Examples of StyledLayerDescriptor

org.geotools.styling.StyledLayerDescriptor
Holds styling information (from a StyleLayerDescriptor document).
This interface is bound to version 1.0 of the SLD specification.

For many of us in geotools this is the reason we came along for the ride - a pretty picture. For documentation on the use of this class please consult the SLD 1.0 specification.

We may experiment with our own (or SLD 1.1) ideas but will mark such experiments for you. This is only an issue of you are considering writing out these objects for interoptability with other systems.

General stratagy for supporting multiple SLD versions (and experiments):
- These interfaces will reflect the current published specification
- Our implementations will be BIGGER and more capabile then any one specification
- We cannot defined explicit interfaces tracking each version until we move to Java 5 (perferably GeoAPI would hold these anyways)
- We can provided javadocs indicating extentions, and isolate these using the normal java convention: TextSymbolizer and TextSymbolizer2 (In short you will have to go out of your way to work with a hack or experiment, you won't depend on one by accident)
- We can use Factories (aka SLD1Factory and SLD1_1Factory and SEFactory) to support the creation of conformant datastructures. Code (such as user interfaces) can be parameratized with these factories when they need to confirm to an exact version supported by an individual service. We hope that specifications are always adative, and will be forced to throw unsupported exceptions when functionality is removed from a specification.
@author Ian Turton, CCG @author James Macgill, CCG @author Jody Garnett, Refractions Research @source $URL$ @version SLD 1.0 @since GeoTools 2.0

Examples of org.geotools.styling.StyledLayerDescriptor

        try {
            Parser parser = new Parser( config );
            reader = new FileReader(file);
            Object object = parser.parse( reader );
            if( object instanceof StyledLayerDescriptor){
                StyledLayerDescriptor sld = (StyledLayerDescriptor) object;
                return sld;
            }
            else if ( object instanceof NamedStyle ){
                NamedStyle style = (NamedStyle) object;
                StyledLayerDescriptor sld = createDefaultSLD( style );
                return sld;
            }
        }
        catch(Exception ignore){
            // we are ignoring this error and will try the more forgiving option below
            UiPlugin.trace(SLDs.class,"SLD 1.1 configuration failed to parse "+file, ignore);
        }
        finally {
            if( reader != null){
                reader.close();
            }
        }
        // parse it up
        SLDParser parser = new SLDParser(styleFactory);
        try {
            parser.setInput(file);
            StyledLayerDescriptor sld = parser.parseSLD();
            return sld;
        } catch (FileNotFoundException e) {
            return null; // well that is unexpected since f.exists()
        }
    }

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Examples of org.geotools.styling.StyledLayerDescriptor

        try {
            Parser parser = new Parser( config );
            input = url.openStream();
            Object object = parser.parse( input );
            if( object instanceof StyledLayerDescriptor){
                StyledLayerDescriptor sld = (StyledLayerDescriptor) object;
                Style[] array = SLDs.styles( sld );
                if( array != null && array.length > 0 ){
                    return array[0];
                }
            }

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Examples of org.geotools.styling.StyledLayerDescriptor

        try {
            Parser parser = new Parser( config );
            reader = new FileReader(file);
            Object object = parser.parse( reader );
            if( object instanceof StyledLayerDescriptor){
                StyledLayerDescriptor sld = (StyledLayerDescriptor) object;
                Style[] array = SLDs.styles( sld );
                if( array != null && array.length > 0 ){
                    return array[0];
                }
            }

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Examples of org.geotools.styling.StyledLayerDescriptor

     * @see net.refractions.project.internal.render.SelectionStyleContent#createDefaultStyledLayerDescriptor
     * @param style
     * @return SLD
     */
    public static StyledLayerDescriptor createDefaultSLD(Style style) {
        StyledLayerDescriptor sld = sf.createStyledLayerDescriptor();
        UserLayer layer = sf.createUserLayer();
        //FeatureTypeConstraint ftc = styleFactory.createFeatureTypeConstraint(null, Filter.INCLUDE, null);
        layer.setLayerFeatureConstraints(new FeatureTypeConstraint[] {null});
        sld.addStyledLayer(layer);
        layer.addUserStyle(style);
        return sld;
    }

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Examples of org.geotools.styling.StyledLayerDescriptor

     * @param style the style to convert.
     * @return the style string.
     * @throws Exception
     */
    public String toXml() throws Exception {
        StyledLayerDescriptor sld = sf.createStyledLayerDescriptor();
        UserLayer layer = sf.createUserLayer();
        layer.setLayerFeatureConstraints(new FeatureTypeConstraint[]{null});
        sld.addStyledLayer(layer);
        layer.addUserStyle(style);


        SLDTransformer aTransformer = new SLDTransformer();
        aTransformer.setIndentation(4);
        String xml = aTransformer.transform(sld);

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Examples of org.geotools.styling.StyledLayerDescriptor

        });


        List<StyleWrapper> newStylesList = new ArrayList<StyleWrapper>();
        for( File file : sldFilesArray ) {
            try {
                StyledLayerDescriptor sld = readStyle(file);
                Style style = SLDs.getDefaultStyle(sld);
                String name = FilenameUtils.removeExtension(file.getName());
                style.setName(name);


                StyleWrapper styleWrapper = new StyleWrapper(style);

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Examples of org.geotools.styling.StyledLayerDescriptor

     * @return the styled layer descriptor.
     * @throws IOException
     */
    public static StyledLayerDescriptor readStyle( File file ) throws IOException {
        SLDParser stylereader = new SLDParser(sf, file);
        StyledLayerDescriptor sld = stylereader.parseSLD();
        return sld;
    }

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Examples of org.geotools.styling.StyledLayerDescriptor

     * @param style the style to convert.
     * @return the style string.
     * @throws Exception
     */
    public static String styleToString( Style style ) throws Exception {
        StyledLayerDescriptor sld = sf.createStyledLayerDescriptor();
        UserLayer layer = sf.createUserLayer();
        layer.setLayerFeatureConstraints(new FeatureTypeConstraint[]{null});
        sld.addStyledLayer(layer);
        layer.addUserStyle(style);


        SLDTransformer aTransformer = new SLDTransformer();
        aTransformer.setIndentation(4);
        String xml = aTransformer.transform(sld);

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Examples of org.geotools.styling.StyledLayerDescriptor

        if (name.toLowerCase().endsWith(".png")) {
            exGraphic = sf.createExternalGraphic(graphicsPath.toURI().toURL(), "image/png");
        } else if (name.toLowerCase().endsWith(".svg")) {
            exGraphic = sf.createExternalGraphic(graphicsPath.toURI().toURL(), "image/svg+xml");
        } else if (name.toLowerCase().endsWith(".sld")) {
            StyledLayerDescriptor sld = readStyle(graphicsPath);
            Style style = SLDs.getDefaultStyle(sld);
            return new StyleWrapper(style);
        }


        if (exGraphic == null) {

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Examples of org.geotools.styling.StyledLayerDescriptor

    public static Style parse(URL url) throws IOException {
        return SLDs.parseStyle(url);
    }
    
    public static StyledLayerDescriptor createDefaultStyledLayerDescriptor() {
        StyledLayerDescriptor sld = styleFactory.createStyledLayerDescriptor();
        return sld;
    }

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