Application: gvSIG desktop

/*

 * gvSIG. Desktop Geographic Information System.

 * 

 * Copyright (C) 2007-2020 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, see <https://www.gnu.org/licenses/>. 

 * 

 * 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.geom.jts.json;

import javax.json.JsonObject;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.json.Json;

import org.gvsig.json.JsonManager;

import org.gvsig.json.JsonObjectBuilder;

import org.gvsig.tools.util.IsApplicable;

/**

 *

 * @author gvSIG Team

 */

@SuppressWarnings("UseSpecificCatch")

public class GeometryJsonSerializer implements JsonManager.JsonSerializer, IsApplicable {

    @Override

    public Class getObjectClass() {

        return Geometry.class;

    }

    @Override

    public Object toObject(JsonObject json) {

        try {

            String wkt = json.getString("wkt");    

            Geometry geom = GeometryLocator.getGeometryManager().createFrom(wkt);

            return geom;

        } catch (Exception ex) {

            throw new IllegalArgumentException("Can't retrieve a Geometry from JsonObject.", ex);

        }

    }

    @Override

    public JsonObjectBuilder toJsonBuilder(Object value) {

        JsonObjectBuilder builder = Json.createObjectBuilder();

        builder.add_class(Geometry.class);

        this.addAll(builder, value);

        return builder;

    }

    private void addAll(JsonObjectBuilder target, Object source) {

        Geometry geom = (Geometry) source;

        target.add("wkt", geom.convertToWKTQuietly());

    }

    @Override

    public boolean isApplicable(Object... args) {

        if( args[0] instanceof Geometry) {

            return true;

        }

        if( !(args[0] instanceof JsonObject) ) {

            return false;

        }

        JsonObject json = (JsonObject) args[0];

        String className = json.getString(JsonManager.ATTRIBUTE_NAME_CLASS, null);

        return StringUtils.equalsIgnoreCase(className, Geometry.class.getName());

    }

}