Application: gvSIG desktop » gvSIG 3D

package org.gvsig.view3d.vector.lib.impl.vector;

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

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

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

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

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

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

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

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

import org.gvsig.view3d.lib.api.exception.LoadException;

import org.gvsig.view3d.lib.api.loader.Loader;

import org.gvsig.view3d.lib.api.loader.LoaderParameters;

import org.gvsig.view3d.vector.lib.api.VectorLoaderParameters;

/**

 * 

 * @author <a href="mailto:lmarques@disid.com">Lluis Marques</a>

 *

 */

public class DefaultVectorLoader implements Loader {

    @Override

    public Object load(LoaderParameters parameters) throws LoadException {

        if (parameters == null) {

            throw new IllegalArgumentException("Can not load layer, parameters can not be null");

        }

        if (!(parameters instanceof VectorLoaderParameters)) {

            throw new IllegalArgumentException(

                "Can not load layer, parameters must implements VectorLoaderParameter interface");

        }

        FLayer layer = parameters.getLayer();

        if (!(layer instanceof FLyrVect)) {

            throw new IllegalArgumentException("Can not load layer, only vector layers can be load as 'Vector'");

        }

        FLyrVect layerVect = (FLyrVect) layer;

        FeatureStore featureStore = layerVect.getFeatureStore();

        IVectorLegend vectorLegend = null;

        if (layerVect.getLegend() instanceof IVectorLegend) {

            vectorLegend = (IVectorLegend) layerVect.getLegend();

        }

        FeatureType featureType = null;

        try {

            featureType = featureStore.getDefaultFeatureType();

        } catch (DataException e) {

            // TODO Auto-generated catch block

            throw new LoadException(null, e);

        }

        GeometryType geomType = featureType.getDefaultGeometryAttribute().getGeomType();

        if(geomType.isTypeOf(TYPES.LINE) || geomType.isTypeOf(TYPES.MULTILINE)) {

            return new DefaultVectorLineRenderableLayer((VectorLoaderParameters) parameters, featureStore, vectorLegend);

        } else if(geomType.isTypeOf(TYPES.POINT) || geomType.isTypeOf(TYPES.MULTIPOINT)) {

            return new DefeaultVectorPointRenderableLayer((VectorLoaderParameters) parameters, featureStore, vectorLegend);

        } else {

            return null;

        }

    }

}