com.mchange.v1.db.sql.schemarep.UniquenessConstraintRepImpl Maven / Gradle / Ivy
/*
* Distributed as part of mchange-commons-java 0.2.11
*
* Copyright (C) 2015 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of EITHER:
*
* 1) The GNU Lesser General Public License (LGPL), version 2.1, as
* published by the Free Software Foundation
*
* OR
*
* 2) The Eclipse Public License (EPL), version 1.0
*
* You may choose which license to accept if you wish to redistribute
* or modify this work. You may offer derivatives of this work
* under the license you have chosen, or you may provide the same
* choice of license which you have been offered here.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received copies of both LGPL v2.1 and EPL v1.0
* along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
* If not, the text of these licenses are currently available at
*
* LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php
*
*/
package com.mchange.v1.db.sql.schemarep;
import java.util.Collection;
import java.util.Set;
import java.util.HashSet;
import java.util.Collections;
import com.mchange.v1.util.SetUtils;
public class UniquenessConstraintRepImpl implements UniquenessConstraintRep
{
Set uniqueColNames;
public UniquenessConstraintRepImpl(Collection colNames)
{ uniqueColNames = Collections.unmodifiableSet( new HashSet( colNames ) ); }
public Set getUniqueColumnNames()
{ return uniqueColNames; }
public boolean equals( Object o )
{
return
o != null &&
this.getClass() == o.getClass() &&
SetUtils.equivalentDisregardingSort( this.uniqueColNames,
((UniquenessConstraintRepImpl) o ).uniqueColNames );
}
public int hashCode()
{
return
this.getClass().hashCode() ^
SetUtils.hashContentsDisregardingSort( uniqueColNames );
}
}