Examples with Expression org.opengis.filter.Expression used on opensource projects

Example 31 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class XMLUtilitiesTest method createRasterSymbolizer.

private static RasterSymbolizer createRasterSymbolizer() {
    String name = "Raster symbolizer name";
    Description desc = STYLE_FACTORY.description("Raster symbolizer title", "Raster symbolizer description");
    Unit uom = Units.METRE;
    String geom = "geom";
    Expression opacity = FILTER_FACTORY.literal(0.5);
    ChannelSelection selection = STYLE_FACTORY.channelSelection(STYLE_FACTORY.selectedChannelType("chanel2", FILTER_FACTORY.literal(1)));
    OverlapBehavior overlap = OverlapBehavior.RANDOM;
    ColorMap colorMap = STYLE_FACTORY.colorMap();
    ContrastEnhancement enchance = STYLE_FACTORY.contrastEnhancement();
    ShadedRelief relief = STYLE_FACTORY.shadedRelief(FILTER_FACTORY.literal(3), true);
    Symbolizer outline = createLineSymbolizer();
    return STYLE_FACTORY.rasterSymbolizer(name, geom, desc, uom, opacity, selection, overlap, colorMap, enchance, relief, outline);
}

Example 32 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class XMLUtilitiesTest method createTextSymbolizer.

private static TextSymbolizer createTextSymbolizer() {
    String name = "Text symbolizer name";
    Description desc = STYLE_FACTORY.description("Text symbolizer title", "Text symbolizer description");
    Unit uom = Units.FOOT;
    String geom = "geom";
    Fill fill = STYLE_FACTORY.fill(Color.ORANGE);
    Halo halo = STYLE_FACTORY.halo(Color.PINK, 12);
    PointPlacement placement = STYLE_FACTORY.pointPlacement();
    Font font = STYLE_FACTORY.font();
    Expression label = FILTER_FACTORY.literal("the feature field name");
    return STYLE_FACTORY.textSymbolizer(name, geom, desc, uom, label, font, placement, halo, fill);
}

Example 33 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class JavaScriptFunction method prepare.

private static Expression[] prepare(final Expression jsFunction) {
    final String str = jsFunction.apply(null).toString();
    final List<Expression> properties = new ArrayList<Expression>();
    properties.add(jsFunction);
    String current = null;
    for (int i = 0, n = str.length(); i < n; i++) {
        char c = str.charAt(i);
        if (current != null) {
            if (END_CHARACTERS.contains(c)) {
                if (!current.isEmpty()) {
                    properties.add(new DefaultPropertyName(current));
                }
                current = null;
            } else {
                current += c;
            }
        } else {
            if (c == VAR_CHARACTER) {
                current = "";
            }
        }
    }
    if (current != null && !current.isEmpty()) {
        properties.add(new DefaultPropertyName(current));
    }
    return properties.toArray(new Expression[properties.size()]);
}

Example 34 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class PropertyExistsFunction method equals.

@Override
public boolean equals(final Object obj) {
    if (obj == this) {
        return true;
    }
    if (!(obj instanceof PropertyExistsFunction)) {
        return false;
    }
    PropertyExistsFunction other = (PropertyExistsFunction) obj;
    if (other.getParameters().size() != this.getParameters().size()) {
        return false;
    }
    if (other.getParameters().size() > 0) {
        final String propName = getPropertyName();
        final Expression otherPropNameExpr = (Expression) other.getParameters().get(0);
        final String otherPropName = getPropertyName(otherPropNameExpr);
        return Objects.equals(propName, otherPropName);
    } else {
        return true;
    }
}

Example 35 with Expression

use of org.opengis.filter.Expression in project geotoolkit by Geomatys.

the class AbstractFunctionFactory method createFunction.

@Override
public Expression createFunction(String name, Literal fallback, Expression... parameters) throws IllegalArgumentException {
    final Class clazz = functions.get(name);
    if (clazz == null) {
        throw new IllegalArgumentException("Unknowed function name : " + name);
    }
    final Constructor construct = clazz.getConstructors()[0];
    final Object[] cstParams = new Object[construct.getParameterTypes().length];
    for (int i = 0; i < cstParams.length && i < parameters.length; i++) {
        cstParams[i] = parameters[i];
    }
    try {
        return (Expression) construct.newInstance(cstParams);
    } catch (InstantiationException | IllegalAccessException | InvocationTargetException ex) {
        throw new IllegalArgumentException("Failed to initialize function wih given parameters : " + name + "  " + ex.getMessage(), ex);
    }
}