Examples of org.opengis.parameter.ParameterDescriptorGroup

org.opengis.parameter.ParameterDescriptorGroup
engeospatial.org/files/?artifact_id=6716">Abstract specification 2.0 @author Martin Desruisseaux (IRD) @author Jody Garnett (Refractions Research) @since GeoAPI 2.0 @see ParameterValueGroup @see ParameterDescriptor

     * Tests {@link TensorValues#descriptor(String)}.
     */
    @Test
    public void testDescriptor() {
        final ParameterValueGroup group = create();
        final ParameterDescriptorGroup d = group.getDescriptor();
        assertDescriptorEquals("num_row", 3,   d.descriptor("num_row"));
        assertDescriptorEquals("num_col", 3,   d.descriptor("num_col"));
        assertDescriptorEquals("elt_0_0", 1.0, d.descriptor("elt_0_0"));
        assertDescriptorEquals("elt_2_2", 1.0, d.descriptor("elt_2_2"));
        /*
         * If we reduce the matrix size, than it shall not be possible
         * anymore to get the descriptor in the row that we removed.
         */
        group.parameter("num_col").setValue(2);
        try {
            d.descriptor("elt_2_2");
            fail("elt_2_2 should not exist.");
        } catch (ParameterNotFoundException e) {
            final String message = e.getMessage();
            assertTrue(message, message.contains("elt_2_2"));
            assertTrue(message, message.contains(GROUP_NAME));

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         * No groups were found. Check if the group actually exists (i.e. is declared in the
         * descriptor). If it doesn't exists, then an exception is thrown. If it exists (i.e.
         * it is simply an optional group not yet defined), then returns an empty list.
         */
        if (groups.isEmpty()) {
            final ParameterDescriptorGroup descriptor = values.descriptor;
            if (!(descriptor.descriptor(name) instanceof ParameterDescriptorGroup)) {
                throw new ParameterNotFoundException(Errors.format(
                        Errors.Keys.ParameterNotFound_2, descriptor.getName(), name), name);
            }
        }
        return groups;
    }

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    @Override
    public ParameterValueGroup addGroup(final String name)
            throws ParameterNotFoundException, InvalidParameterCardinalityException
    {
        final ParameterValueList values = this.values; // Protect against accidental changes.
        final ParameterDescriptorGroup descriptor = values.descriptor;
        final GeneralParameterDescriptor child = descriptor.descriptor(name);
        if (!(child instanceof ParameterDescriptorGroup)) {
            throw new ParameterNotFoundException(Errors.format(
                    Errors.Keys.ParameterNotFound_2, descriptor.getName(), name), name);
        }
        final ParameterValueGroup value = ((ParameterDescriptorGroup) child).createValue();
        values.add(value);
        return value;
    }

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     * @return The parameter descriptor group.
     */
    public ParameterDescriptorGroup createGroup(final int minimumOccurs, final int maximumOccurs,
            final GeneralParameterDescriptor... parameters)
    {
        final ParameterDescriptorGroup group;
        onCreate(false);
        try {
            group = new DefaultParameterDescriptorGroup(properties, minimumOccurs, maximumOccurs, parameters);
        } finally {
            onCreate(true);

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                    return minimumOccurs == that.minimumOccurs &&
                           maximumOccurs == that.maximumOccurs &&
                           descriptors.equals(that.descriptors);
                }
                default: {
                    final ParameterDescriptorGroup that = (ParameterDescriptorGroup) object;
                    return getMinimumOccurs() == that.getMinimumOccurs() &&
                           getMaximumOccurs() == that.getMaximumOccurs() &&
                           deepEquals(descriptors(), that.descriptors(), mode);
                }
            }
        }
        return false;
    }

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     *
     * @param  values The parameter group to format.
     * @throws IOException if an error occured will writing to the stream.
     */
    public void format(final ParameterValueGroup values) throws IOException {
        final ParameterDescriptorGroup descriptor = values.getDescriptor();
        synchronized (lock) {
            format(descriptor.getName().getCode(), descriptor, values);
        }
    }

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         * Most of the time, there is no such group.
         */
        if (deferredGroups != null) {
            for (final Object element : deferredGroups) {
                final ParameterValueGroup value;
                final ParameterDescriptorGroup descriptor;
                if (element instanceof ParameterValueGroup) {
                    value = (ParameterValueGroup) element;
                    descriptor = value.getDescriptor();
                } else {
                    value = null;
                    descriptor = (ParameterDescriptorGroup) element;
                }
                out.write(lineSeparator);
                format(name + '/' + descriptor.getName().getCode(), descriptor, value);
            }
        }
    }

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        params = mtFactory.getDefaultParameters("Oblique Mercator");
        setObliqueMercatorParameter(params);
        transform = mtFactory.createParameterizedTransform(params);
        assertEquals(transform.getClass(), ObliqueMercator.class);
        assertEquals(transform, new ObliqueMercator(params));
        ParameterDescriptorGroup descriptor = ((MapProjection) transform).getParameterDescriptors();
        assertTrue (AbstractIdentifiedObject.nameMatches(descriptor, "Oblique Mercator"));
        assertFalse(AbstractIdentifiedObject.nameMatches(descriptor, "Hotine Oblique Mercator"));
        final MathTransform standard = transform;


        params = mtFactory.getDefaultParameters("Hotine Oblique Mercator");

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     * @return A name for this math transform (never {@code null}).
     *
     * @since 2.5
     */
    public String getName() {
        final ParameterDescriptorGroup descriptor = getParameterDescriptors();
        if (descriptor != null) {
            final Identifier identifier = descriptor.getName();
            if (identifier != null) {
                final String code = identifier.getCode();
                if (code != null) {
                    return code;
                }

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     * @throws InvalidParameterValueException if a parameter has an invalid value.
     */
    protected ParameterValueGroup ensureValidValues(final ParameterValueGroup values)
            throws InvalidParameterNameException, InvalidParameterValueException
    {
        final ParameterDescriptorGroup parameters = getParameters();
        final GeneralParameterDescriptor descriptor = values.getDescriptor();
        if (parameters.equals(descriptor)) {
            /*
             * Since the "official" parameter descriptor was used, the descriptor should
             * have already enforced argument validity. Consequently, there is no need to
             * performs the check and we will avoid it as a performance enhancement.
             */
            return values;
        }
        /*
         * Copy the all values from the user-supplied group to the provider-supplied group.
         * The provider group should performs all needed checks. Furthermore, it is suppliers
         * responsability to know about alias (e.g. OGC, EPSG, ESRI), while the user will
         * probably use the name from only one authority. With a copy, we gives a chances to
         * the provider-supplied parameters to uses its alias for understanding the user
         * parameter names.
         */
        final ParameterValueGroup copy = parameters.createValue();
        copy(values, copy);
        return copy;
    }

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