    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/crs/configuration/AbstractCRSProvider.java $
    002    /*----------------------------------------------------------------------------
    003     This file is part of deegree, http://deegree.org/
    004     Copyright (C) 2001-2009 by:
    005     Department of Geography, University of Bonn
    006     and
    007     lat/lon GmbH
    008
    009     This library is free software; you can redistribute it and/or modify it under
    010     the terms of the GNU Lesser General Public License as published by the Free
    011     Software Foundation; either version 2.1 of the License, or (at your option)
    012     any later version.
    013     This library is distributed in the hope that it will be useful, but WITHOUT
    014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
    016     details.
    017     You should have received a copy of the GNU Lesser General Public License
    018     along with this library; if not, write to the Free Software Foundation, Inc.,
    019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    020
    021     Contact information:
    022
    023     lat/lon GmbH
    024     Aennchenstr. 19, 53177 Bonn
    025     Germany
    026     http://lat-lon.de/
    027
    028     Department of Geography, University of Bonn
    029     Prof. Dr. Klaus Greve
    030     Postfach 1147, 53001 Bonn
    031     Germany
    032     http://www.geographie.uni-bonn.de/deegree/
    033
    034     e-mail: info@deegree.org
    035     ----------------------------------------------------------------------------*/
    036
    037    package org.deegree.crs.configuration;
    038
    039    import static org.deegree.crs.utilities.MappingUtils.matchEPSGString;
    040
    041    import java.io.IOException;
    042    import java.lang.reflect.Constructor;
    043    import java.lang.reflect.InvocationTargetException;
    044    import java.util.HashMap;
    045    import java.util.Map;
    046    import java.util.Properties;
    047
    048    import org.deegree.crs.Identifiable;
    049    import org.deegree.crs.components.GeodeticDatum;
    050    import org.deegree.crs.configuration.resources.CRSResource;
    051    import org.deegree.crs.coordinatesystems.CompoundCRS;
    052    import org.deegree.crs.coordinatesystems.CoordinateSystem;
    053    import org.deegree.crs.coordinatesystems.GeographicCRS;
    054    import org.deegree.crs.coordinatesystems.ProjectedCRS;
    055    import org.deegree.crs.exceptions.CRSConfigurationException;
    056    import org.deegree.crs.projections.azimuthal.LambertAzimuthalEqualArea;
    057    import org.deegree.crs.projections.azimuthal.StereographicAlternative;
    058    import org.deegree.crs.projections.azimuthal.StereographicAzimuthal;
    059    import org.deegree.crs.projections.conic.LambertConformalConic;
    060    import org.deegree.crs.projections.cylindric.TransverseMercator;
    061    import org.deegree.crs.transformations.Transformation;
    062    import org.deegree.crs.transformations.coordinate.GeocentricTransform;
    063    import org.deegree.crs.transformations.coordinate.NotSupportedTransformation;
    064    import org.deegree.crs.transformations.helmert.Helmert;
    065    import org.deegree.crs.transformations.polynomial.PolynomialTransformation;
    066    import org.deegree.framework.log.ILogger;
    067    import org.deegree.framework.log.LoggerFactory;
    068    import org.deegree.i18n.Messages;
    069
    070    /**
    071     * add class documentation here.
    072     *
    073     * @author <a href="mailto:bezema@lat-lon.de">Rutger Bezema</a>
    074     *
    075     * @author last edited by: $Author: rbezema $
    076     *
    077     * @version $Revision: 23328 $, $Date: 2010-03-30 17:40:30 +0200 (Di, 30. Mär 2010) $
    078     * @param <T>
    079     *            the type of object the parse method awaits.
    080     *
    081     */
    082    public abstract class AbstractCRSProvider<T> implements CRSProvider {
    083
    084        private static ILogger LOG = LoggerFactory.getLogger( AbstractCRSProvider.class );
    085
    086        private Map<String, Identifiable> cachedIdentifiables = new HashMap<String, Identifiable>( 42124 );
    087
    088        private CRSResource<T> resolver;
    089
    090        /**
    091         * @param <K>
    092         * @param properties
    093         * @param subType
    094         * @param defaultResolver
    095         */
    096        @SuppressWarnings("unchecked")
    097        public <K extends CRSResource<T>> AbstractCRSProvider( Properties properties, Class<K> subType,
    098                                                               CRSResource<T> defaultResolver ) {
    099            if ( properties == null ) {
    100                throw new IllegalArgumentException( "The properties may not be null." );
    101            }
    102            String className = properties.getProperty( "CRS_RESOURCE" );
    103            if ( className == null || "".equals( className.trim() ) ) {
    104                if ( defaultResolver != null ) {
    105                    LOG.logWarning( "Found no configured CRS-Resource to use, trying default: "
    106                                    + defaultResolver.getClass().getCanonicalName() );
    107                    resolver = defaultResolver;
    108                } else {
    109                    LOG.logDebug( "Found no configured CRS-Resource and no default crs resource supplied, hoping for the set method." );
    110                }
    111            } else {
    112                try {
    113                    Class<?> tc = null;
    114                    if ( subType == null ) {
    115                        StringBuilder sb = new StringBuilder( "No subtype suplied trying to use " );
    116                        if ( defaultResolver != null ) {
    117                            sb.append( " the default resolver: " );
    118                            tc = defaultResolver.getClass();
    119                        } else {
    120                            tc = CRSResource.class;
    121                        }
    122                        sb.append( tc.getCanonicalName() ).append( " to create a subtype from. " );
    123                        LOG.logWarning( sb.toString() );
    124                    } else {
    125                        tc = Class.forName( subType.getName() );
    126                    }
    127                    // use reflection to instantiate the configured provider.
    128                    Class<?> t = Class.forName( className );
    129                    t.asSubclass( tc );
    130                    LOG.logDebug( "Trying to load configured CRS provider from classname: " + className );
    131                    Constructor<?> constructor = t.getConstructor( this.getClass(), Properties.class );
    132                    if ( constructor == null ) {
    133                        LOG.logError( "No constructor ( " + this.getClass() + ", Properties.class) found in class:"
    134                                      + className );
    135                    } else {
    136                        resolver = (K) constructor.newInstance( this, properties );
    137                    }
    138                } catch ( InstantiationException e ) {
    139                    LOG.logError( Messages.getMessage( "CRS_CONFIG_INSTANTIATION_ERROR", className, e.getMessage() ) );
    140                } catch ( IllegalAccessException e ) {
    141                    LOG.logError( Messages.getMessage( "CRS_CONFIG_INSTANTIATION_ERROR", className, e.getMessage() ), e );
    142                } catch ( ClassNotFoundException e ) {
    143                    LOG.logError( Messages.getMessage( "CRS_CONFIG_INSTANTIATION_ERROR", className, e.getMessage() ), e );
    144                } catch ( SecurityException e ) {
    145                    LOG.logError( Messages.getMessage( "CRS_CONFIG_INSTANTIATION_ERROR", className, e.getMessage() ), e );
    146                } catch ( NoSuchMethodException e ) {
    147                    LOG.logError( Messages.getMessage( "CRS_CONFIG_INSTANTIATION_ERROR", className, e.getMessage() ), e );
    148                } catch ( IllegalArgumentException e ) {
    149                    LOG.logError( Messages.getMessage( "CRS_CONFIG_INSTANTIATION_ERROR", className, e.getMessage() ), e );
    150                } catch ( InvocationTargetException e ) {
    151                    LOG.logError( Messages.getMessage( "CRS_CONFIG_INSTANTIATION_ERROR", className, e.getMessage() ), e );
    152                } catch ( Throwable t ) {
    153                    LOG.logError( Messages.getMessage( "CRS_CONFIG_INSTANTIATION_ERROR", className, t.getMessage() ), t );
    154                } finally {
    155                    if ( resolver == null ) {
    156                        LOG.logInfo( "The configured class: " + className + " was not instantiated." );
    157                        if ( defaultResolver != null ) {
    158                            LOG.logInfo( "Trying to instantiate the default resolver: "
    159                                         + defaultResolver.getClass().getCanonicalName() );
    160                            resolver = defaultResolver;
    161                        } else {
    162                            LOG.logWarning( "No default crs resource supplied, hoping for the set method." );
    163                        }
    164                    }
    165                }
    166            }
    167        }
    168
    169        public CoordinateSystem getCRSByID( String id )
    170                                throws CRSConfigurationException {
    171            if ( resolver == null ) {
    172                throw new CRSConfigurationException( "No resolver initialized, this may not be." );
    173            }
    174            CoordinateSystem result = null;
    175            if ( id != null && !"".equals( id.trim() ) ) {
    176                LOG.logDebug( "Trying to load crs with id: " + id + " from cache." );
    177                if ( LOG.isDebug() ) {
    178                    LOG.logDebug( cachedIdentifiables.keySet().toString() );
    179                }
    180                if ( cachedIdentifiables.containsKey( id ) ) {
    181                    Identifiable r = cachedIdentifiables.get( id );
    182                    LOG.logDebug( "Found Identifiable: " + r.getIdAndName() + " from given id: " + id );
    183                    if ( !( r instanceof CoordinateSystem ) ) {
    184                        LOG.logError( "Found Identifiable: " + r.getIdAndName()
    185                                      + " but it is not a coordinate system, your db is inconsistend return null." );
    186                        r = null;
    187                    }
    188                    result = (CoordinateSystem) r;
    189                }
    190                if ( result == null ) {
    191                    LOG.logDebug( "No crs with id: " + id + " found in cache." );
    192                    try {
    193                        result = parseCoordinateSystem( resolver.getURIAsType( id ) );
    194                    } catch ( IOException e ) {
    195                        LOG.logDebug( e.getLocalizedMessage(), e );
    196                        throw new CRSConfigurationException( e );
    197                    }
    198                    if ( result != null ) {
    199                        GeographicCRS t = null;
    200                        if ( result.getType() == CoordinateSystem.COMPOUND_CRS ) {
    201                            if ( ( (CompoundCRS) result ).getUnderlyingCRS().getType() == CoordinateSystem.PROJECTED_CRS ) {
    202                                t = ( (ProjectedCRS) ( (CompoundCRS) result ).getUnderlyingCRS() ).getGeographicCRS();
    203                            } else if ( ( (CompoundCRS) result ).getUnderlyingCRS().getType() == CoordinateSystem.GEOGRAPHIC_CRS ) {
    204                                t = (GeographicCRS) ( (CompoundCRS) result ).getUnderlyingCRS();
    205                            } else {
    206                                LOG.logWarning( "Wgs84 Transformation lookup is currently only supported for GeographicCRS-chains." );
    207                            }
    208                        } else if ( result.getType() == CoordinateSystem.PROJECTED_CRS ) {
    209                            t = ( (ProjectedCRS) result ).getGeographicCRS();
    210                        } else if ( result.getType() == CoordinateSystem.GEOGRAPHIC_CRS ) {
    211                            t = (GeographicCRS) result;
    212                        } else {
    213                            LOG.logWarning( "Wgs84 Transformation lookup is currently only supported for GeographicCRS-chains." );
    214                        }
    215                        if ( t != null ) {
    216                            Helmert wgs84 = t.getGeodeticDatum().getWGS84Conversion();
    217                            if ( wgs84 == null ) {
    218                                wgs84 = resolver.getWGS84Transformation( t );
    219                            }
    220                            if ( wgs84 != null ) {
    221                                if ( wgs84.getSourceCRS() == null ) {
    222                                    wgs84.setSourceCRS( t );
    223                                    addIdToCache( wgs84, true );
    224                                }
    225                                GeodeticDatum datum = result.getGeodeticDatum();
    226                                if ( datum != null ) {
    227                                    datum.setToWGS84( wgs84 );
    228                                    // update the cache as well
    229                                    addIdToCache( datum, true );
    230                                }
    231
    232                            }
    233                        }
    234                    }
    235                }
    236            }
    237            if ( result == null ) {
    238                LOG.logDebug( "The id: "
    239                              + id
    240                              + " could not be mapped to a valid deegree-crs, currently projectedCRS, geographicCRS, compoundCRS and geocentricCRS are supported." );
    241            } else {
    242                /**
    243                 * Adding the used underlying crs's to the cache.
    244                 */
    245                addIdToCache( result, false );
    246                if ( result.getType() == CoordinateSystem.COMPOUND_CRS ) {
    247                    addIdToCache( ( (CompoundCRS) result ).getUnderlyingCRS(), false );
    248                    if ( ( (CompoundCRS) result ).getUnderlyingCRS().getType() == CoordinateSystem.PROJECTED_CRS ) {
    249                        addIdToCache( ( (ProjectedCRS) ( (CompoundCRS) result ).getUnderlyingCRS() ).getGeographicCRS(),
    250                                      false );
    251                    }
    252                } else if ( result.getType() == CoordinateSystem.PROJECTED_CRS ) {
    253                    addIdToCache( ( (ProjectedCRS) result ).getGeographicCRS(), false );
    254                }
    255
    256            }
    257            return result;
    258
    259        }
    260
    261        /**
    262         * Set the resolver to the given resolver.
    263         *
    264         * @param newResolver
    265         */
    266        public void setResolver( CRSResource<T> newResolver ) {
    267            if ( LOG.isDebug() ) {
    268                LOG.logDebug( "The following resolver was set: " + newResolver + ", it will replace the old resolver: "
    269                              + this.resolver );
    270            }
    271            this.resolver = newResolver;
    272        }
    273
    274        /**
    275         * @return the resolver for a type.
    276         */
    277        protected CRSResource<T> getResolver() {
    278            return resolver;
    279        }
    280
    281        /**
    282         * @param crsDefinition
    283         *            containing the definition of a crs in the understood type.
    284         * @return a {@link CoordinateSystem} instance initialized with values from the given type definition fragment or
    285         *         <code>null</code> if the given crsDefinition is <code>null</code> or not known.
    286         * @throws CRSConfigurationException
    287         *             if an error was found in the given crsDefintion
    288         */
    289        protected abstract CoordinateSystem parseCoordinateSystem( T crsDefinition )
    290                                throws CRSConfigurationException;
    291
    292        /**
    293         * @param transformationDefinition
    294         *            containing the parameters needed to build a Transformation.
    295         * @return a {@link Transformation} instance initialized with values from the given definition or <code>null</code>
    296         *         if the given transformationDefintion is <code>null</code>. If the parsed transformation is not supported
    297         *         or a {@link NotSupportedTransformation} will be returned.
    298         * @throws CRSConfigurationException
    299         *             if an error was found in the given crsDefintion
    300         */
    301        public abstract Transformation parseTransformation( T transformationDefinition )
    302                                throws CRSConfigurationException;
    303
    304        /**
    305         * Clears the cache.
    306         */
    307        public void clearCache() {
    308            try {
    309                synchronized ( cachedIdentifiables ) {
    310                    cachedIdentifiables.clear();
    311                    cachedIdentifiables.notifyAll();
    312                }
    313            } catch ( Exception e ) {
    314                LOG.logWarning( "The clearing of the cache could not be forefullfilled because: " + e.getLocalizedMessage() );
    315            }
    316        }
    317
    318        /**
    319         * The id are what they are, not trimming 'upcasing' or other modifications will be done in this method.
    320         *
    321         * @param expectedType
    322         *            The class of type T which is expected.
    323         * @param <V>
    324         *            the type to cast to if the casting fails, null will be returned.
    325         * @param ids
    326         *            to search the cache for
    327         * @return the {@link Identifiable} of the first matching id or <code>null</code> if it was not found.
    328         */
    329        public <V extends Identifiable> V getCachedIdentifiable( Class<V> expectedType, Identifiable ids ) {
    330            if ( ids == null ) {
    331                return null;
    332            }
    333            return getCachedIdentifiable( expectedType, ids.getIdentifiers() );
    334        }
    335
    336        /**
    337         * The id are what they are, not trimming 'upcasing' or other modifications will be done in this method.
    338         *
    339         * @param expectedType
    340         *            The class of type T which is expected.
    341         * @param <V>
    342         *            the type to cast to if the casting fails, null will be returned.
    343         * @param ids
    344         *            to search the cache for
    345         * @return the {@link Identifiable} of the first matching id or <code>null</code> if it was not found.
    346         */
    347        public <V extends Identifiable> V getCachedIdentifiable( Class<V> expectedType, String[] ids ) {
    348            if ( ids == null || ids.length == 0 ) {
    349                return null;
    350            }
    351            V result = null;
    352            for ( int i = 0; i < ids.length && result == null; i++ ) {
    353                result = getCachedIdentifiable( expectedType, ids[i] );
    354                if ( LOG.isDebug() ) {
    355                    LOG.logDebug( "Searched for id: " + ids[i] + " resulted in: "
    356                                  + ( ( result == null ) ? "null" : result.getIdentifier() ) );
    357                }
    358            }
    359            return result;
    360        }
    361
    362        /**
    363         * The id is as it is, not trimming 'upcasing' or other modifications will be done in this method.
    364         *
    365         * @param expectedType
    366         *            The class of type T which is expected.
    367         * @param <V>
    368         *            the type to cast to if the casting fails, null will be returned.
    369         *
    370         * @param id
    371         *            to search the cache for
    372         * @return the {@link Identifiable} or <code>null</code> if it was not found or the wrong type was found.
    373         */
    374        @SuppressWarnings("unchecked")
    375        public <V extends Identifiable> V getCachedIdentifiable( Class<V> expectedType, String id ) {
    376            if ( id == null ) {
    377                return null;
    378            }
    379            V result = null;
    380            try {
    381                result = (V) cachedIdentifiables.get( id );
    382            } catch ( ClassCastException cce ) {
    383                LOG.logError( "Given id is not of type: " + expectedType.getCanonicalName() + " found following error: "
    384                              + cce.getLocalizedMessage() );
    385            }
    386            if ( LOG.isDebug() ) {
    387                LOG.logDebug( "Searched for id: " + id + " resulted in: "
    388                              + ( ( result == null ) ? "null" : result.getIdentifier() ) );
    389            }
    390            return result;
    391        }
    392
    393        /**
    394         * The id is as it is, not trimming 'upcasing' or other modifications will be done in this method.
    395         *
    396         * @param <V>
    397         *            the type to cast to if the casting fails, null will be returned.
    398         *
    399         * @param id
    400         *            to search the cache for
    401         * @return the {@link Identifiable} or <code>null</code> if it was not found or the wrong type was found.
    402         */
    403        @SuppressWarnings("unchecked")
    404        public <V extends Identifiable> V getCachedIdentifiable( String id ) {
    405            if ( id == null ) {
    406                return null;
    407            }
    408            V result = (V) cachedIdentifiables.get( id );
    409            if ( LOG.isDebug() ) {
    410                LOG.logDebug( "Searched for id: " + id + " resulted in: "
    411                              + ( ( result == null ) ? "null" : result.getIdentifier() ) );
    412            }
    413            return result;
    414        }
    415
    416        /**
    417         * Add the id to the cache, by mapping it to all its identifiers.
    418         *
    419         * @param <V>
    420         *            type of Identifiable
    421         * @param identifiable
    422         *            to insert into cache
    423         * @param update
    424         *            if true an existing identifiable in the cache will be overwritten.
    425         * @return the identifiable
    426         */
    427        public <V extends Identifiable> V addIdToCache( V identifiable, boolean update ) {
    428            if ( identifiable == null ) {
    429                return null;
    430            }
    431            try {
    432                synchronized ( cachedIdentifiables ) {
    433
    434                    for ( String idString : identifiable.getIdentifiers() ) {
    435                        if ( idString != null && !"".equals( idString.trim() ) ) {
    436                            if ( cachedIdentifiables.containsKey( idString ) && cachedIdentifiables.get( idString ) != null ) {
    437                                if ( update ) {
    438                                    LOG.logDebug( "Updating cache with new identifiable: " + idString );
    439                                    cachedIdentifiables.put( idString, identifiable );
    440                                }
    441                            } else {
    442                                LOG.logDebug( "Adding new identifiable to cache: " + idString );
    443                                cachedIdentifiables.put( idString, identifiable );
    444                            }
    445                        } else {
    446                            LOG.logWarning( "Not adding the null string id to the cache of identifiable: "
    447                                            + identifiable.getIdentifier() );
    448                        }
    449                    }
    450                    cachedIdentifiables.notifyAll();
    451                }
    452            } catch ( Exception e ) {
    453                LOG.logError( "Could not add identifiable to cache because: " + e.getLocalizedMessage(), e );
    454            }
    455            return identifiable;
    456        }
    457
    458        /**
    459         * The <code>SupportedTransformations</code> enumeration defines currently supported transformations
    460         *
    461         * @author <a href="mailto:bezema@lat-lon.de">Rutger Bezema</a>
    462         *
    463         * @author last edited by: $Author: rbezema $
    464         *
    465         * @version $Revision: 23328 $, $Date: 2010-03-30 17:40:30 +0200 (Di, 30. Mär 2010) $
    466         *
    467         */
    468        public enum SupportedTransformations {
    469            /**
    470             * The {@link Helmert}, transformation with 7 values
    471             */
    472            HELMERT_7,
    473            /**
    474             * The {@link Helmert}, transformation with 3 values
    475             */
    476            HELMERT_3,
    477            /**
    478             * The {@link GeocentricTransform} going from geographic to geocentric.
    479             */
    480            GEOGRAPHIC_GEOCENTRIC,
    481            /**
    482             * The primemeridian rotation going from any to greenwich
    483             */
    484            LONGITUDE_ROTATION,
    485            /**
    486             * The {@link PolynomialTransformation} defining the general 2, 3, ... degree polynomial transformation
    487             */
    488            GENERAL_POLYNOMIAL,
    489            /**
    490             * The ntv2, currently not supported
    491             */
    492            NTV2,
    493            /**
    494             * A not supported projection
    495             */
    496            NOT_SUPPORTED
    497        }
    498
    499        /**
    500         * The <code>SupportedTransformationParameters</code> enumeration defines currently supported transformation
    501         * parameters
    502         *
    503         * @author <a href="mailto:bezema@lat-lon.de">Rutger Bezema</a>
    504         *
    505         * @author last edited by: $Author: rbezema $
    506         *
    507         * @version $Revision: 23328 $, $Date: 2010-03-30 17:40:30 +0200 (Di, 30. Mär 2010) $
    508         *
    509         */
    510        public enum SupportedTransformationParameters {
    511            /**
    512             * The X TRANSLATION of a (3/7) helmert transformation.
    513             */
    514            X_AXIS_TRANSLATION,
    515            /**
    516             * The Y TRANSLATION of a (3/7) helmert transformation.
    517             */
    518            Y_AXIS_TRANSLATION,
    519            /**
    520             * The Z TRANSLATION of a (3/7) helmert transformation.
    521             */
    522            Z_AXIS_TRANSLATION,
    523            /**
    524             * The X Rotation of a (3/7) helmert transformation.
    525             */
    526            X_AXIS_ROTATION,
    527            /**
    528             * The Y Rotation of a (3/7) helmert transformation.
    529             */
    530            Y_AXIS_ROTATION,
    531            /**
    532             * The Z Rotation of a (3/7) helmert transformation.
    533             */
    534            Z_AXIS_ROTATION,
    535            /**
    536             * The Difference of scale of a (3/7) helmert transformation.
    537             */
    538            SCALE_DIFFERENCE,
    539            /**
    540             * The longitude offset of a longitude rotation
    541             */
    542            LONGITUDE_OFFSET,
    543            /**
    544             * GENERIC transformation parameters are not yet supported.
    545             */
    546            GENERIC_POLYNOMIAL_PARAM,
    547            /**
    548             * A not supported projection parameter.
    549             */
    550            NOT_SUPPORTED
    551        }
    552
    553        /**
    554         * The <code>SupportedProjections</code> enumeration defines currently supported projections
    555         *
    556         * @author <a href="mailto:bezema@lat-lon.de">Rutger Bezema</a>
    557         *
    558         * @author last edited by: $Author: rbezema $
    559         *
    560         * @version $Revision: 23328 $, $Date: 2010-03-30 17:40:30 +0200 (Di, 30. Mär 2010) $
    561         *
    562         */
    563        public enum SupportedProjections {
    564            /**
    565             * The {@link TransverseMercator} projection
    566             */
    567            TRANSVERSE_MERCATOR,
    568            /**
    569             * The {@link LambertConformalConic} projection
    570             */
    571            LAMBERT_CONFORMAL,
    572            /**
    573             * The {@link LambertAzimuthalEqualArea} projection
    574             */
    575            LAMBERT_AZIMUTHAL_EQUAL_AREA,
    576            /**
    577             * Snyders {@link StereographicAzimuthal} implementation of the stereographic azimuthal projection
    578             */
    579            STEREOGRAPHIC_AZIMUTHAL,
    580            /**
    581             * EPSG {@link StereographicAlternative} implementation of the Stereographic azimuthal projection
    582             */
    583            STEREOGRAPHIC_AZIMUTHAL_ALTERNATIVE,
    584            /**
    585             * A not supported projection
    586             */
    587            NOT_SUPPORTED
    588        }
    589
    590        /**
    591         * The <code>SupportedProjectionParameters</code> enumeration defines currently supported projection parameters
    592         *
    593         * @author <a href="mailto:bezema@lat-lon.de">Rutger Bezema</a>
    594         *
    595         * @author last edited by: $Author: rbezema $
    596         *
    597         * @version $Revision: 23328 $, $Date: 2010-03-30 17:40:30 +0200 (Di, 30. Mär 2010) $
    598         *
    599         */
    600        public enum SupportedProjectionParameters {
    601            /**
    602             * The latitude of natural origin of a given projection, aka. projectionLatitude, central-latitude or
    603             * latitude-of-origin, in Snyder referenced as phi_1 for azimuthal, phi_0 for other projections.
    604             */
    605            LATITUDE_OF_NATURAL_ORIGIN,
    606            /**
    607             * The longitude of natural origin of a given projection, aka. projectionLongitude, projection-meridian,
    608             * central-meridian, in Snyder referenced as lambda_0
    609             */
    610            LONGITUDE_OF_NATURAL_ORIGIN,
    611            /**
    612             * The false easting of the projection.
    613             */
    614            FALSE_EASTING,
    615            /**
    616             * The false northing of the projection.
    617             */
    618            FALSE_NORTHING,
    619            /**
    620             * The scale at the natural origin of the projection.
    621             */
    622            SCALE_AT_NATURAL_ORIGIN,
    623            /**
    624             * The latitude which the scale is 1 of a stereographic azimuthal projection.
    625             */
    626            TRUE_SCALE_LATITUDE,
    627            /**
    628             * The first parallel latitude of conic projections.
    629             */
    630            FIRST_PARALLEL_LATITUDE,
    631            /**
    632             * The second parallel latitude of conic projections.
    633             */
    634            SECOND_PARALLEL_LATITUDE,
    635
    636            /**
    637             * A not supported projection parameter.
    638             */
    639            NOT_SUPPORTED
    640        }
    641
    642        /**
    643         *
    644         * @param identifiers
    645         *            to check for.
    646         * @return a mapped projection or {@link SupportedProjections#NOT_SUPPORTED}, never <code>null</code>
    647         */
    648        protected SupportedProjections mapProjections( String[] identifiers ) {
    649            if ( identifiers == null || identifiers.length == 0 ) {
    650                return SupportedProjections.NOT_SUPPORTED;
    651            }
    652            for ( String id : identifiers ) {
    653                if ( id != null && !"".equals( id.trim() ) ) {
    654                    String compare = id.trim();
    655                    if ( "TransverseMercator".equalsIgnoreCase( compare )
    656                         || "Transverse Merctator".equalsIgnoreCase( compare )
    657                         || matchEPSGString( compare, "method", "9807" ) ) {
    658                        return SupportedProjections.TRANSVERSE_MERCATOR;
    659                    } else if ( "lambertAzimuthalEqualArea".equalsIgnoreCase( compare )
    660                                || "Lambert Azimuthal Equal Area".equalsIgnoreCase( compare )
    661                                || "Lambert Azimuthal Equal Area (Spherical)".equalsIgnoreCase( compare )
    662                                || matchEPSGString( compare, "method", "9820" )
    663                                || matchEPSGString( compare, "method", "9821" ) ) {
    664                        return SupportedProjections.LAMBERT_AZIMUTHAL_EQUAL_AREA;
    665                    } else if ( "stereographicAlternative".equalsIgnoreCase( compare )
    666                                || "Oblique Stereographic".equalsIgnoreCase( compare )
    667                                || compare.contains( "Polar Stereographic" ) || matchEPSGString( compare, "method", "9809" )
    668                                || matchEPSGString( compare, "method", "9810" )
    669                                || matchEPSGString( compare, "method", "9829" )
    670                                || matchEPSGString( compare, "method", "9830" ) ) {
    671                        return SupportedProjections.STEREOGRAPHIC_AZIMUTHAL_ALTERNATIVE;
    672                    } else if ( "stereographicAzimuthal".equalsIgnoreCase( compare ) ) {
    673                        return SupportedProjections.STEREOGRAPHIC_AZIMUTHAL;
    674                    } else if ( "lambertConformalConic".equalsIgnoreCase( compare )
    675                                || compare.contains( "Lambert Conic Conformal" )
    676                                || matchEPSGString( compare, "method", "9801" )
    677                                || matchEPSGString( compare, "method", "9802" )
    678                                || matchEPSGString( compare, "method", "9803" ) ) {
    679                        return SupportedProjections.LAMBERT_CONFORMAL;
    680                    }
    681                }
    682            }
    683            return SupportedProjections.NOT_SUPPORTED;
    684        }
    685
    686        /**
    687         *
    688         * @param identifiers
    689         *            to check for.
    690         * @return a mapped projections parameters or {@link SupportedProjectionParameters#NOT_SUPPORTED}, never
    691         *         <code>null</code>
    692         */
    693        protected SupportedProjectionParameters mapProjectionParameters( String[] identifiers ) {
    694            if ( identifiers == null || identifiers.length == 0 ) {
    695                return SupportedProjectionParameters.NOT_SUPPORTED;
    696            }
    697            for ( String name : identifiers ) {
    698                if ( name != null && !"".equals( name.trim() ) ) {
    699                    String compare = name.trim();
    700                    if ( "Latitude of natural origin".equalsIgnoreCase( compare )
    701                         || "Latitude of false origin".equalsIgnoreCase( compare )
    702                         || "central latitude".equalsIgnoreCase( compare )
    703                         || "latitude of origin".equalsIgnoreCase( compare )
    704                         || "latitudeOfNaturalOrigin".equalsIgnoreCase( compare )
    705                         || matchEPSGString( compare, "parameter", "8801" )
    706                         || matchEPSGString( compare, "parameter", "8811" )
    707                         || matchEPSGString( compare, "parameter", "8821" ) ) {
    708                        return SupportedProjectionParameters.LATITUDE_OF_NATURAL_ORIGIN;
    709                    } else if ( "Longitude of natural origin".equalsIgnoreCase( compare )
    710                                || "Central Meridian".equalsIgnoreCase( compare ) || "CM".equalsIgnoreCase( compare )
    711                                || "Longitude of origin".equalsIgnoreCase( compare )
    712                                || "Longitude of false origin".equalsIgnoreCase( compare )
    713                                || "longitudeOfNaturalOrigin".equalsIgnoreCase( compare )
    714                                || matchEPSGString( compare, "parameter", "8802" )
    715                                || matchEPSGString( compare, "parameter", "8812" )
    716                                || matchEPSGString( compare, "parameter", "8822" ) ) {
    717                        return SupportedProjectionParameters.LONGITUDE_OF_NATURAL_ORIGIN;
    718                    } else if ( "Scale factor at natural origin".equalsIgnoreCase( compare )
    719                                || "scaleFactor".equalsIgnoreCase( compare )
    720                                || matchEPSGString( compare, "parameter", "8805" ) ) {
    721                        return SupportedProjectionParameters.SCALE_AT_NATURAL_ORIGIN;
    722                    } else if ( "Latitude of pseudo standard parallel ".equalsIgnoreCase( compare )
    723                                || "Latitude of standard parallel ".equalsIgnoreCase( compare )
    724                                || "trueScaleLatitude".equalsIgnoreCase( compare )
    725                                || matchEPSGString( compare, "parameter", "8832" )
    726                                || matchEPSGString( compare, "parameter", "8818" ) ) {
    727                        return SupportedProjectionParameters.TRUE_SCALE_LATITUDE;
    728                    } else if ( "False easting".equalsIgnoreCase( compare ) || "falseEasting".equalsIgnoreCase( compare )
    729                                || "false westing".equalsIgnoreCase( compare )
    730                                || "Easting at false origin".equalsIgnoreCase( compare )
    731                                || matchEPSGString( compare, "parameter", "8806" )
    732                                || matchEPSGString( compare, "parameter", "8816" )
    733                                || matchEPSGString( compare, "parameter", "8826" ) ) {
    734                        return SupportedProjectionParameters.FALSE_EASTING;
    735                    } else if ( "False northing".equalsIgnoreCase( compare ) || "falseNorthing".equalsIgnoreCase( compare )
    736                                || "false southing".equalsIgnoreCase( compare )
    737                                || "Northing at false origin".equalsIgnoreCase( compare )
    738                                || matchEPSGString( compare, "parameter", "8807" )
    739                                || matchEPSGString( compare, "parameter", "8827" )
    740                                || matchEPSGString( compare, "parameter", "8817" ) ) {
    741                        return SupportedProjectionParameters.FALSE_NORTHING;
    742                    } else if ( "Latitude of 1st standard parallel".equalsIgnoreCase( compare )
    743                                || "firstParallelLatitude".equalsIgnoreCase( compare )
    744                                || matchEPSGString( compare, "parameter", "8823" ) ) {
    745                        return SupportedProjectionParameters.FIRST_PARALLEL_LATITUDE;
    746                    } else if ( "Latitude of 2nd standard parallel".equalsIgnoreCase( compare )
    747                                || "secondParallelLatitude".equalsIgnoreCase( compare )
    748                                || matchEPSGString( compare, "parameter", "8824" ) ) {
    749                        return SupportedProjectionParameters.SECOND_PARALLEL_LATITUDE;
    750                    }
    751
    752                }
    753            }
    754            return SupportedProjectionParameters.NOT_SUPPORTED;
    755        }
    756
    757        /**
    758         *
    759         * @param identifiers
    760         *            to check for.
    761         * @return a mapped transformation or {@link SupportedTransformations#NOT_SUPPORTED}, never <code>null</code>
    762         */
    763        protected SupportedTransformations mapTransformation( String[] identifiers ) {
    764            if ( identifiers == null || identifiers.length == 0 ) {
    765                return SupportedTransformations.NOT_SUPPORTED;
    766            }
    767            for ( String id : identifiers ) {
    768                if ( id != null && !"".equals( id.trim() ) ) {
    769                    String compare = id.trim();
    770                    if ( "Longitude rotation".equalsIgnoreCase( compare ) || matchEPSGString( compare, "method", "9601" ) ) {
    771                        return SupportedTransformations.LONGITUDE_ROTATION;
    772                    } else if ( "Geographic/geocentric conversions".equalsIgnoreCase( compare )
    773                                || matchEPSGString( compare, "method", "9602" ) ) {
    774                        return SupportedTransformations.GEOGRAPHIC_GEOCENTRIC;
    775                    } else if ( "Geocentric translations".equalsIgnoreCase( compare )
    776                                || matchEPSGString( compare, "method", "9603" ) ) {
    777                        return SupportedTransformations.HELMERT_3;
    778                    } else if ( "Position Vector 7-param. transformation".equalsIgnoreCase( compare )
    779                                || "Coordinate Frame rotation".equalsIgnoreCase( compare )
    780                                || matchEPSGString( compare, "method", "9606" )
    781                                || matchEPSGString( compare, "method", "9607" ) ) {
    782                        return SupportedTransformations.HELMERT_7;
    783                    } else if ( "NTv2".equalsIgnoreCase( compare ) || matchEPSGString( compare, "method", "9615" ) ) {
    784                        return SupportedTransformations.NOT_SUPPORTED;
    785                    } else if ( matchEPSGString( compare, "method", "9645" ) || matchEPSGString( compare, "method", "9646" )
    786                                || matchEPSGString( compare, "method", "9647" )
    787                                || matchEPSGString( compare, "method", "9648" ) ) {
    788                        return SupportedTransformations.GENERAL_POLYNOMIAL;
    789                    }
    790                }
    791            }
    792            return SupportedTransformations.NOT_SUPPORTED;
    793        }
    794
    795        /**
    796         *
    797         * @param identifiers
    798         *            to check for.
    799         * @return a mapped transformation or {@link SupportedTransformations#NOT_SUPPORTED}, never <code>null</code>
    800         */
    801        protected SupportedTransformationParameters mapTransformationParameters( String[] identifiers ) {
    802            if ( identifiers == null || identifiers.length == 0 ) {
    803                return SupportedTransformationParameters.NOT_SUPPORTED;
    804            }
    805            for ( String id : identifiers ) {
    806                if ( id != null && !"".equals( id.trim() ) ) {
    807                    String compare = id.trim();
    808                    if ( "Longitude offset".equalsIgnoreCase( compare ) || matchEPSGString( compare, "parameter", "8602" ) ) {
    809                        return SupportedTransformationParameters.LONGITUDE_OFFSET;
    810                    } else if ( "X-axis translation".equalsIgnoreCase( compare )
    811                                || matchEPSGString( compare, "parameter", "8605" ) ) {
    812                        return SupportedTransformationParameters.X_AXIS_TRANSLATION;
    813                    } else if ( "Y-axis translation".equalsIgnoreCase( compare )
    814                                || matchEPSGString( compare, "parameter", "8606" ) ) {
    815                        return SupportedTransformationParameters.Y_AXIS_TRANSLATION;
    816                    } else if ( "Z-axis translation".equalsIgnoreCase( compare )
    817                                || matchEPSGString( compare, "parameter", "8607" ) ) {
    818                        return SupportedTransformationParameters.Z_AXIS_TRANSLATION;
    819                    } else if ( "X-axis rotation".equalsIgnoreCase( compare )
    820                                || matchEPSGString( compare, "parameter", "8608" ) ) {
    821                        return SupportedTransformationParameters.X_AXIS_ROTATION;
    822                    } else if ( "Y-axis rotation".equalsIgnoreCase( compare )
    823                                || matchEPSGString( compare, "parameter", "8609" ) ) {
    824                        return SupportedTransformationParameters.Y_AXIS_ROTATION;
    825                    } else if ( "Z-axis rotation".equalsIgnoreCase( compare )
    826                                || matchEPSGString( compare, "parameter", "8610" ) ) {
    827                        return SupportedTransformationParameters.Z_AXIS_ROTATION;
    828                    } else if ( "Scale difference".equalsIgnoreCase( compare )
    829                                || matchEPSGString( compare, "parameter", "8611" ) ) {
    830                        return SupportedTransformationParameters.SCALE_DIFFERENCE;
    831                    }
    832                }
    833            }
    834            return SupportedTransformationParameters.NOT_SUPPORTED;
    835        }
    836    }