/*
* org.openmicroscopy.shoola.env.data.views.calls.PixelsDataLoader
*
*------------------------------------------------------------------------------
* Copyright (C) 2006-2007 University of Dundee. 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.views.calls;
//Java imports
//Third-party libraries
//Application-internal dependencies
import org.openmicroscopy.shoola.env.data.OmeroImageService;
import omero.gateway.SecurityContext;
import org.openmicroscopy.shoola.env.data.views.BatchCall;
import org.openmicroscopy.shoola.env.data.views.BatchCallTree;
/**
* Command to retrieve data related to the specified set of pixels.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @author Donald MacDonald
* <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a>
* @version 3.0
* <small>
* (<b>Internal version:</b> $Revision: $Date: $)
* </small>
* @since OME3.0
*/
public class PixelsDataLoader
extends BatchCallTree
{
/** Flag indicating to load the pixels set. */
public static final int SET = 1;
/** Flag indicating to load the pixels' size. */
public static final int SIZE = 2;
/** The id of the pixels set this loader is for. */
private long pixelsID;
/** Result of the call. */
private Object result;
/** Loads the specified tree. */
private BatchCall loadCall;
/** The security context.*/
private SecurityContext ctx;
/**
* Creates a {@link BatchCall} to load the pixels set.
*
* @return See above.
*/
private BatchCall makePixelsBatchCall()
{
return new BatchCall("Loading pixels: ") {
public void doCall() throws Exception
{
OmeroImageService rds = context.getImageService();
result = rds.loadPixels(ctx, pixelsID);
}
};
}
/**
* Creates a {@link BatchCall} to check if the pixels is a big image.
*
* @return See above.
*/
private BatchCall makePixelsSizeBatchCall()
{
return new BatchCall("Loading pixels: ") {
public void doCall() throws Exception
{
OmeroImageService rds = context.getImageService();
result = rds.isLargeImage(ctx, pixelsID);
}
};
}
/**
* Adds a {@link BatchCall} to the tree.
* @see BatchCallTree#buildTree()
*/
protected void buildTree() { add(loadCall); }
/**
* Returns the result.
*
* @see BatchCallTree#getResult()
*/
protected Object getResult() { return result; }
/**
* Creates the call corresponding to the passed index.
*
* @param ctx The security context.
* @param pixelsID The id of the pixels set.
* @param index One of the constants defined by this class.
*/
public PixelsDataLoader(SecurityContext ctx, long pixelsID, int index)
{
this.pixelsID = pixelsID;
this.ctx = ctx;
switch (index) {
case SET:
loadCall = makePixelsBatchCall();
break;
case SIZE:
loadCall = makePixelsSizeBatchCall();
break;
default:
throw new IllegalArgumentException("Index not supported.");
}
}
}