/*
* Copyright [1999-2015] Wellcome Trust Sanger Institute and the EMBL-European Bioinformatics Institute
* Copyright [2016-2017] EMBL-European Bioinformatics Institute
*
* 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.
*/
/**
* Unit
*
* @author dstaines
* @author $Author$
* @version $Revision$
*/
package org.ensembl.healthcheck.util;
import org.apache.commons.lang.NullArgumentException;
/**
* @author dstaines
*
* @param <A>
*/
public class Unit<A> {
public final A a;
public Unit(A a) {
if (a == null) {
throw new NullArgumentException(this.getClass().getSimpleName()
+ " cannot be instantiated with null arguments");
}
this.a = a;
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return (a == null) ? 0 : a.hashCode();
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@SuppressWarnings("unchecked")
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Unit<A> other = (Unit<A>) obj;
if (a == null) {
if (other.a != null)
return false;
} else if (!a.equals(other.a))
return false;
return true;
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "a=[" + String.valueOf(a) + "]";
}
}