/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, availible at the root
* application directory.
*/
package org.geoserver.wfs.kvp;
import org.geoserver.ows.NestedKvpParser;
import org.opengis.filter.FilterFactory;
import org.opengis.filter.sort.SortBy;
import org.opengis.filter.sort.SortOrder;
/**
* Parses kvp of the form 'sortBy=Field1 {A|D},Field2 {A|D}...' into a
* list of {@link org.opengis.filter.sort.SortBy}.
*
* @author Justin Deoliveira, The Open Planning Project
*
*/
public class SortByKvpParser extends NestedKvpParser {
FilterFactory filterFactory;
public SortByKvpParser(FilterFactory filterFactory) {
super("sortBy", SortBy.class);
this.filterFactory = filterFactory;
}
/**
* Parses a token of the form 'Field1 {A|D}' into an instnace of
* {@link SortBy}.
*/
protected Object parseToken(String token) throws Exception {
String[] nameOrder = token.split(" ");
String propertyName = nameOrder[0];
SortOrder order = SortOrder.ASCENDING;
if (nameOrder.length > 1) {
if ("D".equalsIgnoreCase(nameOrder[1])) {
order = SortOrder.DESCENDING;
}
}
return filterFactory.sort(propertyName, order);
}
}