package org.jtheque.primary.dao.impl;

 /*

  * 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.jtheque.core.managers.persistence.GenericDao;

 import org.jtheque.core.managers.persistence.Query;

 import org.jtheque.core.managers.persistence.QueryMapper;

 import org.jtheque.core.managers.persistence.able.Entity;

 import org.jtheque.core.managers.persistence.context.IDaoPersistenceContext;

 import org.jtheque.primary.dao.able.IDaoLanguages;

 import org.jtheque.primary.od.able.Language;

 import org.jtheque.primary.od.impl.LanguageImpl;

 import org.springframework.jdbc.core.simple.ParameterizedRowMapper;

 import org.springframework.jdbc.core.simple.SimpleJdbcTemplate;

 import javax.annotation.Resource;

 import java.sql.ResultSet;

 import java.sql.SQLException;

 import java.util.Collection;

 import java.util.List;

 /**

  * A Data Access Object implementation for languages.

  *

  * @author Baptiste Wicht

  */

 public final class DaoLanguages extends GenericDao<Language> implements IDaoLanguages {

     private final ParameterizedRowMapper<Language> rowMapper = new LanguageRowMapper();

     private final QueryMapper queryMapper = new LanguageQueryMapper();

     @Resource

     private IDaoPersistenceContext persistenceContext;

     @Resource

     private SimpleJdbcTemplate jdbcTemplate;

     /**

      * Create a new DaoLanguages.

      */

     public DaoLanguages() {

         super(TABLE);

     }

     @Override

     public Collection<Language> getLanguages() {

         return getAll();

     }

     @Override

     public Language getLanguage(int id) {

         return get(id);

     }

     @Override

     public Language getLanguage(String name) {

         List<Language> languages = jdbcTemplate.query("SELECT * FROM " + TABLE + " WHERE NAME = ?", rowMapper, name);

         if (languages.isEmpty()) {

             return null;

         }

         Language language = languages.get(0);

         if (isNotInCache(language.getId())) {

             getCache().put(language.getId(), language);

         }

         return getCache().get(language.getId());

     }

     @Override

     public boolean exist(Language language) {

         return getLanguage(language.getName()) != null;

     }

     @Override

     public Language createLanguage() {

         return new LanguageImpl();

     }

     @Override

     protected ParameterizedRowMapper<Language> getRowMapper() {

         return rowMapper;

     }

     @Override

     protected QueryMapper getQueryMapper() {

         return queryMapper;

     }

     @Override

     protected void loadCache() {

         Collection<Language> languages = persistenceContext.getSortedList(TABLE, rowMapper);

         for (Language language : languages) {

             getCache().put(language.getId(), language);

         }

         setCacheEntirelyLoaded();

     }

     @Override

     protected void load(int i) {

         Language language = persistenceContext.getDataByID(TABLE, i, rowMapper);

         getCache().put(i, language);

     }

     /**

      * A row mapper to map resultset to language.

      *

      * @author Baptiste Wicht

      */

     private final class LanguageRowMapper implements ParameterizedRowMapper<Language> {

         @Override

         public Language mapRow(ResultSet rs, int i) throws SQLException {

             Language language = createLanguage();

             language.setId(rs.getInt("ID"));

             language.setName(rs.getString("NAME"));

             return language;

         }

     }

     /**

      * A query mapper to map language to query.

      *

      * @author Baptiste Wicht

      */

     private static final class LanguageQueryMapper implements QueryMapper {

         @Override

         public Query constructInsertQuery(Entity entity) {

             Language borrower = (Language) entity;

             String query = "INSERT INTO " + TABLE + " (NAME) VALUES(?)";

             Object[] parameters = {

                     borrower.getName()};

             return new Query(query, parameters);

         }

         @Override

         public Query constructUpdateQuery(Entity entity) {

             Language borrower = (Language) entity;

             String query = "UPDATE " + TABLE + " SET NAME = ? WHERE ID = ?";

             Object[] parameters = {

                     borrower.getName(),

                     borrower.getId()};

             return new Query(query, parameters);

         }

     }

 }