/*
* Copyright (C) 2012 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.webui.page;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.exoplatform.container.ExoContainer;
import org.exoplatform.container.PortalContainer;
import org.exoplatform.portal.mop.QueryResult;
import org.exoplatform.portal.mop.SiteType;
import org.exoplatform.portal.mop.page.PageContext;
import org.exoplatform.portal.mop.page.PageService;
/**
* @author <a href="mailto:haithanh0809@gmail.com">Hai Thanh Nguyen</a>
* @version $Id$
*
*/
public class PageIterator implements Iterator<List<?>> {
private final String ownerType;
private final String ownerId;
private final String name;
private final String title;
private int pageSize = 10;
private int currentIndex = 0;
private boolean hasNext = true;
public PageIterator(String ownerType, String ownerId, String name, String title, int pageSize) {
this.ownerType = ownerType;
this.ownerId = ownerId;
this.name = name;
this.title = title;
this.pageSize = pageSize;
}
public boolean hasNext() {
if (hasNext && currentIndex == 0) {
ExoContainer container = PortalContainer.getInstance();
PageService pageService = (PageService) container.getComponentInstance(PageService.class);
QueryResult<PageContext> result = pageService.findPages(0, 1, SiteType.valueOf(ownerType.toUpperCase()), ownerId,
name, title);
hasNext = result.getSize() > 0;
}
//
return hasNext;
}
/**
*
* @return Returns a list of pages or returns null if has not any page.
*/
public List<PageModel> next() {
ExoContainer container = PortalContainer.getInstance();
PageService pageService = (PageService) container.getComponentInstance(PageService.class);
QueryResult<PageContext> result = pageService.findPages(currentIndex, pageSize + 1,
SiteType.valueOf(ownerType.toUpperCase()), ownerId, name, title);
int size = result.getSize();
hasNext = size > pageSize;
//
if (size > 0) {
int hsize = hasNext ? pageSize : size;
List<PageModel> holder = new ArrayList<PageModel>(hsize);
Iterator<PageContext> iterator = result.iterator();
while (holder.size() < hsize) {
holder.add(new PageModel(iterator.next()));
}
currentIndex += holder.size();
return holder;
} else {
return null;
}
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}