org.elasticsearch.common.lucene.HashedBytesRef Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon 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.common.lucene;
import org.apache.lucene.util.BytesRef;
/**
* A wrapped to {@link BytesRef} that also caches the hashCode for it.
*/
public class HashedBytesRef {
public BytesRef bytes;
public int hash;
public HashedBytesRef() {
}
public HashedBytesRef(String bytes) {
this(new BytesRef(bytes));
}
public HashedBytesRef(BytesRef bytes) {
this(bytes, bytes.hashCode());
}
public HashedBytesRef(BytesRef bytes, int hash) {
this.bytes = bytes;
this.hash = hash;
}
public HashedBytesRef resetHashCode() {
this.hash = bytes.hashCode();
return this;
}
public HashedBytesRef reset(BytesRef bytes, int hash) {
this.bytes = bytes;
this.hash = hash;
return this;
}
@Override
public int hashCode() {
return hash;
}
@Override
public boolean equals(Object other) {
if (other instanceof HashedBytesRef) {
return bytes.equals(((HashedBytesRef) other).bytes);
}
return false;
}
@Override
public String toString() {
return bytes.toString();
}
public HashedBytesRef deepCopy() {
return deepCopyOf(this);
}
public static HashedBytesRef deepCopyOf(HashedBytesRef other) {
BytesRef copy = new BytesRef();
copy.copyBytes(other.bytes);
return new HashedBytesRef(copy, other.hash);
}
}