/*
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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.util;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import org.jbpm.api.JbpmException;
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import org.jbpm.pvm.internal.xml.Entity;
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import org.jbpm.pvm.internal.xml.Parser;
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import org.xml.sax.EntityResolver;
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import org.xml.sax.InputSource;
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/**
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* an implementation of {@link Entity} based on a {@link URL} used in the
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* {@link Parser}s implementation of {@link EntityResolver}.
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*
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* @author Tom Baeyens
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*/
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public class UrlEntity implements Entity {
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protected String systemId = null;
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protected URL url = null;
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public UrlEntity(URL url, String systemId) {
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this.url = url;
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this.systemId = systemId;
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}
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public UrlEntity(String resource, ClassLoader classLoader) {
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this.url = classLoader.getResource(resource);
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if (url!=null) {
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this.systemId = url.toString();
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} else {
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throw new JbpmException("couldn't create Entity from resource "+resource);
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}
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}
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public InputSource getInputSource() {
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try {
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InputStream stream = url.openStream();
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InputSource inputSource = new InputSource(stream);
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inputSource.setSystemId(systemId);
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return inputSource;
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} catch (IOException e) {
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throw new JbpmException("couldn't open stream from url "+url, e);
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}
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}
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}
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