69 lines
2.2 KiB
Java
69 lines
2.2 KiB
Java
/*
|
|
* Copyright (C) 2009 The Guava Authors
|
|
*
|
|
* Licensed 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 com.google.common.collect;
|
|
|
|
import com.google.common.annotations.GwtCompatible;
|
|
import java.io.Serializable;
|
|
import java.util.Arrays;
|
|
|
|
/**
|
|
* A class that implements {@code Comparable} without generics, such as those found in libraries
|
|
* that support Java 1.4 and before. Our library needs to do the bare minimum to accommodate such
|
|
* types, though their use may still require an explicit type parameter and/or warning suppression.
|
|
*
|
|
* @author Kevin Bourrillion
|
|
*/
|
|
@SuppressWarnings("ComparableType")
|
|
@GwtCompatible
|
|
class LegacyComparable implements Comparable, Serializable {
|
|
static final LegacyComparable X = new LegacyComparable("x");
|
|
static final LegacyComparable Y = new LegacyComparable("y");
|
|
static final LegacyComparable Z = new LegacyComparable("z");
|
|
|
|
static final Iterable<LegacyComparable> VALUES_FORWARD = Arrays.asList(X, Y, Z);
|
|
static final Iterable<LegacyComparable> VALUES_BACKWARD = Arrays.asList(Z, Y, X);
|
|
|
|
private final String value;
|
|
|
|
LegacyComparable(String value) {
|
|
this.value = value;
|
|
}
|
|
|
|
@Override
|
|
public int compareTo(Object object) {
|
|
// This method is spec'd to throw CCE if object is of the wrong type
|
|
LegacyComparable that = (LegacyComparable) object;
|
|
return this.value.compareTo(that.value);
|
|
}
|
|
|
|
@Override
|
|
public boolean equals(Object object) {
|
|
if (object instanceof LegacyComparable) {
|
|
LegacyComparable that = (LegacyComparable) object;
|
|
return this.value.equals(that.value);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
return value.hashCode();
|
|
}
|
|
|
|
private static final long serialVersionUID = 0;
|
|
}
|