org.jbpm.bpmn2.xml.BusinessRuleTaskHandler Maven / Gradle / Ivy

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jBPM BPMN2
There is a newer version: 7.74.1.Final
/**
 * Copyright 2010 JBoss Inc
 *
 * 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.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.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 {
    
    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);
		}
		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();
        }
		
        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);
		}
		writeExtensionElements(ruleSetNode, xmlDump);
		writeIO(ruleSetNode, xmlDump);
		endNode("businessRuleTask", xmlDump);
	}
	
	protected void readDataInputAssociation(org.w3c.dom.Node xmlNode, RuleSetNode ruleSetNode, Map 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();
            subNode = subNode.getNextSibling();
            List assignments = new LinkedList();
            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, null));
        } 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 dataOutputs) {
        // sourceRef
        org.w3c.dom.Node subNode = xmlNode.getFirstChild();
        String source = subNode.getTextContent();
        // targetRef
        subNode = subNode.getNextSibling();
        String target = subNode.getTextContent();
        subNode = subNode.getNextSibling();
        List assignments = new LinkedList();
        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, null));
    }
    
    protected void writeIO(RuleSetNode ruleSetNode, StringBuilder xmlDump) {
        xmlDump.append("      " + EOL);
        for (Map.Entry entry: ruleSetNode.getInMappings().entrySet()) {
            xmlDump.append("        " + EOL);
        }
        for (Map.Entry entry: ruleSetNode.getParameters().entrySet()) {
            if (!"ActorId".equals(entry.getKey()) && entry.getValue() != null) {
                xmlDump.append("        " + EOL);
            }
        }
        for (Map.Entry entry: ruleSetNode.getOutMappings().entrySet()) {
            xmlDump.append("        " + EOL);
        }
        xmlDump.append("        " + EOL);
        for (Map.Entry entry: ruleSetNode.getInMappings().entrySet()) {
            xmlDump.append("          " + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input" + EOL);
        }
        for (Map.Entry entry: ruleSetNode.getParameters().entrySet()) {
            if (!"ActorId".equals(entry.getKey()) && entry.getValue() != null) {
                xmlDump.append("          " + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input" + EOL);
            }
        }
        xmlDump.append(
            "        " + EOL);
        xmlDump.append("        " + EOL);
        for (Map.Entry entry: ruleSetNode.getOutMappings().entrySet()) {
            xmlDump.append("          " + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Output" + EOL);
        }
        xmlDump.append(
            "        " + EOL);
        xmlDump.append(
            "      " + EOL);
        for (Map.Entry entry: ruleSetNode.getInMappings().entrySet()) {
            xmlDump.append("      " + EOL);
            xmlDump.append(
                "        " + XmlDumper.replaceIllegalChars(entry.getValue()) + "" + EOL +
                "        " + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input" + EOL);
            xmlDump.append("      " + EOL);
        }
        for (Map.Entry entry: ruleSetNode.getParameters().entrySet()) {
            if (!"ActorId".equals(entry.getKey()) && entry.getValue() != null) {
                xmlDump.append("      " + EOL);
                xmlDump.append(
                    "        " + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input" + EOL +
                    "        " + EOL +
                    "          " + XmlDumper.replaceIllegalChars(entry.getValue().toString()) + "" + EOL +
                    "          " + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Input" + EOL +
                    "        " + EOL);
                xmlDump.append("      " + EOL);
            }
        }
        for (Map.Entry entry: ruleSetNode.getOutMappings().entrySet()) {
            xmlDump.append("      " + EOL);
            xmlDump.append(
                "        " + XmlBPMNProcessDumper.getUniqueNodeId(ruleSetNode) + "_" + XmlDumper.replaceIllegalChars(entry.getKey()) + "Output" + EOL +
                "        " + XmlDumper.replaceIllegalChars(entry.getValue()) + "" + EOL);
            xmlDump.append("      " + EOL);
        }
    }

}