/**
* 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.HashSet;
import java.util.List;
import java.util.Map;
import org.drools.process.core.datatype.DataType;
import org.drools.process.core.datatype.impl.type.ObjectDataType;
import org.drools.xml.BaseAbstractHandler;
import org.drools.xml.ExtensibleXmlParser;
import org.drools.xml.Handler;
import org.jbpm.bpmn2.core.Association;
import org.jbpm.bpmn2.core.ItemDefinition;
import org.jbpm.bpmn2.core.Lane;
import org.jbpm.bpmn2.core.SequenceFlow;
import org.jbpm.compiler.xml.ProcessBuildData;
import org.jbpm.process.core.ContextContainer;
import org.jbpm.process.core.context.variable.Variable;
import org.jbpm.process.core.context.variable.VariableScope;
import org.jbpm.workflow.core.Node;
import org.jbpm.workflow.core.node.WorkItemNode;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
public class PropertyHandler extends BaseAbstractHandler implements Handler {
public PropertyHandler() {
initValidParents();
initValidPeers();
this.allowNesting = false;
}
protected void initValidParents() {
this.validParents = new HashSet<Class<?>>();
this.validParents.add(ContextContainer.class);
this.validParents.add(WorkItemNode.class);
}
protected void initValidPeers() {
this.validPeers = new HashSet<Class<?>>();
this.validPeers.add(null);
this.validPeers.add(Lane.class);
this.validPeers.add(Variable.class);
this.validPeers.add(Node.class);
this.validPeers.add(SequenceFlow.class);
this.validPeers.add(Lane.class);
this.validPeers.add(Association.class);
}
@SuppressWarnings("unchecked")
public Object start(final String uri, final String localName,
final Attributes attrs, final ExtensibleXmlParser parser)
throws SAXException {
parser.startElementBuilder(localName, attrs);
final String id = attrs.getValue("id");
final String itemSubjectRef = attrs.getValue("itemSubjectRef");
Object parent = parser.getParent();
if (parent instanceof ContextContainer) {
ContextContainer contextContainer = (ContextContainer) parent;
VariableScope variableScope = (VariableScope)
contextContainer.getDefaultContext(VariableScope.VARIABLE_SCOPE);
List variables = variableScope.getVariables();
Variable variable = new Variable();
variable.setName(id);
// retrieve type from item definition
DataType dataType = new ObjectDataType();
Map<String, ItemDefinition> itemDefinitions = (Map<String, ItemDefinition>)
((ProcessBuildData) parser.getData()).getMetaData("ItemDefinitions");
if (itemDefinitions != null) {
ItemDefinition itemDefinition = itemDefinitions.get(itemSubjectRef);
if (itemDefinition != null) {
dataType = new ObjectDataType(itemDefinition.getStructureRef());
}
}
variable.setType(dataType);
variables.add(variable);
return variable;
}
return new Variable();
}
public Object end(final String uri, final String localName,
final ExtensibleXmlParser parser) throws SAXException {
parser.endElementBuilder();
return parser.getCurrent();
}
public Class<?> generateNodeFor() {
return Variable.class;
}
}