Application: gvSIG desktop

 * 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.

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

 * This locator is the entry point of gvSIG's DAL, providing access to all DAL

 * services. DAL services are grouped in two managers {@link DataManager} and

 * {@link ResourceManager}.

 * This locator offers methods for registering as well as for obtaining both

 * managers' unique instances.

    private static final String LOCATOR_NAME = "DALLocator";

    /**

     * DataManager name used by the locator to access the instance

     */

    public static final String DATA_MANAGER_NAME = "DataManager";

    private static final String DATA_MANAGER_DESCRIPTION = "DataManager of gvSIG Data Access Library";

    /**

     * ResourceManager name used by the locator to access the instance

     */

    public static final String RESOURCE_MANAGER_NAME = "ResourceManager";

    private static final String RESOURCE_MANAGER_DESCRIPTION = "ResourceManager of gvSIG Data Access Library";

    /**

     * DataManager name used by the locator to access the instance

     */

    public static final String FEATURETYPE_DEFINITIONS_MANAGER_NAME = "FeatureTypeDefinitionsManager";

    private static final String FEATURETYPE_DEFINITIONS_MANAGER_DESCRIPTION = "FeatureTypeDefinitionsManager of gvSIG Data Access Library";

    /**

     * Unique instance.

     */

    private static final DALLocator instance = new DALLocator();

    /**

     * Return the singleton instance.

     *

     * @return the singleton instance

     */

    public static DALLocator getInstance() {

        return instance;

    }

    /**

     * Returns the Locator name.

     *

     * @return String containing the locator name.

     */

    public String getLocatorName() {

        return LOCATOR_NAME;

    }

    /**

     * Return a reference to DataManager.

     *

     * @return a reference to DataManager

     * @throws LocatorException if there is no access to the class or the class

     * cannot be instantiated

     * @see Locator#get(String)

     */

    public static DataManager getDataManager() throws LocatorException {

        return (DataManager) getInstance().get(DATA_MANAGER_NAME);

    }

    /**

     * Registers the Class implementing the DataManager interface.

     *

     * @param clazz implementing the DataManager interface

     */

    public static void registerDataManager(Class clazz) {

        getInstance().register(DATA_MANAGER_NAME, DATA_MANAGER_DESCRIPTION,

                clazz);

    }

    /**

     * Registers a class as the default DataManager.

     *

     * @param clazz implementing the DataManager interface

     */

    public static void registerDefaultDataManager(Class clazz) {

        getInstance().registerDefault(DATA_MANAGER_NAME, DATA_MANAGER_DESCRIPTION,

                clazz);

    }

    /**

     * Return a reference to ResourceManager.

     *

     * @return a reference to ResourceManager

     * @throws LocatorException if there is no access to the class or the class

     * cannot be instantiated

     * @see Locator#get(String)

     */

    public static ResourceManager getResourceManager() throws LocatorException {

        return (ResourceManager) getInstance().get(RESOURCE_MANAGER_NAME);

    }

    /**

     * Registers the Class implementing the MDManager interface.

     *

     * @param clazz implementing the MDManager interface

     */

    public static void registerResourceManager(Class clazz) {

        getInstance().register(RESOURCE_MANAGER_NAME,

                RESOURCE_MANAGER_DESCRIPTION, clazz);

    }

    /**

     * Return a reference to FeatureTypeDefinitionsManager.

     *

     * @return a reference to FeatureTypeDefinitionsManager

     * @throws LocatorException if there is no access to the class or the class

     * cannot be instantiated

     * @see Locator#get(String)

     */

    public static FeatureTypeDefinitionsManager getFeatureTypeDefinitionsManager() throws LocatorException {

        return (FeatureTypeDefinitionsManager) getInstance().get(FEATURETYPE_DEFINITIONS_MANAGER_NAME);

    }

    /**

     * Registers the Class implementing the FeatureTypeDefinitionsManager

     * interface.

     *

     * @param clazz implementing the FeatureTypeDefinitionsManager interface

     */

    public static void registerFeatureTypeDefinitionsManager(Class clazz) {

        getInstance().register(FEATURETYPE_DEFINITIONS_MANAGER_NAME,

                FEATURETYPE_DEFINITIONS_MANAGER_DESCRIPTION,

                clazz);

    }

    /**

     * Registers a class as the default FeatureTypeDefinitionsManager.

     *

     * @param clazz implementing the FeatureTypeDefinitionsManager interface

     */

    public static void registerDefaultFeatureTypeDefinitionsManager(Class clazz) {

        getInstance().registerDefault(FEATURETYPE_DEFINITIONS_MANAGER_NAME,

                FEATURETYPE_DEFINITIONS_MANAGER_DESCRIPTION,

                clazz);

    }