/**
* 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.process.core.context.variable.Variable;
import org.drools.process.core.context.variable.VariableScope;
import org.drools.workflow.core.Node;
import org.drools.workflow.core.node.CompositeContextNode;
import org.drools.workflow.core.node.CompositeNode;
import org.xml.sax.Attributes;
public class CompositeContextNodeHandler 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 CompositeContextNode.class;
}
public void writeNode(Node node, StringBuilder xmlDump, boolean includeMeta) {
CompositeContextNode compositeNode = (CompositeContextNode) node;
String nodeType = "subProcess";
if (node.getMetaData().get("Transaction") != null) {
nodeType = "transaction";
}
writeNode(nodeType, compositeNode, xmlDump, includeMeta);
xmlDump.append(" >" + EOL);
// variables
VariableScope variableScope = (VariableScope)
compositeNode.getDefaultContext(VariableScope.VARIABLE_SCOPE);
if (variableScope != null && !variableScope.getVariables().isEmpty()) {
xmlDump.append(" <!-- variables -->" + EOL);
for (Variable variable: variableScope.getVariables()) {
xmlDump.append(" <property id=\"" + XmlDumper.replaceIllegalChars(variable.getName()) + "\" ");
if (variable.getType() != null) {
xmlDump.append("itemSubjectRef=\"" + XmlBPMNProcessDumper.getUniqueNodeId(compositeNode) + "-" + XmlDumper.replaceIllegalChars(variable.getName()) + "Item\"" );
}
// TODO: value
xmlDump.append("/>" + EOL);
}
}
// nodes
List<Node> subNodes = getSubNodes(compositeNode);
xmlDump.append(" <!-- nodes -->" + EOL);
for (Node subNode: subNodes) {
XmlBPMNProcessDumper.INSTANCE.visitNode(subNode, xmlDump, includeMeta);
}
// connections
List<Connection> connections = getSubConnections(compositeNode);
xmlDump.append(" <!-- connections -->" + EOL);
for (Connection connection: connections) {
XmlBPMNProcessDumper.INSTANCE.visitConnection(connection, xmlDump, includeMeta);
}
endNode(nodeType, xmlDump);
}
protected List<Node> getSubNodes(CompositeNode compositeNode) {
List<Node> subNodes =
new ArrayList<Node>();
for (org.drools.definition.process.Node subNode: compositeNode.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(CompositeNode compositeNode) {
List<Connection> connections = new ArrayList<Connection>();
for (org.drools.definition.process.Node subNode: compositeNode.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;
}
}