/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2011, Geomatys
*
* This library 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;
* version 2.1 of the License.
*
* This library 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.
*/
package org.geotoolkit.processing.vector.startoffset;
import org.geotoolkit.data.FeatureCollection;
import org.geotoolkit.data.memory.GenericStartIndexFeatureIterator;
import org.geotoolkit.parameter.Parameters;
import org.geotoolkit.processing.AbstractProcess;
import org.geotoolkit.processing.vector.VectorDescriptor;
import org.opengis.parameter.ParameterValueGroup;
import static org.geotoolkit.parameter.Parameters.*;
/**
* Start FeatureCollection iteration at given offset
* @see org.geotoolkit.data.memory.GenericSortByFeatureIterator
* @author Quentin Boileau
* @module
*/
public class StartOffsetProcess extends AbstractProcess {
/**
* Default constructor
*/
public StartOffsetProcess(final ParameterValueGroup input) {
super(StartOffsetDescriptor.INSTANCE,input);
}
/**
* {@inheritDoc }
*/
@Override
protected void execute() {
final FeatureCollection inputFeatureList = Parameters.value(VectorDescriptor.FEATURE_IN, inputParameters);
final int offset = Parameters.value(StartOffsetDescriptor.OFFSET_IN, inputParameters);
final FeatureCollection resultFeatureList = GenericStartIndexFeatureIterator.wrap(inputFeatureList, offset);
getOrCreate(VectorDescriptor.FEATURE_OUT, outputParameters).setValue(resultFeatureList);
}
}