Examples with Hints org.geotoolkit.factory.Hints used on opensource projects

Example 26 with Hints

use of org.geotoolkit.factory.Hints in project geotoolkit by Geomatys.

the class AbstractFeatureCollection method subset.

@Override
public FeatureCollection subset(final Query remainingParameters) throws DataStoreException {
    FeatureCollection result = this;
    final long start = remainingParameters.getOffset();
    final long max = remainingParameters.getLimit().orElse(-1);
    Filter filter = remainingParameters.getSelection();
    if (filter == null)
        filter = Filter.include();
    final String[] properties = remainingParameters.getPropertyNames();
    final SortProperty[] sorts = QueryUtilities.getSortProperties(remainingParameters.getSortBy());
    final double[] resampling = remainingParameters.getResolution();
    final Hints hints = remainingParameters.getHints();
    // that may cause out of memory errors.
    if (sorts != null && sorts.length != 0) {
        result = FeatureStreams.sort(result, sorts);
    }
    // we must keep the filter first since it impacts the start index and max feature
    if (filter != null && filter != Filter.include()) {
        if (filter == Filter.exclude()) {
            // filter that exclude everything, use optimzed reader
            result = FeatureStreams.emptyCollection(result);
        } else {
            result = FeatureStreams.filter(result, filter);
        }
    }
    // wrap start index -----------------------------------------------------
    if (start > 0) {
        result = FeatureStreams.skip(result, (int) start);
    }
    // wrap max -------------------------------------------------------------
    if (max != -1) {
        if (max == 0) {
            // use an optimized reader
            result = FeatureStreams.emptyCollection(result);
        } else {
            result = FeatureStreams.limit(result, (int) max);
        }
    }
    // wrap properties --------------------
    final FeatureType original = result.getType();
    FeatureType mask = original;
    if (properties != null && FeatureTypeExt.isAllProperties(original, properties)) {
        try {
            result = FeatureStreams.decorate(result, new ViewMapper(mask, properties));
        } catch (MismatchedFeatureException | IllegalStateException ex) {
            throw new DataStoreException(ex);
        }
    }
    // wrap resampling ------------------------------------------------------
    if (resampling != null) {
        final GeometryScaleTransformer trs = new GeometryScaleTransformer(resampling[0], resampling[1]);
        final TransformMapper ttype = new TransformMapper(result.getType(), trs);
        result = FeatureStreams.decorate(result, ttype);
    }
    return result;
}

Example 27 with Hints

use of org.geotoolkit.factory.Hints in project geotoolkit by Geomatys.

the class DefaultSelectorFeatureCollection method iterator.

/**
 * {@inheritDoc }
 */
@Override
public FeatureIterator iterator(final Hints hints) throws FeatureStoreRuntimeException {
    final Query iteQuery;
    if (hints != null) {
        final Query qb = new Query();
        qb.copy(this.query);
        final Hints hts = new Hints(this.query.getHints());
        hts.add(hints);
        qb.setHints(hts);
        iteQuery = qb;
    } else {
        iteQuery = this.query;
    }
    try {
        return getSession().getFeatureIterator(iteQuery);
    } catch (DataStoreException ex) {
        throw new FeatureStoreRuntimeException(ex);
    }
}

Example 28 with Hints

use of org.geotoolkit.factory.Hints in project geotoolkit by Geomatys.

the class RenderingRoutines method prepareQuery.

/**
 * Creates an optimal query to send to the datastore, knowing which properties are knowned and
 * the appropriate bounding box to filter.
 */
public static Query prepareQuery(final RenderingContext2D renderingContext, FeatureSet fs, final MapLayer layer, final Set<String> styleRequieredAtts, final List<Rule> rules, double symbolsMargin) throws PortrayalException {
    final FeatureType schema;
    try {
        schema = fs.getType();
    } catch (DataStoreException ex) {
        throw new PortrayalException(ex.getMessage(), ex);
    }
    // Note: do not use layer boundary to define the target bbox, because it can be expensive.
    // Anyway, the target resource will be better to determine clipping between rendering boundaries and its own.
    final Envelope bbox = optimizeBBox(renderingContext, fs, symbolsMargin);
    final CoordinateReferenceSystem layerCRS = FeatureExt.getCRS(schema);
    final RenderingHints hints = renderingContext.getRenderingHints();
    /*
         * To restrict queried values to the rendering area, we must identify what geometries are used by the style.
         * For each applied symbol, there are 3 possible cases:
         * - if the rule uses default geometries, they will be added to the geometry property list after the loop
         * - The geometric expression is a value reference, we can safely register it in geometric properties. The
         *   reference xpath is unwrapped in a set to ensure we won't create any doublon filters.
         * - If the geometry property is a complex expression(Ex: a value computed from non geometric fields), we keep
         *   it as is to apply a filter directly upon it. Note that even if it's an expression derived from geometric
         *   fields, we cannot apply spatial filter on them, because the expression could drastically change topology.
         *   For example, if the expression is 'buffer', the result geometry would be larger than any of its operands.
         *   TODO: such cases are maybe manageable by replacing bbox filter by a distance filter based upon the buffer
         *   distance. But would it do more good than harm ?
         */
    boolean isDefaultGeometryNeeded = rules == null || rules.isEmpty();
    final Set<String> geomProperties = new HashSet<>();
    final Set<Expression> complexProperties = new HashSet<>();
    if (rules != null) {
        for (Rule r : rules) {
            for (Symbolizer s : r.symbolizers()) {
                final Expression expGeom = s.getGeometry();
                if (isNil(expGeom))
                    isDefaultGeometryNeeded = true;
                else if (expGeom instanceof ValueReference)
                    geomProperties.add(((ValueReference) expGeom).getXPath());
                else
                    complexProperties.add(expGeom);
            }
        }
    }
    if (isDefaultGeometryNeeded) {
        try {
            final PropertyType defaultGeometry = FeatureExt.getDefaultGeometry(schema);
            final String geomName = Features.getLinkTarget(defaultGeometry).orElseGet(() -> defaultGeometry.getName().toString());
            geomProperties.add(geomName);
        } catch (PropertyNotFoundException e) {
            throw new PortrayalException("Default geometry cannot be determined. " + "However, it is needed to properly define filtering rules.");
        } catch (IllegalStateException e) {
            // If there's multiple geometric properties, and no primary one, we will use them all
            schema.getProperties(true).stream().filter(p -> !Features.getLinkTarget(p).isPresent()).filter(AttributeConvention::isGeometryAttribute).map(p -> p.getName().toString()).forEach(geomProperties::add);
        }
    }
    if (!complexProperties.isEmpty()) {
        LOGGER.fine("A style rule uses complex geometric properties. It can severly affect performance");
    }
    final Optional<Filter> spatialFilter = Stream.concat(geomProperties.stream().map(FILTER_FACTORY::property), complexProperties.stream()).<Filter>map(expression -> FILTER_FACTORY.bbox(expression, bbox)).reduce(FILTER_FACTORY::or);
    Filter userFilter = null;
    // concatenate geographic filter with data filter if there is one
    if (layer != null) {
        Query query = layer.getQuery();
        if (query instanceof FeatureQuery) {
            userFilter = ((FeatureQuery) query).getSelection();
        }
    }
    Filter filter;
    if (spatialFilter.isPresent()) {
        if (userFilter == null)
            filter = spatialFilter.get();
        else
            // Note: we give priority to the spatial filter here, because it is our main use case: rendering is driven
            // by bounding box.
            filter = FILTER_FACTORY.and(spatialFilter.get(), userFilter);
    } else if (userFilter == null) {
        throw new PortrayalException("No spatial filter can be determined from style rules, and no user filter specified." + "We refuse dataset full-scan. To authorize it, manually specify Filter 'INCLUDE' on your map layer.");
    } else {
        LOGGER.warning("Spatial filter cannot be determined for rendering. However, user has provided a custom filter that we'll use as sole filtering policy");
        filter = userFilter;
    }
    final Set<String> copy = new HashSet<>();
    final FeatureType expected;
    final String[] atts;
    if (styleRequieredAtts == null) {
        // all properties are requiered
        expected = schema;
        atts = null;
    } else {
        final Set<String> attributs = styleRequieredAtts;
        copy.addAll(attributs);
        copy.addAll(geomProperties);
        try {
            // always include the identifier if it exist
            schema.getProperty(AttributeConvention.IDENTIFIER);
            copy.add(AttributeConvention.IDENTIFIER);
        } catch (PropertyNotFoundException ex) {
        // no id, ignore it
        }
        atts = copy.toArray(new String[copy.size()]);
        // then we reduce it to the first parent property.
        for (int i = 0; i < atts.length; i++) {
            String attName = atts[i];
            int index = attName.indexOf('/');
            if (index == 0) {
                // remove all xpath elements
                // remove first slash
                attName = attName.substring(1);
                final Pattern pattern = Pattern.compile("(\\{[^\\{\\}]*\\})|(\\[[^\\[\\]]*\\])|/{1}");
                final Matcher matcher = pattern.matcher(attName);
                final StringBuilder sb = new StringBuilder();
                int position = 0;
                while (matcher.find()) {
                    final String match = matcher.group();
                    sb.append(attName.substring(position, matcher.start()));
                    position = matcher.end();
                    if (match.charAt(0) == '/') {
                        // we don't query precisely sub elements
                        position = attName.length();
                        break;
                    } else if (match.charAt(0) == '{') {
                        sb.append(match);
                    } else if (match.charAt(0) == '[') {
                    // strip indexes or xpath searches
                    }
                }
                sb.append(attName.substring(position));
                atts[i] = sb.toString();
            }
        }
        try {
            expected = new ViewMapper(schema, atts).getMappedType();
        } catch (MismatchedFeatureException ex) {
            throw new PortrayalException(ex);
        }
    }
    // combine the filter with rule filters----------------------------------
    if (rules != null) {
        List<Filter<Object>> rulefilters = new ArrayList<>();
        for (Rule rule : rules) {
            if (rule.isElseFilter()) {
                // we can't append styling filters, an else rule match all features
                rulefilters = null;
                break;
            }
            final Filter rf = rule.getFilter();
            if (rf == null || rf == Filter.include()) {
                // we can't append styling filters, this rule matchs all features.
                rulefilters = null;
                break;
            }
            rulefilters.add(rf);
        }
        if (rulefilters != null) {
            final Filter combined;
            if (rulefilters.size() == 1) {
                // we can optimze here, since we pass the filter on the query, we can remove
                // the filter on the rule.
                final MutableRule mr = StyleUtilities.copy(rules.get(0));
                mr.setFilter(null);
                rules.set(0, mr);
                combined = rulefilters.get(0);
            } else {
                combined = FILTER_FACTORY.or(rulefilters);
            }
            if (filter != Filter.include()) {
                filter = FILTER_FACTORY.and(filter, combined);
            } else {
                filter = combined;
            }
        }
    }
    // optimize the filter---------------------------------------------------
    filter = FilterUtilities.prepare(filter, Feature.class, expected);
    final Hints queryHints = new Hints();
    final org.geotoolkit.storage.feature.query.Query qb = new org.geotoolkit.storage.feature.query.Query();
    qb.setTypeName(schema.getName());
    qb.setSelection(filter);
    qb.setProperties(atts);
    // resampling and ignore flag only works when we know the layer crs
    if (layerCRS != null) {
        // add resampling -------------------------------------------------------
        Boolean resample = (hints == null) ? null : (Boolean) hints.get(GO2Hints.KEY_GENERALIZE);
        if (!Boolean.FALSE.equals(resample)) {
            // we only disable resampling if it is explictly specified
            double[] res = renderingContext.getResolution(layerCRS);
            // adjust with the generalization factor
            final Number n = (hints == null) ? null : (Number) hints.get(GO2Hints.KEY_GENERALIZE_FACTOR);
            final double factor;
            if (n != null) {
                factor = n.doubleValue();
            } else {
                factor = GO2Hints.GENERALIZE_FACTOR_DEFAULT.doubleValue();
            }
            res[0] *= factor;
            res[1] *= factor;
            qb.setResolution(res);
            try {
                res = renderingContext.getResolution(CRS.forCode("EPSG:3395"));
                res[0] *= factor;
                res[1] *= factor;
                qb.setLinearResolution(Quantities.create(res[0], Units.METRE));
            } catch (FactoryException ex) {
                throw new PortrayalException(ex.getMessage(), ex);
            }
        }
    // add ignore flag ------------------------------------------------------
    // TODO this is efficient but erases values, when plenty of then are to be rendered
    // we should find another way to handle this
    // if(!GO2Utilities.visibleMargin(rules, 1.01f, renderingContext)){
    // //style does not expend itself further than the feature geometry
    // //that mean geometries smaller than a pixel will not be renderer or barely visible
    // queryHints.put(Hints.KEY_IGNORE_SMALL_FEATURES, renderingContext.getResolution(layerCRS));
    // }
    }
    // add reprojection -----------------------------------------------------
    // we don't reproject, the reprojection may produce curves but JTS can not represent those.
    // so we generate those curves in java2d shapes by doing the transformation ourself.
    // TODO wait for a new geometry implementation
    // qb.setCRS(renderingContext.getObjectiveCRS2D());
    // set the acumulated hints
    qb.setHints(queryHints);
    return qb;
}

Example 29 with Hints

use of org.geotoolkit.factory.Hints in project geotoolkit by Geomatys.

the class PortrayalServiceTest method testLongitudeFirst.

@Test
public void testLongitudeFirst() throws Exception {
    final int[] pixel = new int[4];
    final int[] red = new int[] { 255, 0, 0, 255 };
    final int[] white = new int[] { 255, 255, 255, 255 };
    final Hints hints = new Hints();
    hints.put(GO2Hints.KEY_COLOR_MODEL, ColorModel.getRGBdefault());
    // create a map context with a layer that will cover the entire area we will ask for
    final GridCoverage coverage;
    {
        final GeneralEnvelope covenv = new GeneralEnvelope(CommonCRS.WGS84.normalizedGeographic());
        covenv.setRange(0, -180, 180);
        covenv.setRange(1, -90, 90);
        final BufferedImage img = new BufferedImage(360, 180, BufferedImage.TYPE_INT_ARGB);
        final Graphics2D g = img.createGraphics();
        g.setColor(Color.RED);
        g.fill(new Rectangle(0, 0, 360, 180));
        final GridGeometry grid = new GridGeometry(new GridExtent(360, 180), covenv, GridOrientation.HOMOTHETY);
        final List<SampleDimension> bands = new ArrayList<>();
        bands.add(new SampleDimension.Builder().setName("r").build());
        bands.add(new SampleDimension.Builder().setName("g").build());
        bands.add(new SampleDimension.Builder().setName("b").build());
        bands.add(new SampleDimension.Builder().setName("a").build());
        coverage = new GridCoverage2D(grid, bands, img);
    }
    final MapLayer layer = MapBuilder.createCoverageLayer(coverage, SF.style(SF.rasterSymbolizer()), "unnamed");
    final MapLayers context = MapBuilder.createContext();
    context.getComponents().add(layer);
    // sanity test, image should be a red vertical band in the middle
    final CoordinateReferenceSystem epsg4326 = CommonCRS.WGS84.geographic();
    GeneralEnvelope env = new GeneralEnvelope(epsg4326);
    env.setRange(0, -180, 180);
    env.setRange(1, -180, 180);
    CanvasDef cdef = new CanvasDef(new Dimension(360, 360), env);
    cdef.setBackground(Color.WHITE);
    BufferedImage buffer = DefaultPortrayalService.portray(cdef, new SceneDef(context, hints));
    assertEquals(360, buffer.getWidth());
    assertEquals(360, buffer.getHeight());
    WritableRaster raster = buffer.getRaster();
    raster.getPixel(0, 0, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(359, 0, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(359, 359, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(0, 359, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(180, 0, pixel);
    assertArrayEquals(red, pixel);
    raster.getPixel(180, 359, pixel);
    assertArrayEquals(red, pixel);
    raster.getPixel(0, 180, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(359, 180, pixel);
    assertArrayEquals(white, pixel);
    // east=horizontal test, image should be a red horizontal band in the middle
    cdef = new CanvasDef(new Dimension(360, 360), env);
    cdef.setBackground(Color.WHITE);
    cdef.setLongitudeFirst();
    buffer = DefaultPortrayalService.portray(cdef, new SceneDef(context, hints));
    // ImageIO.write(buffer, "png", new File("flip.png"));
    assertEquals(360, buffer.getWidth());
    assertEquals(360, buffer.getHeight());
    raster = buffer.getRaster();
    raster.getPixel(0, 0, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(359, 0, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(359, 359, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(0, 359, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(180, 0, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(180, 359, pixel);
    assertArrayEquals(white, pixel);
    raster.getPixel(0, 180, pixel);
    assertArrayEquals(red, pixel);
    raster.getPixel(359, 180, pixel);
    assertArrayEquals(red, pixel);
}

Example 30 with Hints

use of org.geotoolkit.factory.Hints in project geotoolkit by Geomatys.

the class MokSymbolizerTest method testSymbolizer.

@Test
public void testSymbolizer() throws PortrayalException {
    final CanvasDef cdef = new CanvasDef(new Dimension(500, 500), env);
    // test normal pass
    Hints hints = new Hints();
    hints.put(GO2Hints.KEY_MULTI_THREAD, Boolean.FALSE);
    MokSymbolizerRenderer.called = 0;
    cdef.setBackground(Color.WHITE);
    DefaultPortrayalService.portray(cdef, new SceneDef(context, hints));
    assertEquals(5, MokSymbolizerRenderer.called);
    // test multithread
    hints = new Hints();
    hints.put(GO2Hints.KEY_MULTI_THREAD, Boolean.TRUE);
    MokSymbolizerRenderer.called = 0;
    DefaultPortrayalService.portray(cdef, new SceneDef(context, hints));
    assertEquals(5, MokSymbolizerRenderer.called);
}