/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* 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.jboss.capedwarf.server.api.mvc;
import org.jboss.capedwarf.common.dto.DTOModel;
import org.jboss.capedwarf.common.serialization.GzipOptionalSerializator;
import org.jboss.capedwarf.common.serialization.Serializator;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
/**
* Abstract collections action.
*
* @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
*/
public abstract class AbstractCollectionsAction<T extends Serializable> extends AbstractAction {
private Serializator serializator;
protected void doInitialize(ServletContext context) {
super.doInitialize(context);
serializator = new GzipOptionalSerializator(getSerializator());
}
protected abstract Serializator getSerializator();
protected abstract DTOModel<T> getDtoModel();
/**
* Push topics to response.
*
* @param elements the elements
* @param resp the response
* @throws java.io.IOException for any I/O error
*/
@SuppressWarnings({"unchecked"})
protected void toDTO(Iterable<T> elements, HttpServletResponse resp) throws IOException {
try {
List dtos = new ArrayList();
for (T t : elements) {
Object dto = getDtoModel().toDTO(t);
dtos.add(dto);
}
prepareResponse(resp);
serializator.serialize(dtos, resp.getOutputStream());
} catch (Exception e) {
log.log(Level.WARNING, "Error handling collections.", e);
resp.sendError(HttpServletResponse.SC_SEE_OTHER);
}
}
}