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org.jbpm.bpmn2.xml.CallActivityHandler 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.HashMap;
import java.util.Map;
import org.drools.compiler.compiler.xml.XmlDumper;
import org.drools.core.xml.ExtensibleXmlParser;
import org.jbpm.compiler.xml.ProcessBuildData;
import org.jbpm.process.core.impl.DataTransformerRegistry;
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.ForEachNode;
import org.jbpm.workflow.core.node.SubProcessNode;
import org.jbpm.workflow.core.node.Transformation;
import org.jbpm.workflow.core.node.WorkItemNode;
import org.kie.api.runtime.process.DataTransformer;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
public class CallActivityHandler extends AbstractNodeHandler {
private DataTransformerRegistry transformerRegistry = DataTransformerRegistry.get();
protected Node createNode(Attributes attrs) {
return new SubProcessNode();
}
@SuppressWarnings("unchecked")
public Class generateNodeFor() {
return SubProcessNode.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);
SubProcessNode subProcessNode = (SubProcessNode) node;
String processId = element.getAttribute("calledElement");
if (processId != null && processId.length() > 0) {
subProcessNode.setProcessId(processId);
} else {
String processName = element.getAttribute("calledElementByName");
subProcessNode.setProcessName(processName);
}
String waitForCompletion = element.getAttribute("waitForCompletion");
if (waitForCompletion != null && "false".equals(waitForCompletion)) {
subProcessNode.setWaitForCompletion(false);
}
String independent = element.getAttribute("independent");
if (independent != null && "false".equals(independent)) {
subProcessNode.setIndependent(false);
}
Map dataInputs = new HashMap();
Map dataOutputs = new HashMap();
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, subProcessNode, dataInputs);
} else if ("dataOutputAssociation".equals(nodeName)) {
readDataOutputAssociation(xmlNode, subProcessNode, dataOutputs);
}
xmlNode = xmlNode.getNextSibling();
}
subProcessNode.setMetaData("DataInputs", dataInputs);
subProcessNode.setMetaData("DataOutputs", dataOutputs);
handleScript(subProcessNode, element, "onEntry");
handleScript(subProcessNode, element, "onExit");
}
@SuppressWarnings("unchecked")
@Override
public Object end(String uri, String localName, ExtensibleXmlParser parser) throws SAXException {
final Element element = parser.endElementBuilder();
Node node = (Node) parser.getCurrent();
handleNode(node, element, uri, localName, parser);
org.w3c.dom.Node xmlNode = element.getFirstChild();
int uniqueIdGen = 1;
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("multiInstanceLoopCharacteristics".equals(nodeName)) {
// create new timerNode
ForEachNode forEachNode = new ForEachNode();
forEachNode.setId(node.getId());
String uniqueId = (String) node.getMetaData().get("UniqueId");
forEachNode.setMetaData("UniqueId", uniqueId);
node.setMetaData("UniqueId", uniqueId + ":" + uniqueIdGen++);
node.setMetaData("hidden", true);
forEachNode.addNode(node);
forEachNode.linkIncomingConnections(NodeImpl.CONNECTION_DEFAULT_TYPE, node.getId(), NodeImpl.CONNECTION_DEFAULT_TYPE);
forEachNode.linkOutgoingConnections(node.getId(), NodeImpl.CONNECTION_DEFAULT_TYPE, NodeImpl.CONNECTION_DEFAULT_TYPE);
Node orignalNode = node;
node = forEachNode;
handleForEachNode(node, element, uri, localName, parser);
// remove output collection data output of for each to avoid problems when running in variable strict mode
if (orignalNode instanceof SubProcessNode) {
((SubProcessNode)orignalNode).adjustOutMapping(forEachNode.getOutputCollectionExpression());
}
Map dataInputs = (Map) orignalNode.getMetaData().remove("DataInputs");
Map dataOutputs = (Map) orignalNode.getMetaData().remove("DataOutputs");
orignalNode.setMetaData("MICollectionOutput", dataOutputs.get(((ForEachNode)node).getMetaData("MICollectionOutput")));
orignalNode.setMetaData("MICollectionInput", dataInputs.get(((ForEachNode)node).getMetaData("MICollectionInput")));
break;
}
xmlNode = xmlNode.getNextSibling();
}
NodeContainer nodeContainer = (NodeContainer) parser.getParent();
nodeContainer.addNode(node);
((ProcessBuildData) parser.getData()).addNode(node);
return node;
}
protected void readIoSpecification(org.w3c.dom.Node xmlNode, Map dataInputs, Map 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);
} else 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, SubProcessNode subProcessNode, Map dataInputs) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
if ("sourceRef".equals(subNode.getNodeName())) {
String from = subNode.getTextContent();
// targetRef
subNode = subNode.getNextSibling();
String to = subNode.getTextContent();
// transformation
Transformation transformation = null;
subNode = subNode.getNextSibling();
if (subNode != null && "transformation".equals(subNode.getNodeName())) {
String lang = subNode.getAttributes().getNamedItem("language").getNodeValue();
String expression = subNode.getTextContent();
DataTransformer transformer = transformerRegistry.find(lang);
if (transformer == null) {
throw new IllegalArgumentException("No transformer registered for language " + lang);
}
transformation = new Transformation(lang, expression);
subNode = subNode.getNextSibling();
}
subProcessNode.addInMapping(dataInputs.get(to), from, transformation);
} else {
// targetRef
String to = subNode.getTextContent();
// assignment
subNode = subNode.getNextSibling();
if (subNode != null) {
org.w3c.dom.Node subSubNode = subNode.getFirstChild();
NodeList nl = subSubNode.getChildNodes();
if (nl.getLength() > 1) {
// not supported ?
subProcessNode.addInMapping(dataInputs.get(to), subSubNode.getTextContent());
return;
} else if (nl.getLength() == 0) {
return;
}
Object result = null;
Object from = nl.item(0);
if (from instanceof Text) {
result = ((Text) from).getTextContent();
} else {
result = nl.item(0);
}
subProcessNode.addInMapping(dataInputs.get(to), result.toString());
}
}
}
protected void readDataOutputAssociation(org.w3c.dom.Node xmlNode, SubProcessNode subProcessNode, Map dataOutputs) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
String from = subNode.getTextContent();
// targetRef
subNode = subNode.getNextSibling();
String to = subNode.getTextContent();
// transformation
Transformation transformation = null;
subNode = subNode.getNextSibling();
if (subNode != null && "transformation".equals(subNode.getNodeName())) {
String lang = subNode.getAttributes().getNamedItem("language").getNodeValue();
String expression = subNode.getTextContent();
DataTransformer transformer = transformerRegistry.find(lang);
if (transformer == null) {
throw new IllegalArgumentException("No transformer registered for language " + lang);
}
transformation = new Transformation(lang, expression, from);
subNode = subNode.getNextSibling();
}
subProcessNode.addOutMapping(dataOutputs.get(from), to, transformation);
}
protected void handleForEachNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
ForEachNode forEachNode = (ForEachNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
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();
}
}
public void writeNode(Node node, StringBuilder xmlDump, int metaDataType) {
SubProcessNode subProcessNode = (SubProcessNode) node;
writeNode("callActivity", subProcessNode, xmlDump, metaDataType);
if (subProcessNode.getProcessId() != null) {
xmlDump.append("calledElement=\"" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(subProcessNode.getProcessId()) + "\" ");
}
if (!subProcessNode.isWaitForCompletion()) {
xmlDump.append("tns:waitForCompletion=\"false\" ");
}
if (!subProcessNode.isIndependent()) {
xmlDump.append("tns:independent=\"false\" ");
}
xmlDump.append(">" + EOL);
writeExtensionElements(subProcessNode, xmlDump);
writeIO(subProcessNode, xmlDump);
endNode("callActivity", xmlDump);
}
protected void writeIO(SubProcessNode subProcessNode, StringBuilder xmlDump) {
xmlDump.append(" " + EOL);
for (Map.Entry entry: subProcessNode.getInMappings().entrySet()) {
xmlDump.append(" entry: subProcessNode.getOutMappings().entrySet()) {
xmlDump.append(" " + EOL);
for (Map.Entry entry: subProcessNode.getInMappings().entrySet()) {
xmlDump.append(" " + XmlBPMNProcessDumper.getUniqueNodeId(subProcessNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input " + EOL);
}
xmlDump.append(" " + EOL);
xmlDump.append(" " + EOL);
for (Map.Entry entry: subProcessNode.getOutMappings().entrySet()) {
xmlDump.append(" " + XmlBPMNProcessDumper.getUniqueNodeId(subProcessNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Output " + EOL);
}
xmlDump.append(" " + EOL);
xmlDump.append(" " + EOL);
for (Map.Entry entry: subProcessNode.getInMappings().entrySet()) {
xmlDump.append(" " + EOL);
xmlDump.append(
" " + XmlDumper.replaceIllegalChars(entry.getValue()) + " " + EOL +
" " + XmlBPMNProcessDumper.getUniqueNodeId(subProcessNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input " + EOL);
xmlDump.append(" " + EOL);
}
for (Map.Entry entry: subProcessNode.getOutMappings().entrySet()) {
xmlDump.append(" " + EOL);
xmlDump.append(
" " + XmlBPMNProcessDumper.getUniqueNodeId(subProcessNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Output " + EOL +
" " + entry.getValue() + " " + EOL);
xmlDump.append(" " + EOL);
}
}
}
