/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.jackrabbit.core.query.lucene.join;
import java.util.ArrayList;
import java.util.List;
import javax.jcr.RepositoryException;
import javax.jcr.query.qom.Constraint;
import javax.jcr.query.qom.QueryObjectModelFactory;
public class Constraints {
public static Constraint and(
QueryObjectModelFactory factory, List<Constraint> constraints)
throws RepositoryException {
int n = constraints.size();
if (n == 0) {
return null;
} else if (n == 1) {
return constraints.get(0);
} else {
int m = n / 2;
return factory.and(
and(factory, constraints.subList(0, m)),
and(factory, constraints.subList(m, n)));
}
}
public static Constraint and(
QueryObjectModelFactory factory, Constraint... constraints)
throws RepositoryException {
List<Constraint> list = new ArrayList<Constraint>(constraints.length);
for (Constraint constraint : constraints) {
if (constraint != null) {
list.add(constraint);
}
}
return and(factory, list);
}
public static Constraint or(
QueryObjectModelFactory factory, List<Constraint> constraints)
throws RepositoryException {
int n = constraints.size();
if (n == 0) {
return null;
} else if (n == 1) {
return constraints.get(0);
} else {
int m = n / 2;
return factory.or(
or(factory, constraints.subList(0, m)),
or(factory, constraints.subList(m, n)));
}
}
}