2012-05-03 07:56:14 -04:00
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<?php
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/**
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* Query
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*
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* Free Query Builder / Database Abstraction Layer
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*
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* @package Query
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* @author Timothy J. Warren
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* @copyright Copyright (c) 2012
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* @link https://github.com/aviat4ion/Query
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* @license http://philsturgeon.co.uk/code/dbad-license
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*/
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// --------------------------------------------------------------------------
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/**
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* Firebird Database class
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*
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* PDO-firebird isn't stable, so this is a wrapper of the fbird_ public functions.
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*
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* @package Query
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* @subpackage Drivers
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*/
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class Firebird extends DB_PDO {
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/**
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* Reference to the last query executed
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*
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* @var object
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*/
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protected $statement;
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/**
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* Reference to the resource returned by
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* the last query executed
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*
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* @var resource
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*/
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protected $statement_link;
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/**
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* Reference to the current transaction
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*
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* @var resource
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*/
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protected $trans;
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/**
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* Reference to the connection resource
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*
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* @var resource
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*/
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protected $conn;
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/**
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* Open the link to the database
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*
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* @param string $dbpath
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* @param string $user
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* @param string $pass
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*/
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public function __construct($dbpath, $user='sysdba', $pass='masterkey')
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{
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$this->conn = fbird_connect($dbpath, $user, $pass, 'utf-8');
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// Throw an exception to make this match other pdo classes
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if ( ! is_resource($this->conn))
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{
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throw new PDOException(fbird_errmsg());
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die();
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}
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// Load these classes here because this
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// driver does not call the constructor
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// of DB_PDO, which defines these two
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// class variables for the other drivers
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// Load the sql class
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$class = __CLASS__."_sql";
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$this->sql = new $class();
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// Load the util class
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$class = __CLASS__."_util";
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$this->util = new $class($this);
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}
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// --------------------------------------------------------------------------
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/**
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* Doesn't apply to Firebird
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*
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* @param string $name
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* @return FALSE
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*/
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public function switch_db($name)
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{
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return FALSE;
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}
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// --------------------------------------------------------------------------
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/**
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* Empty a database table
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*
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* @param string $table
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*/
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public function truncate($table)
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{
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// Firebird lacka a truncate command
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$sql = 'DELETE FROM "'.$table.'"';
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$this->statement = $this->query($sql);
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}
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// --------------------------------------------------------------------------
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/**
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* Wrapper public function to better match PDO
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*
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* @param string $sql
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* @return $this
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*/
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public function query($sql)
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{
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$this->statement_link = (isset($this->trans))
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? fbird_query($this->trans, $sql)
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: fbird_query($this->conn, $sql);
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// Throw the error as a exception
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if ($this->statement_link === FALSE)
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{
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throw new PDOException(fbird_errmsg());
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}
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$this->statement = new FireBird_Result($this->statement_link);
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return $this->statement;
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}
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// --------------------------------------------------------------------------
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/**
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* Emulate PDO prepare
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*
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* @param string $query
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* @param array $options
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* @return $this
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*/
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public function prepare($query, $options=NULL)
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{
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$this->statement_link = fbird_prepare($this->conn, $query);
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// Throw the error as an exception
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if ($this->statement_link === FALSE)
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{
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throw new PDOException(fbird_errmsg());
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}
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$this->statement = new FireBird_Result($this->statement_link);
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return $this->statement;
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}
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// --------------------------------------------------------------------------
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/**
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* Start a database transaction
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*
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* @return bool
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*/
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public function beginTransaction()
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{
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if (($this->trans = fbird_trans($this->conn)) !== NULL)
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2012-05-03 07:56:14 -04:00
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{
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return TRUE;
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}
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return FALSE;
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}
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// --------------------------------------------------------------------------
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/**
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* Commit a database transaction
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*
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* @return bool
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*/
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public function commit()
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{
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return fbird_commit($this->trans);
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}
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// --------------------------------------------------------------------------
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/**
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* Rollback a transaction
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*
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* @return bool
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*/
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public function rollBack()
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{
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return fbird_rollback($this->trans);
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}
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// --------------------------------------------------------------------------
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/**
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* Prepare and execute a query
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*
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* @param string $sql
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* @param array $args
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* @return resource
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*/
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public function prepare_execute($sql, $args)
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{
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$query = $this->prepare($sql);
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// Set the statement in the class variable for easy later access
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$this->statement_link =& $query;
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return $query->execute($args);
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}
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// --------------------------------------------------------------------------
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/**
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* Method to emulate PDO->quote
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*
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* @param string $str
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* @param int $param_type
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* @return string
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*/
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public function quote($str, $param_type = NULL)
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{
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if (is_numeric($str))
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{
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return $str;
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}
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return "'".str_replace("'", "''", $str)."'";
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}
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// --------------------------------------------------------------------------
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/**
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* Method to emulate PDO->errorInfo / PDOStatement->errorInfo
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*
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* @return array
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*/
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public function errorInfo()
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{
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$code = fbird_errcode();
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$msg = fbird_errmsg();
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return array(0, $code, $msg);
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}
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// --------------------------------------------------------------------------
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/**
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* Method to emulate PDO->errorCode
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*
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* @return array
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*/
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public function errorCode()
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{
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return fbird_errcode();
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}
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// --------------------------------------------------------------------------
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/**
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* Bind a prepared query with arguments for executing
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*
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* @param string $sql
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* @param array $params
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* @return FALSE
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*/
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public function prepare_query($sql, $params)
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{
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// You can't bind query statements before execution with
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// the firebird database
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return FALSE;
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}
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}
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// End of firebird_driver.php
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