/*
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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.descriptor;
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import org.jbpm.internal.log.Log;
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import org.jbpm.pvm.internal.env.EnvironmentImpl;
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import org.jbpm.pvm.internal.wire.WireContext;
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import org.jbpm.pvm.internal.wire.WireException;
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/**
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* @author Tom Baeyens
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*/
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public class EnvDescriptor extends AbstractDescriptor {
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private static final long serialVersionUID = 1L;
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private static final Log log = Log.getLog(EnvDescriptor.class.getName());
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protected String objectName;
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protected String typeName;
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protected Class<?> type;
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public EnvDescriptor() {
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}
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public EnvDescriptor(Class<?> type) {
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this.type = type;
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}
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public Object construct(WireContext wireContext) {
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EnvironmentImpl environment = EnvironmentImpl.getCurrent();
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if (environment==null) {
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throw new WireException("no environment to get object "+(objectName!=null ? objectName : typeName));
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}
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if (objectName!=null) {
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log.trace("looking up "+objectName+" by name in environment");
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return environment.get(objectName);
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}
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log.trace("looking up an object of type "+typeName+" in environment");
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if (type==null) {
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try {
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ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
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type = classLoader.loadClass(typeName);
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} catch (Exception e) {
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throw new WireException("couldn't load class "+typeName, e);
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}
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}
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return environment.get(type);
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}
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public void setObjectName(String objectName) {
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this.objectName = objectName;
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}
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public void setTypeName(String typeName) {
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this.typeName = typeName;
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}
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public void setType(Class< ? > type) {
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this.type = type;
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}
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}
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