com.mchange.v2.coalesce.AbstractStrongCoalescer Maven / Gradle / Ivy
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c3p0 is an easy-to-use library for augmenting traditional (DriverManager-based) JDBC drivers with JNDI-bindable DataSources,
including DataSources that implement Connection and Statement Pooling, as described by the jdbc3 spec and jdbc2 std extension.
/*
* Distributed as part of c3p0 v.0.9.1
*
* 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.coalesce;
import java.util.*;
class AbstractStrongCoalescer implements Coalescer
{
Map coalesced;
AbstractStrongCoalescer( Map coalesced )
{ this.coalesced = coalesced; }
public Object coalesce( Object o )
{
Object out = coalesced.get( o );
if ( out == null )
{
coalesced.put( o , o );
out = o;
}
return out;
}
public int countCoalesced()
{ return coalesced.size(); }
public Iterator iterator()
{ return new CoalescerIterator( coalesced.keySet().iterator() ); }
}