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 * Copyright (c) 2016 The University of Reading
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University of Reading, nor the names of the
 *    authors or contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package uk.ac.rdg.resc.edal.covjson;

import java.io.IOException;
import java.io.OutputStream;
import java.text.DecimalFormat;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import uk.ac.rdg.resc.edal.covjson.writers.Coverage;
import uk.ac.rdg.resc.edal.exceptions.EdalException;
import uk.ac.rdg.resc.edal.feature.Feature;

/**
 * 
 * @author Maik Riechert
 *
 */
public class CoverageJsonConverterImpl implements CoverageJsonConverter {
    private final Map<String, DecimalFormat> field2dp;

    public CoverageJsonConverterImpl() {
        this(null);
    }

    public CoverageJsonConverterImpl(Map<String, DecimalFormat> field2dp) {
        if (field2dp == null) {
            this.field2dp = new HashMap<>();
        } else {
            this.field2dp = field2dp;
        }
    }

    @Override
    public void convertFeatureToJson(OutputStream os, Feature<?> feature) {
        StreamingEncoder encoder;
        try {
            encoder = new JsonStreamingEncoder(os, field2dp);
            CoverageJsonWriter writer = new CoverageJsonWriter(encoder);
            writer.write(feature);
        } catch (IOException e) {
            throw new EdalException("Error writing CoverageJSON", e);
        }
    }

    @Override
    public void convertFeaturesToJson(OutputStream os, Collection<? extends Feature<?>> features) {
        StreamingEncoder encoder;
        try {
            encoder = new JsonStreamingEncoder(os, field2dp);
            CoverageJsonWriter writer = new CoverageJsonWriter(encoder);
            writer.write(features);
        } catch (IOException e) {
            throw new EdalException("Error writing CoverageJSON", e);
        }
    }

    @Override
    public void checkFeatureSupported(Feature<?> feature) {
        // wrapping a Feature into a Coverage object will throw exceptions if
        // unsupported
        new Coverage(feature);
    }

    @Override
    public void checkFeaturesSupported(Collection<? extends Feature<?>> features) {
        for (Feature<?> feature : features) {
            new Coverage(feature);
        }
    }
}
