| gvSIG desktop 1

package org.gvsig.fmap.geometries.operation;

import java.util.ArrayList;

import java.util.Enumeration;

import java.util.Map;

import com.sun.org.apache.xalan.internal.xsltc.runtime.Hashtable;

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * 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 2

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

 *

 * $Id: GeometryOperationsRegistry.java,v 1.1 2008/03/12 08:46:21 cvs Exp $

 * $Log: GeometryOperationsRegistry.java,v $

 * Revision 1.1  2008/03/12 08:46:21  cvs

 * *** empty log message ***

 *

 *

 */

/**

 * @author Jorge Piera Llodr? (jorge.piera@iver.es)

 */

public class GeometryOperationsRegistry {

        private static Hashtable geometryOperations = new Hashtable(); 

        /**

         * Register a new operation

         * @param geometryType

         * The geometry type. See the FShape class to see the types

         * @param operationCode

         * Operation code. See the GeometryOperation class to see the codes

         * @param operation

         * The operation to register.

         */

        public static void registerOperation(int geometryType, int operationCode, GeometryOperation operation){

                GeometryOperationsSet operationsSet = null;

                Integer key = new Integer(geometryType);

                //If the operations set exists...

                if (geometryOperations.containsKey(key)){

                        operationsSet = (GeometryOperationsSet)geometryOperations.get(key);

                }//If is the first time it is necessary to create a set of operations

                else{

                        operationsSet = new GeometryOperationsSet(GeometryOperation.NUMBER_OF_OPERATIONS, geometryType);

                        geometryOperations.put(key, operationsSet);

                }

                operationsSet.addOperation(operationCode, operation);

        }

        /**

         * Gets the set of operations defined for a concrete geometry type

         * @param geometryType

         * The geometry type. See the FShape class to see the types

         * @return

         * A set of operations

         * @throws NotRegisteredOperationSetException

         */

        public static GeometryOperationsSet getOperationSet(int geometryType) throws NotRegisteredOperationSetException{

                Integer key = new Integer(geometryType);

                //If the operations set exists...

                if (geometryOperations.containsKey(key)){

                        return (GeometryOperationsSet)geometryOperations.get(key);

                }

                throw new NotRegisteredOperationSetException(geometryType);

        }

        /**

         * Gets a concrete operation for a geometry type

         * @param geometryType

         * The geometry type code

         * @param operationCode

         * The operation code

         * @return

         * The GeometryOpration is exists

         * @throws NotRegisteredOperationSetException

         */

        public static GeometryOperation getOperation(int geometryType, int operationCode) throws NotRegisteredOperationSetException{

                return getOperationSet(geometryType).getOperation(operationCode);

        }

        /**

         * Sets the parameters for all the objects that implements the same

         * operation

         * @param parameters

         * The parameters object

         * @param operationCode

         * The operation code

         */

        public static void setParametersPropertiesForOperation(Map parameters, int operationCode){

                Enumeration enumeration = geometryOperations.keys();

                while (enumeration.hasMoreElements()){

                        GeometryOperationsSet operationsSet = 

                                (GeometryOperationsSet) geometryOperations.get(enumeration.nextElement());

                        GeometryOperation operation = operationsSet.getOperation(operationCode);

                        if (operation != null){

                                operation.setParemeters(parameters);

                        }

                }

        }

        /**

         * Gets a list of all the classes than implements a concrete

         * operation

         * @param operationCode

         * The operation code

         * @return

         */

        public static ArrayList getOperationsByOperationCode(int operationCode){

                ArrayList operations = new ArrayList();

                Enumeration enumeration = geometryOperations.keys();

                while (enumeration.hasMoreElements()){

                        GeometryOperationsSet operationsSet = 

                                (GeometryOperationsSet) geometryOperations.get(enumeration.nextElement());

                        GeometryOperation operation = operationsSet.getOperation(operationCode);

                        if (operation != null){

                                operations.add(operation);

                        }

                }

                return operations;

        }

}