/*
* 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;
import org.apache.lucene.document.FieldSelector;
import org.apache.lucene.document.FieldSelectorResult;
/**
* <code>FieldSelectors</code> contains commonly used field selectors.
*/
public class FieldSelectors {
/**
* Do not instantiate.
*/
private FieldSelectors() {
}
@SuppressWarnings("serial")
public static final FieldSelector UUID = new FieldSelector() {
/**
* Only accepts {@link FieldNames#UUID}.
*
* @param fieldName the field name to check.
* @return result.
*/
public FieldSelectorResult accept(String fieldName) {
if (FieldNames.UUID == fieldName) {
return FieldSelectorResult.LOAD_AND_BREAK;
} else {
return FieldSelectorResult.NO_LOAD;
}
}
};
@SuppressWarnings("serial")
public static final FieldSelector UUID_AND_PARENT = new FieldSelector() {
/**
* Accepts {@link FieldNames#UUID} and {@link FieldNames#PARENT}.
*
* @param fieldName the field name to check.
* @return result.
*/
public FieldSelectorResult accept(String fieldName) {
if (FieldNames.UUID == fieldName) {
return FieldSelectorResult.LOAD;
} else if (FieldNames.PARENT == fieldName) {
return FieldSelectorResult.LOAD;
} else {
return FieldSelectorResult.NO_LOAD;
}
}
};
}