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org.jbpm.bpmn2.xml.SubProcessHandler Maven / Gradle / Ivy
/**
* Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* 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 org.drools.core.xml.ExtensibleXmlParser;
import org.jbpm.bpmn2.core.Association;
import org.jbpm.bpmn2.core.Definitions;
import org.jbpm.bpmn2.core.IntermediateLink;
import org.jbpm.bpmn2.core.SequenceFlow;
import org.jbpm.compiler.xml.ProcessBuildData;
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.impl.NodeImpl;
import org.jbpm.workflow.core.node.ActionNode;
import org.jbpm.workflow.core.node.CompositeContextNode;
import org.jbpm.workflow.core.node.EventSubProcessNode;
import org.jbpm.workflow.core.node.ForEachNode;
import org.jbpm.workflow.core.node.StartNode;
import org.kie.api.definition.process.Connection;
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 subProcessNode = new CompositeContextNode();
String eventSubprocessAttribute = attrs.getValue("triggeredByEvent");
if (eventSubprocessAttribute != null && Boolean.parseBoolean(eventSubprocessAttribute)) {
subProcessNode = new EventSubProcessNode();
}
VariableScope variableScope = new VariableScope();
subProcessNode.addContext(variableScope);
subProcessNode.setDefaultContext(variableScope);
String compensation = attrs.getValue("isForCompensation");
if( compensation != null ) {
boolean isForCompensation = Boolean.parseBoolean(compensation);
if( isForCompensation ) {
subProcessNode.setMetaData("isForCompensation", isForCompensation );
}
}
return subProcessNode;
}
@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)) {
Boolean isAsync = Boolean.parseBoolean((String)node.getMetaData().get("customAsync"));
// create new timerNode
ForEachNode forEachNode = new ForEachNode();
forEachNode.setId(node.getId());
forEachNode.setName(node.getName());
for (org.kie.api.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, isAsync);
found = true;
break;
}
xmlNode = xmlNode.getNextSibling();
}
if (!found) {
handleCompositeContextNode(node, element, uri, localName, parser);
}
NodeContainer nodeContainer = (NodeContainer) parser.getParent();
nodeContainer.addNode(node);
((ProcessBuildData) parser.getData()).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 connections = (List)
compositeNode.getMetaData(ProcessHandler.CONNECTIONS);
handleScript(compositeNode, element, "onEntry");
handleScript(compositeNode, element, "onExit");
List throwLinks = (List) compositeNode.getMetaData(ProcessHandler.LINKS);
ProcessHandler.linkIntermediateLinks(compositeNode, throwLinks);
ProcessHandler.linkConnections(compositeNode, connections);
ProcessHandler.linkBoundaryEvents(compositeNode);
// This must be done *after* linkConnections(process, connections)
// because it adds hidden connections for compensations
List associations = (List) compositeNode.getMetaData(ProcessHandler.ASSOCIATIONS);
ProcessHandler.linkAssociations((Definitions) compositeNode.getMetaData("Definitions"), compositeNode, associations);
// TODO: do we fully support interruping ESP's?
/**
for( org.kie.api.definition.process.Node subNode : compositeNode.getNodes() ) {
if( subNode instanceof StartNode ) {
if( ! ((StartNode) subNode).isInterrupting() ) {
throw new IllegalArgumentException("Non-interrupting event subprocesses are not yet fully supported." );
}
}
}
*/
}
@SuppressWarnings("unchecked")
protected void handleForEachNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser, boolean isAsync) 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 ("ioSpecification".equals(nodeName)) {
readIoSpecification(xmlNode, dataInputs, dataOutputs);
} else if ("dataInputAssociation".equals(nodeName)) {
readDataInputAssociation(xmlNode, inputAssociation);
} else if ("dataOutputAssociation".equals(nodeName)) {
readDataOutputAssociation(xmlNode, outputAssociation);
} else if ("multiInstanceLoopCharacteristics".equals(nodeName)) {
readMultiInstanceLoopCharacteristics(xmlNode, forEachNode, parser);
}
xmlNode = xmlNode.getNextSibling();
}
handleScript(forEachNode, element, "onEntry");
handleScript(forEachNode, element, "onExit");
List connections = (List)
forEachNode.getMetaData(ProcessHandler.CONNECTIONS);
ProcessHandler.linkConnections(forEachNode, connections);
ProcessHandler.linkBoundaryEvents(forEachNode);
// This must be done *after* linkConnections(process, connections)
// because it adds hidden connections for compensations
List associations = (List) forEachNode.getMetaData(ProcessHandler.ASSOCIATIONS);
ProcessHandler.linkAssociations((Definitions) forEachNode.getMetaData("Definitions"), forEachNode, associations);
applyAsync(node, isAsync);
}
protected void applyAsync(Node node, boolean isAsync) {
for (org.kie.api.definition.process.Node subNode: ((CompositeContextNode) node).getNodes()) {
if (isAsync) {
List incoming = subNode.getIncomingConnections(NodeImpl.CONNECTION_DEFAULT_TYPE);
if (incoming != null) {
for (Connection con : incoming) {
if (con.getFrom() instanceof StartNode) {
((Node)subNode).setMetaData("customAsync", Boolean.toString(isAsync));
return;
}
}
}
}
}
}
public void writeNode(Node node, StringBuilder xmlDump, int metaDataType) {
throw new IllegalArgumentException("Writing out should be handled by specific handlers");
}
}
