/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.quercus.env;
/**
* Encapsulates an environment entry for a variable. The EnvVar is a
* container for Vars.
*/
public class LazySaveEnvVar extends EnvVar
{
private int _id;
private Value _value;
public LazySaveEnvVar(int id, Value value)
{
_id = id;
_value = value;
}
/**
* Returns the current value.
*/
public Value get()
{
return getEnvVar().get();
}
/**
* Sets the current value.
*/
public Value set(Value value)
{
return getEnvVar().set(value);
}
/**
* Returns the current Var.
*/
public Var getVar()
{
return getEnvVar().getVar();
}
/**
* Sets the var.
*/
public Var setVar(Var var)
{
return getEnvVar().setVar(var);
}
private EnvVar getEnvVar()
{
Env env = Env.getCurrent();
EnvVar []globals = env.getGlobalList();
if (globals[_id] == this) {
EnvVar var = new EnvVarImpl(new Var());
var.set(_value.copy(env));
globals[_id] = var;
}
return globals[_id];
}
}