| /******************************************************************************* |
| * 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.ofbiz.base.lang; |
| |
| /** An immutable range of values. */ |
| @SourceMonitored |
| @ThreadSafe |
| public class ComparableRange<T extends Comparable<T>> implements Range<T>, Comparable<ComparableRange<T>> { |
| |
| protected final T start; |
| protected final T end; |
| protected final boolean isPoint; |
| |
| public ComparableRange(T start, T end) { |
| if (start.getClass() != end.getClass()) { |
| throw new IllegalArgumentException("start Class and end Class must be the same"); |
| } |
| if (end.compareTo(start) >= 0) { |
| this.start = start; |
| this.end = end; |
| } else { |
| this.start = end; |
| this.end = start; |
| } |
| this.isPoint = start.equals(end); |
| } |
| |
| @Override |
| public boolean after(Range<T> range) { |
| return this.start.compareTo(range.end()) > 0; |
| } |
| |
| @Override |
| public boolean after(T value) { |
| return this.start.compareTo(value) > 0; |
| } |
| |
| @Override |
| public boolean before(Range<T> range) { |
| return this.end.compareTo(range.start()) < 0; |
| } |
| |
| @Override |
| public boolean before(T value) { |
| return this.end.compareTo(value) < 0; |
| } |
| |
| @Override |
| public T end() { |
| return this.end; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| try { |
| ComparableRange<?> that = (ComparableRange<?>) obj; |
| return this.start.equals(that.start()) && this.end.equals(that.end()); |
| } catch (Exception e) {} |
| return false; |
| } |
| |
| public int compareTo(ComparableRange<T> range) { |
| if (this == range) { |
| return 0; |
| } |
| return this.start.equals(range.start()) ? this.end.compareTo(range.end()) : this.start.compareTo(range.start()); |
| } |
| |
| @Override |
| public boolean includes(Range<T> range) { |
| return this.includes(range.start()) && this.includes(range.end()); |
| } |
| |
| @Override |
| public boolean includes(T value) { |
| if (this.isPoint) { |
| return value.equals(this.start()); |
| } |
| return value.compareTo(this.start()) >= 0 && value.compareTo(this.end()) <= 0; |
| } |
| |
| @Override |
| public boolean isPoint() { |
| return this.isPoint; |
| } |
| |
| @Override |
| public boolean overlaps(Range<T> range) { |
| return range.includes(this.start()) || range.includes(this.end()) || this.includes(range); |
| } |
| |
| @Override |
| public T start() { |
| return this.start; |
| } |
| |
| @Override |
| public String toString() { |
| return this.start + " - " + this.end; |
| } |
| } |