/*
* org.openmicroscopy.shoola.env.data.RequestCallback
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2012 University of Dundee & Open Microscopy Environment.
* All rights reserved.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*------------------------------------------------------------------------------
*/
package org.openmicroscopy.shoola.env.data;
//Java imports
import java.util.List;
//Third-party libraries
//Application-internal dependencies
import omero.ServerError;
import omero.client;
import omero.cmd.CmdCallbackI;
import omero.cmd.DoAllRsp;
import omero.cmd.ERR;
import omero.cmd.HandlePrx;
import omero.cmd.OK;
import omero.cmd.Response;
import omero.cmd.Status;
import org.openmicroscopy.shoola.env.data.events.DSCallAdapter;
import Ice.Current;
/**
* A handle to a perform operation e.g. delete, move data between groups.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @since Beta4.4
*/
public class RequestCallback
extends CmdCallbackI
{
/** Helper reference to the adapter to notify. */
private DSCallAdapter adapter;
/** Flag indicating that the operation has finished. */
private boolean finished;
/** Flag indicating that the results have been submitted. */
private boolean submitted;
/**
* Handles the response of the data transfer.
*
* @return The transformation of the response.
*/
private Object handleResponse()
{
Response response = getResponse();
if (response == null) return Boolean.valueOf(false);
if (response instanceof DoAllRsp) {
List<Response> responses = ((DoAllRsp) response).responses;
if (responses.size() == 1) return responses.get(0);
return responses;
}
else if (response instanceof OK) return Boolean.valueOf(true);
else if (response instanceof ERR)
return new ProcessReport((ERR) response);
return null;
}
/**
* Creates a new instance.
*
* @param client Reference to the client.
* @param process The process to handle.
* @throws ServerError Thrown if an error occurred while initializing the
* call-back.
*/
RequestCallback(client client, final HandlePrx process)
throws ServerError
{
super(client, process);
}
/**
* Creates a new instance.
* @param ccb The CmdCallbackI to pass through
* @throws ServerError Thrown if an error occurred while initializing the
* call-back.
*/
RequestCallback(CmdCallbackI ccb)
throws ServerError
{
super(ccb);
}
/**
* Sets the adapter.
*
* @param adapter The value to set.
*/
public void setAdapter(DSCallAdapter adapter)
{
this.adapter = adapter;
if (finished && adapter != null && !submitted) {
Object ho = handleResponse();
if (ho != null) adapter.handleResult(ho);
try {
close(false);
} catch (Exception e) {}
}
}
/**
* Overridden to handle the end of the process.
* @see CmdCallbackI#onFinished(Response, Status, Current)
*/
public void onFinished(Response rsp, Status status, Current c)
{
super.onFinished(rsp, status, c);
finished = true;
if (adapter != null) {
submitted = true;
Object ho = handleResponse();
if (ho != null) adapter.handleResult(ho);
}
if (submitted) {
try {
close(true);
} catch (Exception e) {}
}
}
}