/*
* jPOS Project [http://jpos.org]
* Copyright (C) 2000-2014 Alejandro P. Revilla
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.jpos.transaction.participant;
import org.jpos.core.Configurable;
import org.jpos.core.Configuration;
import org.jpos.transaction.Context;
import org.jpos.transaction.GroupSelector;
import java.io.Serializable;
/**
* HasEntry is a general purpose GroupSelector that can be used to
* verify that a given object is available in the context.
* It checks the Context for the given entry ('name' property) and returns
* the content of the 'yes' or 'no' properties as the group list.
* If "yes" or "no" is not specified, it returns the constant UNKNOWN
*/
public class HasEntry implements GroupSelector, Configurable {
private Configuration cfg;
public static final String YES = "yes";
public static final String NO = "no";
public static final String UNKNOWN = "UNKNOWN";
public int prepare (long id, Serializable o) {
return PREPARED | NO_JOIN | READONLY;
}
public String select (long id, Serializable ser) {
Context ctx = (Context) ser;
String name = cfg.get ("name");
String action = ctx.get (name) != null ? YES : NO;
return cfg.get (action, UNKNOWN);
}
public void commit (long id, Serializable o) { }
public void abort (long id, Serializable o) { }
public void setConfiguration (Configuration cfg) {
this.cfg = cfg;
}
}