org.apache.solr.search.function.FieldCacheSource Maven / Gradle / Ivy
/**
* 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.solr.search.function;
import org.apache.lucene.search.FieldCache;
/**
* A base class for ValueSource implementations that retrieve values for
* a single field from the {@link org.apache.lucene.search.FieldCache}.
*
* @version $Id: FieldCacheSource.java 794328 2009-07-15 17:21:04Z shalin $
*/
public abstract class FieldCacheSource extends ValueSource {
protected String field;
protected FieldCache cache = FieldCache.DEFAULT;
public FieldCacheSource(String field) {
this.field=field;
}
public FieldCache getFieldCache() {
return cache;
}
public String description() {
return field;
}
public boolean equals(Object o) {
if (!(o instanceof FieldCacheSource)) return false;
FieldCacheSource other = (FieldCacheSource)o;
return this.field.equals(other.field)
&& this.cache == other.cache;
}
public int hashCode() {
return cache.hashCode() + field.hashCode();
};
}