public static OperationRegistry initializeRegistry() {
try {
InputStream url = PropertyUtil.getFileFromClasspath(JAI_REGISTRY_FILE);
if (url == null) {
throw new RuntimeException("Could not find the main registry file");
}
OperationRegistry registry = new ConcurrentOperationRegistry();
if (url != null) {
registry.updateFromStream(url);
}
registry.registerServices(null);
return registry;
} catch (IOException ioe) {
ImagingListener listener = JAI.getDefaultInstance().getImagingListener();
String message = "Error occurred while initializing JAI";
listener.errorOccurred(
message, new ImagingException(message, ioe), OperationRegistry.class, false);
return null;
}
}
/**
* Returns a list of property names that are recognized by this image.
*
* @return An array of <code>String</code>s containing valid property names.
*/
public String[] getPropertyNames() {
// Get statistics names and names from superclass.
String[] statsNames = getStatisticsNames();
String[] superNames = super.getPropertyNames();
// Return stats names if not superclass names.
if (superNames == null) {
return statsNames;
}
// Check for overlap between stats names and superclass names.
Vector extraNames = new Vector();
for (int i = 0; i < statsNames.length; i++) {
String prefix = statsNames[i];
String[] names = PropertyUtil.getPropertyNames(superNames, prefix);
if (names != null) {
for (int j = 0; j < names.length; j++) {
if (names[j].equalsIgnoreCase(prefix)) {
extraNames.add(prefix);
}
}
}
}
// If no overlap then return.
if (extraNames.size() == 0) {
return superNames;
}
// Combine superclass and extra names.
String[] propNames = new String[superNames.length + extraNames.size()];
System.arraycopy(superNames, 0, propNames, 0, superNames.length);
int offset = superNames.length;
for (int i = 0; i < extraNames.size(); i++) {
propNames[offset++] = (String) extraNames.get(i);
}
// Return combined name set.
return propNames;
}