package org.jtheque.primary.utils.web.analyzers.generic.value;

 import org.jdom.Element;

 import org.jtheque.core.utils.file.XMLException;

 import org.jtheque.core.utils.file.XMLReader;

 import org.jtheque.primary.utils.web.analyzers.generic.FactoryContainer;

 import org.jtheque.primary.utils.web.analyzers.generic.operation.ScannerPossessor;

 /*

  * This file is part of JTheque.

  *            

  * JTheque 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. 

  *

  * JTheque 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 JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 /**

  * A factory for ValueGetter elements.

  *

  * @author Baptiste Wicht

  */

 public final class ValueGetterFactory {

         private static final FactoryContainer<ValueGetter> FACTORY = new FactoryContainer<ValueGetter>();

         private static ScannerPossessor scannerPossessor;

         /**

          * This an utility class, not instanciable.

          */

         private ValueGetterFactory(){

                 super();

         }

         static{

                 FACTORY.add(new SimpleValueGetterFactory());

                 FACTORY.add(new ConditionalValueGetterFactory());

                 FACTORY.add(new IteratorValueGetterFactory());

                 FACTORY.add(new EmptyValueFactory());

         }

         /**

          * Set the scanner possessor.

          *

          * @param scannerPossessor The scanner possessor.

          */

         public static void setScannerPossessor(ScannerPossessor scannerPossessor){

                 ValueGetterFactory.scannerPossessor = scannerPossessor;

         }

         /**

          * Return the scanner possessor.

          *

          * @return The scanner possessor.

          */

         static ScannerPossessor getScannerPossessor(){

                 return scannerPossessor;

         }

         /**

          * Return the value getter on the element.

          *

          * @param element The element to get the value getter for.

          * @param reader The reader to use.

          *

          * @return The factored ValueGetter to use.

          *

          * @throws XMLException If an error occurs during the XML processing.

          */

         public static ValueGetter getValueGetter(Element element, XMLReader reader) throws XMLException{

                 return FACTORY.getFactoredObject(element, reader);

         }

 }