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.symbology.fmap.mapcontext.rendering.legend.driver.impl;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

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.exceptions.IncompatibleLegendReadException;

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

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

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

import org.gvsig.fmap.mapcontext.rendering.legend.driver.ILegendReader;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.locator.LocatorException;

import org.gvsig.tools.persistence.PersistenceManager;

/**

 * Legend reader that uses the standard persistence

 */

public class PersistenceBasedLegendReader implements ILegendReader {

    public ILegend read(File inFile, int geometryType)

        throws ReadLegendException, IncompatibleLegendReadException,

        IOException {

        InputStream istr = null;

        istr = new FileInputStream(inFile);

        ILegend resp = null;

        try {

            PersistenceManager manager = ToolsLocator.getPersistenceManager();

            Object inobj = manager.getObject(istr);

            resp = (ILegend) inobj; 

        } catch (Exception exc) {

            throw new ReadLegendException(inFile, exc);

        }

        istr.close();

        if (resp instanceof IVectorLegend) {

            IVectorLegend vleg = (IVectorLegend) resp;

            GeometryType foundgt = null;

            try {

                foundgt = GeometryLocator.getGeometryManager().getGeometryType(

                vleg.getShapeType(), Geometry.SUBTYPES.GEOM2D);

            } catch (Exception e) {

                throw new IncompatibleLegendReadException(

                    inFile, geometryType, e);

            }

            if (geometryType != Geometry.TYPES.GEOMETRY &&

                !foundgt.isTypeOf(geometryType)) {

                throw new IncompatibleLegendReadException(

                    inFile,

                    geometryType,

                    new Exception("Geometry type found: " + vleg.getShapeType()));

            }

        }

        return resp;

    }

}