/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jbpm.pvm.internal.wire.binding;
import java.util.List;
import org.jbpm.pvm.internal.util.XmlUtil;
import org.jbpm.pvm.internal.wire.descriptor.ArgDescriptor;
import org.jbpm.pvm.internal.wire.operation.SubscribeOperation;
import org.jbpm.pvm.internal.xml.Parse;
import org.jbpm.pvm.internal.xml.Parser;
import org.w3c.dom.Element;
/** parses a descriptor for a {@link SubscribeOperation subscribe operation}.
*
* See schema docs for more details.
*
* @author Tom Baeyens
* @author Guillaume Porcher (documentation)
*/
public class SubscribeBinding extends WireOperationBinding {
public SubscribeBinding() {
super("subscribe");
}
public Object parse(Element element, Parse parse, Parser parser) {
SubscribeOperation subscribeOperation = new SubscribeOperation();
// these are the different ways of specifying observables:
// <subscribe [context='contextName'] [event(s)='...']... /> will use the context as the observable
// <subscribe [context='contextName'] object(s)='objectName' [event(s)='...'] ... /> will use the object(s) with the given name in the specified context
// <subscribe [context='contextName'] to='wire-events' event(s)='...' [object(s)='...'] ... /> will listen to wire events of a specific object in the specified context
// context
String contextName = XmlUtil.attribute(element, "context");
subscribeOperation.setContextName(contextName);
// to
String to = XmlUtil.attribute(element, "to");
if ("wire-events".equalsIgnoreCase(to)) {
subscribeOperation.setWireEvents(true);
}
// events
List<String> eventNames = XmlUtil.parseList(element, "event");
subscribeOperation.setEventNames(eventNames);
// objects
List<String> objectNames = XmlUtil.parseList(element, "object");
subscribeOperation.setObjectNames(objectNames);
// method & args
String methodName = XmlUtil.attribute(element, "method");
subscribeOperation.setMethodName(methodName);
List<Element> argElements = XmlUtil.elements(element, "arg");
Parser wireParser = (Parser) parser;
List<ArgDescriptor> argDescriptors = wireParser.parseArgs(argElements, parse);
subscribeOperation.setArgDescriptors(argDescriptors);
return subscribeOperation;
}
}