58 lines
1.8 KiB
Java
Executable File
58 lines
1.8 KiB
Java
Executable File
/*
|
|
* Copyright (C) 2001-2004 Red Hat Inc. All Rights Reserved.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public License
|
|
* as published by the Free Software Foundation; either version 2.1 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This library 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 library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
package com.arsdigita.london.util;
|
|
|
|
import com.arsdigita.persistence.SessionManager;
|
|
import com.arsdigita.persistence.TransactionContext;
|
|
|
|
public class TransactionLocal {
|
|
|
|
public Object initialValue() {
|
|
return null;
|
|
}
|
|
|
|
public Object get() {
|
|
TransactionContext ctx = SessionManager
|
|
.getSession().getTransactionContext();
|
|
|
|
if (!Boolean.TRUE.equals(ctx.getAttribute(getLoadKey()))) {
|
|
ctx.setAttribute(getLoadKey(), Boolean.TRUE);
|
|
ctx.setAttribute(getDataKey(), initialValue());
|
|
}
|
|
|
|
return ctx.getAttribute(getDataKey());
|
|
}
|
|
|
|
public void set(Object value) {
|
|
TransactionContext ctx = SessionManager
|
|
.getSession().getTransactionContext();
|
|
|
|
ctx.setAttribute(getLoadKey(), Boolean.TRUE);
|
|
ctx.setAttribute(getDataKey(), value);
|
|
}
|
|
|
|
private String getLoadKey() {
|
|
return getDataKey() + ".loaded";
|
|
}
|
|
|
|
private String getDataKey() {
|
|
return getClass().getName() + "." + toString();
|
|
}
|
|
}
|