root/trunk/src/java/org/jcoderz/commons/taskdefs/DummyEntityResolver.java

/*
 * $Id$
 *
 * Copyright 2006, The jCoderZ.org Project. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above
 *      copyright notice, this list of conditions and the following
 *      disclaimer in the documentation and/or other materials
 *      provided with the distribution.
 *    * Neither the name of the jCoderZ.org Project nor the names of
 *      its contributors may be used to endorse or promote products
 *      derived from this software without specific prior written
 *      permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.jcoderz.commons.taskdefs;

import java.io.StringReader;

import org.apache.tools.ant.Project;
import org.apache.tools.ant.Task;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;

/**
 * Dummy Entity Resolver.
 * This entity resolver construct an empty input source and return that.
 *
 * @author Michael Griffel
 */
public final class DummyEntityResolver
      implements EntityResolver
{
   private final Task mTask;

   DummyEntityResolver (Task task)
   {
      mTask = task;
   }

   /** {@inheritDoc} */
   public InputSource resolveEntity (String publicId, String systemId)
   {
      if (mTask != null)
      {
         mTask.log("WARNING: Returning empty input source for entity: "
               + "w/ public id: " + publicId
               + ", system id: " + systemId, Project.MSG_VERBOSE);
      }
      return new InputSource(new StringReader(""));
   }
}