/**
* Copyright (C) 2009 eXo Platform SAS.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.portal.pom.config.tasks;
import org.exoplatform.portal.config.NoSuchDataException;
import org.exoplatform.portal.pom.config.POMSession;
import org.exoplatform.portal.pom.config.POMTask;
import org.exoplatform.portal.pom.config.cache.CacheableDataTask;
import org.exoplatform.portal.pom.config.cache.DataAccessMode;
import org.gatein.mop.api.content.Customization;
/**
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
public abstract class PreferencesTask<S> {
/** . */
// private static final Object NULL_PREFS = new Object();
public static class GetContentId<S> extends PreferencesTask<S> implements POMTask<String> {
/** . */
private final String storageId;
public GetContentId(String storageId) {
this.storageId = storageId;
}
public String run(POMSession session) {
Customization<S> customization = (Customization<S>) session.findCustomizationById(storageId);
if (customization == null) {
throw new NoSuchDataException("Can not find " + storageId);
}
return customization.getContentId();
}
}
public static class Load<S> extends PreferencesTask<S> implements CacheableDataTask<String, S> {
/** . */
private final String storageId;
/** . */
private final Class<S> valueType;
public Load(String storageId, Class<S> valueType) {
this.storageId = storageId;
this.valueType = valueType;
}
public DataAccessMode getAccessMode() {
return DataAccessMode.READ;
}
public Class<S> getValueType() {
return valueType;
}
public String getKey() {
return storageId;
}
public S run(POMSession session) {
Customization<S> customization = (Customization<S>) session.findCustomizationById(storageId);
if (customization == null)
return null;
return customization.getVirtualState();
}
@Override
public String toString() {
return "PreferencesTask.Load[id=" + storageId + "]";
}
}
public static class Save<S> extends PreferencesTask<S> implements CacheableDataTask<String, Void> {
/** . */
private final String storageId;
/** . */
private final S prefs;
public Save(String storageId, S prefs) {
this.storageId = storageId;
this.prefs = prefs;
}
public DataAccessMode getAccessMode() {
return DataAccessMode.WRITE;
}
public Class<Void> getValueType() {
return Void.class;
}
public String getKey() {
return storageId;
}
public Void run(POMSession session) {
Customization<S> customization = (Customization<S>) session.findCustomizationById(storageId);
if (customization == null) {
throw new NoSuchDataException("Can not find " + storageId);
}
if (prefs != null) {
customization.setState(prefs);
} else {
customization.setState(null);
}
//
return null;
}
@Override
public String toString() {
return "PreferencesTask.Save[id=" + storageId + "]";
}
}
}