/*-
* Copyright 2015 Diamond Light Source Ltd.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package uk.ac.diamond.scisoft.analysis.processing.test.examples;
import org.eclipse.dawnsci.analysis.api.processing.OperationData;
import org.eclipse.dawnsci.analysis.api.processing.OperationException;
import org.eclipse.dawnsci.analysis.api.processing.OperationRank;
import org.eclipse.dawnsci.analysis.api.processing.model.EmptyModel;
import org.eclipse.dawnsci.analysis.dataset.operations.AbstractOperation;
import org.eclipse.dawnsci.analysis.dataset.slicer.SliceFromSeriesMetadata;
import org.eclipse.january.IMonitor;
import org.eclipse.january.dataset.Dataset;
import org.eclipse.january.dataset.DatasetUtils;
import org.eclipse.january.dataset.IDataset;
import org.eclipse.january.dataset.ILazyDataset;
/**
* Simple example of an operation which sums all the images in a data series
*/
public class ExampleSumOperation extends AbstractOperation<EmptyModel, OperationData> {
private Dataset sum;
private ILazyDataset parent;
private int counter;
protected OperationData process(IDataset input, IMonitor monitor) throws OperationException {
//get series metadata (will not be null), to check we are from the same parent
//and whether we have hit the final image
SliceFromSeriesMetadata ssm = getSliceSeriesMetadata(input);
if (parent != ssm.getParent()) {
parent = ssm.getParent();
sum = null;
counter = 0;
}
if (sum == null) {
sum = DatasetUtils.convertToDataset(input.clone());
} else {
sum.iadd(input);
}
counter++;
if (counter == ssm.getTotalSlices()) {
IDataset out = sum;
sum = null;
counter = 0;
SliceFromSeriesMetadata outsmm = ssm.clone();
for (int i = 0; i < ssm.getParent().getRank(); i++) {
if (!outsmm.isDataDimension(i)) outsmm.reducedDimensionToSingular(i);
}
out.setMetadata(outsmm);
return new OperationData(out);
}
return null;
}
@Override
public String getId() {
return "uk.ac.diamond.scisoft.analysis.processing.test.examples.ExampleSumOperation";
}
@Override
public OperationRank getInputRank() {
return OperationRank.TWO;
}
@Override
public OperationRank getOutputRank() {
return OperationRank.TWO;
}
}