org.apache.lucene.util.ArrayIntroSorter 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.lucene.util;
import java.util.Comparator;
/**
* An {@link IntroSorter} for object arrays.
* @lucene.internal
*/
final class ArrayIntroSorter extends IntroSorter {
private final T[] arr;
private final Comparator comparator;
private T pivot;
/** Create a new {@link ArrayInPlaceMergeSorter}. */
public ArrayIntroSorter(T[] arr, Comparator comparator) {
this.arr = arr;
this.comparator = comparator;
pivot = null;
}
@Override
protected int compare(int i, int j) {
return comparator.compare(arr[i], arr[j]);
}
@Override
protected void swap(int i, int j) {
ArrayUtil.swap(arr, i, j);
}
@Override
protected void setPivot(int i) {
pivot = arr[i];
}
@Override
protected int comparePivot(int i) {
return comparator.compare(pivot, arr[i]);
}
}