/**
* 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.LinkedList;
import java.util.List;
import java.util.Map;
import org.drools.compiler.compiler.xml.XmlDumper;
import org.drools.core.xml.ExtensibleXmlParser;
import org.jbpm.process.core.impl.DataTransformerRegistry;
import org.jbpm.workflow.core.Node;
import org.jbpm.workflow.core.node.Assignment;
import org.jbpm.workflow.core.node.DataAssociation;
import org.jbpm.workflow.core.node.RuleSetNode;
import org.jbpm.workflow.core.node.Transformation;
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 BusinessRuleTaskHandler extends AbstractNodeHandler {
private static final String NAMESPACE_PROP = "namespace";
private static final String MODEL_PROP = "model";
private static final String DECISION_PROP = "decision";
private DataTransformerRegistry transformerRegistry = DataTransformerRegistry.get();
protected Node createNode(Attributes attrs) {
return new RuleSetNode();
}
@SuppressWarnings("unchecked")
public Class generateNodeFor() {
return RuleSetNode.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);
RuleSetNode ruleSetNode = (RuleSetNode) node;
String ruleFlowGroup = element.getAttribute("ruleFlowGroup");
if (ruleFlowGroup != null) {
ruleSetNode.setRuleFlowGroup(ruleFlowGroup);
}
String language = element.getAttribute("implementation");
if (language == null || language.equalsIgnoreCase("##unspecified") || language.isEmpty()) {
language = RuleSetNode.DRL_LANG;
}
ruleSetNode.setLanguage(language);
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, ruleSetNode, dataInputs);
} else if ("dataOutputAssociation".equals(nodeName)) {
readDataOutputAssociation(xmlNode, ruleSetNode, dataOutputs);
}
xmlNode = xmlNode.getNextSibling();
}
ruleSetNode.setNamespace((String) ruleSetNode.removeParameter(NAMESPACE_PROP));
ruleSetNode.setModel((String) ruleSetNode.removeParameter(MODEL_PROP));
ruleSetNode.setDecision((String) ruleSetNode.removeParameter(DECISION_PROP));
handleScript(ruleSetNode, element, "onEntry");
handleScript(ruleSetNode, element, "onExit");
}
public void writeNode(Node node, StringBuilder xmlDump, int metaDataType) {
RuleSetNode ruleSetNode = (RuleSetNode) node;
writeNode("businessRuleTask", ruleSetNode, xmlDump, metaDataType);
if (ruleSetNode.getRuleFlowGroup() != null) {
xmlDump.append("g:ruleFlowGroup=\"" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(ruleSetNode.getRuleFlowGroup()) + "\" " + EOL);
}
xmlDump.append(" implementation=\"" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(ruleSetNode.getLanguage()) + "\" >" + EOL);
writeExtensionElements(ruleSetNode, xmlDump);
writeIO(ruleSetNode, xmlDump);
endNode("businessRuleTask", xmlDump);
}
protected void readDataInputAssociation(org.w3c.dom.Node xmlNode, RuleSetNode ruleSetNode, Map<String, String> dataInputs) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
if ("sourceRef".equals(subNode.getNodeName())) {
String source = subNode.getTextContent();
// targetRef
subNode = subNode.getNextSibling();
String target = 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();
}
// assignments
List<Assignment> assignments = new LinkedList<Assignment>();
while(subNode != null){
org.w3c.dom.Node ssubNode = subNode.getFirstChild();
String from = ssubNode.getTextContent();
String to = ssubNode.getNextSibling().getTextContent();
assignments.add(new Assignment("XPath", from, to));
subNode = subNode.getNextSibling();
}
ruleSetNode.addInAssociation(new DataAssociation(
source,
dataInputs.get(target), assignments, 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 ?
ruleSetNode.setParameter(dataInputs.get(to), 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);
}
ruleSetNode.setParameter(dataInputs.get(to), result);
}
}
}
protected void readDataOutputAssociation(org.w3c.dom.Node xmlNode, RuleSetNode ruleSetNode, Map<String, String> dataOutputs) {
// sourceRef
org.w3c.dom.Node subNode = xmlNode.getFirstChild();
String source = subNode.getTextContent();
// targetRef
subNode = subNode.getNextSibling();
String target = 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, source);
subNode = subNode.getNextSibling();
}
// assignments
List<Assignment> assignments = new LinkedList<Assignment>();
while(subNode != null){
org.w3c.dom.Node ssubNode = subNode.getFirstChild();
String from = ssubNode.getTextContent();
String to = ssubNode.getNextSibling().getTextContent();
assignments.add(new Assignment("XPath", from, to));
subNode = subNode.getNextSibling();
}
ruleSetNode.addOutAssociation(new DataAssociation(dataOutputs.get(source), target, assignments, transformation));
}
protected void writeIO(RuleSetNode ruleSetNode, StringBuilder xmlDump) {
xmlDump.append(" <ioSpecification>" + EOL);
for (Map.Entry<String, String> entry: ruleSetNode.getInMappings().entrySet()) {
xmlDump.append(" <dataInput id=\"" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(entry.getKey()) + "Input\" name=\"" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(entry.getKey()) + "\" />" + EOL);
}
for (Map.Entry<String, Object> entry: ruleSetNode.getParameters().entrySet()) {
if (!"ActorId".equals(entry.getKey()) && entry.getValue() != null) {
xmlDump.append(" <dataInput id=\"" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(entry.getKey()) + "Input\" name=\"" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(entry.getKey()) + "\" />" + EOL);
}
}
for (Map.Entry<String, String> entry: ruleSetNode.getOutMappings().entrySet()) {
xmlDump.append(" <dataOutput id=\"" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(entry.getKey()) + "Output\" name=\"" + XmlBPMNProcessDumper.replaceIllegalCharsAttribute(entry.getKey()) + "\" />" + EOL);
}
xmlDump.append(" <inputSet>" + EOL);
for (Map.Entry<String, String> entry: ruleSetNode.getInMappings().entrySet()) {
xmlDump.append(" <dataInputRefs>" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input</dataInputRefs>" + EOL);
}
for (Map.Entry<String, Object> entry: ruleSetNode.getParameters().entrySet()) {
if (!"ActorId".equals(entry.getKey()) && entry.getValue() != null) {
xmlDump.append(" <dataInputRefs>" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input</dataInputRefs>" + EOL);
}
}
xmlDump.append(
" </inputSet>" + EOL);
xmlDump.append(" <outputSet>" + EOL);
for (Map.Entry<String, String> entry: ruleSetNode.getOutMappings().entrySet()) {
xmlDump.append(" <dataOutputRefs>" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Output</dataOutputRefs>" + EOL);
}
xmlDump.append(
" </outputSet>" + EOL);
xmlDump.append(
" </ioSpecification>" + EOL);
for (Map.Entry<String, String> entry: ruleSetNode.getInMappings().entrySet()) {
xmlDump.append(" <dataInputAssociation>" + EOL);
xmlDump.append(
" <sourceRef>" + XmlDumper.replaceIllegalChars(entry.getValue()) + "</sourceRef>" + EOL +
" <targetRef>" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input</targetRef>" + EOL);
xmlDump.append(" </dataInputAssociation>" + EOL);
}
for (Map.Entry<String, Object> entry: ruleSetNode.getParameters().entrySet()) {
if (!"ActorId".equals(entry.getKey()) && entry.getValue() != null) {
xmlDump.append(" <dataInputAssociation>" + EOL);
xmlDump.append(
" <targetRef>" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input</targetRef>" + EOL +
" <assignment>" + EOL +
" <from xsi:type=\"tFormalExpression\">" + XmlDumper.replaceIllegalChars(entry.getValue().toString()) + "</from>" + EOL +
" <to xsi:type=\"tFormalExpression\">" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input</to>" + EOL +
" </assignment>" + EOL);
xmlDump.append(" </dataInputAssociation>" + EOL);
}
}
for (Map.Entry<String, String> entry: ruleSetNode.getOutMappings().entrySet()) {
xmlDump.append(" <dataOutputAssociation>" + EOL);
xmlDump.append(
" <sourceRef>" + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Output</sourceRef>" + EOL +
" <targetRef>" + XmlDumper.replaceIllegalChars(entry.getValue()) + "</targetRef>" + EOL);
xmlDump.append(" </dataOutputAssociation>" + EOL);
}
}
}