001    // License: GPL. For details, see LICENSE file.
002    package org.openstreetmap.josm.io;
003    
004    import java.net.HttpURLConnection;
005    import java.util.regex.Matcher;
006    import java.util.regex.Pattern;
007    
008    import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
009    
010    /**
011     * Represents an exception thrown by the OSM API if JOSM tries to update or delete a primitive
012     * which is already deleted on the server.
013     *
014     */
015    public class OsmApiPrimitiveGoneException extends OsmApiException{
016        /**
017         * The regexp pattern for the error header replied by the OSM API
018         */
019        static public final String ERROR_HEADER_PATTERN = "The (\\S+) with the id (\\d+) has already been deleted";
020        /** the type of the primitive which is gone on the server */
021        private OsmPrimitiveType type;
022        /** the id of the primitive */
023        private long id;
024    
025        public OsmApiPrimitiveGoneException(String errorHeader, String errorBody) {
026            super(HttpURLConnection.HTTP_GONE, errorHeader, errorBody);
027            if (errorHeader == null) return;
028            Pattern p = Pattern.compile(ERROR_HEADER_PATTERN);
029            Matcher m = p.matcher(errorHeader);
030            if (m.matches()) {
031                type = OsmPrimitiveType.from(m.group(1));
032                id = Long.parseLong(m.group(2));
033            }
034        }
035    
036        /**
037         * Replies true if we know what primitive this exception was thrown for
038         *
039         * @return true if we know what primitive this exception was thrown for
040         */
041        public boolean isKnownPrimitive() {
042            return id > 0 && type != null;
043        }
044    
045        /**
046         * Replies the type of the primitive this exception was thrown for. null,
047         * if the type is not known.
048         *
049         * @return the type of the primitive this exception was thrown for
050         */
051        public OsmPrimitiveType getPrimitiveType() {
052            return type;
053        }
054    
055        /**
056         * Replies the id of the primitive this exception was thrown for. 0, if
057         * the id is not known.
058         *
059         * @return the id of the primitive this exception was thrown for
060         */
061        public long getPrimitiveId() {
062            return id;
063        }
064    }