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DoubleHyperRectangle.java
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DoubleHyperRectangle.java
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/*
* 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.facet.hyperrectangle;
import java.util.Arrays;
import org.apache.lucene.util.NumericUtils;
/**
* Stores a hyper rectangle as an array of DoubleRangePairs
*
* @lucene.experimental
*/
public class DoubleHyperRectangle extends HyperRectangle {
/** Creates DoubleHyperRectangle */
public DoubleHyperRectangle(String label, DoubleRangePair... pairs) {
super(label, convertToLongRangePairs(pairs));
}
private static LongRangePair[] convertToLongRangePairs(DoubleRangePair... pairs) {
if (pairs == null || pairs.length == 0) {
throw new IllegalArgumentException("Pairs cannot be null or empty");
}
return Arrays.stream(pairs).map(DoubleRangePair::toLongRangePair).toArray(LongRangePair[]::new);
}
/** Defines a single range in a DoubleHyperRectangle */
public static class DoubleRangePair {
/** Inclusive min */
public final double min;
/** Inclusive max */
public final double max;
/**
* Creates a DoubleRangePair, very similar to the constructor of {@link
* org.apache.lucene.facet.range.DoubleRange}
*
* @param minIn Min value of pair
* @param minInclusive If minIn is inclusive
* @param maxIn Max value of pair
* @param maxInclusive If maxIn is inclusive
*/
public DoubleRangePair(double minIn, boolean minInclusive, double maxIn, boolean maxInclusive) {
if (Double.isNaN(minIn) || Double.isNaN(maxIn)) {
throw new IllegalArgumentException(
"min and max cannot be NaN: min=" + minIn + ", max=" + maxIn);
}
if (!minInclusive) {
minIn = Math.nextUp(minIn);
}
if (!maxInclusive) {
maxIn = Math.nextDown(maxIn);
}
if (minIn > maxIn) {
throw new IllegalArgumentException(
"Minimum cannot be greater than maximum, max=" + maxIn + ", min=" + minIn);
}
this.min = minIn;
this.max = maxIn;
}
/**
* Converts this to a LongRangePair with sortable long equivalents
*
* @return A LongRangePair equivalent of this object
*/
private LongRangePair toLongRangePair() {
long longMin = NumericUtils.doubleToSortableLong(min);
long longMax = NumericUtils.doubleToSortableLong(max);
return new LongRangePair(longMin, true, longMax, true);
}
}
}