/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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
* Lesser General Public License for more details.
*/
package org.geotools.gml;
import java.util.logging.Logger;
/**
* Creates the appropriate SubHandler element for a given OGC simple geometry
* type.
*
* @author Rob Hranac, Vision for New York
* @source $URL$
* @version $Id$
*/
public class SubHandlerFactory {
/** The logger for the GML module */
private static final Logger LOGGER = org.geotools.util.logging.Logging.getLogger("org.geotools.gml");
/** List of all valid OGC multi geometry types. */
private static final java.util.Collection BASE_GEOMETRY_TYPES = new java.util.Vector(java.util.Arrays
.asList(new String[] { "MultiPoint", "MultiLineString", "MultiPolygon" }));
/**
* Empty constructor.
*/
public SubHandlerFactory() {
LOGGER.entering("SubHandlerFactory", "new");
LOGGER.exiting("SubHandlerFactory", "new");
}
/**
* Creates a new SubHandler, based on the appropriate OGC simple geometry
* type. Note that some types are aggregated into a generic 'multi' type.
*
* @param type Type of SubHandler to return.
*
* @return DOCUMENT ME!
*
* @task TODO: throw an exception, not return a null
*/
public SubHandler create(String type) {
LOGGER.entering("SubHandlerFactory", "create", type);
SubHandler returnValue = null;
if (type.equals("Point")) {
returnValue = new SubHandlerPoint();
} else if (type.equals("LineString")) {
returnValue = new SubHandlerLineString();
} else if (type.equals("LinearRing")) {
returnValue = new SubHandlerLinearRing();
} else if (type.equals("Polygon")) {
returnValue = new SubHandlerPolygon();
} else if (type.equals("Box")) {
returnValue = new SubHandlerBox();
} else if (BASE_GEOMETRY_TYPES.contains(type)) {
returnValue = new SubHandlerMulti();
} else {
returnValue = null; // should be throwing an exception here!
}
LOGGER.exiting("SubHandlerFactory", "create", returnValue);
return returnValue;
}
}