org.jbpm.compiler.xml.processes.MappingHandler 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.compiler.xml.processes;
import java.util.HashSet;
import org.drools.core.xml.BaseAbstractHandler;
import org.drools.core.xml.ExtensibleXmlParser;
import org.drools.core.xml.Handler;
import org.jbpm.process.core.context.variable.Mappable;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class MappingHandler extends BaseAbstractHandler
implements
Handler {
public MappingHandler() {
if ( (this.validParents == null) && (this.validPeers == null) ) {
this.validParents = new HashSet();
this.validParents.add( Mappable.class );
this.validPeers = new HashSet();
this.validPeers.add( null );
this.allowNesting = false;
}
}
public Object start(final String uri,
final String localName,
final Attributes attrs,
final ExtensibleXmlParser parser) throws SAXException {
parser.startElementBuilder( localName,
attrs );
Mappable mappable = (Mappable) parser.getParent();
final String type = attrs.getValue("type");
emptyAttributeCheck(localName, "type", type, parser);
final String fromName = attrs.getValue("from");
emptyAttributeCheck(localName, "from", fromName, parser);
final String toName = attrs.getValue("to");
emptyAttributeCheck(localName, "to", toName, parser);
if ("in".equals(type)) {
mappable.addInMapping(toName, fromName);
} else if ("out".equals(type)) {
mappable.addOutMapping(fromName, toName);
} else {
throw new SAXParseException(
"Unknown mapping type " + type, parser.getLocator());
}
return null;
}
public Object end(final String uri,
final String localName,
final ExtensibleXmlParser parser) throws SAXException {
parser.endElementBuilder();
return null;
}
public Class generateNodeFor() {
return null;
}
}