Création class pdo

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Création class pdo

Bonjour à tous

je voudrais créer une classe d'accès à des sgbd et faisant des traitements standards (ex :CRUD ) à l'aide de PDO

je voudrais une structure comme ça

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class BaseDBAccess {
	function Insert($sql);
}
 
class PostgreSQLDBAccess extends BaseDBAccess {
	function Insert($sql)
	{
		//postgresql specific code
	}
}
 
class MySQLDBAccess extends BaseDBAccess {
	function Insert($sql)
	{
		//MySQL specific code
	}
}

que j'utilise dans une autre classe comme ça :

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class Serializer
{
	$dbAccess = new MySQLDBAccess(.....)
 
	function SaveSomethingIntoDB($something)
	{
		$dbAccess-> Insert($something)
	}
}

Pour la première classe j'ai trouvé ça :

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<?php 
class BaseDBAccess
{
 
    private $db;
 
    /**
     *
     * Set variables
     *
     */
    public function __set($name, $value)
    {
        switch($name)
        {
            case 'username':
            $this->username = $value;
            break;
 
            case 'password':
            $this->password = $value;
            break;
 
            case 'dsn':
            $this->dsn = $value;
            break;
 
            default:
            throw new Exception("$name is invalid");
        }
    }
 
    /**
     *
     * @check variables have default value
     *
     */
    public function __isset($name)
    {
        switch($name)
        {
            case 'username':
            $this->username = null;
            break;
 
            case 'password':
            $this->password = null;
            break;
        }
    }
 
        /**
         *
         * @Connect to the database and set the error mode to Exception
         *
         * @Throws PDOException on failure
         *
         */
        public function conn()
        {
            isset($this->username);
            isset($this->password);
            if (!$this->db instanceof PDO)
            {
				try{
	            	$this->db = new PDO($this->dsn, $this->username, $this->password);
    	            $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
				}catch(Exception $e){
    				echo 'Erreur : '.$e->getMessage().'<br />';
    				echo 'N° : '.$e->getCode();
 
				}
 
            }
        }
 
 
        /***
         *
         * @select values from table
         *
         * @access public
         *
         * @param string $table The name of the table
         *
         * @param string $fieldname
         *
         * @param string $id
         *
         * @return array on success or throw PDOException on failure
         *
         */
        public function dbSelect($table, $fieldname=null, $id=null)
        {
            $this->conn();
            $sql = "SELECT * FROM `$table` WHERE `$fieldname`=:id";
            $stmt = $this->db->prepare($sql);
            $stmt->bindParam(':id', $id);
            $stmt->execute();
            return $stmt->fetchAll(PDO::FETCH_ASSOC);
        }
 
 
        /**
         *
         * @execute a raw query
         *
         * @access public
         *
         * @param string $sql
         *
         * @return array
         *
         */
        public function rawSelect($sql)
        {
            $this->conn();
            return $this->db->query($sql);
        }
 
        /**
         *
         * @run a raw query
         *
         * @param string The query to run
         *
         */
        public function rawQuery($sql)
        {
            $this->conn();
            $this->db->query($sql);
        }
 
 
        /**
         *
         * @Insert a value into a table
         *
         * @acces public
         *
         * @param string $table
         *
         * @param array $values
         *
         * @return int The last Insert Id on success or throw PDOexeption on failure
         *
         */
        public function dbInsert($table, $values)
        {
            $this->conn();
            /*** snarg the field names from the first array member ***/
            $fieldnames = array_keys($values[0]);
            /*** now build the query ***/
            $size = sizeof($fieldnames);
            $i = 1;
            $sql = "INSERT INTO $table";
            /*** set the field names ***/
            $fields = '( ' . implode(' ,', $fieldnames) . ' )';
            /*** set the placeholders ***/
            $bound = '(:' . implode(', :', $fieldnames) . ' )';
            /*** put the query together ***/
            $sql .= $fields.' VALUES '.$bound;
 
            /*** prepare and execute ***/
            $stmt = $this->db->prepare($sql);
            foreach($values as $vals)
            {
                $stmt->execute($vals);
            }
        }
 
        /**
         *
         * @Update a value in a table
         *
         * @access public
         *
         * @param string $table
         *
         * @param string $fieldname, The field to be updated
         *
         * @param string $value The new value
         *
         * @param string $pk The primary key
         *
         * @param string $id The id
         *
         * @throws PDOException on failure
         *
         */
        public function dbUpdate($table, $fieldname, $value, $pk, $id)
        {
            $this->conn();
            $sql = "UPDATE `$table` SET `$fieldname`='{$value}' WHERE `$pk` = :id";
            $stmt = $this->db->prepare($sql);
            $stmt->bindParam(':id', $id, PDO::PARAM_STR);
            $stmt->execute();
        }
 
 
        /**
         *
         * @Delete a record from a table
         *
         * @access public
         *
         * @param string $table
         *
         * @param string $fieldname
         *
         * @param string $id
         *
         * @throws PDOexception on failure
         *
         */
        public function dbDelete($table, $fieldname, $id)
        {
            $this->conn();
            $sql = "DELETE FROM `$table` WHERE `$fieldname` = :id";
            $stmt = $this->db->prepare($sql);
            $stmt->bindParam(':id', $id, PDO::PARAM_STR);
            $stmt->execute();
        }
    } /*** end of class ***/
 
 
?>

Pour les 3 autres classes j'ai tenter de faire comme ça mais je pense que je suis mal parti :

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<?php 
class MysqlDBAccess extends BaseDBAccess
{
	public function __construct()
	{
 
	}
 
	public function MysqlConnectDb()
	{
		$MysqlConnect = new BaseDBAccess();
		/*** The DSN ***/
    	$MysqlConnect->dsn = "mysql:dbname=mabase;host=localhost";
 
    	/*** MySQL username and password ***/
   		$MysqlConnect->username = 'username';
    	$MysqlConnect->password = 'password';	
	}
 
	public function Mysqlinsert()
	{
		$Connect = new BaseDBAccess();
		/*** array of values to insert ***/
    	$values = array(
            array('animal_name'=>'bruce', 'animal_type'=>'dingo'),
            array('animal_name'=>'bruce', 'animal_type'=>'wombat'),
            array('animal_name'=>'bruce', 'animal_type'=>'kiwi'),
            array('animal_name'=>'bruce', 'animal_type'=>'kangaroo')
            );
   		 /*** insert the array of values ***/
   		 $MysqlConnect->dbInsert('animals', $values);
	}
 
	public function exec_nquery($p_query)
	{
                try{   
                        $stmt = $this->dbh->prepare($p_query);
                        $this->dbh->beginTransaction();
                        $stmt->execute();
                        $this->dbh->commit();
                }catch (PDOException $e){
                        echo "__warning\nErreur [DB] => " . $e->getMessage();
                }
 
        }
 
 
 
}
 /*** end of class ***/
 
 
?>

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class PostgresqlDBAccess extends BaseDBAccess
{
	public function __construct()
	{
 
	}
 
	public function PgsqlConnectDb()
	{
		$PgSQLConnect = new BaseDBAccess();
		/*** The DSN ***/
    	$PgSQLConnect->dsn = "pgsql:dbname=mabase;host=localhost";
 
    	/*** MySQL username and password ***/
   		$PgSQLConnect->username = 'username';
    	$PgSQLConnect->password = 'password';	
	}
 
	public function Mysqlinsert()
	{
		$PgSQLConnect = new BaseDBAccess();
		/*** array of values to insert ***/
    	$values = array(
            array('animal_name'=>'bruce', 'animal_type'=>'dingo'),
            array('animal_name'=>'bruce', 'animal_type'=>'wombat'),
            array('animal_name'=>'bruce', 'animal_type'=>'kiwi'),
            array('animal_name'=>'bruce', 'animal_type'=>'kangaroo')
            );
   		 /*** insert the array of values ***/
   		 $PgSQLConnect->dbInsert('evostream', $values);
	}
 
 
}

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class Serializer
{
	var $Pgsqlconnet;
	var $urlXML;
 
	public function OpenPgsqlConnect($_Pgsqlconnet)
	{
		$this->Pgsqlconnet = $_Pgsqlconnet;
		$Postgres = new PostgresqlDBAccess();
		$this->Pgsqlconnet = $Postgres->PgsqlConnectDb();
	} 
 
	public function parseXml($urlXMLtoparse)
	{
		$this->urlXML = $urlXMLtoparse;
		//Charging data of the XML
		$xml = simplexml_load_file($this->urlXML);
		if($xml)
		{
			return $xml;
		}	
 
	}
}

Etant débutant dans le concept POO en général je suis un peu bloqué pour la suite
Si quelqun a des idées ,tuto ou url
je suis preneurs

merci d'avance pour votre aide

20/01/2010, 21h57
metagoto

Je n'ai pas trop regardé ton code. En tout cas, Julien Pauli a publié un tuto sur ce site (catégorie php) sur PDO et CRUD (il me semble). Je te laisse rechercher ça.

http://julien-pauli.developpez.com/tutoriels/php/pdo/

Bonjour
en cherchant sur le net

j'ai finalement pu écrire ma classe

mais comme j'utilise postgresql comme base

je suis face à une nouvelle probleme

voici la classe principale

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<?php 
class BaseDBAccess
{
    var $sDriver='';
    var $sHost='';
    var $sDatabase='';
    var $sUser='';
    var $sPassword='';
    private static $oDatabase;
	var $oPdo=null;
	var $sQuery='';
	var $oPDOStatement=null;
 
 
    /**
     * Constructor for database connection
	 * @param string $sDriver
	 * @param string $sHost
	 * @param string $sDatabase
	 * @param string $sUser
	 * @param string $sPassword
	 */
     private function __construct($sDriver='',$sHost='',$sDatabase='',$sUser='',$sPassword='')
     {
	     	try{
				$this->setDriver($sDriver);
				$this->setHost($sHost);
				$this->setDatabase($sDatabase);
				$this->setUser($sUser);
				$this->setPassword($sPassword);
				$sDrive = $this->sDriver.':dbname='.$this->sDatabase.";host=".$this->sHost;
				$this->oPdo=new PDO($sDrive, $this->sUser, $this->sPassword);
				$this->oPdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
			}catch(PDOException $e){
				echo 'Erreur : '.$e->getMessage().'<br />';
    			echo 'N° : '.$e->getCode();	
			}
			return $this->oPdo;
     }
 
 
	/**
	 * Method for setting all variables
	 * @return unknown_type
	 */
    public function setDriver($sDriver){
			$this->sDriver=$sDriver;
	}
 
	public function setHost($sHost){
			$this->sHost=$sHost;
	}
 
	public function setDatabase($sDatabase){
			$this->sDatabase=$sDatabase;
	}
 
	public function setUser($sUser){
			$this->sUser=$sUser;
	}
 
	public function setPassword($sPassword){
			$this->sPassword=$sPassword;
	}
 
	public function setQuery($sQuery){
			$this->sQuery=$sQuery;
	}
 
	protected function setPdo($oPdo){
			$this->oPdo=$oPdo;
	}  
 
	/**
	 * To get instance of Database
	 *
	 * @param string $sDriver
	 * @param string $sHost
	 * @param string $sDatabase
	 * @param string $sUser
	 * @param string $sPassword
	 * @return Database object
	 */
	public static function getInstance($sDriver='',$sHost='',$sDatabase='',$sUser='',$sPassword=''){
		if(is_null(self::$oDatabase)){
			self::$oDatabase = new BaseDBAccess($sDriver,$sHost,$sDatabase,$sUser,$sPassword);
		}
		return self::$oDatabase;
	}   
 
 
	/**
	 *  Initiates a transaction
	* @return <bool>  */
	public function beginTransaction()
	{
		return $this->oPdo->beginTransaction();
	}
 
 
 
	/* Commits a transaction
	@return <bool> */
	public function commit()
	{
		return $this->oPdo->commit();
	}
 
	/* Commits a transaction
	@return <bool> */
	public function prepared($oPDOStatement)
	{
		$this->oPDOStatement =$oPDOStatement;
		return $this->oPdo->prepare($oPDOStatement);
	}
 
 
	/* Fetch the SQLSTATE associated with the
	last operation on the database handle
	* @return <string> */
	public function errorCode()
	{
		return $this->oPdo->errorCode();
	}
 
	/* Fetch extended error information associated with
	the last operation on the database handle
	@return <array> */
	public function erroInfo()
	{
		return $this->oPdo->errorInfo();
	}
 
	/* Executes an SQL statement, return the number of affected row
	@param <String> $statement
	@return <int> */
	public function exec($statement)
	{
		return $this->oPdo->exec($statement);
	}   
 
	/* Rolls back a transaction
	@return <bool> */
	public function rollBack()
	{
		return $this->oPdo->rollBack();
	}
 
	public function lastInsertId()
	{
		return $this->oPdo->lastInsertId();
	}
 
 
 } /*** end of class ***/
 
 
?>

et la classe pour postgres

Code:

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<?php 
require_once ("BaseDBAccess.php");
class PostgresqlDBAccess extends BaseDBAccess
{
	var $PgsqlConnection = '';
	var $seq;
 
	public function __construct()
	{
	   // $this->PgsqlConnectDb();
	}
 
	public function PgsqlConnectDb()
	{
		$this->PgsqlConnection = $PgsqlConnection;
		$this->PgsqlConnection = BaseDBAccess::getInstance('pgsql','localhost','mabase','postgres','admin');
		return $this->PgsqlConnection;	
	}
 
	 /**
      * @Insert a value into a table
      * @acces public
      * @param string $table
      * @param array $values
      * @return int The last Insert Id on success or throw PDOexeption on failure
      */
	public function insert($table,$value)
	{	
	 	$this->PgsqlConnectDb();
	    /*** snarg the field names from the first array member ***/
        $fieldnames = array_keys($value[0]);
 
        /*** now build the query ***/
        $size = sizeof($fieldnames);
        $i = 1;
        $sql = "INSERT INTO $table";
 
        /*** set the field names ***/
        $fields = '( ' . implode(' ,', $fieldnames) . ' )';
        /*** set the placeholders ***/
        $bound = '(:' . implode(', :', $fieldnames) . ' )';
        /*** put the query together ***/
        $sql .= $fields.' VALUES '.$bound;
 
        /*** prepare and execute ***/
        $stmt = $this->PgsqlConnection->prepared($sql);
 
        try
        {
	           		 foreach($value as $vals)
	        		 {
		        		 	$this->PgsqlConnection->beginTransaction(); 
		           		 	$stmt->execute($vals);
		           		 	$this->PgsqlConnection->commit();
		           		 	$lastid = $this->PgsqlConnection->lastInsertId();
		           		 	var_dump($lastid);
	           		 }
        }catch(PDOException $e){
           		 			$this->PgsqlConnection->rollback();
           		 			echo 'Erreur : '.$e->getMessage().'<br />';
   							echo 'N° : '.$e->getCode();
 
        }
	}
 
 
}
 /*** end of class ***/
 
 
?>

Mon probleme c'est que j'arrive pas à retourné le lastinsertid lors de l'appel de la methode insert

le var_dump me retourne du boolean bool(false) alors que ça doit être l'id du dernier enreg

si vous avez une idée pour le lastinsertid ? je vous remercie pour votre aide

25/01/2010, 08h41
grunk

D'après la doc php :

Citation:

Returns the ID of the last inserted row, or the last value from a sequence object, depending on the underlying driver. For example, PDO_PGSQL() requires you to specify the name of a sequence object for the name parameter.

Tu ne donne pas d'attribut à ton lastinsertid donc forcément il ne te retourne rien. (Postgres n'a pas de fonction last_insert_id comme mysql)

j'ai trouver cet fonction dans le document officiel et que j'ai utilisé et qui m'a bien retourné le lastinsertid

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public function pgsqlLastInsertId($sqlQuery, $pdoObject)
	{
   		 // Checks if query is an insert and gets table name
   		 if( preg_match("/^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)/is", $sqlQuery, $tablename) )
    	 {
        		// Gets this table's last sequence value
        		$query = "SELECT currval('" . $tablename[1] . "_id_seq') AS last_value";
 
        		$temp_q_id = $this->prepared($query);
        		$temp_q_id->execute();
 
        		if($temp_q_id)
        		{
            			$temp_result = $temp_q_id->fetch(PDO::FETCH_ASSOC);
            			return ( $temp_result ) ? $temp_result['last_value'] : false;
        		}
    	}
 
    	return false;
	}

merci :-)