/*
* Copyright (c) 1998-2010 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;
import java.util.IdentityHashMap;
/**
* Root for saving copy information for the serialization cache.
*/
public class CopyRoot implements EnvCleanup {
private final UnserializeCacheEntry _entry;
private Value _root;
private boolean _isModified;
private IdentityHashMap<Value, Value> _copyMap = new IdentityHashMap<Value, Value>();
public CopyRoot(UnserializeCacheEntry entry) {
_entry = entry;
}
/**
* Indicate that the contents are modified
*/
public void setModified() {
_isModified = true;
}
/**
* True if it's modified
*/
public boolean isModified() {
return _isModified;
}
/**
* Returns the root
*/
public Value getRoot() {
return _root;
}
public void setRoot(Value root) {
_root = root;
// clear when setting root since the unserialization process itself
// sets the modify flag
_isModified = false;
}
public void putCopy(Value value, Value copy) {
_copyMap.put(value, copy);
}
public Value getCopy(Value value) {
return _copyMap.get(value);
}
public void allocate(Env env) {
env.addCleanup(this);
}
@Override
public void cleanup()
throws Exception {
if (!_isModified) {
_entry.free(this);
}
}
}