/*
 * #%L
 * org.gitools.matrix
 * %%
 * Copyright (C) 2013 - 2016 Universitat Pompeu Fabra - Biomedical Genomics group
 * %%
 * 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 3 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, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */
package org.gitools.matrix.transform;

import org.gitools.api.matrix.ConfigurableTransformFunction;
import org.gitools.api.matrix.IMatrixPosition;
import org.gitools.matrix.transform.parameters.DoubleParameter;

public class FillEmptyFunction extends ConfigurableTransformFunction {

    public static final String REPLACEMENT_PARAM = "Replacement";
    private DoubleParameter replaceValue;

    public FillEmptyFunction() {
        super("Fill empty", "Fill empty cells with a defined value");
    }

    @Override
    @SuppressWarnings("unchecked")
    public FillEmptyFunction createNew() {
        return new FillEmptyFunction();
    }

    @Override
    protected void createDefaultParameters() {
        replaceValue = new DoubleParameter();
        replaceValue.setParameterValue(1.0);
        replaceValue.setDescription("The value to replace the empty values with");
        addParameter(REPLACEMENT_PARAM, replaceValue);
    }

    @Override
    public String getName() {
        return name + " with " + replaceValue.getParameterValue();
    }

    @Override
    public Double apply(Double value, IMatrixPosition position) {
        if (value == null) {
            return replaceValue.getParameterValue();
        }
        return value;
    }
}