/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 * 
 *    (C) 2004-2008, Open Source Geospatial Foundation (OSGeo)
 *
 *    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.
 *
 *    This package contains documentation from OpenGIS specifications.
 *    OpenGIS consortium's work is fully acknowledged here.
 */
package org.geotools.metadata.iso.distribution;

import java.util.Collection;
import org.opengis.metadata.distribution.DigitalTransferOptions;
import org.opengis.metadata.distribution.Distribution;
import org.opengis.metadata.distribution.Distributor;
import org.opengis.metadata.distribution.Format;
import org.geotools.metadata.iso.MetadataEntity;


/**
 * Information about the distributor of and options for obtaining the resource.
 *
 *
 * @source $URL$
 * @version $Id$
 * @author Martin Desruisseaux (IRD)
 * @author Touraïvane
 *
 * @since 2.1
 */
public class DistributionImpl extends MetadataEntity implements Distribution {
    /**
     * Serial number for interoperability with different versions.
     */
    private static final long serialVersionUID = -5899590027802365131L;

    /**
     * Provides a description of the format of the data to be distributed.
     */
    private Collection<Format> distributionFormats;

    /**
     * Provides information about the distributor.
     */
    private Collection<Distributor> distributors;

    /**
     * Provides information about technical means and media by which a resource is obtained
     * from the distributor.
     */
    private Collection<DigitalTransferOptions> transferOptions;

    /**
     * Constructs an initially empty distribution.
     */
    public DistributionImpl() {
    }

    /**
     * Constructs a metadata entity initialized with the values from the specified metadata.
     *
     * @since 2.4
     */
    public DistributionImpl(final Distribution source) {
        super(source);
    }

    /**
     * Provides a description of the format of the data to be distributed.
     */
    public synchronized Collection<Format> getDistributionFormats() {
        return (distributionFormats = nonNullCollection(distributionFormats, Format.class));
    }

    /**
     * Set a description of the format of the data to be distributed.
     */
    public synchronized void setDistributionFormats(final Collection<? extends Format> newValues) {
        distributionFormats = copyCollection(newValues, distributionFormats, Format.class);
    }

    /**
     * Provides information about the distributor.
     */
    public synchronized Collection<Distributor> getDistributors() {
        return (distributors = nonNullCollection(distributors, Distributor.class));
    }

    /**
     * Set information about the distributor.
     */
    public synchronized void setDistributors(final Collection<? extends Distributor> newValues) {
        distributors = copyCollection(newValues, distributors, Distributor.class);
    }

    /**
     * Provides information about technical means and media by which a resource is obtained
     * from the distributor.
     */
    public synchronized Collection<DigitalTransferOptions> getTransferOptions() {
        return (transferOptions = nonNullCollection(transferOptions, DigitalTransferOptions.class));
    }

    /**
     * Set information about technical means and media by which a resource is obtained
     * from the distributor.
     */
    public synchronized void setTransferOptions(
            final Collection<? extends DigitalTransferOptions> newValues)
    {
        transferOptions = copyCollection(newValues, transferOptions, DigitalTransferOptions.class);
    }
}