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org.jbpm.bpmn2.xml.EndEventHandler 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.Error;
import org.jbpm.bpmn2.core.Escalation;
import org.jbpm.bpmn2.core.Message;
import org.jbpm.bpmn2.core.Signal;
import org.jbpm.compiler.xml.ProcessBuildData;
import org.jbpm.workflow.core.DroolsAction;
import org.jbpm.workflow.core.Node;
import org.jbpm.workflow.core.NodeContainer;
import org.jbpm.workflow.core.impl.DroolsConsequenceAction;
import org.jbpm.workflow.core.node.EndNode;
import org.jbpm.workflow.core.node.FaultNode;
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 EndEventHandler extends AbstractNodeHandler {
protected Node createNode(Attributes attrs) {
EndNode node = new EndNode();
node.setTerminate(false);
return node;
}
@SuppressWarnings("unchecked")
public Class generateNodeFor() {
return EndNode.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
super.handleNode(node, element, uri, localName, parser);
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("terminateEventDefinition".equals(nodeName)) {
// reuse already created EndNode
handleTerminateNode(node, element, uri, localName, parser);
break;
} else if ("signalEventDefinition".equals(nodeName)) {
handleSignalNode(node, element, uri, localName, parser);
} else if ("messageEventDefinition".equals(nodeName)) {
handleMessageNode(node, element, uri, localName, parser);
} else if ("errorEventDefinition".equals(nodeName)) {
// create new faultNode
FaultNode faultNode = new FaultNode();
faultNode.setId(node.getId());
faultNode.setName(node.getName());
faultNode.setTerminateParent(true);
faultNode.setMetaData("UniqueId", node.getMetaData().get("UniqueId"));
node = faultNode;
super.handleNode(node, element, uri, localName, parser);
handleErrorNode(node, element, uri, localName, parser);
break;
} else if ("escalationEventDefinition".equals(nodeName)) {
// create new faultNode
FaultNode faultNode = new FaultNode();
faultNode.setId(node.getId());
faultNode.setName(node.getName());
faultNode.setMetaData("UniqueId", node.getMetaData().get("UniqueId"));
node = faultNode;
super.handleNode(node, element, uri, localName, parser);
handleEscalationNode(node, element, uri, localName, parser);
break;
} else if ("compensateEventDefinition".equals(nodeName)) {
// reuse already created ActionNode
handleThrowCompensationEventNode(node, element, uri, localName, parser);
break;
}
xmlNode = xmlNode.getNextSibling();
}
NodeContainer nodeContainer = (NodeContainer) parser.getParent();
nodeContainer.addNode(node);
((ProcessBuildData) parser.getData()).addNode(node);
return node;
}
public void handleTerminateNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
((EndNode) node).setTerminate(true);
EndNode endNode = (EndNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("terminateEventDefinition".equals(nodeName)) {
String scope = ((Element) xmlNode).getAttribute("scope");
if ("process".equalsIgnoreCase(scope)) {
endNode.setScope(EndNode.PROCESS_SCOPE);
} else {
endNode.setScope(EndNode.CONTAINER_SCOPE);
}
}
xmlNode = xmlNode.getNextSibling();
}
}
public void handleSignalNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
EndNode endNode = (EndNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("dataInput".equals(nodeName)) {
String id = ((Element) xmlNode).getAttribute("id");
String inputName = ((Element) xmlNode).getAttribute("name");
dataInputs.put(id, inputName);
} else if ("dataInputAssociation".equals(nodeName)) {
readEndDataInputAssociation(xmlNode, endNode);
} else if ("signalEventDefinition".equals(nodeName)) {
String signalName = ((Element) xmlNode).getAttribute("signalRef");
String variable = (String) endNode.getMetaData("MappingVariable");
signalName = checkSignalAndConvertToRealSignalNam(parser, signalName);
endNode.setMetaData("EventType", "signal");
endNode.setMetaData("Ref", signalName);
endNode.setMetaData("Variable", variable);
// check if signal should be send async
if (dataInputs.containsValue("async")) {
signalName = "ASYNC-" + signalName;
}
String signalExpression = getSignalExpression(endNode, signalName, variable);
List actions = new ArrayList();
actions.add(new DroolsConsequenceAction("mvel",signalExpression));
endNode.setActions(EndNode.EVENT_NODE_ENTER, actions);
}
xmlNode = xmlNode.getNextSibling();
}
}
@SuppressWarnings("unchecked")
public void handleMessageNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
EndNode endNode = (EndNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("dataInputAssociation".equals(nodeName)) {
readEndDataInputAssociation(xmlNode, endNode);
} 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);
}
String variable = (String) endNode.getMetaData("MappingVariable");
endNode.setMetaData("MessageType", message.getType());
List actions = new ArrayList();
actions.add(new DroolsConsequenceAction("java",
"org.drools.core.process.instance.impl.WorkItemImpl workItem = new org.drools.core.process.instance.impl.WorkItemImpl();" + EOL +
"workItem.setName(\"Send Task\");" + EOL +
"workItem.setNodeInstanceId(kcontext.getNodeInstance().getId());" + EOL +
"workItem.setProcessInstanceId(kcontext.getProcessInstance().getId());" + EOL +
"workItem.setNodeId(kcontext.getNodeInstance().getNodeId());" + EOL +
"workItem.setParameter(\"MessageType\", \"" + message.getType() + "\");" + EOL +
(variable == null ? "" : "workItem.setParameter(\"Message\", " + variable + ");" + EOL) +
"workItem.setDeploymentId((String) kcontext.getKnowledgeRuntime().getEnvironment().get(\"deploymentId\"));" + EOL +
"((org.drools.core.process.instance.WorkItemManager) kcontext.getKnowledgeRuntime().getWorkItemManager()).internalExecuteWorkItem(workItem);"));
endNode.setActions(EndNode.EVENT_NODE_ENTER, actions);
}
xmlNode = xmlNode.getNextSibling();
}
}
protected void readEndDataInputAssociation(org.w3c.dom.Node xmlNode, EndNode endNode) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
if ("sourceRef".equals(subNode.getNodeName())) {
String eventVariable = subNode.getTextContent();
if (eventVariable != null && eventVariable.trim().length() > 0) {
if (dataInputs.containsKey(eventVariable)) {
eventVariable = dataInputs.get(eventVariable);
}
endNode.setMetaData("MappingVariable", eventVariable);
}
} else {
// targetRef
// assignment
subNode = subNode.getNextSibling();
if (subNode != null) {
org.w3c.dom.Node subSubNode = subNode.getFirstChild();
NodeList nl = subSubNode.getChildNodes();
if (nl.getLength() > 1) {
endNode.setMetaData("MappingVariable", subSubNode.getTextContent());
return;
} else if (nl.getLength() == 0) {
return;
}
Object result = null;
Object from = nl.item(0);
if (from instanceof Text) {
String text = ((Text) from).getTextContent();
if (text.startsWith("\"") && text.endsWith("\"")) {
result = text.substring(1, text.length() -1);
} else {
result = text;
}
} else {
result = nl.item(0);
}
endNode.setMetaData("MappingVariable", "\"" + result + "\"");
}
}
}
@SuppressWarnings("unchecked")
public void handleErrorNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
FaultNode faultNode = (FaultNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("dataInputAssociation".equals(nodeName)) {
readFaultDataInputAssociation(xmlNode, faultNode);
} else if ("errorEventDefinition".equals(nodeName)) {
String errorRef = ((Element) xmlNode).getAttribute("errorRef");
if (errorRef != null && errorRef.trim().length() > 0) {
List errors = (List) ((ProcessBuildData) parser.getData()).getMetaData("Errors");
if (errors == null) {
throw new IllegalArgumentException("No errors found");
}
Error error = null;
for( Error listError: errors ) {
if( errorRef.equals(listError.getId()) ) {
error = listError;
break;
}
}
if (error == null) {
throw new IllegalArgumentException("Could not find error " + errorRef);
}
faultNode.setFaultName(error.getErrorCode());
faultNode.setTerminateParent(true);
}
}
xmlNode = xmlNode.getNextSibling();
}
}
@SuppressWarnings("unchecked")
public void handleEscalationNode(final Node node, final Element element, final String uri,
final String localName, final ExtensibleXmlParser parser) throws SAXException {
FaultNode faultNode = (FaultNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("dataInputAssociation".equals(nodeName)) {
readFaultDataInputAssociation(xmlNode, faultNode);
} else if ("escalationEventDefinition".equals(nodeName)) {
String escalationRef = ((Element) xmlNode).getAttribute("escalationRef");
if (escalationRef != null && escalationRef.trim().length() > 0) {
Map escalations = (Map)
((ProcessBuildData) parser.getData()).getMetaData(ProcessHandler.ESCALATIONS);
if (escalations == null) {
throw new IllegalArgumentException("No escalations found");
}
Escalation escalation = escalations.get(escalationRef);
if (escalation == null) {
throw new IllegalArgumentException("Could not find escalation " + escalationRef);
}
faultNode.setFaultName(escalation.getEscalationCode());
} else {
// BPMN2 spec, p. 83: end event's with
// are _required_ to reference a specific escalation(-code).
throw new IllegalArgumentException("End events throwing an escalation must throw *specific* escalations (and not general ones).");
}
}
xmlNode = xmlNode.getNextSibling();
}
}
protected void readFaultDataInputAssociation(org.w3c.dom.Node xmlNode, FaultNode faultNode) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
String faultVariable = subNode.getTextContent();
faultNode.setFaultVariable(faultVariable);
}
public void writeNode(Node node, StringBuilder xmlDump, int metaDataType) {
throw new IllegalArgumentException("Writing out should be handled by specific handlers");
}
}
