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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.index.similarity;
import org.apache.lucene.search.similarities.Similarity;
import java.util.Objects;
/**
* Wrapper around a {@link Similarity} and its name.
*/
public final class SimilarityProvider {
private final String name;
private final Similarity similarity;
public SimilarityProvider(String name, Similarity similarity) {
this.name = name;
this.similarity = similarity;
}
/**
* Return the name of this {@link Similarity}.
*/
public String name() {
return name;
}
/**
* Return the wrapped {@link Similarity}.
*/
public Similarity get() {
return similarity;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
SimilarityProvider that = (SimilarityProvider) o;
/**
* We check name
only because the similarity
is
* re-created for each new instance and they don't implement equals.
* This is not entirely correct though but we only use equality checks
* for similarities inside the same index and names are unique in this case.
**/
return Objects.equals(name, that.name);
}
@Override
public int hashCode() {
/**
* We use name
only because the similarity
is
* re-created for each new instance and they don't implement equals.
* This is not entirely correct though but we only use equality checks
* for similarities a single index and names are unique in this case.
**/
return Objects.hash(name);
}
}