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org.jbpm.bpmn2.xml.IntermediateCatchEventHandler Maven / Gradle / Ivy
/*
* Copyright 2017 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.ArrayList;
import java.util.List;
import java.util.Map;
import org.drools.core.xml.ExtensibleXmlParser;
import org.jbpm.bpmn2.core.IntermediateLink;
import org.jbpm.bpmn2.core.Message;
import org.jbpm.bpmn2.core.Signal;
import org.jbpm.compiler.xml.ProcessBuildData;
import org.jbpm.process.core.event.EventFilter;
import org.jbpm.process.core.event.EventTransformerImpl;
import org.jbpm.process.core.event.EventTypeFilter;
import org.jbpm.process.core.impl.DataTransformerRegistry;
import org.jbpm.process.core.timer.Timer;
import org.jbpm.ruleflow.core.RuleFlowProcess;
import org.jbpm.workflow.core.Node;
import org.jbpm.workflow.core.NodeContainer;
import org.jbpm.workflow.core.node.CatchLinkNode;
import org.jbpm.workflow.core.node.CompositeNode;
import org.jbpm.workflow.core.node.EventNode;
import org.jbpm.workflow.core.node.StateNode;
import org.jbpm.workflow.core.node.TimerNode;
import org.jbpm.workflow.core.node.Transformation;
import org.kie.api.runtime.process.DataTransformer;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
public class IntermediateCatchEventHandler extends AbstractNodeHandler {
private DataTransformerRegistry transformerRegistry = DataTransformerRegistry.get();
public static final String LINK_NAME = "LinkName";
protected Node createNode(Attributes attrs) {
return new EventNode();
}
@SuppressWarnings("unchecked")
public Class generateNodeFor() {
return EventNode.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
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("signalEventDefinition".equals(nodeName)) {
// reuse already created EventNode
handleSignalNode(node, element, uri, localName, parser);
break;
} else if ("messageEventDefinition".equals(nodeName)) {
// reuse already created EventNode
handleMessageNode(node, element, uri, localName, parser);
break;
} else if ("timerEventDefinition".equals(nodeName)) {
// create new timerNode
TimerNode timerNode = new TimerNode();
timerNode.setId(node.getId());
timerNode.setName(node.getName());
timerNode.setMetaData("UniqueId",
node.getMetaData().get("UniqueId"));
node = timerNode;
handleTimerNode(node, element, uri, localName, parser);
break;
} else if ("conditionalEventDefinition".equals(nodeName)) {
// create new stateNode
StateNode stateNode = new StateNode();
stateNode.setId(node.getId());
stateNode.setName(node.getName());
stateNode.setMetaData("UniqueId",
node.getMetaData().get("UniqueId"));
node = stateNode;
handleStateNode(node, element, uri, localName, parser);
break;
} else if ("linkEventDefinition".equals(nodeName)) {
CatchLinkNode linkNode = new CatchLinkNode();
linkNode.setId(node.getId());
node = linkNode;
handleLinkNode(element, node, xmlNode, parser);
break;
}
xmlNode = xmlNode.getNextSibling();
}
NodeContainer nodeContainer = (NodeContainer) parser.getParent();
nodeContainer.addNode(node);
((ProcessBuildData) parser.getData()).addNode(node);
return node;
}
protected void handleLinkNode(Element element, Node node,
org.w3c.dom.Node xmlLinkNode, ExtensibleXmlParser parser) {
NodeContainer nodeContainer = (NodeContainer) parser.getParent();
node.setName(element.getAttribute("name"));
NamedNodeMap linkAttr = xmlLinkNode.getAttributes();
String name = linkAttr.getNamedItem("name").getNodeValue();
String id = element.getAttribute("id");
node.setMetaData("UniqueId", id);
node.setMetaData(LINK_NAME, name);
org.w3c.dom.Node xmlNode = xmlLinkNode.getFirstChild();
IntermediateLink aLink = new IntermediateLink();
aLink.setName(name);
aLink.setUniqueId(id);
while (null != xmlNode) {
String nodeName = xmlNode.getNodeName();
if ("target".equals(nodeName)) {
String target = xmlNode.getTextContent();
node.setMetaData("target", target);
aLink.setTarget(target);
}
if ("source".equals(nodeName)) {
String source = xmlNode.getTextContent();
node.setMetaData("source", source);
aLink.addSource(source);
}
xmlNode = xmlNode.getNextSibling();
}
if (nodeContainer instanceof RuleFlowProcess) {
RuleFlowProcess process = (RuleFlowProcess) nodeContainer;
List links = (List) process
.getMetaData().get(ProcessHandler.LINKS);
if (null == links) {
links = new ArrayList();
}
links.add(aLink);
process.setMetaData(ProcessHandler.LINKS, links);
} else if (nodeContainer instanceof CompositeNode) {
CompositeNode subprocess = (CompositeNode) nodeContainer;
List links = (List) subprocess
.getMetaData().get(ProcessHandler.LINKS);
if (null == links) {
links = new ArrayList();
}
links.add(aLink);
subprocess.setMetaData(ProcessHandler.LINKS, links);
}
}
@SuppressWarnings("unchecked")
protected void handleSignalNode(final Node node, final Element element,
final String uri, final String localName,
final ExtensibleXmlParser parser) throws SAXException {
super.handleNode(node, element, uri, localName, parser);
EventNode eventNode = (EventNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("dataOutput".equals(nodeName)) {
String id = ((Element) xmlNode).getAttribute("id");
String outputName = ((Element) xmlNode).getAttribute("name");
dataOutputs.put(id, outputName);
} else if ("dataOutputAssociation".equals(nodeName)) {
readDataOutputAssociation(xmlNode, eventNode);
} else if ("signalEventDefinition".equals(nodeName)) {
String type = ((Element) xmlNode).getAttribute("signalRef");
if (type != null && type.trim().length() > 0) {
type = checkSignalAndConvertToRealSignalNam(parser, type);
List eventFilters = new ArrayList();
EventTypeFilter eventFilter = new EventTypeFilter();
eventFilter.setType(type);
eventFilters.add(eventFilter);
eventNode.setEventFilters(eventFilters);
}
}
xmlNode = xmlNode.getNextSibling();
}
}
@SuppressWarnings("unchecked")
protected void handleMessageNode(final Node node, final Element element,
final String uri, final String localName,
final ExtensibleXmlParser parser) throws SAXException {
super.handleNode(node, element, uri, localName, parser);
EventNode eventNode = (EventNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("dataOutput".equals(nodeName)) {
String id = ((Element) xmlNode).getAttribute("id");
String outputName = ((Element) xmlNode).getAttribute("name");
dataOutputs.put(id, outputName);
} else if ("dataOutputAssociation".equals(nodeName)) {
readDataOutputAssociation(xmlNode, eventNode);
} else if ("messageEventDefinition".equals(nodeName)) {
String messageRef = ((Element) xmlNode)
.getAttribute("messageRef");
Map messages = (Map) ((ProcessBuildData) parser
.getData()).getMetaData("Messages");
if (messages == null) {
throw new IllegalArgumentException("No messages found");
}
Message message = messages.get(messageRef);
if (message == null) {
throw new IllegalArgumentException(
"Could not find message " + messageRef);
}
eventNode.setMetaData("MessageType", message.getType());
List eventFilters = new ArrayList();
EventTypeFilter eventFilter = new EventTypeFilter();
eventFilter.setType("Message-" + message.getName());
eventFilters.add(eventFilter);
eventNode.setEventFilters(eventFilters);
}
xmlNode = xmlNode.getNextSibling();
}
}
protected void handleTimerNode(final Node node, final Element element,
final String uri, final String localName,
final ExtensibleXmlParser parser) throws SAXException {
super.handleNode(node, element, uri, localName, parser);
TimerNode timerNode = (TimerNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("timerEventDefinition".equals(nodeName)) {
Timer timer = new Timer();
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
while (subNode instanceof Element) {
String subNodeName = subNode.getNodeName();
if ("timeCycle".equals(subNodeName)) {
String delay = subNode.getTextContent();
int index = delay.indexOf("###");
if (index != -1) {
String period = delay.substring(index + 3);
delay = delay.substring(0, index);
timer.setPeriod(period);
}
timer.setTimeType(Timer.TIME_CYCLE);
timer.setDelay(delay);
break;
} else if ("timeDuration".equals(subNodeName)) {
String delay = subNode.getTextContent();
timer.setTimeType(Timer.TIME_DURATION);
timer.setDelay(delay);
break;
} else if ("timeDate".equals(subNodeName)) {
String date = subNode.getTextContent();
timer.setTimeType(Timer.TIME_DATE);
timer.setDate(date);
break;
}
subNode = subNode.getNextSibling();
}
timerNode.setTimer(timer);
}
xmlNode = xmlNode.getNextSibling();
}
}
protected void handleStateNode(final Node node, final Element element,
final String uri, final String localName,
final ExtensibleXmlParser parser) throws SAXException {
super.handleNode(node, element, uri, localName, parser);
StateNode stateNode = (StateNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("conditionalEventDefinition".equals(nodeName)) {
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
while (subNode != null) {
String subnodeName = subNode.getNodeName();
if ("condition".equals(subnodeName)) {
stateNode.setMetaData("Condition",
xmlNode.getTextContent());
break;
}
subNode = subNode.getNextSibling();
}
}
xmlNode = xmlNode.getNextSibling();
}
}
protected void readDataOutputAssociation(org.w3c.dom.Node xmlNode,
EventNode eventNode) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
String from = subNode.getTextContent();
// targetRef
subNode = subNode.getNextSibling();
String to = subNode.getTextContent();
eventNode.setVariableName(to);
// 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, dataOutputs.get(from));
eventNode.setMetaData("Transformation", transformation);
eventNode.setEventTransformer(new EventTransformerImpl(transformation));
}
}
public void writeNode(Node node, StringBuilder xmlDump, int metaDataType) {
throw new IllegalArgumentException(
"Writing out should be handled by specific handlers");
}
}
