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AbstractTriggersVisitor.java
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/
AbstractTriggersVisitor.java
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/*
* eXist Open Source Native XML Database
* Copyright (C) 2011-2012 The eXist Project
* http://exist-db.org
*
* This program 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
* 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 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* $Id$
*/
package org.exist.collections.triggers;
import java.util.List;
import org.exist.storage.DBBroker;
/**
*
* @author aretter
*/
public abstract class AbstractTriggersVisitor<T extends Trigger> implements TriggersVisitor<T> {
private final DBBroker broker;
private final AbstractTriggerProxies<T> proxies;
private List<T> triggers;
public AbstractTriggersVisitor(DBBroker broker, AbstractTriggerProxies<T> proxies) {
this.broker = broker;
this.proxies = proxies;
}
/**
* lazy instantiated
*/
protected List<T> getTriggers() throws TriggerException {
if(triggers == null) {
triggers = proxies.instantiateTriggers(broker);
}
return triggers;
}
}