diff options
author | Derek Allard <derek.allard@ellislab.com> | 2007-04-15 19:41:17 +0200 |
---|---|---|
committer | Derek Allard <derek.allard@ellislab.com> | 2007-04-15 19:41:17 +0200 |
commit | d2df9bc7cc9d4b3e53818470c5d0977c9a36677c (patch) | |
tree | 23c0794fefaa6860ec997813fefb9c64fcee1983 /system/database/drivers/mssql/mssql_driver.php | |
parent | 9613e2c136c96fbb1d055b36a0a5055811f03451 (diff) |
update pMachine to EllisLab
update copyright year
update Code Igniter to CodeIgniter
Diffstat (limited to 'system/database/drivers/mssql/mssql_driver.php')
-rw-r--r-- | system/database/drivers/mssql/mssql_driver.php | 914 |
1 files changed, 457 insertions, 457 deletions
diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php index 47cfa6bbe..ef66e3f3a 100644 --- a/system/database/drivers/mssql/mssql_driver.php +++ b/system/database/drivers/mssql/mssql_driver.php @@ -1,458 +1,458 @@ -<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); -/** - * Code Igniter - * - * An open source application development framework for PHP 4.3.2 or newer - * - * @package CodeIgniter - * @author Rick Ellis - * @copyright Copyright (c) 2006, pMachine, Inc. - * @license http://www.codeignitor.com/user_guide/license.html - * @link http://www.codeigniter.com - * @since Version 1.0 - * @filesource - */ - -// ------------------------------------------------------------------------ - -/** - * MS SQL Database Adapter Class - * - * Note: _DB is an extender class that the app controller - * creates dynamically based on whether the active record - * class is being used or not. - * - * @package CodeIgniter - * @subpackage Drivers - * @category Database - * @author Rick Ellis - * @link http://www.codeigniter.com/user_guide/database/ - */ -class CI_DB_mssql_driver extends CI_DB { - - /** - * Non-persistent database connection - * - * @access private called by the base class - * @return resource - */ - function db_connect() - { - return @mssql_connect($this->hostname, $this->username, $this->password); - } - - // -------------------------------------------------------------------- - - /** - * Persistent database connection - * - * @access private called by the base class - * @return resource - */ - function db_pconnect() - { - return @mssql_pconnect($this->hostname, $this->username, $this->password); - } - - // -------------------------------------------------------------------- - - /** - * Select the database - * - * @access private called by the base class - * @return resource - */ - function db_select() - { - return @mssql_select_db($this->database, $this->conn_id); - } - - // -------------------------------------------------------------------- - - /** - * Version number query string - * - * @access public - * @return string - */ - function _version() - { - return "SELECT version() AS ver"; - } - - // -------------------------------------------------------------------- - - /** - * Execute the query - * - * @access private called by the base class - * @param string an SQL query - * @return resource - */ - function _execute($sql) - { - $sql = $this->_prep_query($sql); - return @mssql_query($sql, $this->conn_id); - } - - // -------------------------------------------------------------------- - - /** - * Prep the query - * - * If needed, each database adapter can prep the query string - * - * @access private called by execute() - * @param string an SQL query - * @return string - */ - function _prep_query($sql) - { - return $sql; - } - - // -------------------------------------------------------------------- - - /** - * Begin Transaction - * - * @access public - * @return bool - */ - function trans_begin($test_mode = FALSE) - { - if ( ! $this->trans_enabled) - { - return TRUE; - } - - // When transactions are nested we only begin/commit/rollback the outermost ones - if ($this->_trans_depth > 0) - { - return TRUE; - } - - // Reset the transaction failure flag. - // If the $test_mode flag is set to TRUE transactions will be rolled back - // even if the queries produce a successful result. - $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE; - - $this->simple_query('BEGIN TRAN'); - return TRUE; - } - - // -------------------------------------------------------------------- - - /** - * Commit Transaction - * - * @access public - * @return bool - */ - function trans_commit() - { - if ( ! $this->trans_enabled) - { - return TRUE; - } - - // When transactions are nested we only begin/commit/rollback the outermost ones - if ($this->_trans_depth > 0) - { - return TRUE; - } - - $this->simple_query('COMMIT TRAN'); - return TRUE; - } - - // -------------------------------------------------------------------- - - /** - * Rollback Transaction - * - * @access public - * @return bool - */ - function trans_rollback() - { - if ( ! $this->trans_enabled) - { - return TRUE; - } - - // When transactions are nested we only begin/commit/rollback the outermost ones - if ($this->_trans_depth > 0) - { - return TRUE; - } - - $this->simple_query('ROLLBACK TRAN'); - return TRUE; - } - - // -------------------------------------------------------------------- - - /** - * Escape String - * - * @access public - * @param string - * @return string - */ - function escape_str($str) - { - // Escape single quotes - return str_replace("'", "''", $str); - } - - // -------------------------------------------------------------------- - - /** - * Affected Rows - * - * @access public - * @return integer - */ - function affected_rows() - { - return @mssql_rows_affected($this->conn_id); - } - - // -------------------------------------------------------------------- - - /** - * Insert ID - * - * @access public - * @return integer - */ - function insert_id() - { - // Not supported in MS SQL? - return 0; - } - - // -------------------------------------------------------------------- - - /** - * "Count All" query - * - * Generates a platform-specific query string that counts all records in - * the specified database - * - * @access public - * @param string - * @return string - */ - function count_all($table = '') - { - if ($table == '') - return '0'; - - $query = $this->query("SELECT COUNT(*) AS numrows FROM ".$this->dbprefix.$table); - - if ($query->num_rows() == 0) - return '0'; - - $row = $query->row(); - return $row->numrows; - } - - // -------------------------------------------------------------------- - - /** - * List table query - * - * Generates a platform-specific query string so that the table names can be fetched - * - * @access private - * @return string - */ - function _list_tables() - { - return "SELECT name FROM sysobjects WHERE type = 'U' ORDER BY name"; - } - - // -------------------------------------------------------------------- - - /** - * List column query - * - * Generates a platform-specific query string so that the column names can be fetched - * - * @access private - * @param string the table name - * @return string - */ - function _list_columns($table = '') - { - return "SELECT * FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME = '".$this->_escape_table($table)."'"; - } - - // -------------------------------------------------------------------- - - /** - * Field data query - * - * Generates a platform-specific query so that the column data can be retrieved - * - * @access public - * @param string the table name - * @return object - */ - function _field_data($table) - { - return "SELECT TOP 1 * FROM ".$this->_escape_table($table); - } - - // -------------------------------------------------------------------- - - /** - * The error message string - * - * @access private - * @return string - */ - function _error_message() - { - // Are errros even supported in MS SQL? - return ''; - } - - // -------------------------------------------------------------------- - - /** - * The error message number - * - * @access private - * @return integer - */ - function _error_number() - { - // Are error numbers supported? - return ''; - } - - // -------------------------------------------------------------------- - - /** - * Escape Table Name - * - * This function adds backticks if the table name has a period - * in it. Some DBs will get cranky unless periods are escaped - * - * @access private - * @param string the table name - * @return string - */ - function _escape_table($table) - { - // I don't believe this is necessary with MS SQL. Not sure, though. - Rick - - /* - if (stristr($table, '.')) - { - $table = preg_replace("/\./", "`.`", $table); - } - */ - - return $table; - } - - // -------------------------------------------------------------------- - - /** - * Insert statement - * - * Generates a platform-specific insert string from the supplied data - * - * @access public - * @param string the table name - * @param array the insert keys - * @param array the insert values - * @return string - */ - function _insert($table, $keys, $values) - { - return "INSERT INTO ".$this->_escape_table($table)." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")"; - } - - // -------------------------------------------------------------------- - - /** - * Update statement - * - * Generates a platform-specific update string from the supplied data - * - * @access public - * @param string the table name - * @param array the update data - * @param array the where clause - * @return string - */ - function _update($table, $values, $where) - { - foreach($values as $key => $val) - { - $valstr[] = $key." = ".$val; - } - - return "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where); - } - - // -------------------------------------------------------------------- - - /** - * Delete statement - * - * Generates a platform-specific delete string from the supplied data - * - * @access public - * @param string the table name - * @param array the where clause - * @return string - */ - function _delete($table, $where) - { - return "DELETE FROM ".$this->_escape_table($table)." WHERE ".implode(" ", $where); - } - - // -------------------------------------------------------------------- - - /** - * Limit string - * - * Generates a platform-specific LIMIT clause - * - * @access public - * @param string the sql query string - * @param integer the number of rows to limit the query to - * @param integer the offset value - * @return string - */ - function _limit($sql, $limit, $offset) - { - $i = $limit + $offset; - - return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$i.' ', $sql); - } - - // -------------------------------------------------------------------- - - /** - * Close DB Connection - * - * @access public - * @param resource - * @return void - */ - function _close($conn_id) - { - @mssql_close($conn_id); - } - -} - - +<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package CodeIgniter
+ * @author Rick Ellis
+ * @copyright Copyright (c) 2006, EllisLab, Inc.
+ * @license http://www.codeignitor.com/user_guide/license.html
+ * @link http://www.codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * MS SQL Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the active record
+ * class is being used or not.
+ *
+ * @package CodeIgniter
+ * @subpackage Drivers
+ * @category Database
+ * @author Rick Ellis
+ * @link http://www.codeigniter.com/user_guide/database/
+ */
+class CI_DB_mssql_driver extends CI_DB {
+
+ /**
+ * Non-persistent database connection
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_connect()
+ {
+ return @mssql_connect($this->hostname, $this->username, $this->password);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Persistent database connection
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_pconnect()
+ {
+ return @mssql_pconnect($this->hostname, $this->username, $this->password);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Select the database
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_select()
+ {
+ return @mssql_select_db($this->database, $this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Version number query string
+ *
+ * @access public
+ * @return string
+ */
+ function _version()
+ {
+ return "SELECT version() AS ver";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Execute the query
+ *
+ * @access private called by the base class
+ * @param string an SQL query
+ * @return resource
+ */
+ function _execute($sql)
+ {
+ $sql = $this->_prep_query($sql);
+ return @mssql_query($sql, $this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Prep the query
+ *
+ * If needed, each database adapter can prep the query string
+ *
+ * @access private called by execute()
+ * @param string an SQL query
+ * @return string
+ */
+ function _prep_query($sql)
+ {
+ return $sql;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Begin Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_begin($test_mode = FALSE)
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ // Reset the transaction failure flag.
+ // If the $test_mode flag is set to TRUE transactions will be rolled back
+ // even if the queries produce a successful result.
+ $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+
+ $this->simple_query('BEGIN TRAN');
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Commit Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_commit()
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ $this->simple_query('COMMIT TRAN');
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Rollback Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_rollback()
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ $this->simple_query('ROLLBACK TRAN');
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Escape String
+ *
+ * @access public
+ * @param string
+ * @return string
+ */
+ function escape_str($str)
+ {
+ // Escape single quotes
+ return str_replace("'", "''", $str);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Affected Rows
+ *
+ * @access public
+ * @return integer
+ */
+ function affected_rows()
+ {
+ return @mssql_rows_affected($this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Insert ID
+ *
+ * @access public
+ * @return integer
+ */
+ function insert_id()
+ {
+ // Not supported in MS SQL?
+ return 0;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * "Count All" query
+ *
+ * Generates a platform-specific query string that counts all records in
+ * the specified database
+ *
+ * @access public
+ * @param string
+ * @return string
+ */
+ function count_all($table = '')
+ {
+ if ($table == '')
+ return '0';
+
+ $query = $this->query("SELECT COUNT(*) AS numrows FROM ".$this->dbprefix.$table);
+
+ if ($query->num_rows() == 0)
+ return '0';
+
+ $row = $query->row();
+ return $row->numrows;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * List table query
+ *
+ * Generates a platform-specific query string so that the table names can be fetched
+ *
+ * @access private
+ * @return string
+ */
+ function _list_tables()
+ {
+ return "SELECT name FROM sysobjects WHERE type = 'U' ORDER BY name";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * List column query
+ *
+ * Generates a platform-specific query string so that the column names can be fetched
+ *
+ * @access private
+ * @param string the table name
+ * @return string
+ */
+ function _list_columns($table = '')
+ {
+ return "SELECT * FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME = '".$this->_escape_table($table)."'";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Field data query
+ *
+ * Generates a platform-specific query so that the column data can be retrieved
+ *
+ * @access public
+ * @param string the table name
+ * @return object
+ */
+ function _field_data($table)
+ {
+ return "SELECT TOP 1 * FROM ".$this->_escape_table($table);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * The error message string
+ *
+ * @access private
+ * @return string
+ */
+ function _error_message()
+ {
+ // Are errros even supported in MS SQL?
+ return '';
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * The error message number
+ *
+ * @access private
+ * @return integer
+ */
+ function _error_number()
+ {
+ // Are error numbers supported?
+ return '';
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Escape Table Name
+ *
+ * This function adds backticks if the table name has a period
+ * in it. Some DBs will get cranky unless periods are escaped
+ *
+ * @access private
+ * @param string the table name
+ * @return string
+ */
+ function _escape_table($table)
+ {
+ // I don't believe this is necessary with MS SQL. Not sure, though. - Rick
+
+ /*
+ if (stristr($table, '.'))
+ {
+ $table = preg_replace("/\./", "`.`", $table);
+ }
+ */
+
+ return $table;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Insert statement
+ *
+ * Generates a platform-specific insert string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the insert keys
+ * @param array the insert values
+ * @return string
+ */
+ function _insert($table, $keys, $values)
+ {
+ return "INSERT INTO ".$this->_escape_table($table)." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Update statement
+ *
+ * Generates a platform-specific update string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the update data
+ * @param array the where clause
+ * @return string
+ */
+ function _update($table, $values, $where)
+ {
+ foreach($values as $key => $val)
+ {
+ $valstr[] = $key." = ".$val;
+ }
+
+ return "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Delete statement
+ *
+ * Generates a platform-specific delete string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the where clause
+ * @return string
+ */
+ function _delete($table, $where)
+ {
+ return "DELETE FROM ".$this->_escape_table($table)." WHERE ".implode(" ", $where);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Limit string
+ *
+ * Generates a platform-specific LIMIT clause
+ *
+ * @access public
+ * @param string the sql query string
+ * @param integer the number of rows to limit the query to
+ * @param integer the offset value
+ * @return string
+ */
+ function _limit($sql, $limit, $offset)
+ {
+ $i = $limit + $offset;
+
+ return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$i.' ', $sql);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Close DB Connection
+ *
+ * @access public
+ * @param resource
+ * @return void
+ */
+ function _close($conn_id)
+ {
+ @mssql_close($conn_id);
+ }
+
+}
+
+
?>
\ No newline at end of file |