de.mrapp.util.datastructure.Triple Maven / Gradle / Ivy
/*
* Copyright 2017 Michael Rapp
*
* 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 de.mrapp.util.datastructure;
/**
* A data structure, which eases to pass around a triple of three objects. This object provides a
* sensible implementation of equals(), returning true if equals() is true on each of the contained
* objects.
*
* @param The type of the first object
* @param The type of the second object
* @param The type of the third object
* @author Michael Rapp
* @since 1.0.0
*/
public class Triple {
/**
* The first object.
*/
public final F first;
/**
* The second object.
*/
public final S second;
/**
* The third object.
*/
public final T third;
/**
* Creates a new triple.
*
* @param first The first object as an instance of the generic type F
* @param second The second object as an instance of the generic type S
* @param third The third object as an instance of the generic type T
*/
public Triple(final F first, final S second, final T third) {
this.first = first;
this.second = second;
this.third = third;
}
/**
* Creates a new triple.
*
* @param The type of the first object
* @param The type of the second object
* @param The type of the third object
* @param first The first object
* @param second The second object
* @param third The third object
* @return The triple, which has been created, as an instance of the class {@link Triple}
*/
public static Triple create(final F first, final S second, final T third) {
return new Triple<>(first, second, third);
}
@Override
public final int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((first == null) ? 0 : first.hashCode());
result = prime * result + ((second == null) ? 0 : second.hashCode());
result = prime * result + ((third == null) ? 0 : third.hashCode());
return result;
}
@Override
public final boolean equals(final Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Triple other = (Triple) obj;
if (first == null) {
if (other.first != null)
return false;
} else if (!first.equals(other.first))
return false;
if (second == null) {
if (other.second != null)
return false;
} else if (!second.equals(other.second))
return false;
if (third == null) {
if (other.third != null)
return false;
} else if (!third.equals(other.third))
return false;
return true;
}
}