| gvSIG desktop 1

package org.gvsig.gpe;

import java.util.Iterator;

import java.util.Properties;

/* 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: GPEDefaults.java 373 2008-01-10 09:33:05Z jpiera $

 * $Log$

 * Revision 1.10  2007/06/20 09:35:37  jorpiell

 * Add the javadoc comments

 *

 * Revision 1.9  2007/06/07 14:52:28  jorpiell

 * Add the schema support

 *

 * Revision 1.8  2007/05/15 10:39:14  jorpiell

 * Add the number of decimals property

 *

 * Revision 1.7  2007/05/15 09:34:39  jorpiell

 * the tag names cant have blanc spaces

 *

 * Revision 1.6  2007/04/26 14:23:16  jorpiell

 * Add a getStringProperty method

 *

 * Revision 1.5  2007/04/19 11:50:20  csanchez

 * Actualizacion protoripo libGPE

 *

 * Revision 1.4  2007/04/18 11:03:36  jorpiell

 * Add the default schema property

 *

 * Revision 1.3  2007/04/14 16:06:13  jorpiell

 * The writer handler has been updated

 *

 * Revision 1.2  2007/04/12 17:06:42  jorpiell

 * First GML writing tests

 *

 * Revision 1.1  2007/04/12 11:39:20  jorpiell

 * Add the GPEDefaults class

 *

 *

 */

/**

 * This class is used to add properties that can be used

 * by the GPE parsers and writers.

 * <p>

 * It is not possible for the consumer application to have any

 * dependence with a concrete parser or writer. But sometimes it

 * is necessary to establish some configuration parameters

 * (principally to write). This class provides a mechanism to

 * set all these parameters using the SPI (Service Provider Interface) 

 * mechanism  

 * </p>

 * <h2>Implementation Lookup</h2>

 * <p>

 * The SPI provides a mechanism to register a set of properties that

 * both the parsers and the writers need to work. Every parser (or writer)

 * is the responsible to create a set of parameters and register them

 * in this class

 * </p>

 * <p> 

 * To register a set of properties a file named <code>org.gvsig.gpe.IGPEProperties</code>

 * shall exist in the class path in the implementation's <code>META-INF/services</code> folder.

 * </p>

 * <p>

 * The content of the files for a given implementation consists of full qualified 

 * class names, one per line. For example, an hypotetical <code>MyParserProperties</code> 

 * in the package <code>org.gvsi.gpe.format</code> and bundled in a jar file 

 * called <code>org.gvsig.gpe.format.jar</code> shall provide the following 

 * resources:

 *  

 * <pre>

 * <code>

 * $jar tvf org.gvsi.gpe.format.jar

 * META-INF/services/org.gvsig.gpe.IGPEProperties

 * org/gvsig/gpe/MyParserProperties.class

 * </code>

 * </pre>

 * 

 * And the content of the file <code>META-INF/services/org.gvsig.gpe.IGPEProperties</code> 

 * shall be a single line of text with the <code>org.gpe.gpe.format</code> class name.

 * 

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

 * @author Carlos S?nchez Peri??n (sanchez_carper@gva.es)

 */

public class GPEDefaults {

        private static Properties properties = new Properties();

//        static{                                

//                Iterator providers = availableProperties();

//                while (providers.hasNext()) {

//                        IGPEProperties next = (IGPEProperties) providers.next();

//                        Properties parserProperties = next.getProperties();

//                        Iterator it = parserProperties.keySet().iterator();

//                        while (it.hasNext()){

//                                String key = (String)it.next();                                

//                                properties.put(key, parserProperties.get(key));

//                        }                        

//                }

//        }

//        

//        /**

//         * Returns an iterator over instances of the registered GPE properties.

//         * @return all the registered GPE properties

//         */

//                private static Iterator availableProperties() {

//                Iterator providers = sun.misc.Service.providers(IGPEProperties.class);

//                return providers;

//        }

        /**

         * Returns an iterator with the name of all the properties that 

         * has been established.

         */

        public static Iterator getKeys(){

                return properties.keySet().iterator();

        }

        /**

         * Gets a String property

         * @param key

         * Property name

         * @return

         */

        public static String getStringProperty(String key){

                Object obj = getProperty(key);

                if (obj == null){

                        return null;

                }

                return (String)obj;

        }

        /**

         * Gets a int property

         * @param key

         * Property name

         * @return

         * The int property or -1

         */

        public static int getIntPropertyProperty(String key){

                Object obj = getProperty(key);

                if (obj == null){

                        return -1;

                }

                if (obj instanceof Integer){

                        return ((Integer)obj).intValue();

                }return -1;

        }

        /**

         * Gets a boolean property. If the property doesn't exist

         * it returns false.

         * @param key

         * Property name

         * @return

         * The boolean property or false

         */

        public static boolean getBooleanProperty(String key){

                Object obj = getProperty(key);

                if (obj == null){

                        return false;

                }

                if (obj instanceof Boolean){

                        return ((Boolean)obj).booleanValue();

                }return false;

        }

        /**

         * Gets a property

         * @param key

         * Property name

         * @return

         */

        public static Object getProperty(String key){

                return properties.get(key);

        }

        /**

         * Sets a property

         * @param key

         * @param value

         */

        public static void setProperty(String key, Object value){

                properties.put(key, value);

        }

}