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/**
* ===========================================
* LibLayout : a free Java layouting library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/liblayout/
*
* (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
*
* This library 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 library 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
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: SingleRepositoryURLRewriter.java 6489 2008-11-28 14:53:40Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.modules.output.html;
import java.util.ArrayList;
import org.pentaho.reporting.libraries.repository.ContentEntity;
import org.pentaho.reporting.libraries.repository.ContentLocation;
/**
* This URL-Rewriter assumes that both the content and data entity have been
* created from the same repository. This one builds a relative URL connecting
* the data entity with the content.
*
* @author Thomas Morgner
*/
public class SingleRepositoryURLRewriter implements URLRewriter
{
public SingleRepositoryURLRewriter()
{
}
public String rewrite(final ContentEntity sourceDocument,
final ContentEntity dataEntity)
throws URLRewriteException
{
if (sourceDocument.getRepository().equals(dataEntity.getRepository()) == false)
{
// cannot proceed ..
throw new URLRewriteException("Content and data repository must be the same.");
}
final ArrayList entityNames = new ArrayList();
entityNames.add(dataEntity.getName());
ContentLocation location = dataEntity.getParent();
while (location != null)
{
entityNames.add(location.getName());
location = location.getParent();
}
final ArrayList contentNames = new ArrayList();
location = sourceDocument.getParent();
while (location != null)
{
contentNames.add(location.getName());
location = location.getParent();
}
// now remove all path elements that are equal ..
while (contentNames.isEmpty() == false && entityNames.isEmpty() == false)
{
final String lastEntity = (String) entityNames.get(entityNames.size() - 1);
final String lastContent = (String) contentNames.get(contentNames.size() - 1);
if (lastContent.equals(lastEntity) == false)
{
break;
}
entityNames.remove(entityNames.size() - 1);
contentNames.remove(contentNames.size() - 1);
}
final StringBuffer b = new StringBuffer();
for (int i = entityNames.size() - 1; i >= 0; i--)
{
final String name = (String) entityNames.get(i);
b.append(name);
if (i != 0)
{
b.append('/');
}
}
return b.toString();
}
}
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