Examples of net.opengis.wcs11.FieldSubsetType

net.opengis.wcs11.FieldSubsetType
A representation of the model object 'Field Subset Type'.
The following features are supported:
- {@link net.opengis.wcs11.FieldSubsetType#getIdentifier Identifier}
- {@link net.opengis.wcs11.FieldSubsetType#getInterpolationType Interpolation Type}
- {@link net.opengis.wcs11.FieldSubsetType#getAxisSubset Axis Subset}
@see net.opengis.wcs11.Wcs111Package#getFieldSubsetType() @model extendedMetaData="name='FieldSubset_._type' kind='elementOnly'" @generated

            throw new WcsException("Multi field coverages are not supported yet",
                    InvalidParameterValue, "RangeSubset");
        }


        // check field identifier
        FieldSubsetType field = (FieldSubsetType) rangeSubset.getFieldSubset().get(0);
        final String fieldId = field.getIdentifier().getValue();
        if (!fieldId.equalsIgnoreCase("contents"))
            throw new WcsException("Unknown field " + fieldId, InvalidParameterValue, "RangeSubset");


        // check interpolation
        String interpolation = field.getInterpolationType();
        if (interpolation != null) {
            boolean interpolationSupported = false;


            if (interpolation.equalsIgnoreCase("nearest")) {
                interpolation = "nearest neighbor";
            }
            for (Iterator it = info.getInterpolationMethods().iterator(); it.hasNext();) {
                String method = (String) it.next();
                if (interpolation.equalsIgnoreCase(method)) {
                    interpolationSupported = true;
                }
            }


            if (!interpolationSupported)
                throw new WcsException(
                        "The requested Interpolation method is not supported by this Coverage.",
                        InvalidParameterValue, "RangeSubset");
        }


        // check axis
        if (field.getAxisSubset().size() > 1) {
            throw new WcsException("Multi axis coverages are not supported yet",
                    InvalidParameterValue, "RangeSubset");
        } else if (field.getAxisSubset().size() == 0)
            return;


        AxisSubsetType axisSubset = (AxisSubsetType) field.getAxisSubset().get(0);
        final String axisId = axisSubset.getIdentifier();
        if (!axisId.equalsIgnoreCase("Bands"))
            throw new WcsException("Unknown axis " + axisId + " in field " + fieldId,
                    InvalidParameterValue, "RangeSubset");

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            if (request.getRangeSubset() != null) {
                if (request.getRangeSubset().getFieldSubset().size() > 1) {
                    throw new WcsException("Multi field coverages are not supported yet");
                }


                FieldSubsetType field = (FieldSubsetType) request.getRangeSubset().getFieldSubset()
                        .get(0);
                interpolationType = field.getInterpolationType();


                // handle axis subset
                if (field.getAxisSubset().size() > 1) {
                    throw new WcsException("Multi axis coverages are not supported yet");
                }
                if (field.getAxisSubset().size() == 1) {
                    // prepare a support structure to quickly get the band index
                    // of a
                    // key
                    List<CoverageDimensionInfo> dimensions = meta.getDimensions();
                    Map<String, Integer> dimensionMap = new HashMap<String, Integer>();
                    for (int i = 0; i < dimensions.size(); i++) {
                        String keyName = dimensions.get(i).getName().replace(' ', '_');
                        dimensionMap.put(keyName, i);
                    }


                    // extract the band indexes
                    AxisSubsetType axisSubset = (AxisSubsetType) field.getAxisSubset().get(0);
                    List keys = axisSubset.getKey();
                    int[] bands = new int[keys.size()];
                    for (int j = 0; j < bands.length; j++) {
                        final String key = (String) keys.get(j);
                        Integer index = dimensionMap.get(key);
                        if (index == null)
                            throw new WcsException("Unknown field/axis/key combination "
                                    + field.getIdentifier().getValue() + "/"
                                    + axisSubset.getIdentifier() + "/" + key);
                        bands[j] = index;
                    }


                    // finally execute the band select

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            throw new WcsException("Multi field coverages are not supported yet",
                    InvalidParameterValue, "RangeSubset");
        }


        // check field identifier
        FieldSubsetType field = (FieldSubsetType) rangeSubset.getFieldSubset().get(0);
        final String fieldId = field.getIdentifier().getValue();
        if (!fieldId.equalsIgnoreCase("contents"))
            throw new WcsException("Unknown field " + fieldId, InvalidParameterValue, "RangeSubset");


        // check interpolation
        String interpolation = field.getInterpolationType();
        if (interpolation != null) {
            boolean interpolationSupported = false;


            if (interpolation.equalsIgnoreCase("nearest")) {
                interpolation = "nearest neighbor";
            } else if (interpolation.equalsIgnoreCase("cubic") || interpolation.equalsIgnoreCase("bicubic")) {
                interpolation = "bicubic";
            } else if (interpolation.equalsIgnoreCase("linear") || interpolation.equalsIgnoreCase("bilinear")) {
                interpolation = "bilinear";
            }


            for (String method : info.getInterpolationMethods()) {
                if (interpolation.equalsIgnoreCase(method)) {
                    interpolationSupported = true;
                    break;
                }
            }


            if (!interpolationSupported)
                throw new WcsException(
                        "The requested Interpolation method is not supported by this Coverage.",
                        InvalidParameterValue, "RangeSubset");
        }


        // check axis
        if (field.getAxisSubset().size() > 1) {
            throw new WcsException("Multi axis coverages are not supported yet",
                    InvalidParameterValue, "RangeSubset");
        } else if (field.getAxisSubset().size() == 0)
            return;


        AxisSubsetType axisSubset = (AxisSubsetType) field.getAxisSubset().get(0);
        final String axisId = axisSubset.getIdentifier();
        if (!axisId.equalsIgnoreCase("Bands"))
            throw new WcsException("Unknown axis " + axisId + " in field " + fieldId,
                    InvalidParameterValue, "RangeSubset");

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        RangeSubsetParser parser = new RangeSubsetParser(new StringReader(value));
        SimpleNode root = parser.RangeSubset();
        RangeSubsetType result = (RangeSubsetType) root.jjtAccept(new RangeSubsetKvpParserVisitor(), null);
        
        for (Iterator it = result.getFieldSubset().iterator(); it.hasNext();) {
            FieldSubsetType type = (FieldSubsetType) it.next();
            String interpolationType = type.getInterpolationType();
            if(interpolationType != null) {
                try {
                    InterpolationMethod method = InterpolationMethod.valueOf(interpolationType);
                } catch(IllegalArgumentException e) {
                    throw new WcsException("Unknown interpolation method " + interpolationType, InvalidParameterValue, "RangeSubset");

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        public Object visit(ASTRangeSubset node, Object data) {
            RangeSubsetType rs = wcsf.createRangeSubsetType();
            for (int i = 0; i < node.jjtGetNumChildren(); i++) {
                ASTFieldSubset fs = (ASTFieldSubset) node.jjtGetChild(i);
                FieldSubsetType fst = (FieldSubsetType) fs.jjtAccept(this, data);
                rs.getFieldSubset().add(fst);
            }
            return rs;
        }

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    @Test
    public void testSimpleFields() throws Exception {
        RangeSubsetType rs = (RangeSubsetType) parser.parse("radiance;temperature");
        assertNotNull(rs);
        assertEquals(2, rs.getFieldSubset().size());
        FieldSubsetType field = (FieldSubsetType) rs.getFieldSubset().get(0);
        assertEquals("radiance", field.getIdentifier().getValue());
        assertEquals(null, field.getInterpolationType());
        field = (FieldSubsetType) rs.getFieldSubset().get(1);
        assertEquals("temperature", field.getIdentifier().getValue());
        assertEquals(null, field.getInterpolationType());
    }

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    @Test
    public void testInterpolation() throws Exception {
        RangeSubsetType rs = (RangeSubsetType) parser.parse("radiance:linear;temperature:nearest");
        assertNotNull(rs);
        assertEquals(2, rs.getFieldSubset().size());
        FieldSubsetType field = (FieldSubsetType) rs.getFieldSubset().get(0);
        assertEquals("radiance", field.getIdentifier().getValue());
        assertEquals("linear", field.getInterpolationType());
        field = (FieldSubsetType) rs.getFieldSubset().get(1);
        assertEquals("temperature", field.getIdentifier().getValue());
        assertEquals("nearest", field.getInterpolationType());
    }

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    @Test
    public void testAxisSingleKey() throws Exception {
        RangeSubsetType rs = (RangeSubsetType) parser.parse("radiance[bands[Red]]");
        assertNotNull(rs);
        assertEquals(1, rs.getFieldSubset().size());
        FieldSubsetType field = (FieldSubsetType) rs.getFieldSubset().get(0);
        assertEquals("radiance", field.getIdentifier().getValue());
        assertEquals(1, field.getAxisSubset().size());
        AxisSubsetType axis = (AxisSubsetType) field.getAxisSubset().get(0);
        assertEquals("bands", axis.getIdentifier());
        List keys = axis.getKey();
        assertEquals(1, keys.size());
        assertEquals("Red", keys.get(0));
    }

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    public void testAxisKeys() throws Exception {
        RangeSubsetType rs = (RangeSubsetType) parser.parse("radiance[bands[Red,Green,Blue]]");
        assertNotNull(rs);
        assertEquals(1, rs.getFieldSubset().size());
        FieldSubsetType field = (FieldSubsetType) rs.getFieldSubset().get(0);
        assertEquals("radiance", field.getIdentifier().getValue());
        assertEquals(1, field.getAxisSubset().size());
        AxisSubsetType axis = (AxisSubsetType) field.getAxisSubset().get(0);
        assertEquals("bands", axis.getIdentifier());
        List keys = axis.getKey();
        assertEquals(3, keys.size());
        assertEquals("Red", keys.get(0));
        assertEquals("Green", keys.get(1));

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                "  <wcs:Output format=\"image/tiff\"/>\r\n" + //
                "</wcs:GetCoverage>";


        GetCoverageType gc = (GetCoverageType) reader.read(null, new StringReader(request), null);
        assertEquals(1, gc.getRangeSubset().getFieldSubset().size());
        FieldSubsetType field = (FieldSubsetType) gc.getRangeSubset().getFieldSubset().get(0);
        assertEquals("BlueMarble", field.getIdentifier().getValue());
        assertEquals("bicubic", field.getInterpolationType());
        assertEquals(1, field.getAxisSubset().size());
        AxisSubsetType axis = (AxisSubsetType) field.getAxisSubset().get(0);
        assertEquals("Bands", axis.getIdentifier());
        assertEquals(1, axis.getKey().size());
        String key = (String) axis.getKey().get(0);
        assertEquals("Red_band", key);
    }

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