONNECTIONS);
ProcessHandler.linkConnections(compositeNode, connections);
ProcessHandler.linkBoundaryEvents(compositeNode);
}
@SuppressWarnings("unchecked")
protected void handleForEachNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
super.handleNode(node, element, uri, localName, parser);
ForEachNode forEachNode = (ForEachNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("dataInputAssociation".equals(nodeName)) {
readDataInputAssociation(xmlNode, forEachNode);
} else if ("multiInstanceLoopCharacteristics".equals(nodeName)) {
readMultiInstanceLoopCharacteristics(xmlNode, forEachNode, parser);
}
xmlNode = xmlNode.getNextSibling();
}
List<SequenceFlow> connections = (List<SequenceFlow>)
forEachNode.getMetaData(ProcessHandler.CONNECTIONS);
ProcessHandler.linkConnections(forEachNode, connections);
ProcessHandler.linkBoundaryEvents(forEachNode);
}
protected void readDataInputAssociation(org.w3c.dom.Node xmlNode, ForEachNode forEachNode) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
String inputVariable = subNode.getTextContent();
if (inputVariable != null && inputVariable.trim().length() > 0) {
forEachNode.setCollectionExpression(inputVariable);
}
}
@SuppressWarnings("unchecked")
protected void readMultiInstanceLoopCharacteristics(org.w3c.dom.Node xmlNode, ForEachNode forEachNode, ExtensibleXmlParser parser) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
while (subNode != null) {
String nodeName = subNode.getNodeName();
if ("inputDataItem".equals(nodeName)) {
String variableName = ((Element) subNode).getAttribute("id");
String itemSubjectRef = ((Element) subNode).getAttribute("itemSubjectRef");
DataType dataType = null;
Map<String, ItemDefinition> itemDefinitions = (Map<String, ItemDefinition>)
((ProcessBuildData) parser.getData()).getMetaData("ItemDefinitions");
if (itemDefinitions != null) {
ItemDefinition itemDefinition = itemDefinitions.get(itemSubjectRef);
if (itemDefinition != null) {
dataType = new ObjectDataType(itemDefinition.getStructureRef());
}
}
if (dataType == null) {
dataType = new ObjectDataType("java.lang.Object");
}
if (variableName != null && variableName.trim().length() > 0) {
forEachNode.setVariable(variableName, dataType);
}
}
subNode = subNode.getNextSibling();
}
}
public void writeNode(Node node, StringBuilder xmlDump, int metaDataType) {
throw new IllegalArgumentException("Writing out should be handled by specific handlers");
}
}