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