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/*
 * Copyright 2014 Objectos, Fábrica de Software LTDA.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package br.com.objectos.way.sql;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * @author [email protected] (Marcio Endo)
 */
public abstract class SqlConnection {

  abstract Dialect dialect();
  abstract Connection connection();

  SqlConnection() {
  }

  public PreparedStatement prepare(Sql sql) throws SqlException {
    try {
      String query = sql.toString(dialect());
      return connection().prepareStatement(query);
    } catch (SQLException e) {
      throw SqlException.wrap(e);
    }
  }

  public PreparedStatement prepareAndGenerateKeys(Sql sql) throws SqlException {
    try {
      String query = sql.toString(dialect());
      return connection().prepareStatement(query, Statement.RETURN_GENERATED_KEYS);
    } catch (SQLException e) {
      throw SqlException.wrap(e);
    }
  }

  void commit() throws SqlException {
    try {
      connection().commit();
    } catch (SQLException e) {
      throw SqlException.wrap(e);
    }
  }

  void rollback() throws SqlException {
    try {
      connection().rollback();
    } catch (SQLException e) {
      throw SqlException.wrap(e);
    }
  }

}