SynchronizationTask.java
/*
* Copyright (C) 2003-2012 eXo Platform SAS.
*
* 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.exoplatform.settings.chromattic;
import org.exoplatform.commons.chromattic.ChromatticLifeCycle;
import org.exoplatform.commons.chromattic.SessionContext;
import org.exoplatform.container.PortalContainer;
import org.exoplatform.settings.impl.SettingServiceImpl;
/**
* Created by The eXo Platform SAS
* Author : thanh_vucong
* thanh_vucong@exoplatform.com
* Dec 10, 2012
*/
public abstract class SynchronizationTask<V>
{
/**
* Executes a task within a context from the specified life cycle. If an existing context already exists
* then this context is used otherwise a context is managed for the duration of the {@link #execute(SessionContext)}
* method.
*
* @param lifeCycle the life cycle
* @return a value
*/
public final V executeWith(ChromatticLifeCycle lifeCycle) {
PortalContainer container = PortalContainer.getInstance();
SettingServiceImpl settingServiceImpl = (SettingServiceImpl) container.getComponentInstanceOfType(SettingServiceImpl.class);
boolean created = settingServiceImpl.startSynchronization();
try {
return execute(lifeCycle.getContext());
}
finally {
settingServiceImpl.stopSynchronization(created);
}
}
/**
* Implementor must provide the task logic here.
*
* @param ctx the context
* @return a value
*/
protected abstract V execute(SessionContext ctx);
}