Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License as published by the Free Software

 * Foundation; either version 3 of the License, or (at your option) any later

 * version.

 *

 * This program is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more

 * details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc., 51

 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us at info AT

 * gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.mapcontext.layers.vectorial;

import java.awt.Graphics2D;

import java.awt.Point;

import java.awt.geom.AffineTransform;

import java.awt.geom.Point2D;

import java.awt.image.BufferedImage;

import java.util.Iterator;

import java.util.Set;

import java.util.TreeSet;

import org.cresques.cts.ICoordTrans;

import org.cresques.cts.IProjection;

import org.slf4j.LoggerFactory;

import org.gvsig.compat.print.PrintAttributes;

import org.gvsig.fmap.dal.DataStore;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.exception.ReadException;

import org.gvsig.fmap.dal.exception.ReadRuntimeException;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureQuery;

import org.gvsig.fmap.dal.feature.FeatureSet;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.dal.feature.FeatureStoreNotification;

import org.gvsig.fmap.dal.feature.FeatureType;

import org.gvsig.fmap.dal.feature.exception.CreateGeometryException;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.Geometry.TYPES;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

import org.gvsig.fmap.geom.primitive.Circle;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.fmap.geom.type.GeometryType;

import org.gvsig.fmap.geom.type.GeometryTypeNotSupportedException;

import org.gvsig.fmap.geom.type.GeometryTypeNotValidException;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.MapContextManager;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.exceptions.LegendLayerException;

import org.gvsig.fmap.mapcontext.exceptions.LoadLayerException;

import org.gvsig.fmap.mapcontext.exceptions.ReloadLayerException;

import org.gvsig.fmap.mapcontext.exceptions.StartEditionLayerException;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontext.layers.FLyrDefault;

import org.gvsig.fmap.mapcontext.layers.LayerEvent;

import org.gvsig.fmap.mapcontext.layers.SpatialCache;

import org.gvsig.fmap.mapcontext.rendering.legend.ILegend;

import org.gvsig.fmap.mapcontext.rendering.legend.IVectorLegend;

import org.gvsig.fmap.mapcontext.rendering.legend.LegendException;

import org.gvsig.fmap.mapcontext.rendering.legend.events.FeatureDrawnNotification;

import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendChangedEvent;

import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendClearEvent;

import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendContentsChangedListener;

import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendEvent;

import org.gvsig.fmap.mapcontext.rendering.legend.events.SymbolLegendEvent;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelingStrategy;

import org.gvsig.fmap.mapcontext.rendering.symbols.CartographicSupport;

import org.gvsig.metadata.exceptions.MetadataException;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynObjectSet;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.evaluator.Evaluator;

import org.gvsig.tools.exception.BaseException;

import org.gvsig.tools.exception.BaseRuntimeException;

import org.gvsig.tools.locator.LocatorException;

import org.gvsig.tools.observer.Observable;

import org.gvsig.tools.observer.Observer;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

import org.gvsig.tools.task.Cancellable;

import org.gvsig.tools.util.Callable;

/**

 * Capa b?sica Vectorial.

 *

 */

public class FLyrVect extends FLyrDefault implements VectorLayer,

        LegendContentsChangedListener, Observer {

    final static private org.slf4j.Logger logger

            = LoggerFactory.getLogger(FLyrVect.class);

    private final GeometryManager geomManager

            = GeometryLocator.getGeometryManager();

    /**

     * Leyenda de la capa vectorial

     */

    private IVectorLegend legend;

    private int typeShape = -1;

    private FeatureStore featureStore = null;

    private SpatialCache spatialCache = new SpatialCache();

    /**

     * An implementation of gvSIG spatial index

     */

    // protected ISpatialIndex spatialIndex = null;

    private IVectorLegend loadLegend = null;

    private boolean isLabeled;

    protected ILabelingStrategy strategy;

//        private ReprojectDefaultGeometry reprojectTransform;

    private FeatureQuery baseQuery = null;

    public FLyrVect() {

        super();

    }

    public String getTocImageIcon() {

        if (this.isAvailable()) {

            return MapContextLocator.getMapContextManager().getIconLayer(this.getDataStore());

        } else {

            /*

             * data store can be be null,

             * for example, a layer not loaded from persistence

             */

            return "layer-icon-unavailable";

        }

    }

    /**

     * Devuelve el VectorialAdapater de la capa.

     *

     * @return VectorialAdapter.

     */

    public DataStore getDataStore() {

//        if (!this.isAvailable()) {

//            return null;

//        }

        return featureStore;

    }

    /**

     * Asigna el data-store a la capa. Esta operacion no se deneria poder hacer

     * desde fuera de la clase.

     *

     * @param dataStore

     * @throws LoadLayerException

     * @deprecated use {@link #bindToDataStore(DataStore)}

     */

    public void setDataStore(DataStore dataStore) throws LoadLayerException {

        bindToDataStore(dataStore);

    }

    /**

     * Enlaza la capa con el DataStore indicado.

     *

     * @param dataStore

     * @throws LoadLayerException

     */

    protected void bindToDataStore(DataStore dataStore) throws LoadLayerException {

        if (this.featureStore != null && this.featureStore != dataStore) {

            this.featureStore.deleteObserver(this);

        }

        featureStore = (FeatureStore) dataStore;

        MapContextManager mapContextManager

                = MapContextLocator.getMapContextManager();

        //Set the legend

        IVectorLegend legend

                = (IVectorLegend) mapContextManager.getLegend(dataStore);

        if (legend == null) {

            throw new LegendLayerException(this.getName());

        }

        this.setLegend(legend);

        //Set the labeling strategy

        ILabelingStrategy labeler

                = (ILabelingStrategy) mapContextManager.getLabelingStrategy(dataStore);

        if (labeler != null) {

            labeler.setLayer(this);

            this.setLabelingStrategy(labeler);

            this.setIsLabeled(true); // TODO: ac? no s'hauria de detectar si t?

            // etiquetes?????

        }

        this.delegate(dataStore);

        dataStore.addObserver(this);

        ToolsLocator.getDisposableManager().bind(dataStore);

    }

    public Envelope getFullEnvelope() throws ReadException {

        Envelope rAux;

        try {

            rAux = getFeatureStore().getEnvelope();

        } catch (BaseException e) {

            throw new ReadException(getName(), e);

        }

        // Esto es para cuando se crea una capa nueva con el fullExtent de ancho

        // y alto 0.

        if (rAux == null || rAux.isEmpty() || rAux.getMaximum(0) - rAux.getMinimum(0) == 0

                && rAux.getMaximum(1) - rAux.getMinimum(1) == 0) {

            try {

                rAux

                        = geomManager.createEnvelope(0, 0, 90, 90, SUBTYPES.GEOM2D);

            } catch (CreateEnvelopeException e) {

                logger.error("Error creating the envelope", e);

                e.printStackTrace();

            }

        }

        // Si existe reproyecci?n, reproyectar el extent

        ICoordTrans ct = getCoordTrans();

        if (ct != null) {

            boolean originalEnvelopeIsEmpty = rAux.isEmpty();

            rAux = rAux.convert(ct);

            if(!originalEnvelopeIsEmpty && rAux.isEmpty()){

                try {

                    this.setAvailable(false);

                    throw new EnvelopeCantBeInitializedException();

                } catch(EnvelopeCantBeInitializedException e){

                    this.addError(e);

                }

            }

        }

        return rAux;

    }

    public void setBaseQuery(FeatureQuery baseQuery) {

        this.baseQuery = baseQuery;

    }

    @Override

    public FeatureQuery getBaseQuery() {

        return this.baseQuery;

    }

    public void addBaseFilter(Evaluator filter) {

        if( this.baseQuery == null ) {

            this.baseQuery = this.getFeatureStore().createFeatureQuery();

        }

        this.baseQuery.addFilter(filter);

    }

    /**

     * Draws using IFeatureIterator. This method will replace the old draw(...)

     * one.

     *

     * @autor jaume dominguez faus - jaume.dominguez@iver.es

     * @param image

     * @param g

     * @param viewPort

     * @param cancel

     * @param scale

     * @throws ReadDriverException

     */

    public void draw(BufferedImage image,

            Graphics2D g,

            ViewPort viewPort,

            Cancellable cancel,

            double scale) throws ReadException {

        if (legend == null) {

            return;

        }

        if (!this.isWithinScale(scale)) {

            return;

        }

        if (cancel.isCanceled()) {

            return;

        }

        if (spatialCache.isEnabled()) {

            spatialCache.clearAll();

            legend.addDrawingObserver(this);

        }

        FeatureQuery featureQuery = createFeatureQuery();

        try {

            FeatureAttributeDescriptor featureAttributeDescriptor

                    = getFeatureStore().getDefaultFeatureType().getDefaultTimeAttribute();

            if ((viewPort.getTime() != null) && (featureAttributeDescriptor != null)) {

                IntersectsTimeEvaluator intersectsTimeEvaluator

                        = new IntersectsTimeEvaluator(viewPort.getTime(), featureAttributeDescriptor.getName());

                featureQuery.addFilter(intersectsTimeEvaluator);

            }

        } catch (DataException e1) {

            logger.error("Impossible to get the temporal filter", e1);

        }

        try {

            long tini = System.currentTimeMillis();

            legend.draw(image,

                    g,

                    viewPort,

                    cancel,

                    scale,

                    null,

                    getCoordTrans(),

                    getFeatureStore(),

                    featureQuery);

            logger.debug("Layer " + this.getName() + " drawn in "

                    + (System.currentTimeMillis() - tini) + " milliseconds.");

        } catch (LegendException e) {

            this.setAvailable(false);

            this.setError(e);

            throw new ReadException(getName(), e);

        } finally {

            if (spatialCache.isEnabled()) {

                legend.deleteDrawingObserver(this);

            }

        }

    }

    public void print(Graphics2D g,

            ViewPort viewPort,

            Cancellable cancel,

            double scale,

            PrintAttributes properties) throws ReadException {

        if (!this.isWithinScale(scale)) {

            return;

        }

        if (cancel.isCanceled()) {

            return;

        }

        FeatureQuery featureQuery = createFeatureQuery();

        try {

            legend.print(g,

                    viewPort,

                    cancel,

                    scale,

                    null,

                    getCoordTrans(),

                    getFeatureStore(),

                    featureQuery,

                    properties);

        } catch (LegendException e) {

            this.setVisible(false);

            this.setActive(false);

            throw new ReadException(getName(), e);

        }

    }

    public void setLegend(IVectorLegend legend) throws LegendLayerException {

        if (this.legend == legend) {

            return;

        }

        if (this.legend != null && this.legend.equals(legend)) {

            return;

        }

        IVectorLegend oldLegend = this.legend;

        this.legend = legend;

        if (oldLegend != null) {

            oldLegend.removeLegendListener(this);

            oldLegend.deleteDrawingObserver(this);

        }

        if (legend != null) {

            this.legend.addDrawingObserver(this);

            this.legend.addLegendListener(this);

        }

        LegendChangedEvent e = LegendChangedEvent.createLegendChangedEvent(oldLegend, this.legend);

        e.setLayer(this);

        updateDrawVersion();

        callLegendChanged(e);

    }

    /**

     * Devuelve la Leyenda de la capa.

     *

     * @return Leyenda.

     */

    public ILegend getLegend() {

        return legend;

    }

    public int getShapeType() throws ReadException {

        if (typeShape == -1) {

            FeatureType featureType = null;

            try {

                if (getDataStore() != null) {

                    featureType

                            = (((FeatureStore) getDataStore()).getDefaultFeatureType());

                }

            } catch (DataException e) {

                throw new ReadException(getName(), e);

            }

            if (featureType != null) {

                int indexGeom = featureType.getDefaultGeometryAttributeIndex();

                typeShape

                        = featureType.getAttributeDescriptor(indexGeom).getGeometryType();

            }

        }

        return typeShape;

    }

    /**

     * Returns the layer's geometry type

     *

     * @return the geometry type

     *

     * @throws ReadException if there is an error getting the geometry type

     */

    public GeometryType getGeometryType() throws ReadException {

        FeatureType featureType = null;

        try {

            if (getDataStore() != null) {

                featureType

                        = (((FeatureStore) getDataStore()).getDefaultFeatureType());

            }

        } catch (DataException e) {

            throw new ReadException(getName(), e);

        }

        return featureType == null ? null : featureType

                .getDefaultGeometryAttribute().getGeomType();

    }

    public void saveToState(PersistentState state) throws PersistenceException {

        FeatureStore featureStore = null;

        if (!this.isAvailable()) {

            logger.info("The '" + this.getName() + "' layer is not available, it will persist not.");

            return;

        }

        try {

            super.saveToState(state);

            if (getLegend() != null) {

                state.set("legend", getLegend());

            }

            featureStore = getFeatureStore();

            if (featureStore != null) {

                state.set("featureStore", featureStore);

            }

            state.set("isLabeled", isLabeled);

            if (strategy != null) {

                state.set("labelingStrategy", strategy);

            }

            if (getLinkProperties() != null) {

                state.set("linkProperties", getLinkProperties());

            }

            state.set("typeShape", typeShape);

        } catch (PersistenceException ex) {

            logger.warn("Can't persist to state the layer '" + this.getName() + "'.", ex);

            throw ex;

        } catch (RuntimeException ex) {

            logger.warn("Can't persist to state the layer '" + this.getName() + "'.", ex);

            throw ex;

        }

    }

    public void loadFromState(PersistentState state) throws PersistenceException {

        DataStore store = null;

        IVectorLegend vectorLegend = null;

        ILabelingStrategy labelingStrategy = null;

        Boolean isLabeled = Boolean.FALSE;

        try {

            super.loadFromState(state);

            store = (DataStore) state.get("featureStore");

            try {

                this.bindToDataStore(store);

            } catch (LoadLayerException e) {

                throw new PersistenceException("Can't bind layer '" + this.getName() + "' to store '" + store.getFullName() + "'.", e);

            }

            vectorLegend = (IVectorLegend) state.get("legend");

            try {

                this.setLegend(vectorLegend);

            } catch (LegendLayerException e) {

                throw new PersistenceException("Can't set vector legend to the layer.", e);

            }

            try {

                isLabeled = (Boolean) state.get("isLabeled");

                if (isLabeled.booleanValue()) {

                    labelingStrategy = (ILabelingStrategy) state.get("labelingStrategy");

                }

            } catch (Exception ex) {

                throw new PersistenceException("Can't load labeling strategi from persistent state.",

                        ex);

            }

            if (isLabeled.booleanValue()) {

                this.setIsLabeled(true);

                this.setLabelingStrategy(labelingStrategy);

            } else {

                this.setIsLabeled(false);

                this.setLabelingStrategy(null);

            }

            typeShape = state.getInt("typeShape");

        } catch (Throwable e) {

            String storeName = (store == null) ? "unknow" : store.getFullName();

            logger.warn("can't load layer '" + this.getName() + "' (store=" + storeName + ") from persisted state.", e);

            this.setAvailable(false);

            return;

        }

    }

    /**

     * Sobreimplementaci?n del m?todo toString para que las bases de datos

     * identifiquen la capa.

     *

     * @return DOCUMENT ME!

     */

    public String toString() {

        /*

         * Se usa internamente para que la parte de datos identifique de forma

         * un?voca las tablas

         */

        String ret = super.toString();

        return ret ; //"layer" + ret.substring(ret.indexOf('@') + 1);

    }

    public boolean isEditing() {

        FeatureStore fs = getFeatureStore();

        if (fs == null) {

            /*

             * This happens when layer is not available, for example,

             * it was not possible to load from persistence

             */

            return false;

        } else {

            return fs.isEditing();

        }

    }

    public void setEditing(boolean b) throws StartEditionLayerException {

        try {

            throw new RuntimeException();

        } catch (Throwable th) {

            logger.info("This method is deprecated. ", th);

        }

        if (b == super.isEditing()) {

            return;

        }

        super.setEditing(b);

        FeatureStore fs = getFeatureStore();

        if (b) {

            try {

                fs.edit();

            } catch (DataException e) {

                throw new StartEditionLayerException(getName(), e);

            }

        }

        setSpatialCacheEnabled(b);

        callEditionChanged(LayerEvent.createEditionChangedEvent(this, "edition"));

    }

    /**

     * @deprecated Use {@link #getSpatialCache()}

     */

    public void clearSpatialCache() {

        spatialCache.clearAll();

    }

    /**

     * @deprecated Use {@link #getSpatialCache()}

     */

    public boolean isSpatialCacheEnabled() {

        return spatialCache.isEnabled();

    }

    /**

     * @deprecated Use {@link #getSpatialCache()}

     */

    public void setSpatialCacheEnabled(boolean spatialCacheEnabled) {

        spatialCache.setEnabled(spatialCacheEnabled);

    }

    public SpatialCache getSpatialCache() {

        return spatialCache;

    }

    /**

     * Siempre es un numero mayor de 1000

     *

     * @param maxFeatures

     */

    public void setMaxFeaturesInEditionCache(int maxFeatures) {

        if (maxFeatures > spatialCache.getMaxFeatures()) {

            spatialCache.setMaxFeatures(maxFeatures);

        }

    }

    /**

     * This method returns a boolean that is used by the FPopMenu to make

     * visible the properties menu or not. It is visible by default, and if a

     * later don't have to show this menu only has to override this method.

     *

     * @return If the properties menu is visible (or not)

     */

    public boolean isPropertiesMenuVisible() {

        return true;

    }

    public void reload() throws ReloadLayerException {

        super.reload();

        try {

            getFeatureStore().refresh();

        } catch (Exception e) {

            throw new ReloadLayerException(getName(), e);

        }

    }

    protected void setLoadSelection(Object xml) {

        // this.loadSelection = xml;

    }

    protected void setLoadLegend(IVectorLegend legend) {

        this.loadLegend = legend;

    }

    protected void putLoadSelection() {

        // if (this.loadSelection == null) return;

        // try {

        // this.getRecordset().getSelectionSupport().setXMLEntity(this.loadSelection);

        // } catch (ReadDriverException e) {

        // throw new XMLException(e);

        // }

        // this.loadSelection = null;

    }

    protected void putLoadLegend() throws LegendLayerException {

        if (this.loadLegend == null) {

            return;

        }

        this.setLegend(this.loadLegend);

        this.loadLegend = null;

    }

    protected void cleanLoadOptions() {

        this.loadLegend = null;

    }

    public boolean isWritable() {

        return getFeatureStore().allowWrite();

    }

    public FLayer cloneLayer() throws Exception {

        FLyrVect clonedLayer = new FLyrVect();

        clonedLayer.bindToDataStore(getDataStore());

        // if (isJoined()) {

        // clonedLayer.setIsJoined(true);

        // }

        clonedLayer.setVisible(isVisible());

        // clonedLayer.setISpatialIndex(getISpatialIndex());

        clonedLayer.setName(getName());

        clonedLayer.setCoordTrans(getCoordTrans());

        clonedLayer.setLegend((IVectorLegend) getLegend().cloneLegend());

        clonedLayer.setIsLabeled(isLabeled());

        ILabelingStrategy labelingStrategy = getLabelingStrategy();

        if (labelingStrategy != null) {

            clonedLayer.setLabelingStrategy(labelingStrategy);

        }

        return clonedLayer;

    }

    protected boolean isOnePoint(AffineTransform graphicsTransform,

            ViewPort viewPort,

            double dpi,

            CartographicSupport csSym,

            Geometry geom,

            int[] xyCoords) {

        return isOnePoint(graphicsTransform, viewPort, geom, xyCoords)

                && csSym.getCartographicSize(viewPort, dpi, geom) <= 1;

    }

    private boolean isOnePoint(AffineTransform graphicsTransform,

            ViewPort viewPort,

            Geometry geom,

            int[] xyCoords) {

        boolean onePoint = false;

        int type = geom.getType();

        if (type == Geometry.TYPES.NULL) {

            return false;

        }

        if (type != Geometry.TYPES.POINT && type != Geometry.TYPES.MULTIPOINT) {

            Envelope geomBounds = geom.getEnvelope();

            // ICoordTrans ct = getCoordTrans();

            // Se supone que la geometria ya esta reproyectada

            // if (ct!=null) {

            // // geomBounds = ct.getInverted().convert(geomBounds);

            // geomBounds = geomBounds.convert(ct);

            // }

            double dist1Pixel = viewPort.getDist1pixel();

            onePoint

                    = (geomBounds.getLength(0) <= dist1Pixel && geomBounds.getLength(1) <= dist1Pixel);

            if (onePoint) {

                // avoid out of range exceptions

                org.gvsig.fmap.geom.primitive.Point p;

                try {

                    p

                            = geomManager.createPoint(geomBounds.getMinimum(0),

                                    geomBounds.getMinimum(1),

                                    SUBTYPES.GEOM2D);

                    p.transform(viewPort.getAffineTransform());

                    p.transform(graphicsTransform);

                    xyCoords[0] = (int) p.getX();

                    xyCoords[1] = (int) p.getY();

                } catch (org.gvsig.fmap.geom.exception.CreateGeometryException e) {

                    logger.error("Error creating a point", e);

                }

            }

        }

        return onePoint;

    }

    public boolean isLabeled() {

        return isLabeled;

    }

    public void setIsLabeled(boolean isLabeled) {

        this.isLabeled = isLabeled;

    }

    public ILabelingStrategy getLabelingStrategy() {

        return strategy;

    }

    public void setLabelingStrategy(ILabelingStrategy strategy) {

        this.strategy = strategy;

        if (strategy == null) {

            return;

        }

        strategy.setLayer(this);

        updateDrawVersion();

    }

    public void drawLabels(BufferedImage image,

            Graphics2D g,

            ViewPort viewPort,

            Cancellable cancel,

            double scale,

            double dpi) throws ReadException {

        if (strategy != null && isWithinScale(scale)) {

            strategy.draw(image, g, scale, viewPort, cancel, dpi);

        }

    }

    public void printLabels(Graphics2D g,

            ViewPort viewPort,

            Cancellable cancel,

            double scale,

            PrintAttributes properties) throws ReadException {

        if (strategy != null) {

            strategy.print(g, scale, viewPort, cancel, properties);

        }

    }

    /**

     * Return true, because a Vectorial Layer supports HyperLink

     *

     * @deprecated the hiperlink functionaliti is out the layer now

     */

    public boolean allowLinks() {

        return false;

    }

    public void load() throws LoadLayerException {

        super.load();

    }

    public FeatureStore getFeatureStore() {

        return (FeatureStore) getDataStore();

    }

    public FeatureQuery createFeatureQuery() {

        if( this.baseQuery==null ) {

            return this.getFeatureStore().createFeatureQuery();

        }

        try {

            return (FeatureQuery) baseQuery.clone();

        } catch (CloneNotSupportedException ex) {

            throw new RuntimeException(ex);

        }

    }

    /**

     * @deprecated use instead

     * {@link #queryByPoint(org.gvsig.fmap.geom.primitive.Point, double, FeatureType)}

     */

    public FeatureSet queryByPoint(Point2D mapPoint,

            double tol,

            FeatureType featureType) throws DataException {

        logger.warn("Deprecated use of queryByPoint.");

        GeometryManager manager = GeometryLocator.getGeometryManager();

        org.gvsig.fmap.geom.primitive.Point center;

        try {

            center

                    = (org.gvsig.fmap.geom.primitive.Point) manager.create(TYPES.POINT,

                            SUBTYPES.GEOM2D);

            center.setX(mapPoint.getX());

            center.setY(mapPoint.getY());

            Circle circle

                    = (Circle) manager.create(TYPES.CIRCLE, SUBTYPES.GEOM2D);

            circle.setPoints(center, tol);

            return queryByGeometry(circle, featureType);

        } catch (org.gvsig.fmap.geom.exception.CreateGeometryException e) {

            throw new CreateGeometryException(TYPES.CIRCLE, SUBTYPES.GEOM2D, e);

        }

    }

    public FeatureSet queryByPoint(org.gvsig.fmap.geom.primitive.Point point,

            double tol,

            FeatureType featureType) throws DataException {

        GeometryManager manager = GeometryLocator.getGeometryManager();

        try {

            Circle circle

                    = (Circle) manager.create(TYPES.CIRCLE, SUBTYPES.GEOM2D);

            circle.setPoints(point, tol);

            return queryByGeometry(circle, featureType);

        } catch (org.gvsig.fmap.geom.exception.CreateGeometryException e) {

            throw new CreateGeometryException(TYPES.CIRCLE, SUBTYPES.GEOM2D, e);

        }

    }

    /**

     * Input geom must be in the CRS of the view.

     *

     * @param geom

     * @param featureType

     * @return

     * @throws DataException

     */

    public FeatureSet queryByGeometry(Geometry geom, FeatureType featureType) throws DataException {

        FeatureQuery featureQuery = createFeatureQuery();

        String geomName

                = featureStore.getDefaultFeatureType()

                .getDefaultGeometryAttributeName();

        featureQuery.setFeatureType(featureType);

        Geometry query_geo = this.transformToSourceCRS(geom, true);

        IProjection query_proj = getMapContext().getProjection();

        if (this.getCoordTrans() != null) {

            query_proj = this.getCoordTrans().getPOrig();

        }

        IntersectsGeometryEvaluator iee

                = new IntersectsGeometryEvaluator(

                        query_geo,

                        query_proj,

                        featureStore.getDefaultFeatureType(),

                        geomName);

        featureQuery.setFilter(iee);

        featureQuery.setAttributeNames(null);

        return getFeatureStore().getFeatureSet(featureQuery);

    }

    /**

     * It return the {@link FeatureSet} that intersects with the envelope.

     *

     * @param envelope envelope that defines the area for the query.

     * @param featureType only the features with this feature type are used in

     * the query.

     * @return the set of features that intersect with the envelope.

     * @throws DataException

     */

    public FeatureSet queryByEnvelope(Envelope envelope, FeatureType featureType) throws DataException {

        return queryByEnvelope(envelope, featureType, null);

    }

    /**

     * It return the {@link FeatureSet} that intersects with the envelope.

     *

     * @param envelope envelope that defines the area for the query in viewport

     * CRS

     * @param featureType only the features with this feature type are used in

     * the query.

     * @param names the feature attributes that have to be checked.

     * @return the set of features that intersect with the envelope.

     * @throws DataException

     */

    public FeatureSet queryByEnvelope(Envelope envelope,

            FeatureType featureType,

            String[] names) throws DataException {

        FeatureQuery featureQuery = createFeatureQuery();

        if (names == null) {

            featureQuery.setFeatureType(featureType);

        } else {

            featureQuery.setAttributeNames(names);

            featureQuery.setFeatureTypeId(featureType.getId());

        }

        String geomName = featureStore.getDefaultFeatureType()

                .getDefaultGeometryAttributeName();

        Envelope query_env = fromViewPortCRSToSourceCRS(this, envelope);

        IProjection query_proj = getMapContext().getProjection();

        if (this.getCoordTrans() != null) {

            query_proj = this.getCoordTrans().getPOrig();

        }

        IntersectsGeometryEvaluator iee

                = new IntersectsGeometryEvaluator(

                        query_env.getGeometry(), query_proj,

                        featureStore.getDefaultFeatureType(),

                        geomName);

        featureQuery.setFilter(iee);

        return getFeatureStore().getFeatureSet(featureQuery);

    }

    public DynObjectSet getInfo(Point p, double tolerance, Cancellable cancel) throws LoadLayerException,

            DataException {

        return getInfo(p, tolerance, cancel, true);

    }

    public DynObjectSet getInfo(Point p,

            double tolerance,

            Cancellable cancel,

            boolean fast) throws LoadLayerException, DataException {

        Point2D infop = new Point2D.Double(p.x, p.y);

        Point2D pReal = this.getMapContext().getViewPort().toMapPoint(infop);

        return queryByPoint(pReal,

                tolerance,

                getFeatureStore().getDefaultFeatureType()).getDynObjectSet(fast);

    }

    public DynObjectSet getInfo(org.gvsig.fmap.geom.primitive.Point p,

            double tolerance) throws LoadLayerException, DataException {

        return queryByPoint(p, tolerance, getFeatureStore().getDefaultFeatureType()).getDynObjectSet(false);

    }

    @Override

    public void legendCleared(LegendClearEvent event) {

        this.updateDrawVersion();

        LegendChangedEvent e = LegendChangedEvent.createLegendChangedEvent(legend,event);

        this.callLegendChanged(e);

    }

    @Override

    public boolean symbolChanged(SymbolLegendEvent e) {

        this.updateDrawVersion();

        LegendChangedEvent ev = LegendChangedEvent.createLegendChangedEvent(legend, e);

        this.callLegendChanged(ev);

        return true;

    }

    public void update(Observable observable, Object notification) {

        if (observable.equals(this.featureStore)) {

            if (notification instanceof FeatureStoreNotification) {

                FeatureStoreNotification event

                        = (FeatureStoreNotification) notification;

                if (event.getType() == FeatureStoreNotification.AFTER_DELETE

                        || event.getType() == FeatureStoreNotification.AFTER_UNDO

                        || event.getType() == FeatureStoreNotification.AFTER_REDO

                        || event.getType() == FeatureStoreNotification.AFTER_REFRESH

                        || event.getType() == FeatureStoreNotification.AFTER_UPDATE

                        || event.getType() == FeatureStoreNotification.AFTER_UPDATE_TYPE

                        || event.getType() == FeatureStoreNotification.SELECTION_CHANGE

                        || event.getType() == FeatureStoreNotification.AFTER_INSERT) {

                    this.updateDrawVersion();

                } else if (event.getType() == FeatureStoreNotification.AFTER_CANCELEDITING) {

                    setSpatialCacheEnabled(false);

                    callEditionChanged(LayerEvent.createEditionChangedEvent(this, "edition"));

                    this.updateDrawVersion();

                } else if (event.getType() == FeatureStoreNotification.AFTER_STARTEDITING) {

                    setSpatialCacheEnabled(true);

                    callEditionChanged(LayerEvent.createEditionChangedEvent(this, "edition"));

                } else if (event.getType() == FeatureStoreNotification.TRANSFORM_CHANGE) {

                    //If a transform has to be applied, try to reload the layer.

                    try {

                        reload();

                    } catch (ReloadLayerException e) {

                        logger.info("While reloading layer.", e);

                        this.setAvailable(false);

                    }

                } else if (event.getType() == FeatureStoreNotification.RESOURCE_CHANGED) {

                    this.setAvailable(false);

                } else if (event.getType() == FeatureStoreNotification.AFTER_FINISHEDITING) {

                    this.setAvailable(true);

                    setSpatialCacheEnabled(false);

                    callEditionChanged(LayerEvent.createEditionChangedEvent(this, "edition"));

                    this.updateDrawVersion();

                }

            }

        } else if (notification instanceof FeatureDrawnNotification

                && (isEditing() || isLayerToSnap())) {

            // This code is needed in editing mode

            // for all layers involved in snapping

            // (including the layer being edited)

            Geometry geometry

                    = ((FeatureDrawnNotification) notification).getDrawnGeometry();

            spatialCache.insert(geometry.getEnvelope(), geometry);

        }

    }

    private boolean isLayerToSnap() {

        if (this.getMapContext() == null) {

            /*

             * This happens with the graphics layer because it has no parent

             */

            return false;

        } else {

            return this.getMapContext().getLayersToSnap().contains(this);

        }

        /*

         Iterator itersnap = this.getMapContext().getLayersToSnap().iterator();

         Object item = null;

         while (itersnap.hasNext()) {

         item = itersnap.next();

         if (item == this) {

         return true;

         }

         }

         return false;

         */

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.metadata.Metadata#getMetadataChildren()

     */

    public Set getMetadataChildren() {

        Set ret = new TreeSet();

        ret.add(this.featureStore);

        return ret;

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.metadata.Metadata#getMetadataID()

     */

    public Object getMetadataID() throws MetadataException {

        return "Layer(" + this.getName() + "):"

                + this.featureStore.getMetadataID();

    }

    public GeometryType getTypeVectorLayer() throws DataException,

            LocatorException,

            GeometryTypeNotSupportedException,

            GeometryTypeNotValidException {

        // FIXME Esto deberia de pedirse a FType!!!!

        FeatureStore fs = this.getFeatureStore();

        FeatureType fType = fs.getDefaultFeatureType();

        FeatureAttributeDescriptor attr

                = fType.getAttributeDescriptor(fType.getDefaultGeometryAttributeIndex());

        GeometryType geomType

                = GeometryLocator.getGeometryManager()

                .getGeometryType(attr.getGeometryType(),

                        attr.getGeometrySubType());

        return geomType;

    }

    public static class RegisterPersistence implements Callable {

        public Object call() {

            PersistenceManager manager = ToolsLocator.getPersistenceManager();

            DynStruct definition

                    = manager.addDefinition(FLyrVect.class,

                            "FLyrVect",

                            "FLyrVect Persistence definition",

                            null,

                            null);

            definition.extend(PersistenceManager.PERSISTENCE_NAMESPACE,

                    "FLyrDefault");

            definition.addDynFieldObject("legend")

                    .setClassOfValue(IVectorLegend.class)

                    .setMandatory(true);

            definition.addDynFieldObject("featureStore")

                    .setClassOfValue(FeatureStore.class)

                    .setMandatory(true);

            definition.addDynFieldBoolean("isLabeled").setMandatory(true);

            definition.addDynFieldInt("typeShape").setMandatory(true);

            definition.addDynFieldObject("labelingStrategy")

                    .setClassOfValue(ILabelingStrategy.class)

                    .setMandatory(false);

            return Boolean.TRUE;

        }

    }

    protected void doDispose() throws BaseException {

        dispose(featureStore);

        spatialCache.clearAll();

    }

    /**

     * Returns envelope in layer's data source CRS from envelope provided in

     * viewport CRS

     *

     * @param lyr

     * @param env

     * @return

     */

    public static Envelope fromViewPortCRSToSourceCRS(FLayer lyr, Envelope env) {

        if (lyr == null || env == null) {

            return null;

        }

        ICoordTrans ct = lyr.getCoordTrans();

        if (ct == null) {

            return env;

        } else {

            return env.convert(ct.getInverted());

        }

    }

    public Geometry transformToSourceCRS(Geometry geom, boolean clone) {

        return fromViewPortCRSToSourceCRS(this, geom, clone);

    }

    /**

     * Returns geometry in layer's data source CRS from geometry provided in

     * viewport CRS

     *

     * @param lyr

     * @param geo

     * @param clone

     * @return

     * @deprecated use the transformToSourceCRS method of layer.

     */

    public static Geometry fromViewPortCRSToSourceCRS(

            FLayer lyr,

            Geometry geo,

            boolean clone) {

        if (lyr == null || geo == null) {

            return null;

        }

        ICoordTrans ct = lyr.getCoordTrans();

        Geometry resp = geo;

        if (clone) {

            resp = resp.cloneGeometry();

        }

        if (ct != null) {

            resp.reProject(ct.getInverted());

        }

        return resp;

    }

    public Iterator iterator() {

        return this.getFeatureStore().iterator();

    }

    protected class EnvelopeCantBeInitializedException extends BaseException {

        /**

         *

         */

        private static final long serialVersionUID = 4572797479347381552L;

        private final static String MESSAGE_FORMAT = "The envelope can't be initialized, maybe the layer has a wrong projection. Change the projection in layer properties of the add layer dialog to try fix it.";

        private final static String MESSAGE_KEY = "_EnvelopeCantBeInitializedException";

        public EnvelopeCantBeInitializedException() {

            super(MESSAGE_FORMAT, null, MESSAGE_KEY, serialVersionUID);

        }

    }

}