org.kalypso.model.wspm.tuhh.core.profile.TUHHInterpolationHandler.java Source code

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Here is the source code for org.kalypso.model.wspm.tuhh.core.profile.TUHHInterpolationHandler.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 *
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 *
 *  and
 *
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 *
 *  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; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  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.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *
 *  ---------------------------------------------------------------------------*/
package org.kalypso.model.wspm.tuhh.core.profile;

import java.math.BigDecimal;

import org.apache.commons.lang3.ArrayUtils;
import org.kalypso.model.wspm.core.IWspmConstants;
import org.kalypso.model.wspm.tuhh.core.IWspmTuhhConstants;
import org.kalypso.observation.result.IInterpolationHandler;
import org.kalypso.observation.result.IRecord;
import org.kalypso.observation.result.TupleResult;

/**
 * @author kimwerner
 */
public class TUHHInterpolationHandler implements IInterpolationHandler {
    /* Get interpolated value during interpolation */
    private static final String[] INTERPOLATION_IDS = new String[] { IWspmConstants.POINT_PROPERTY_BREITE,
            IWspmConstants.POINT_PROPERTY_HOEHE, IWspmConstants.POINT_PROPERTY_HOCHWERT,
            IWspmConstants.POINT_PROPERTY_RECHTSWERT, IWspmTuhhConstants.POINT_PROPERTY_OBERKANTEBRUECKE,
            IWspmTuhhConstants.POINT_PROPERTY_UNTERKANTEBRUECKE, IWspmTuhhConstants.POINT_PROPERTY_OBERKANTEWEHR };

    /* Gets value of first point during interpolation */
    private static final String[] CONSTANT_IDS = new String[] { IWspmConstants.POINT_PROPERTY_BEWUCHS_AX,
            IWspmConstants.POINT_PROPERTY_BEWUCHS_AY, IWspmConstants.POINT_PROPERTY_BEWUCHS_DP,
            IWspmTuhhConstants.POINT_PROPERTY_RAUHEIT_KS, IWspmTuhhConstants.POINT_PROPERTY_RAUHEIT_KST };

    @Override
    public String getInterpolationComponent() {
        return IWspmConstants.POINT_PROPERTY_BREITE;
    }

    @Override
    public boolean doInterpolation(final TupleResult result, final IRecord record, final int index,
            final double distance) {
        if (result == null || record == null || index < 0 || index > result.size() - 2)
            return false;

        try {
            final IRecord previous = result.get(index);
            final IRecord next = result.get(index + 1);
            for (final String id : INTERPOLATION_IDS) {
                final int i = result.indexOfComponent(id);
                if (i < 0) {
                    continue;
                }

                final Object v1 = previous.getValue(i);
                final Object v2 = next.getValue(i);
                final Object interp = interpolateValues(v1, v2, distance);
                record.setValue(i, interp);
            }

            for (final String id : CONSTANT_IDS) {
                final int i = result.indexOfComponent(id);
                if (i < 0) {
                    continue;
                }
                record.setValue(i, previous.getValue(i));
            }
            return true;
        } catch (final Exception e) {
            e.printStackTrace();
            throw new ArithmeticException(e.getLocalizedMessage());
        }
    }

    private Object interpolateValues(final Object v1, final Object v2, final double distance) {
        if (!(v1 instanceof Number) || !(v2 instanceof Number))
            return null;

        final Number n1 = (Number) v1;
        final Number n2 = (Number) v2;

        final double d1 = n1.doubleValue();
        final double d2 = n2.doubleValue();

        final double result = d1 + (d2 - d1) * distance;
        return createValue(v1, result);
    }

    private Object createValue(final Object template, final double value) {
        if (template.getClass() == Double.class)
            return Double.valueOf(value);
        if (template.getClass() == BigDecimal.class)
            return BigDecimal.valueOf(value).setScale(((BigDecimal) template).scale(), BigDecimal.ROUND_HALF_UP);
        if (template.getClass() == Integer.class)
            return Integer.valueOf((int) Math.round(value));
        return template;
    }

    @Override
    public String[] getExtrapolationsIDs() {
        return ArrayUtils.addAll(INTERPOLATION_IDS, CONSTANT_IDS);
    }
}