/**
* Returns the URL to the property file that contains CRS definitions. The default implementation
* performs the following search path:
*
* <ul>
* <li>If a value is set for the {@value #CRS_DIRECTORY_KEY} system property key, then the
* {@value #FILENAME} file will be searched in this directory.
* <li>If no value is set for the above-cited system property, or if no {@value #FILENAME} file
* was found in that directory, then the first {@value #FILENAME} file found in any {@code
* org/geotools/referencing/factory/epsg} directory on the classpath will be used.
* <li>If no file was found on the classpath neither, then this factory will be disabled.
* </ul>
*
* @return The URL, or {@code null} if none.
*/
protected URL getDefinitionsURL() {
try {
if (directory != null) {
final File file = new File(directory, FILENAME);
if (file.isFile()) {
return file.toURI().toURL();
}
}
} catch (SecurityException exception) {
Logging.unexpectedException(LOGGER, exception);
} catch (MalformedURLException exception) {
Logging.unexpectedException(LOGGER, exception);
}
return FactoryUsingWKT.class.getResource(FILENAME);
}
/**
* Implementation of {@code fixName} method. If the context is {@code null}, then the {@linkplain
* #getInitialContext GeoTools initial context} will be fetch only when first needed.
*/
private static String fixName(Context context, final String name, final Hints hints) {
String fixed = null;
if (name != null) {
final StringTokenizer tokens = new StringTokenizer(name, ":/");
while (tokens.hasMoreTokens()) {
final String part = tokens.nextToken();
if (fixed == null) {
fixed = part;
} else
try {
if (context == null) {
context = getInitialContext(hints);
}
fixed = context.composeName(fixed, part);
} catch (NamingException e) {
Logging.unexpectedException(GeoTools.class, "fixName", e);
return name;
}
}
}
return fixed;
}
/**
* Logs an exception as if it originated from {@link Hints#scanSystemProperties}, since it is the
* public API that may invokes this method.
*/
private static void unexpectedException(final Exception exception) {
Logging.unexpectedException(Hints.class, "scanSystemProperties", exception);
}
