<?php
/*
 * Class that operate on table 'books'. Database Mysql.
 *
 * @author: http://phpdao.com
 * @date: 2008-11-16 11:30
 */
class BooksMySqlDAO implements BooksDAO{

	/**
	 * Get Domain object by primry key
	 *
	 * @param String $id primary key
	 * @return BooksMySql 
	 */
	public function load($id){
		$sql = 'SELECT * FROM books WHERE id = ?';
		$sqlQuery = new SqlQuery($sql);
		$sqlQuery->setNumber($id);
		return $this->getRow($sqlQuery);
	}

	/**
	 * Get all records from table
	 */
	public function queryAll(){
		$sql = 'SELECT * FROM books';
		$sqlQuery = new SqlQuery($sql);
		return $this->getList($sqlQuery);
	}
	
	/**
	 * Get all records from table ordered by field
	 *
	 * @param $orderColumn column name
	 */
	public function queryAllOrderBy($orderColumn){
		$sql = 'SELECT * FROM books ORDER BY '.$orderColumn;
		$sqlQuery = new SqlQuery($sql);
		return $this->getList($sqlQuery);
	}
	
	/**
 	 * Delete record from table
 	 * @param books primary key
 	 */
	public function delete($id){
		$sql = 'DELETE FROM books WHERE id = ?';
		$sqlQuery = new SqlQuery($sql);
		$sqlQuery->setNumber($id);
		return $this->executeUpdate($sqlQuery);
	}
	
	/**
 	 * Insert record to table
 	 *
 	 * @param BooksMySql books
 	 */
	public function insert($books){
		$sql = 'INSERT INTO books (image, name, year, month) VALUES (?, ?, ?, ?)';
		$sqlQuery = new SqlQuery($sql);
		
		$sqlQuery->set($books->image);
		$sqlQuery->set($books->name);
		$sqlQuery->setNumber($books->year);
		$sqlQuery->setNumber($books->month);

		$id = $this->executeInsert($sqlQuery);	
		$books->id = $id;
		return $id;
	}
	
	/**
 	 * Update record in table
 	 *
 	 * @param BooksMySql books
 	 */
	public function update($books){
		$sql = 'UPDATE books SET image = ?, name = ?, year = ?, month = ? WHERE id = ?';
		$sqlQuery = new SqlQuery($sql);
		
		$sqlQuery->set($books->image);
		$sqlQuery->set($books->name);
		$sqlQuery->setNumber($books->year);
		$sqlQuery->setNumber($books->month);

		$sqlQuery->setNumber($books->id);
		return $this->executeUpdate($sqlQuery);
	}

	/**
 	 * Delete all rows
 	 */
	public function clean(){
		$sql = 'TRUNCATE TABLE books';
		$sqlQuery = new SqlQuery($sql);
		return $this->executeUpdate($sqlQuery);
	}
	
	/**
	 * Read row
	 *
	 * @return BooksMySql 
	 */
	protected function readRow($row){
		 $books = new Books();
		 
		$books->id = $row['id'];
		$books->image = $row['image'];
		$books->name = $row['name'];
		$books->year = $row['year'];
		$books->month = $row['month'];

		 return $books;
	}
	
	protected function getList($sqlQuery){
		$tab = QueryExecutor::execute($sqlQuery);
		$ret = array();
		for($i=0;$i<count($tab);$i++){
			$ret[$i] = $this->readRow($tab[$i]);
		}
		return $ret;
	}
	
	/**
	 * Get row
	 *
	 * @return BooksMySql 
	 */
	protected function getRow($sqlQuery){
		$tab = QueryExecutor::execute($sqlQuery);
		return $this->readRow($tab[0]);		
	}
	
	/**
	 * Execute sql query
	 */
	protected function execute($sqlQuery){
		return QueryExecutor::execute($sqlQuery);
	}
	
		
	/**
	 * Execute sql query
	 */
	protected function executeUpdate($sqlQuery){
		return QueryExecutor::executeUpdate($sqlQuery);
	}

	/**
	 * Insert row to table
	 */
	protected function executeInsert($sqlQuery){
		return QueryExecutor::executeInsert($sqlQuery);
	}
}
?>