How to use

castOrCopy

method

in

org.apache.sis.referencing.operation.DefaultConversion

/**
 * Invoked by JAXB at marshalling time for getting the actual element to write
 * inside the {@code <gml:Conversion>} XML element.
 * This is the value or a copy of the value given in argument to the {@code wrap} method.
 *
 * @return the element to be marshalled.
 */
@XmlElement(name = "Conversion")
public DefaultConversion getElement() {
  return DefaultConversion.castOrCopy(metadata);
}

/**
 * Invoked by JAXB at marshalling time for getting the actual element to write
 * inside the {@code <gml:Conversion>} XML element.
 * This is the value or a copy of the value given in argument to the {@code wrap} method.
 *
 * @return the element to be marshalled.
 */
@XmlElement(name = "Conversion")
public DefaultConversion getElement() {
  return DefaultConversion.castOrCopy(metadata);
}

/**
 * Creates the conversion instance to associate with this {@code AbstractDerivedCRS}.
 *
 * <p><b>WARNING:</b> this method is invoked at construction time and will invoke indirectly
 * (through {@link DefaultConversion}) the {@link #getCoordinateSystem()} method on {@code this}.
 * Consequently this method shall be invoked only after the construction of this {@code AbstractDerivedCRS}
 * instance is advanced enough for allowing the {@code getCoordinateSystem()} method to execute.
 * Subclasses may consider to make the {@code getCoordinateSystem()} method final for better guarantees.</p>
 */
private C createConversionFromBase(final Map<String,?> properties, final SingleCRS baseCRS, final Conversion conversion) {
  MathTransformFactory factory = null;
  if (properties != null) {
    factory = (MathTransformFactory) properties.get(ReferencingServices.MT_FACTORY);
  }
  if (factory == null) {
    factory = DefaultFactories.forBuildin(MathTransformFactory.class);
  }
  try {
    return DefaultConversion.castOrCopy(conversion).specialize(getConversionType(), baseCRS, this, factory);
  } catch (FactoryException e) {
    throw new IllegalArgumentException(Errors.getResources(properties).getString(
        Errors.Keys.IllegalArgumentValue_2, "conversion", conversion.getName()), e);
  }
}

/**
 * Creates the conversion instance to associate with this {@code AbstractDerivedCRS}.
 *
 * <p><b>WARNING:</b> this method is invoked at construction time and will invoke indirectly
 * (through {@link DefaultConversion}) the {@link #getCoordinateSystem()} method on {@code this}.
 * Consequently this method shall be invoked only after the construction of this {@code AbstractDerivedCRS}
 * instance is advanced enough for allowing the {@code getCoordinateSystem()} method to execute.
 * Subclasses may consider to make the {@code getCoordinateSystem()} method final for better guarantees.</p>
 */
private C createConversionFromBase(final Map<String,?> properties, final SingleCRS baseCRS, final Conversion conversion) {
  MathTransformFactory factory = null;
  if (properties != null) {
    factory = (MathTransformFactory) properties.get(ReferencingServices.MT_FACTORY);
  }
  if (factory == null) {
    factory = DefaultFactories.forBuildin(MathTransformFactory.class);
  }
  try {
    return DefaultConversion.castOrCopy(conversion).specialize(getConversionType(), baseCRS, this, factory);
  } catch (FactoryException e) {
    throw new IllegalArgumentException(Errors.getResources(properties).getString(
        Errors.Keys.IllegalArgumentValue_2, "conversion", conversion.getName()), e);
  }
}