How to use

org.geotools.factory.FactoryRegistry

constructor

/**
 * Constructs a default coverage processor. The {@link #scanForPlugins} method will be
 * automatically invoked the first time an operation is required. Additional operations
 * can be added by subclasses with the {@link #addOperation} method. Rendering hints will
 * be initialized with the following hints:
 * <p>
 * <ul>
 *   <li>{@link JAI#KEY_REPLACE_INDEX_COLOR_MODEL} set to {@link Boolean#FALSE}.</li>
 *   <li>{@link JAI#KEY_TRANSFORM_ON_COLORMAP} set to {@link Boolean#FALSE}.</li>
 * </ul>
 *
 * @param hints A set of additional rendering hints, or {@code null} if none.
 */
public DefaultProcessor(final RenderingHints hints) {
  registry = new FactoryRegistry(Collections.singleton(Operation.class));
  this.hints = new Hints(hints);
  this.hints.put(JAI.KEY_REPLACE_INDEX_COLOR_MODEL, Boolean.FALSE);
  this.hints.put(JAI.KEY_TRANSFORM_ON_COLORMAP,     Boolean.FALSE);
  this.hints.put(Hints.GRID_COVERAGE_PROCESSOR,     this); // Must overwrites user setting.
}

/**
 * Constructs a default coverage processor. The {@link #scanForPlugins} method will be
 * automatically invoked the first time an operation is required. Additional operations
 * can be added by subclasses with the {@link #addOperation} method. Rendering hints will
 * be initialized with the following hints:
 * <p>
 * <ul>
 *   <li>{@link JAI#KEY_REPLACE_INDEX_COLOR_MODEL} set to {@link Boolean#FALSE}.</li>
 *   <li>{@link JAI#KEY_TRANSFORM_ON_COLORMAP} set to {@link Boolean#FALSE}.</li>
 * </ul>
 *
 * @param hints A set of additional rendering hints, or {@code null} if none.
 */
public CoverageProcessor(final RenderingHints hints) {
  registry = new FactoryRegistry(Arrays.asList(new Class<?>[] {
    Operation.class
  }));
  this.hints = new Hints();
  this.hints.put(JAI.KEY_REPLACE_INDEX_COLOR_MODEL, Boolean.FALSE);
  this.hints.put(JAI.KEY_TRANSFORM_ON_COLORMAP,     Boolean.FALSE);
  
  // override with user hints
  if(hints!=null)
    this.hints.add(hints);
  
}