/*
* 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.application.gadget;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import org.apache.shindig.common.uri.Uri;
import org.apache.shindig.gadgets.spec.GadgetSpec;
import org.apache.shindig.gadgets.spec.ModulePrefs;
import org.exoplatform.application.gadget.impl.GadgetDefinition;
import org.gatein.common.logging.Logger;
import org.gatein.common.logging.LoggerFactory;
/**
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
public abstract class GadgetImporter {
/** . */
protected static final Logger log = LoggerFactory.getLogger(GadgetImporter.class);
/** The gadget name as seen by GateIn. */
private String gadgetName;
/** The gadget uri. */
private String gadgetURI;
protected GadgetImporter(String gadgetName, String gadgetURI) {
this.gadgetName = gadgetName;
this.gadgetURI = gadgetURI;
}
public String getGadgetName() {
return gadgetName;
}
public String getGadgetURI() {
return gadgetURI;
}
protected abstract byte[] getGadgetBytes(String gadgetURI) throws IOException;
protected abstract String getGadgetURL();
protected abstract void process(String gadgetURI, GadgetDefinition def) throws Exception;
protected abstract void processMetadata(ModulePrefs prefs, GadgetDefinition def);
public void doImport(GadgetDefinition def) throws Exception {
// Get bytes
byte[] bytes = getGadgetBytes(gadgetURI);
if (bytes == null) {
throw new IOException("Cannot import gadget " + gadgetURI + " because its data could not be found");
}
//
process(gadgetURI, def);
String encoding = EncodingDetector.detect(new ByteArrayInputStream(bytes));
String gadget = new String(bytes, encoding);
String gadgetURL = getGadgetURL();
GadgetSpec spec = new GadgetSpec(Uri.parse(gadgetURL), gadget);
ModulePrefs prefs = spec.getModulePrefs();
processMetadata(prefs, def);
}
@Override
public String toString() {
return getClass().getSimpleName() + "[name=" + getGadgetName() + ",path=" + getGadgetURI() + "]";
}
}