package database.crud;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;


import database.Crud;
import database.dataset.Sequence;

/*****************************************************************************
 * Classe: SequenceCrud
 * 
 * Objet ayant pour bout d'ex�cuter les instructions SQL en respectant les
 * op�rations de persistance des donn�es.
 * 
 * Liste des dependances
 * -Dataset sequence
 * -Connection
 * -Statement
 * 
 * Projet Orford
 ****************************************************************************
 * Modification: Ajout dela m�thode getNewSequenceId(), ajout de control du
 * commit pour instructions multiples pour la m�thode create().
 * Nom: Alfredo Toyo
 * Date: 2013-09-06
 ****************************************************************************/

/**
 * @author Alfredo Toyo
 * Objet ayant pour bout d'ex�cuter les instructions SQL en respectant les
 * op�rations de persistance des donn�es.
 */
public class SequenceCrud implements Crud<Sequence> {
	private Connection connection;
	private Statement statement;
	
	/**
	 * Constructeur
	 * @param connection
	 * @throws SQLException 
	 */
	public SequenceCrud(Connection connection) throws SQLException {
		this.connection = connection;
		this.statement = this.connection.createStatement();
	}

	@Override
	public int create(Sequence dataset) throws SQLException {		
		//create une nouvelle row dans la BD
		String query = "INSERT INTO sequence (sequence_nomtable,sequence_dernierid) "
					 + "VALUES('" + dataset.getSequence_nomtable() + "'," +
				              "'" + dataset.getSequence_dernierid() + "')";
		
		statement.execute(query);

		//Retourner le id de se dernier
		return dataset.getSequence_dernierid();
	}

	@Override
	public Sequence readById(int id) throws SQLException {
		String query = "SELECT * FROM sequence "
				     + "WHERE sequence_dernierid='"+id+"'";
		
		ResultSet rs = statement.executeQuery(query);
		rs.next();
		
		//Construire le dataset � partir du resultset
		return new Sequence(rs.getString("sequence_nomtable"),
						    rs.getInt("sequence_dernierid"));
	}

	@Override
	public List<Sequence> readAll() throws SQLException {
		List<Sequence> lstSequence = new ArrayList<Sequence>();
		
		String query = "SELECT * FROM sequence LIMIT 0,100";
		ResultSet rs = statement.executeQuery(query);
		
		while(rs.next()){
		//Construire le dataset � partir du resultset
			Sequence tmp = new Sequence(rs.getString("sequence_nomtable"),
						                rs.getInt("sequence_dernierid"));
			lstSequence.add(tmp);
		}
		
		return lstSequence;
	}

	@Override
	public boolean update(Sequence dataset) throws SQLException {
		String query = "UPDATE sequence "
					 + "SET sequence_dernierid='"+dataset.getSequence_dernierid()+"' "
				     + "WHERE sequence_nomtable='"+dataset.getSequence_nomtable()+"'";
		
		statement.execute(query);

		return true;
	}

	@Override
	public boolean destroy(Sequence dataset) throws SQLException {
		String query = "DELETE FROM sequence "
					 + "WHERE sequence_nomtable='"+dataset.getSequence_nomtable()+"'";
		
		statement.execute(query);
		
		return true;
	}

	@Override
	public int getNewSequenceId() throws SQLException {
		return 0;
	}
}