package org.jtheque.primary.utils.web.analyzers.generic.operation.iterator;

 /*

  * 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/>.

  */

 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.Factory;

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

 import org.jtheque.primary.utils.web.analyzers.generic.value.BuilderPossessor;

 import org.jtheque.primary.utils.web.analyzers.generic.value.ValueGetter;

 import org.jtheque.primary.utils.web.analyzers.generic.value.ValueGetterFactory;

 /**

  * A factory for append iterator operation.

  *

  * @author Baptiste Wicht

  */

 final class AppendFactory implements Factory<IteratorOperation> {

         @Override

         public boolean canFactor(Element element, XMLReader reader){

                 return "append".equals(element.getName());

         }

         @Override

         public IteratorOperation factor(Element n, XMLReader reader) throws XMLException{

                 return new AppendIteratorOperation(ValueGetterFactory.getValueGetter(n, reader));

         }

         /**

          * An operation which append some value to the builder.

          *

          * @author Baptiste Wicht

          */

         private static final class AppendIteratorOperation implements IteratorOperation {

                 private final ValueGetter getter;

                 /**

                  * Construct a new AppendIteratorOperation.

                  *

                  * @param getter The value getter to use.

                  */

                 private AppendIteratorOperation(ValueGetter getter){

                         this.getter = getter;

                 }

                 @Override

                 public String perform(String line, ScannerPossessor analyzer, BuilderPossessor iterator){

                         iterator.getBuilder().append(getter.getValue(line));

                         return line;

                 }

         }

 }