How to use

getObjectParameter

method

in

javax.media.jai.ParameterList

/** Returns the string value of an operation parameter. */
public String stringValue() throws InvalidParameterTypeException {
  final String name = getName();
  try {
    // Really cast to CharSequence (even if not needed for toString())
    // because we want the ClassCastException if the type mismatch.
    return ((CharSequence) parameters.getObjectParameter(name)).toString();
  } catch (ClassCastException exception) {
    throw invalidType(exception);
  }
}

/** Returns an ordered sequence of two or more integer values of an operation parameter list. */
public int[] intValueList() throws InvalidParameterTypeException {
  final String name = getName();
  try {
    return (int[]) parameters.getObjectParameter(name);
  } catch (ClassCastException exception) {
    throw invalidType(exception);
  }
}

/** Returns an ordered sequence of two or more numeric values of an operation parameter list. */
public double[] doubleValueList() throws InvalidParameterTypeException {
  final String name = getName();
  try {
    return (double[]) parameters.getObjectParameter(name);
  } catch (ClassCastException exception) {
    throw invalidType(exception);
  }
}

/**
 * Returns a reference to a file or a part of a file containing one or more parameter value.
 *
 * @todo Add automatic conversions, if it appears usefull for JAI parameters.
 */
public URI valueFile() throws InvalidParameterTypeException {
  final String name = getName();
  try {
    return (URI) parameters.getObjectParameter(name);
  } catch (ClassCastException exception) {
    throw invalidType(exception);
  }
}

/**
 * Returns the parameter value as an object. The object type is typically a {@link Double},
 * {@link Integer}, {@link Boolean}, {@link String}, {@link URI}, {@code double[]} or {@code
 * int[]}.
 */
public T getValue() {
  final String name = getName();
  final Object value;
  try {
    value = parameters.getObjectParameter(name);
  } catch (IllegalStateException ignore) {
    /*
     * Thrown when the value still ParameterListDescriptor.NO_PARAMETER_DEFAULT.
     * In this framework, the desired behavior in this case is to returns null.
     */
    return null;
  }
  return getType().cast(value);
}

    Arrays.equals(
        values.parameter("constants").doubleValueList(),
        (double[]) values.parameters.getObjectParameter("constants")));
assertSame(before, values.parameter("constants"));

KernelJAI mask1 = (KernelJAI) block.getObjectParameter("Mask1");
KernelJAI mask2 = (KernelJAI) block.getObjectParameter("Mask2");

KernelJAI mask1 = (KernelJAI) block.getObjectParameter("Mask1");
KernelJAI mask2 = (KernelJAI) block.getObjectParameter("Mask2");

final KernelJAI mask1 = (KernelJAI) block.getObjectParameter("Mask1");
final KernelJAI mask2 = (KernelJAI) block.getObjectParameter("Mask2");
final double size = (mask1.getWidth() + mask1.getHeight() +
           mask2.getWidth() + mask2.getHeight()) / 4.0;

final KernelJAI mask1 = (KernelJAI) block.getObjectParameter("Mask1");
final KernelJAI mask2 = (KernelJAI) block.getObjectParameter("Mask2");
final double size = (mask1.getWidth() + mask1.getHeight() +
           mask2.getWidth() + mask2.getHeight()) / 4.0;