/*
* Copyright (C) 2010 eXo Platform SAS.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.portal.pom.config.tasks;
import org.chromattic.api.query.QueryResult;
import org.exoplatform.commons.utils.ListAccess;
import org.exoplatform.portal.config.Query;
import org.exoplatform.portal.pom.config.POMSession;
import org.exoplatform.portal.pom.config.POMSessionManager;
import org.exoplatform.portal.pom.config.POMTask;
import org.exoplatform.portal.pom.data.Mapper;
import org.exoplatform.portal.pom.data.PageData;
import org.gatein.mop.api.workspace.ObjectType;
import org.gatein.mop.api.workspace.Page;
import org.gatein.mop.api.workspace.Site;
/**
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
public abstract class MOPAccess<E, I> implements ListAccess<E>
{
/** . */
private final POMSessionManager mgr;
/** . */
private final ObjectType<Site> ownerType;
/** . */
private final String ownerId;
/** . */
private final String title;
/** . */
private Integer size;
MOPAccess(POMSessionManager mgr, Query<E> query)
{
String ownerType = query.getOwnerType();
ObjectType<Site> siteType = null;
if (ownerType != null)
{
siteType = Mapper.parseSiteType(ownerType);
}
//
this.mgr = mgr;
this.ownerType = siteType;
this.ownerId = query.getOwnerId();
this.title = query.getTitle();
this.size = null;
}
public E[] load(final int index, final int length) throws Exception, IllegalArgumentException
{
return mgr.execute(new POMTask<E[]>()
{
public E[] run(POMSession session) throws Exception
{
QueryResult<I> res = findW(session, ownerType, ownerId, title, index, length);
E[] elements = createT(length);
int index = 0;
while (res.hasNext() && index < length)
{
I internal = res.next();
E external = convert(session, internal);
elements[index++] = external;
}
return elements;
}
public String toString()
{
return MOPAccess.this.getClass().getSimpleName() + "[offset=" + index + ",limit=" + length + "]";
}
});
}
public int getSize() throws Exception
{
if (size == null)
{
size = mgr.execute(new POMTask<Integer>()
{
public Integer run(POMSession session) throws Exception
{
QueryResult res = findW(session, ownerType, ownerId, title, 0, 1);
return res.hits();
}
public String toString()
{
return MOPAccess.this.getClass().getSimpleName() + "[size]";
}
});
if (size == null)
{
size = 0;
}
}
return size;
}
protected abstract QueryResult<I> findW(
POMSession session,
ObjectType<Site> siteType,
String ownerId,
String title, int offset, int limit);
protected abstract E[] createT(int length);
protected abstract E convert(POMSession session, I internal);
public static class PageAccess extends MOPAccess<PageData, Page>
{
public PageAccess(POMSessionManager mgr, Query<PageData> pageDataQuery)
{
super(mgr, pageDataQuery);
}
@Override
protected QueryResult<Page> findW(POMSession session, ObjectType<Site> siteType, String ownerId, String title, int offset, int limit)
{
return session.findObjects(ObjectType.PAGE, siteType, ownerId, title, offset, limit);
}
@Override
protected PageData convert(POMSession session, Page internal)
{
return new Mapper(session).load(internal);
}
@Override
protected PageData[] createT(int length)
{
return new PageData[length];
}
}
}