eu.esdihumboldt.hale.adv.merge.AdVMeasurementMigrator.java Source code

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Here is the source code for eu.esdihumboldt.hale.adv.merge.AdVMeasurementMigrator.java

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/*
 * Copyright (c) 2018 wetransform GmbH
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     wetransform GmbH <http://www.wetransform.to>
 */

package eu.esdihumboldt.hale.adv.merge;

import java.text.MessageFormat;

import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ListMultimap;

import eu.esdihumboldt.hale.common.align.merge.MergeIndex;
import eu.esdihumboldt.hale.common.align.merge.impl.DefaultMergeCellMigrator;
import eu.esdihumboldt.hale.common.align.migrate.AlignmentMigration;
import eu.esdihumboldt.hale.common.align.model.Cell;
import eu.esdihumboldt.hale.common.align.model.CellUtil;
import eu.esdihumboldt.hale.common.align.model.EntityDefinition;
import eu.esdihumboldt.hale.common.align.model.MutableCell;
import eu.esdihumboldt.hale.common.align.model.ParameterValue;
import eu.esdihumboldt.hale.common.align.model.functions.AssignFunction;
import eu.esdihumboldt.hale.common.core.report.SimpleLog;

/**
 * Migrator for custom function that converts AdV units of measurement to UCUM.
 * 
 * @author Simon Templer
 */
public class AdVMeasurementMigrator extends DefaultMergeCellMigrator {

    private String convertCode(String uom, SimpleLog log) {
        // this method reflects the behavior of the custom function

        // Mapping auf UCUM
        switch (uom) {
        case "urn:adv:uom:m2":
            return "m2";
        case "urn:adv:uom:m":
            return "m";
        case "urn:adv:uom:km":
            return "km";
        }

        // also accept if the code is already an UCUM symbol:
        switch (uom) {
        case "m":
        case "m2":
        case "km":
            return uom;
        }

        // Transformations-Warnung falls kein Mapping auf UCUM vorhanden
        log.warn(MessageFormat.format("Unknown UCUM representation for unit of measurment {0}, code was used as-is",
                uom));
        return uom;
    }

    @Override
    protected void mergeSource(MutableCell cell, String sourceName, EntityDefinition source, Cell match,
            Cell originalCell, SimpleLog log, Void context, AlignmentMigration migration, MergeIndex mergeIndex) {

        if (AssignFunction.ID_BOUND.equals(match.getTransformationIdentifier())) {
            // get value used in bound assign
            String value = CellUtil.getFirstParameter(match, AssignFunction.PARAMETER_VALUE).as(String.class);

            // convert value according to custom function
            value = convertCode(value, log);

            // configure cell
            cell.setTransformationIdentifier(AssignFunction.ID_BOUND);
            cell.setSource(ArrayListMultimap.create(match.getSource()));
            ListMultimap<String, ParameterValue> params = ArrayListMultimap.create();
            params.put(AssignFunction.PARAMETER_VALUE, new ParameterValue(value));
            cell.setTransformationParameters(params);

            return;
        }

        super.mergeSource(cell, sourceName, source, match, originalCell, log, context, migration, mergeIndex);
    }

}