/*
* 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.constraint;
import javax.jcr.Value;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
import org.apache.jackrabbit.core.query.lucene.ScoreNode;
import org.apache.jackrabbit.core.query.lucene.Util;
import org.apache.jackrabbit.core.state.PropertyState;
import org.apache.jackrabbit.core.value.InternalValue;
import org.apache.jackrabbit.core.value.ValueFactoryImpl;
import org.apache.jackrabbit.spi.QValueFactory;
/**
* <code>LengthOperand</code> implements a length operand.
*/
public class LengthOperand extends DynamicOperand {
/**
* The property value operand for which to return the length.
*/
private final PropertyValueOperand property;
/**
* Creates a new length operand.
*
* @param property the operand for which to return the length.
*/
public LengthOperand(PropertyValueOperand property) {
super();
this.property = property;
}
/**
* {@inheritDoc}
*/
public Value[] getValues(ScoreNode sn, EvaluationContext context)
throws RepositoryException {
PropertyState ps = property.getPropertyState(sn, context);
if (ps == null) {
return EMPTY;
} else {
ValueFactoryImpl vf = (ValueFactoryImpl) context.getSession().getValueFactory();
QValueFactory qvf = vf.getQValueFactory();
InternalValue[] values = ps.getValues();
Value[] lengths = new Value[values.length];
for (int i = 0; i < lengths.length; i++) {
long len;
int type = values[i].getType();
if (type == PropertyType.NAME) {
len = vf.createValue(qvf.create(values[i].getName())).getString().length();
} else if (type == PropertyType.PATH) {
len = vf.createValue(qvf.create(values[i].getPath())).getString().length();
} else {
len = Util.getLength(values[i]);
}
lengths[i] = vf.createValue(len);
}
return lengths;
}
}
}