/**********************************************************************************
* $URL: https://source.sakaiproject.org/svn/rwiki/trunk/rwiki-impl/impl/src/java/uk/ac/cam/caret/sakai/rwiki/component/model/impl/SHAHashMigration.java $
* $Id: SHAHashMigration.java 9644 2006-05-18 11:21:28Z ian@caret.cam.ac.uk $
***********************************************************************************
*
* Copyright (c) 2003, 2004, 2005, 2006 The Sakai Foundation.
*
* Licensed under the Educational Community License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.opensource.org/licenses/ecl1.php
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**********************************************************************************/
package uk.ac.cam.caret.sakai.rwiki.component.model.impl;
import java.util.Iterator;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import uk.ac.cam.caret.sakai.rwiki.model.RWikiObjectImpl;
import uk.ac.cam.caret.sakai.rwiki.service.api.dao.RWikiObjectDao;
import uk.ac.cam.caret.sakai.rwiki.service.api.model.DataMigrationAgent;
import uk.ac.cam.caret.sakai.rwiki.service.api.model.RWikiObject;
/**
* Generates SHA1 hashes for the object type
*
* @author ieb
*/
// FIXME: Component
public class SHAHashMigration implements DataMigrationAgent
{
private static Log log = LogFactory.getLog(SHAHashMigration.class);
private String from;
private String to;
private RWikiObjectDao codao;
private boolean background = false;
/*
* (non-Javadoc)
*
* @see uk.ac.cam.caret.sakai.rwiki.service.api.api.model.DataMigrationAgent#migrate(java.lang.String,
* java.lang.String)
*/
public String migrate(String current, String target,boolean newdb) throws Exception
{
if ((current != null && from == null)
|| (current != null && !current.equals(from)))
{
log.info("Skipping Migration for " + from + " to " + to);
return current;
}
List rwikiObjects = codao.getAll();
if (rwikiObjects != null)
{
long start = System.currentTimeMillis();
for (Iterator i = rwikiObjects.iterator(); i.hasNext();)
{
RWikiObject rwo = (RWikiObject) i.next();
long start2 = System.currentTimeMillis();
String hash = rwo.getSha1();
if (hash == null || hash.length() == 0)
{
hash = RWikiObjectImpl.computeSha1(rwo.getContent());
rwo.setSha1(hash);
log.info(" Hash took "
+ (System.currentTimeMillis() - start2)
+ " ms for " + rwo.getName() + " revision "
+ rwo.getRevision());
codao.updateObject(rwo);
}
}
log.info(" Sha1 Conversion took "
+ (System.currentTimeMillis() - start) + " ms for "
+ rwikiObjects.size() + " items");
}
log.info("Done Migration for " + from + " to " + to);
return to;
}
/**
* @return Returns the codao.
*/
public RWikiObjectDao getRwikiObjectDao()
{
return codao;
}
/**
* @param codao
* The codao to set.
*/
public void setRwikiObjectDao(RWikiObjectDao codao)
{
this.codao = codao;
}
/**
* @return Returns the from.
*/
public String getFrom()
{
return from;
}
/**
* @param from
* The from to set.
*/
public void setFrom(String from)
{
this.from = from;
}
/**
* @return Returns the to.
*/
public String getTo()
{
return to;
}
/**
* @param to
* The to to set.
*/
public void setTo(String to)
{
this.to = to;
}
/**
* @return Returns the background.
*/
public boolean isBackground()
{
return background;
}
/**
* @param background
* The background to set.
*/
public void setBackground(boolean background)
{
this.background = background;
}
}