Query/drivers/firebird/firebird_driver.php

285 lines
5.7 KiB
PHP

<?php
/**
* Query
*
* Free Query Builder / Database Abstraction Layer
*
* @package Query
* @author Timothy J. Warren
* @copyright Copyright (c) 2012
* @link https://github.com/aviat4ion/Query
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* Firebird Database class
*
* PDO-firebird isn't stable, so this is a wrapper of the fbird_ public functions.
*
* @package Query
* @subpackage Drivers
*/
class Firebird extends DB_PDO {
/**
* Reference to the last query executed
*/
protected $statement;
/**
* Reference to the resource returned by
* the last query executed
*/
protected $statement_link;
/**
* Reference to the current transaction
*/
protected $trans;
/**
* Reference to the connection resource
*/
protected $conn;
/**
* Open the link to the database
*
* @param string $dbpath
* @param string $user
* @param string $pass
*/
public function __construct($dbpath, $user='sysdba', $pass='masterkey')
{
$this->conn = fbird_connect($dbpath, $user, $pass, 'utf-8');
// Throw an exception to make this match other pdo classes
if ( ! is_resource($this->conn))
{
throw new PDOException(fbird_errmsg());
die();
}
// Load these classes here because this
// driver does not call the constructor
// of DB_PDO, which defines these two
// class variables for the other drivers
// Load the sql class
$class = __CLASS__."_sql";
$this->sql = new $class();
// Load the util class
$class = __CLASS__."_util";
$this->util = new $class($this);
}
// --------------------------------------------------------------------------
/**
* Doesn't apply to Firebird
*
* @param string $name
* @return FALSE
*/
public function switch_db($name)
{
return FALSE;
}
// --------------------------------------------------------------------------
/**
* Empty a database table
*
* @param string $table
*/
public function truncate($table)
{
// Firebird lacka a truncate command
$sql = 'DELETE FROM "'.$table.'"';
$this->statement = $this->query($sql);
}
// --------------------------------------------------------------------------
/**
* Wrapper public function to better match PDO
*
* @param string $sql
* @return $this
*/
public function query($sql)
{
$this->statement_link = (isset($this->trans))
? fbird_query($this->trans, $sql)
: fbird_query($this->conn, $sql);
// Throw the error as a exception
if ($this->statement_link === FALSE)
{
throw new PDOException(fbird_errmsg());
}
return new FireBird_Result($this->statement_link);
}
// --------------------------------------------------------------------------
/**
* Emulate PDO prepare
*
* @param string $query
* @param array $options
* @return $this
*/
public function prepare($query, $options=NULL)
{
$this->statement_link = fbird_prepare($this->conn, $query);
// Throw the error as an exception
if ($this->statement_link === FALSE)
{
throw new PDOException(fbird_errmsg());
}
return new FireBird_Result($this->statement_link);
}
// --------------------------------------------------------------------------
/**
* Return the number of rows returned for a SELECT query
*
* @return int
*/
public function num_rows()
{
return $this->statement->num_rows();
}
// --------------------------------------------------------------------------
/**
* Start a database transaction
*
* @return bool
*/
public function beginTransaction()
{
if(($this->trans = fbird_trans($this->conn)) !== NULL)
{
return TRUE;
}
return FALSE;
}
// --------------------------------------------------------------------------
/**
* Commit a database transaction
*
* @return bool
*/
public function commit()
{
return fbird_commit($this->trans);
}
// --------------------------------------------------------------------------
/**
* Rollback a transaction
*
* @return bool
*/
public function rollBack()
{
return fbird_rollback($this->trans);
}
// --------------------------------------------------------------------------
/**
* Prepare and execute a query
*
* @param string $sql
* @param array $args
* @return resource
*/
public function prepare_execute($sql, $args)
{
$query = $this->prepare($sql);
// Set the statement in the class variable for easy later access
$this->statement =& $query;
return $query->execute($args);
}
// --------------------------------------------------------------------------
/**
* Method to emulate PDO->quote
*
* @param string $str
* @param int $param_type
* @return string
*/
public function quote($str, $param_type = NULL)
{
if(is_numeric($str))
{
return $str;
}
return "'".str_replace("'", "''", $str)."'";
}
// --------------------------------------------------------------------------
/**
* Method to emulate PDO->errorInfo / PDOStatement->errorInfo
*
* @return array
*/
public function errorInfo()
{
$code = fbird_errcode();
$msg = fbird_errmsg();
return array(0, $code, $msg);
}
// --------------------------------------------------------------------------
/**
* Method to emulate PDO->errorCode
*
* @return array
*/
public function errorCode()
{
return fbird_errcode();
}
// --------------------------------------------------------------------------
/**
* Bind a prepared query with arguments for executing
*
* @param string $sql
* @param array $params
* @return FALSE
*/
public function prepare_query($sql, $params)
{
// You can't bind query statements before execution with
// the firebird database
return FALSE;
}
}
// End of firebird_driver.php