/*
* Copyright (c) 2011 PonySDK
* Owners:
* Luciano Broussal <luciano.broussal AT gmail.com>
* Mathieu Barbier <mathieu.barbier AT gmail.com>
* Nicolas Ciaravola <nicolas.ciaravola.pro AT gmail.com>
*
* WebSite:
* http://code.google.com/p/pony-sdk/
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.ponysdk.hibernate.query.decorator;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.criterion.CriteriaSpecification;
import org.hibernate.criterion.Order;
import com.ponysdk.core.query.Criterion;
import com.ponysdk.core.query.SortingType;
import com.ponysdk.hibernate.query.CriteriaContext;
public class DefaultSortCriteriaDecorator implements CriteriaDecorator {
@Override
public void render(final CriteriaContext context) {
final Criterion field = context.getCriterion();
if (field.getSortingType() == SortingType.NONE) return;
Criteria criteria = context.getOrderingCriteria();
final List<String> propertyNamePath = Arrays.asList(field.getPojoProperty().split(REGEX_SPLIT));
final Iterator<String> iter = propertyNamePath.iterator();
String key = null;
String associationPath = null;
if (propertyNamePath.size() == 1) {
associationPath = iter.next();
} else while (iter.hasNext()) {
key = iter.next();
if (associationPath == null) {
associationPath = new String(key);
} else {
associationPath += "." + key;
}
if (iter.hasNext()) {
criteria = criteria.createCriteria(associationPath, key, CriteriaSpecification.LEFT_JOIN);
associationPath = new String(key);
}
}
criteria = context.getOrderingCriteria();
if (field.getSortingType() == SortingType.ASCENDING) {
criteria.addOrder(Order.asc(associationPath));
} else if (field.getSortingType() == SortingType.DESCENDING) {
criteria.addOrder(Order.desc(associationPath));
}
}
}