org.jbpm.bpmn2.xml.IntermediateThrowEventHandler Maven / Gradle / Ivy
/*
* Copyright 2021 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.jbpm.bpmn2.core.Escalation;
import org.jbpm.bpmn2.core.IntermediateLink;
import org.jbpm.bpmn2.core.Message;
import org.jbpm.compiler.xml.Parser;
import org.jbpm.compiler.xml.ProcessBuildData;
import org.jbpm.process.core.context.variable.Variable;
import org.jbpm.process.instance.impl.actions.HandleEscalationAction;
import org.jbpm.process.instance.impl.actions.HandleMessageAction;
import org.jbpm.process.instance.impl.actions.SignalProcessInstanceAction;
import org.jbpm.ruleflow.core.Metadata;
import org.jbpm.ruleflow.core.RuleFlowProcess;
import org.jbpm.workflow.core.Node;
import org.jbpm.workflow.core.NodeContainer;
import org.jbpm.workflow.core.impl.DataAssociation;
import org.jbpm.workflow.core.impl.DroolsConsequenceAction;
import org.jbpm.workflow.core.impl.IOSpecification;
import org.jbpm.workflow.core.node.ActionNode;
import org.jbpm.workflow.core.node.CompositeNode;
import org.jbpm.workflow.core.node.ThrowLinkNode;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import static org.jbpm.bpmn2.xml.ProcessHandler.createJavaAction;
import static org.jbpm.ruleflow.core.Metadata.EVENT_TYPE;
import static org.jbpm.ruleflow.core.Metadata.EVENT_TYPE_MESSAGE;
import static org.jbpm.ruleflow.core.Metadata.MAPPING_VARIABLE;
import static org.jbpm.ruleflow.core.Metadata.MAPPING_VARIABLE_INPUT;
import static org.jbpm.ruleflow.core.Metadata.MESSAGE_TYPE;
import static org.jbpm.ruleflow.core.Metadata.PRODUCE_MESSAGE;
import static org.jbpm.ruleflow.core.Metadata.SIGNAL_TYPE;
import static org.jbpm.ruleflow.core.Metadata.TRIGGER_REF;
import static org.jbpm.ruleflow.core.Metadata.TRIGGER_TYPE;
public class IntermediateThrowEventHandler extends AbstractNodeHandler {
public static final String LINK_NAME = "linkName";
public static final String LINK_SOURCE = "source";
public static final String LINK_TARGET = "target";
@Override
protected Node createNode(Attributes attrs) {
return new ActionNode();
}
@Override
public Class generateNodeFor() {
return Node.class;
}
@Override
protected Node handleNode(Node newNode, Element element, String uri, String localName, Parser parser) throws SAXException {
Node node = newNode;
IOSpecification ioSpecification = readThrowSpecification(parser, element);
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("signalEventDefinition".equals(nodeName)) {
// reuse already created ActionNode
setThrowVariable(ioSpecification, node);
handleSignalNode(node, element, uri, localName, parser);
break;
} else if ("messageEventDefinition".equals(nodeName)) {
// reuse already created ActionNode
setThrowVariable(ioSpecification, node);
handleMessageNode(node, element, uri, localName, parser);
break;
} else if ("escalationEventDefinition".equals(nodeName)) {
// reuse already created ActionNode
setThrowVariable(ioSpecification, node);
handleEscalationNode(node, element, uri, localName, parser);
break;
} else if ("compensateEventDefinition".equals(nodeName)) {
// reuse already created ActionNode
setThrowVariable(ioSpecification, node);
handleThrowCompensationEventNode(node, element, uri, localName, parser);
break;
} else if ("linkEventDefinition".equals(nodeName)) {
ThrowLinkNode linkNode = new ThrowLinkNode();
linkNode.setId(node.getId());
node = linkNode;
setThrowVariable(ioSpecification, node);
handleLinkNode(element, node, xmlNode, parser);
}
xmlNode = xmlNode.getNextSibling();
}
if (node instanceof ActionNode) {
ActionNode actionNode = (ActionNode) node;
if (actionNode.getAction() == null) {
actionNode.setAction(new DroolsConsequenceAction("java", ""));
actionNode.setMetaData("NodeType", "IntermediateThrowEvent-None");
}
}
return node;
}
protected void handleLinkNode(Element element, Node node,
org.w3c.dom.Node xmlLinkNode, Parser parser) {
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();
NodeContainer nodeContainer = (NodeContainer) parser.getParent();
IntermediateLink aLink = new IntermediateLink();
aLink.setName(name);
aLink.setUniqueId(id);
while (null != xmlNode) {
String nodeName = xmlNode.getNodeName();
if (LINK_TARGET.equals(nodeName)) {
String target = xmlNode.getTextContent();
node.setMetaData(LINK_TARGET, target);
}
if (LINK_SOURCE.equals(nodeName)) {
String source = xmlNode.getTextContent();
ArrayList sources = (ArrayList) node
.getMetaData().get(LINK_SOURCE);
// if there is no list, create one
if (null == sources) {
sources = new ArrayList<>();
}
// to connect nodes.
aLink.addSource(source);
// to do the xml dump
sources.add(source);
node.setMetaData(LINK_SOURCE, sources);
}
xmlNode = xmlNode.getNextSibling();
}
aLink.configureThrow();
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);
}
}
public void handleSignalNode(final Node node, final Element element,
final String uri, final String localName,
final Parser parser) throws SAXException {
ActionNode actionNode = (ActionNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("signalEventDefinition".equals(nodeName)) {
String signalName = ((Element) xmlNode).getAttribute("signalRef");
String variable = findVariable((String) actionNode.getMetaData(MAPPING_VARIABLE), parser);
String inputVariable = findVariable((String) actionNode.getMetaData(MAPPING_VARIABLE_INPUT), parser);
signalName = checkSignalAndConvertToRealSignalNam(parser, signalName);
actionNode.setMetaData(EVENT_TYPE, "signal");
actionNode.setMetaData(Metadata.REF, signalName);
actionNode.setMetaData(Metadata.VARIABLE, variable);
List inputs = actionNode.getIoSpecification().getDataInputAssociation();
if (!inputs.isEmpty()) {
String type = inputs.get(0).getTarget().getType();
actionNode.setMetaData(SIGNAL_TYPE, type);
}
// check if signal should be send async
if (actionNode.getIoSpecification().containsInputLabel("async")) {
signalName = "ASYNC-" + signalName;
}
DroolsConsequenceAction action = createJavaAction(
new SignalProcessInstanceAction(signalName,
variable,
inputVariable,
(String) actionNode.getMetaData("customScope")));
actionNode.setAction(action);
}
xmlNode = xmlNode.getNextSibling();
}
}
@SuppressWarnings("unchecked")
public void handleMessageNode(final Node node, final Element element,
final String uri, final String localName,
final Parser parser) throws SAXException {
ActionNode actionNode = (ActionNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
if ("messageEventDefinition".equals(nodeName)) {
String messageRef = ((Element) xmlNode)
.getAttribute("messageRef");
Map messages = (Map) ((ProcessBuildData) parser
.getData()).getMetaData("Messages");
if (messages == null) {
throw new ProcessParsingValidationException("No messages found");
}
Message message = messages.get(messageRef);
if (message == null) {
throw new ProcessParsingValidationException(
"Could not find message " + messageRef);
}
String variable = (String) actionNode.getMetaData(MAPPING_VARIABLE);
Variable v = (Variable) ((ProcessBuildData) parser.getData()).getMetaData("Variable");
if (v != null) {
variable = (String) v.getMetaData(variable);
}
actionNode.setMetaData(EVENT_TYPE, EVENT_TYPE_MESSAGE);
actionNode.setMetaData(MESSAGE_TYPE, message.getType());
actionNode.setMetaData(TRIGGER_TYPE, PRODUCE_MESSAGE);
actionNode.setMetaData(TRIGGER_REF, message.getName());
DroolsConsequenceAction action = createJavaAction(new HandleMessageAction(message.getType(), variable));
actionNode.setAction(action);
}
xmlNode = xmlNode.getNextSibling();
}
}
@SuppressWarnings("unchecked")
public void handleEscalationNode(final Node node, final Element element,
final String uri, final String localName,
final Parser parser) throws SAXException {
ActionNode actionNode = (ActionNode) node;
org.w3c.dom.Node xmlNode = element.getFirstChild();
while (xmlNode != null) {
String nodeName = xmlNode.getNodeName();
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 ProcessParsingValidationException(
"No escalations found");
}
Escalation escalation = escalations.get(escalationRef);
if (escalation == null) {
throw new ProcessParsingValidationException(
"Could not find escalation " + escalationRef);
}
String faultName = escalation.getEscalationCode();
String variable = (String) actionNode.getMetaData(MAPPING_VARIABLE);
DroolsConsequenceAction action = createJavaAction(new HandleEscalationAction(faultName, variable));
actionNode.setAction(action);
} else {
throw new ProcessParsingValidationException("General escalation is not yet supported");
}
}
xmlNode = xmlNode.getNextSibling();
}
}
@Override
public void writeNode(Node node, StringBuilder xmlDump, int metaDataType) {
throw new IllegalArgumentException("Writing out should be handled by action node handler");
}
}
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