/** * Creates the backing store authority factory. * * @return The backing store to uses in {@code createXXX(...)} methods. * @throws FactoryNotFoundException if the no {@code epsg.properties} file has been found. * @throws FactoryException if the constructor failed to find or read the file. This exception * usually has an {@link IOException} as its cause. */ protected AbstractAuthorityFactory createBackingStore() throws FactoryException { try { URL url = getDefinitionsURL(); if (url == null) { throw new FactoryNotFoundException( Errors.format(ErrorKeys.FILE_DOES_NOT_EXIST_$1, FILENAME)); } final Iterator<? extends Identifier> ids = getAuthority().getIdentifiers().iterator(); final String authority = ids.hasNext() ? ids.next().getCode() : "EPSG"; final LogRecord record = Loggings.format( Level.CONFIG, LoggingKeys.USING_FILE_AS_FACTORY_$2, url.getPath(), authority); record.setLoggerName(LOGGER.getName()); LOGGER.log(record); return new PropertyAuthorityFactory(factories, getAuthorities(), url); } catch (IOException exception) { throw new FactoryException(Errors.format(ErrorKeys.CANT_READ_$1, FILENAME), exception); } }
/** * Returns {@code true} if this factory is available. The default implementation returns {@code * false} if no backing store were setup and {@link DeferredAuthorityFactory#createBackingStore} * throws an exception. */ @Override synchronized boolean isAvailable() { try { return getBackingStore().isAvailable(); } catch (FactoryNotFoundException exception) { /* * The factory is not available. This is error may be normal; it happens * for example if no gt2-epsg-hsql.jar (or similar JAR) are found in the * classpath, which is the case for example in GeoServer 1.3. Do not log * any stack trace, since stack traces suggest more serious errors than * what we really have here. */ } catch (FactoryException exception) { /* * The factory creation failed for an other reason, which may be more * serious. Now it is time to log a warning with a stack trace. */ final Citation citation = getAuthority(); final Collection titles = citation.getAlternateTitles(); InternationalString title = citation.getTitle(); if (titles != null) { for (final Iterator it = titles.iterator(); it.hasNext(); ) { /* * Uses the longuest title instead of the main one. In Geotools * implementation, the alternate title may contains usefull informations * like the EPSG database version number and the database engine. */ final InternationalString candidate = (InternationalString) it.next(); if (candidate.length() > title.length()) { title = candidate; } } } final LogRecord record = Loggings.format(Level.WARNING, LoggingKeys.UNAVAILABLE_AUTHORITY_FACTORY_$1, title); record.setSourceClassName(getClass().getName()); record.setSourceMethodName("isAvailable"); record.setThrown(exception); record.setLoggerName(LOGGER.getName()); LOGGER.log(record); } return false; }