/**
* 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.ArrayList;
import java.util.List;
import org.drools.compiler.xml.XmlDumper;
import org.drools.definition.process.Connection;
import org.drools.workflow.core.Node;
import org.drools.workflow.core.node.CompositeNode;
import org.drools.workflow.core.node.ForEachNode;
import org.xml.sax.Attributes;
public class ForEachNodeHandler extends AbstractNodeHandler {
protected Node createNode(Attributes attrs) {
throw new IllegalArgumentException("Reading in should be handled by end event handler");
}
@SuppressWarnings("unchecked")
public Class generateNodeFor() {
return ForEachNode.class;
}
public void writeNode(Node node, StringBuilder xmlDump, boolean includeMeta) {
ForEachNode forEachNode = (ForEachNode) node;
writeNode("subProcess", forEachNode, xmlDump, includeMeta);
xmlDump.append(" >" + EOL);
// ioSpecification and dataInputAssociation
xmlDump.append(
" <ioSpecification>" + EOL +
" <dataInput id=\"" + XmlBPMNProcessDumper.getUniqueNodeId(forEachNode) + "_input\" name=\"MultiInstanceInput\" />" + EOL +
" <inputSet>" + EOL +
" <dataInputRefs>" + XmlBPMNProcessDumper.getUniqueNodeId(forEachNode) + "_input</dataInputRefs>" + EOL +
" </inputSet>" + EOL +
" <outputSet/>" + EOL +
" </ioSpecification>" + EOL);
String collectionExpression = forEachNode.getCollectionExpression();
if (collectionExpression != null) {
xmlDump.append(
" <dataInputAssociation>" + EOL +
" <sourceRef>" + XmlDumper.replaceIllegalChars(collectionExpression) + "</sourceRef>" + EOL +
" <targetRef>" + XmlBPMNProcessDumper.getUniqueNodeId(forEachNode) + "_input</targetRef>" + EOL +
" </dataInputAssociation>" + EOL);
}
// multiInstanceLoopCharacteristics
xmlDump.append(
" <multiInstanceLoopCharacteristics>" + EOL +
" <loopDataInputRef>" + XmlBPMNProcessDumper.getUniqueNodeId(forEachNode) + "_input</loopDataInputRef>" + EOL);
String parameterName = forEachNode.getVariableName();
if (parameterName != null) {
xmlDump.append(" <inputDataItem id=\"" + XmlDumper.replaceIllegalChars(parameterName) + "\" itemSubjectRef=\"" + XmlBPMNProcessDumper.getUniqueNodeId(forEachNode) + "_multiInstanceItemType\"/>" + EOL);
}
xmlDump.append(" </multiInstanceLoopCharacteristics>" + EOL);
// nodes
List<Node> subNodes = getSubNodes(forEachNode);
xmlDump.append(" <!-- nodes -->" + EOL);
for (Node subNode: subNodes) {
XmlBPMNProcessDumper.INSTANCE.visitNode(subNode, xmlDump, includeMeta);
}
// connections
List<Connection> connections = getSubConnections(forEachNode);
xmlDump.append(" <!-- connections -->" + EOL);
for (Connection connection: connections) {
XmlBPMNProcessDumper.INSTANCE.visitConnection(connection, xmlDump, includeMeta);
}
endNode("subProcess", xmlDump);
}
protected List<Node> getSubNodes(ForEachNode forEachNode) {
List<Node> subNodes =
new ArrayList<Node>();
for (org.drools.definition.process.Node subNode: forEachNode.getNodes()) {
// filter out composite start and end nodes as they can be regenerated
if ((!(subNode instanceof CompositeNode.CompositeNodeStart)) &&
(!(subNode instanceof CompositeNode.CompositeNodeEnd))) {
subNodes.add((Node) subNode);
}
}
return subNodes;
}
protected List<Connection> getSubConnections(ForEachNode forEachNode) {
List<Connection> connections = new ArrayList<Connection>();
for (org.drools.definition.process.Node subNode: forEachNode.getNodes()) {
// filter out composite start and end nodes as they can be regenerated
if (!(subNode instanceof CompositeNode.CompositeNodeEnd)) {
for (Connection connection: subNode.getIncomingConnections(Node.CONNECTION_DEFAULT_TYPE)) {
if (!(connection.getFrom() instanceof CompositeNode.CompositeNodeStart)) {
connections.add(connection);
}
}
}
}
return connections;
}
}