com.mchange.v2.c3p0.impl.IdentityTokenizedCoalesceChecker Maven / Gradle / Ivy
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/*
* Distributed as part of c3p0 v.0.9.1.1
*
* Copyright (C) 2005 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1, as
* published by the Free Software Foundation.
*
* 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. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software; see the file LICENSE. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package com.mchange.v2.c3p0.impl;
import com.mchange.v2.coalesce.*;
public final class IdentityTokenizedCoalesceChecker implements CoalesceChecker
{
public static IdentityTokenizedCoalesceChecker INSTANCE = new IdentityTokenizedCoalesceChecker();
public boolean checkCoalesce( Object a, Object b )
{
IdentityTokenized aa = (IdentityTokenized) a;
IdentityTokenized bb = (IdentityTokenized) b;
String ta = aa.getIdentityToken();
String tb = bb.getIdentityToken();
if (ta == null || tb == null)
throw new NullPointerException( "[c3p0 bug] An IdentityTokenized object has no identity token set?!?! " + (ta == null ? ta : tb) );
else
return ta.equals(tb);
}
public int coalesceHash( Object a )
{
String t = ((IdentityTokenized) a).getIdentityToken();
return (t != null ? t.hashCode() : 0);
}
private IdentityTokenizedCoalesceChecker()
{}
}