/**
* Copyright (C) 2010-2014 Morgner UG (haftungsbeschränkt)
*
* This file is part of Structr <http://structr.org>.
*
* Structr is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Structr 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.rest.resource;
import org.structr.core.Result;
import java.util.Collections;
import java.util.logging.Logger;
import javax.servlet.http.HttpServletRequest;
import org.structr.common.GraphObjectComparator;
import org.structr.core.property.PropertyKey;
import org.structr.common.SecurityContext;
import org.structr.common.error.FrameworkException;
import org.structr.common.error.InvalidSortKey;
import org.structr.rest.exception.IllegalPathException;
import org.structr.rest.servlet.JsonRestServlet;
/**
*
* @author Christian Morgner
*/
public class SortResource extends WrappingResource {
private static final Logger logger = Logger.getLogger(SortResource.class.getName());
private String sortOrder = null;
private String sortKey = null;
public SortResource(SecurityContext securityContext, String sortKey, String sortOrder) {
this.securityContext = securityContext;
this.sortKey = sortKey;
this.sortOrder = sortOrder;
}
@Override
public boolean checkAndConfigure(String part, SecurityContext securityContext, HttpServletRequest request) {
this.sortKey = request.getParameter(JsonRestServlet.REQUEST_PARAMETER_SORT_KEY);
this.sortOrder = request.getParameter(JsonRestServlet.REQUEST_PARAMETER_SORT_ORDER);
return sortKey != null;
}
@Override
public Result doGet(PropertyKey sortKey, boolean sortDescending, int pageSize, int page, String offsetId) throws FrameworkException {
if(wrappedResource != null) {
Result result = wrappedResource.doGet(sortKey, sortDescending, pageSize, page, offsetId);
try {
Collections.sort(result.getResults(), new GraphObjectComparator(sortKey, sortOrder));
} catch(Throwable t) {
throw new FrameworkException("base", new InvalidSortKey(sortKey));
}
return result;
}
throw new IllegalPathException();
}
@Override
public Resource tryCombineWith(Resource next) throws FrameworkException {
return super.tryCombineWith(next);
}
public String getSortOrder() {
return sortOrder;
}
public String getSortKey() {
return sortKey;
}
@Override
public void postProcessResultSet(Result result) {
result.setSortOrder(sortOrder);
result.setSortKey(sortKey);
}
@Override
public String getResourceSignature() {
return wrappedResource.getResourceSignature();
}
}