/**
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.repository.events;
import org.drools.repository.AssetItem;
import org.drools.repository.VersionableItem;
import java.io.InputStream;
import java.util.List;
import java.util.ArrayList;
/**
* This manages storage events, which may load/save from another location, or just notify on change etc.
* @author Michael Neale
*/
public class StorageEventManager {
static List<CheckinEvent> checkinEvents = new ArrayList<CheckinEvent>();
static LoadEvent le = loadEvent();
static SaveEvent se = saveEvent();
static LoadEvent loadEvent() {
String leClassName = System.getProperty("guvnor.loadEventListener", "");
try {
if (!leClassName.equals("")) {
return (LoadEvent) Class.forName(leClassName).newInstance();
} else {
return null;
}
} catch (Exception e) {
System.err.println("Unable to initialise the load event listener: " + leClassName);
e.printStackTrace();
return null;
}
}
static SaveEvent saveEvent() {
String seClassName = System.getProperty("guvnor.saveEventListener", "");
try {
if (!seClassName.equals("")) {
return (SaveEvent) Class.forName(seClassName).newInstance();
} else {
return null;
}
} catch (Exception e) {
System.err.println("Unable to initialise the save event listener: " + seClassName);
e.printStackTrace();
return null;
}
}
public static boolean hasLoadEvent() {
return le != null;
}
public static boolean hasSaveEvent() {
return se != null;
}
public static LoadEvent getLoadEvent() {
return le;
}
public static SaveEvent getSaveEvent() {
return se;
}
public static void registerCheckinEvent(CheckinEvent ev) {
checkinEvents.add(ev);
}
/**
* Process any checkin event listeners.
*/
public static void doCheckinEvents(VersionableItem item) {
if (item instanceof AssetItem) {
AssetItem asset = (AssetItem) item;
for (CheckinEvent e : checkinEvents) {
e.afterCheckin(asset);
}
}
}
}