Examples of javax.media.jai.OperationDescriptor

javax.media.jai.OperationDescriptor
This interface provides a comprehensive description of a specific image operation. All information regarding the operation, such as its name, version, input, and properties should be listed. Any conditions placed on the operation, such as its source class types and legal parameter range, should also be included, and the methods to enforce these conditions should be implemented. A set of PropertyGenerators may be specified to be used as a basis for the operation's property management.
Each image operation in JAI must have a descriptor that implements this interface. The following basic resource data must be provided:
- A global operation name that is visible to all and is the same in all Locales.
- A localized operation name that may be used as a synonym for the global operation name.
- The name of the vendor defining this operation.
- A brief description of this operation.
- An URL where additional documentation on this operation may be found.
- The version of this operation.
Additional information must be provided when appropriate. Only then can this operation be added to an OperationRegistry. Furthermore, it is recommended that a detailed description of the operation's functionality be included in the class comments.
JAI currently knows about the following operation modes : "rendered", "renderable", "collection" and "renderableCollection" (these form a subset of the known registry modes returned by RegistryMode.getModes()). All mode names are dealt with in a case insensitive (but retentive) manner. All modes have to accept the same number of source images and the same number of parameters. All the source names and parameter names are also the same across all modes. The class types of the sources and parameters can be different for each mode.
For example an operation supporting the "rendered" mode takes RenderedImages as its sources, can only be used in a rendered operation chain, and produces a RenderedImage. An operation supporting the renderable mode takes RenderableImages as its sources, can only be used in a renderable operation chain, and produces a RenderableImage. @see JAI @see OperationDescriptorImpl

     * Registers the ArtifactsFilter operation
     *
     * @param registry The registry with which to register the operation
     */
    public void updateRegistry(OperationRegistry registry) {
        final OperationDescriptor op = new ArtifactsFilterDescriptor();
        registry.registerDescriptor(op);
        final String descName = op.getName();
        final RenderedImageFactory rif = new ArtifactsFilterRIF();
        registry.registerFactory(RenderedRegistryMode.MODE_NAME, descName,  productName, rif);


    }

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  @Before
  public void setup() throws IOException {
    OperationRegistry registry = JAI.getDefaultInstance().getOperationRegistry();
    try {
      final OperationDescriptor op = new ArtifactsFilterDescriptor();
      registry.registerDescriptor(op);
      final String descName = op.getName();
      final RenderedImageFactory rif = new ArtifactsFilterRIF();
      registry.registerFactory(RenderedRegistryMode.MODE_NAME, descName, "org.geotools.gce.imagemosaic.processing", rif);
    } catch (Exception e) {
      
    }

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                    null,            // Unit of measure
                    false);          // Parameter is optional


        // Gets the descriptors for extrema  JAI operation
        final OperationRegistry registry = JAI.getDefaultInstance().getOperationRegistry();
        final OperationDescriptor operation = (OperationDescriptor) registry
                        .getDescriptor(RenderedRegistryMode.MODE_NAME, "Extrema");


        // Gets the ImagingParameterDescriptors to replace xPeriod
        final List<ParameterDescriptor> replacingDescriptors = new ArrayList<ParameterDescriptor>(1);
        replacingDescriptors.add(SPATIAL_SUBSAMPLING_X);

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     */
    protected static OperationDescriptor getOperationDescriptor(final String name)
            throws OperationNotFoundException
    {
        final OperationRegistry registry = JAI.getDefaultInstance().getOperationRegistry();
        OperationDescriptor operation = (OperationDescriptor) registry.getDescriptor(RENDERED_MODE, name);
        if (operation != null) {
            return operation;
        }
        
        throw new OperationNotFoundException(Errors.format(ErrorKeys.OPERATION_NOT_FOUND_$1, name));

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             * close as possible to a kind of "locale-independent" string.  This string will be
             * used in order to remove the prefix (if any) from the global name, for example in
             * "org.geotools.Combine" operation name.  We can remove the prefix because it will
             * appears in the GenericName's scope below (as an alias).
             */
            final OperationDescriptor op = (OperationDescriptor) operation;
            final ResourceBundle bundle = op.getResourceBundle(Locale.getDefault());
            String vendor = op.getResourceBundle(Locale.US).getString("Vendor");
            Citation authority = null;
            if (vendor != null) {
                vendor = vendor.trim();
                name = ImagingParameterDescription.trimPrefix(name, vendor);
                for (int i=0; i<AUTHORITIES.length; i+=2) {

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        final int numSources;
        final int numParameters = descriptor.getNumParameters();
        final Map<String,CharSequence> properties = new HashMap<String,CharSequence>();
        ParameterDescriptor[] desc;
        if (operation instanceof OperationDescriptor) {
            final OperationDescriptor op = (OperationDescriptor) operation;
            final String[]   names = op.getSourceNames();
            final Class<?>[] types = op.getSourceClasses(registryMode);
            numSources = op.getNumSources();
            desc = new ParameterDescriptor[numParameters + numSources];
            for (int i=0; i<numSources; i++) {
                Class<?> type = (Class<?>) sourceTypeMap.get(types[i]);
                if (type == null) {
                    type = types[i];

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