/*$************************************************************************************************
 **
 ** $Id: DatumAuthorityFactory.java 831 2006-05-01 00:27:23Z Desruisseaux $
 **
 ** $URL: http://svn.code.sf.net/p/geoapi/code/branches/2.0.x/geoapi/src/main/java/org/opengis/referencing/datum/DatumAuthorityFactory.java $
 **
 ** Copyright (C) 2003-2005 Open GIS Consortium, Inc.
 ** All Rights Reserved. http://www.opengis.org/legal/
 **
 *************************************************************************************************/
package org.opengis.referencing.datum;

// J2SE extensions
import javax.units.Unit;

// OpenGIS direct dependencies
import org.opengis.referencing.AuthorityFactory;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.NoSuchAuthorityCodeException;

// Annotations
import org.opengis.annotation.UML;
import org.opengis.annotation.Extension;
import static org.opengis.annotation.Obligation.*;
import static org.opengis.annotation.Specification.*;


/**
 * Creates {@linkplain Datum datum} objects using authority codes. External authorities are used to
 * manage definitions of objects used in this interface. The definitions of these objects are
 * referenced using code strings. A commonly used authority is EPSG,
 * which is also used in the GeoTIFF
 * standard.
 *
 * @version Implementation specification 1.0
 * @author Open Geospatial Consortium
 * @author Martin Desruisseaux (IRD)
 * @since GeoAPI 1.0
 *
 * @see org.opengis.referencing.cs.CSAuthorityFactory
 * @see org.opengis.referencing.crs.CRSAuthorityFactory
 */
@UML(identifier="CS_CoordinateSystemAuthorityFactory", specification=OGC_01009)
public interface DatumAuthorityFactory extends AuthorityFactory {
    /**
     * Returns an arbitrary {@linkplain Datum datum} from a code. If the datum type is know at
     * compile time, it is recommended to invoke the most precise method instead of this one
     * (for example  {@linkplain #createGeodeticDatum createGeodeticDatum}(code) 
     * instead of  createDatum(code)  if the caller know he is asking for a
     * {@linkplain GeodeticDatum geodetic datum}).
     *
     * @param  code Value allocated by authority.
     * @throws NoSuchAuthorityCodeException if the specified {@code code} was not found.
     * @throws FactoryException if the object creation failed for some other reason.
     *
     * @see #createGeodeticDatum
     * @see #createVerticalDatum
     * @see #createTemporalDatum
     */
    Datum createDatum(String code) throws FactoryException;

    /**
     * Creates a {@linkplain EngineeringDatum engineering datum} from a code.
     *
     * @param  code Value allocated by authority.
     * @throws NoSuchAuthorityCodeException if the specified {@code code} was not found.
     * @throws FactoryException if the object creation failed for some other reason.
     *
     * @see org.opengis.referencing.crs.CRSAuthorityFactory#createEngineeringCRS
     */
    EngineeringDatum createEngineeringDatum(String code) throws FactoryException;

    /**
     * Creates a {@linkplain ImageDatum image datum} from a code.
     *
     * @param  code Value allocated by authority.
     * @throws NoSuchAuthorityCodeException if the specified {@code code} was not found.
     * @throws FactoryException if the object creation failed for some other reason.
     *
     * @see org.opengis.referencing.crs.CRSAuthorityFactory#createImageCRS
     */
    ImageDatum createImageDatum(String code) throws FactoryException;

    /**
     * Creates a {@linkplain VerticalDatum vertical datum} from a code.
     *
     * @param  code Value allocated by authority.
     * @throws NoSuchAuthorityCodeException if the specified {@code code} was not found.
     * @throws FactoryException if the object creation failed for some other reason.
     *
     * @see org.opengis.referencing.crs.CRSAuthorityFactory#createVerticalCRS
     */
    @UML(identifier="createVerticalDatum", specification=OGC_01009)
    VerticalDatum createVerticalDatum(String code) throws FactoryException;

    /**
     * Creates a {@linkplain TemporalDatum temporal datum} from a code.
     *
     * @param  code Value allocated by authority.
     * @throws NoSuchAuthorityCodeException if the specified {@code code} was not found.
     * @throws FactoryException if the object creation failed for some other reason.
     *
     * @see org.opengis.referencing.crs.CRSAuthorityFactory#createTemporalCRS
     */
    TemporalDatum createTemporalDatum(String code) throws FactoryException;

    /**
     * Returns a {@linkplain GeodeticDatum geodetic datum} from a code.
     *
     * @param  code Value allocated by authority.
     * @throws NoSuchAuthorityCodeException if the specified {@code code} was not found.
     * @throws FactoryException if the object creation failed for some other reason.
     *
     * @see #createEllipsoid
     * @see #createPrimeMeridian
     * @see org.opengis.referencing.crs.CRSAuthorityFactory#createGeographicCRS
     * @see org.opengis.referencing.crs.CRSAuthorityFactory#createProjectedCRS
     */
    @UML(identifier="createHorizontalDatum", specification=OGC_01009)
    GeodeticDatum createGeodeticDatum(String code) throws FactoryException;

    /**
     * Returns an {@linkplain Ellipsoid ellipsoid} from a code.
     *
     * @param  code Value allocated by authority.
     * @throws NoSuchAuthorityCodeException if the specified {@code code} was not found.
     * @throws FactoryException if the object creation failed for some other reason.
     *
     * @see #createGeodeticDatum
     */
    @UML(identifier="createEllipsoid", specification=OGC_01009)
    Ellipsoid createEllipsoid(String code) throws FactoryException;

    /**
     * Returns a {@linkplain PrimeMeridian prime meridian} from a code.
     *
     * @param  code Value allocated by authority.
     * @throws NoSuchAuthorityCodeException if the specified {@code code} was not found.
     * @throws FactoryException if the object creation failed for some other reason.
     *
     * @see #createGeodeticDatum
     */
    @UML(identifier="createPrimeMeridian", specification=OGC_01009)
    PrimeMeridian createPrimeMeridian(String code) throws FactoryException;
}