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The javax.rmi and javax.rmi.CORBA classes
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/*
* Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.jboss.com.sun.corba.se.impl.orbutil.closure;
import org.jboss.com.sun.corba.se.spi.orbutil.closure.Closure;
public class Future implements Closure
{
private boolean evaluated;
private Closure closure;
private Object value;
public Future(Closure value)
{
this.evaluated = false;
this.closure = value;
this.value = null;
}
public synchronized Object evaluate()
{
if (!evaluated)
{
evaluated = true;
value = closure.evaluate();
}
return value;
}
}