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authorAndrey Andreev <narf@bofh.bg>2012-06-25 16:48:49 +0200
committerAndrey Andreev <narf@bofh.bg>2012-06-25 16:48:49 +0200
commit5029305c030158aebac7df231f4bef38c30b3616 (patch)
tree96e25ca4e489f0849468119e6a87c817213f19c9 /system/database/drivers
parentdf8894f0bd819bd4f9692abf9b95b692d37f3188 (diff)
Add pdo_odbc subdriver
Diffstat (limited to 'system/database/drivers')
-rw-r--r--system/database/drivers/pdo/pdo_driver.php109
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php45
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php239
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php2
-rw-r--r--system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php19
5 files changed, 297 insertions, 117 deletions
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php
index 9c140a69b..ab1e4ce23 100644
--- a/system/database/drivers/pdo/pdo_driver.php
+++ b/system/database/drivers/pdo/pdo_driver.php
@@ -42,7 +42,7 @@ class CI_DB_pdo_driver extends CI_DB {
public $dbdriver = 'pdo';
- // the character used to excape - not necessary for PDO
+ // The character used to escaping
protected $_escape_char = '"';
// clause and character used for LIKE escape sequences
@@ -62,6 +62,14 @@ class CI_DB_pdo_driver extends CI_DB {
// need to track the PDO options
public $options = array();
+ /**
+ * Constructor
+ *
+ * Validates the DSN string and/or detects the subdriver
+ *
+ * @param array
+ * @return void
+ */
public function __construct($params)
{
parent::__construct($params);
@@ -71,14 +79,17 @@ class CI_DB_pdo_driver extends CI_DB {
// If there is a minimum valid dsn string pattern found, we're done
// This is for general PDO users, who tend to have a full DSN string.
$this->subdriver = $match[1];
+ return;
}
- else
+ // Legacy support for DSN specified in the hostname field
+ elseif (preg_match('/([^;]+):/', $this->hostname, $match) && count($match) === 2)
{
- // Try to build a complete DSN string from params
- $this->_connect_string($params);
+ $this->dsn = $this->hostname;
+ $this->hostname = NULL;
+ $this->subdriver = $match[1];
+ return;
}
-
- if (in_array($this->subdriver, array('mssql', 'sybase'), TRUE))
+ elseif (in_array($this->subdriver, array('mssql', 'sybase'), TRUE))
{
$this->subdriver = 'dblib';
}
@@ -86,52 +97,19 @@ class CI_DB_pdo_driver extends CI_DB {
{
$this->subdriver = '4d';
}
-
- // clause and character used for LIKE escape sequences
- // this one depends on the driver being used
- if ($this->subdriver === 'odbc')
+ elseif ( ! in_array($this->subdriver, array('4d', 'cubrid', 'dblib', 'firebird', 'ibm', 'informix', 'mysql', 'oci', 'odbc', 'sqlite', 'sqlsrv'), TRUE))
{
- $this->_escape_char = '';
- $this->_like_escape_str = " {escape '%s'} ";
- }
- }
+ log_message('error', 'PDO: Invalid or non-existent subdriver');
- /**
- * Connection String
- *
- * @param array
- * @return void
- */
- protected function _connect_string($params)
- {
- if (strpos($this->hostname, ':'))
- {
- // hostname generally would have this prototype
- // $db['hostname'] = 'subdriver:host(/Server(/DSN))=hostname(/DSN);';
- // We need to get the prefix (subdriver used by PDO).
- $dsnarray = explode(':', $this->hostname);
- $this->subdriver = $dsnarray[0];
-
- // End dsn with a semicolon for extra backward compability
- // if database property was not empty.
- if ( ! empty($this->database))
+ if ($this->db_debug)
{
- $this->dsn .= rtrim($this->hostname, ';').';';
+ show_error('Invalid or non-existent PDO subdriver');
}
- }
- else
- {
- // Invalid DSN, display an error
- if ( ! array_key_exists('subdriver', $params))
- {
- show_error('Invalid DB Connection String for PDO');
- }
-
- // Assuming that the following DSN string format is used:
- // $dsn = 'pdo://username:password@hostname:port/database?subdriver=pgsql';
- $this->dsn = $this->subdriver.':';
+ throw new Exception('Invalid or non-existent PDO subdriver');
}
+
+ $this->dsn = NULL;
}
// --------------------------------------------------------------------
@@ -330,43 +308,6 @@ class CI_DB_pdo_driver extends CI_DB {
// --------------------------------------------------------------------
/**
- * Show table query
- *
- * Generates a platform-specific query string so that the table names can be fetched
- *
- * @param bool
- * @return string
- */
- protected function _list_tables($prefix_limit = FALSE)
- {
- $sql = 'SHOW TABLES FROM '.$this->escape_identifiers($this->database);
-
- if ($prefix_limit !== FALSE AND $this->dbprefix !== '')
- {
- return FALSE;
- }
-
- return $sql;
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Show column query
- *
- * Generates a platform-specific query string so that the column names can be fetched
- *
- * @param string the table name
- * @return string
- */
- protected function _list_columns($table = '')
- {
- return 'SHOW COLUMNS FROM '.$this->escape_identifiers($table);
- }
-
- // --------------------------------------------------------------------
-
- /**
* Field data query
*
* Generates a platform-specific query so that the column data can be retrieved
@@ -376,7 +317,7 @@ class CI_DB_pdo_driver extends CI_DB {
*/
protected function _field_data($table)
{
- return 'SELECT TOP 1 FROM '.$this->escape_identifiers($table);
+ return 'SELECT TOP 1 * FROM '.$this->protect_identifiers($table);
}
// --------------------------------------------------------------------
diff --git a/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php b/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
index 3a2679f41..a3e118149 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_dblib_driver.php
@@ -85,6 +85,32 @@ class CI_DB_pdo_dblib_driver extends CI_DB_pdo_driver {
// --------------------------------------------------------------------
/**
+ * Non-persistent database connection
+ *
+ * @param bool
+ * @return object
+ */
+ public function db_connect($persistent = FALSE)
+ {
+ $pdo_obj = parent::db_connect($persistent);
+
+ if ( ! is_object($pdo_obj))
+ {
+ return $pdo_obj;
+ }
+
+ // Determine how identifiers are escaped
+ $query = $this->query('SELECT CASE WHEN (@@OPTIONS | 256) = @@OPTIONS THEN 1 ELSE 0 END AS qi');
+ $query = $query->row_array();
+ $this->_quoted_identifier = empty($query) ? FALSE : (bool) $query['qi'];
+ $this->_escape_char = ($this->_quoted_identifier) ? '"' : array('[', ']');
+
+ return $pdo_obj;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Show table query
*
* Generates a platform-specific query string so that the table names can be fetched
@@ -119,22 +145,9 @@ class CI_DB_pdo_dblib_driver extends CI_DB_pdo_driver {
*/
protected function _list_columns($table = '')
{
- return 'SELECT "column_name" FROM "information_schema"."columns" WHERE "table_name" = '.$this->escape($table);
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Field data query
- *
- * Generates a platform-specific query so that the column data can be retrieved
- *
- * @param string the table name
- * @return string
- */
- protected function _field_data($table)
- {
- return 'SELECT TOP 1 * FROM '.$this->protect_identifiers($table);
+ return 'SELECT '.$this->escape_identifiers('column_name')
+ .' FROM '.$this->escape_identifiers('information_schema.columns')
+ .' WHERE '.$this->escape_identifiers('table_name').' = '.$this->escape($table);
}
// --------------------------------------------------------------------
diff --git a/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
new file mode 100644
index 000000000..a4f9dad3c
--- /dev/null
+++ b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php
@@ -0,0 +1,239 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.2.4 or newer
+ *
+ * NOTICE OF LICENSE
+ *
+ * Licensed under the Open Software License version 3.0
+ *
+ * This source file is subject to the Open Software License (OSL 3.0) that is
+ * bundled with this package in the files license.txt / license.rst. It is
+ * also available through the world wide web at this URL:
+ * http://opensource.org/licenses/OSL-3.0
+ * If you did not receive a copy of the license and are unable to obtain it
+ * through the world wide web, please send an email to
+ * licensing@ellislab.com so we can send you a copy immediately.
+ *
+ * @package CodeIgniter
+ * @author EllisLab Dev Team
+ * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
+ * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
+ * @link http://codeigniter.com
+ * @since Version 3.0.0
+ * @filesource
+ */
+
+/**
+ * PDO ODBC Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the query builder
+ * class is being used or not.
+ *
+ * @package CodeIgniter
+ * @subpackage Drivers
+ * @category Database
+ * @author EllisLab Dev Team
+ * @link http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver {
+
+ public $subdriver = 'odbc';
+
+ // The character used for escaping - not used in ODBC
+ protected $_escape_char = '';
+
+ // clause and character used for LIKE escape sequences
+ protected $_like_escape_chr = '!';
+ protected $_like_escape_str = " {escape '%s'} ";
+
+ protected $_random_keyword = ' RAND()';
+
+ /**
+ * Constructor
+ *
+ * Builds the DSN if not already set.
+ *
+ * @param array
+ * @return void
+ */
+ public function __construct($params)
+ {
+ parent::__construct($params);
+
+ if (empty($this->dsn))
+ {
+ $this->dsn = $params['subdriver'].':host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname);
+
+ if ( ! empty($this->port))
+ {
+ $this->dsn .= (DIRECTORY_SEPARATOR === '\\' ? ',' : ':').$this->port;
+ }
+
+ empty($this->database) OR $this->dsn .= ';dbname='.$this->database;
+ empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
+ empty($this->appname) OR $this->dsn .= ';appname='.$this->appname;
+ }
+ else
+ {
+ if ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 6) === FALSE)
+ {
+ $this->dsn .= ';charset='.$this->char_set;
+ }
+
+ $this->subdriver = 'odbc';
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Show table query
+ *
+ * Generates a platform-specific query string so that the table names can be fetched
+ *
+ * @param bool
+ * @return string
+ */
+ protected function _list_tables($prefix_limit = FALSE)
+ {
+ $sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";
+
+ if ($prefix_limit !== FALSE && $this->dbprefix !== '')
+ {
+ return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' "
+ .sprintf($this->_like_escape_str, $this->_like_escape_chr);
+ }
+
+ return $sql;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Show column query
+ *
+ * Generates a platform-specific query string so that the column names can be fetched
+ *
+ * @param string the table name
+ * @return string
+ */
+ protected function _list_columns($table = '')
+ {
+ return 'SELECT column_name FROM information_schema.columns WHERE table_name = '.$this->escape($table);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * From Tables
+ *
+ * This function implicitly groups FROM tables so there is no confusion
+ * about operator precedence in harmony with SQL standards
+ *
+ * @param array
+ * @return string
+ */
+ protected function _from_tables($tables)
+ {
+ return is_array($tables) ? implode(', ', $tables) : $tables;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Update statement
+ *
+ * Generates a platform-specific update string from the supplied data
+ *
+ * @param string the table name
+ * @param array the update data
+ * @param array the where clause
+ * @param array the orderby clause (ignored)
+ * @param array the limit clause (ignored)
+ * @param array the like clause
+ * @return string
+ */
+ protected function _update($table, $values, $where, $orderby = array(), $limit = FALSE, $like = array())
+ {
+ foreach ($values as $key => $val)
+ {
+ $valstr[] = $key.' = '.$val;
+ }
+
+ $where = empty($where) ? '' : ' WHERE '.implode(' ', $where);
+
+ if ( ! empty($like))
+ {
+ $where .= ($where === '' ? ' WHERE ' : ' AND ').implode(' ', $like);
+ }
+
+ return 'UPDATE '.$table.' SET '.implode(', ', $valstr).$where;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Truncate statement
+ *
+ * Generates a platform-specific truncate string from the supplied data
+ *
+ * If the database does not support the truncate() command,
+ * then this method maps to 'DELETE FROM table'
+ *
+ * @param string the table name
+ * @return string
+ */
+ protected function _truncate($table)
+ {
+ return 'DELETE FROM '.$table;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Delete statement
+ *
+ * Generates a platform-specific delete string from the supplied data
+ *
+ * @param string the table name
+ * @param array the where clause
+ * @param array the like clause
+ * @param string the limit clause
+ * @return string
+ */
+ protected function _delete($table, $where = array(), $like = array(), $limit = FALSE)
+ {
+ $conditions = array();
+
+ empty($where) OR $conditions[] = implode(' ', $where);
+ empty($like) OR $conditions[] = implode(' ', $like);
+
+ $conditions = (count($conditions) > 0) ? ' WHERE '.implode(' AND ', $conditions) : '';
+
+ return 'DELETE FROM '.$table.$conditions;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Limit string
+ *
+ * Generates a platform-specific LIMIT clause
+ *
+ * @param string the sql query string
+ * @param int the number of rows to limit the query to
+ * @param int the offset value
+ * @return string
+ */
+ protected function _limit($sql, $limit, $offset)
+ {
+ return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql);
+ }
+
+}
+
+/* End of file pdo_odbc_driver.php */
+/* Location: ./system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php */ \ No newline at end of file
diff --git a/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
index 59ae853d6..7486e42d4 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_pgsql_driver.php
@@ -97,7 +97,7 @@ class CI_DB_pdo_pgsql_driver extends CI_DB_pdo_driver {
*/
protected function _list_tables($prefix_limit = FALSE)
{
- $sql = 'SELECT * FROM "information_schema"."tables" WHERE "table_schema" = \'public\'';
+ $sql = 'SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = \'public\'';
if ($prefix_limit === TRUE && $this->dbprefix !== '')
{
diff --git a/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
index 5afd749b4..a1865b55f 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_sqlsrv_driver.php
@@ -174,22 +174,9 @@ class CI_DB_pdo_sqlsrv_driver extends CI_DB_pdo_driver {
*/
protected function _list_columns($table = '')
{
- return 'SELECT "column_name" FROM "information_schema"."columns" WHERE "table_name" = '.$this->escape($table);
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Field data query
- *
- * Generates a platform-specific query so that the column data can be retrieved
- *
- * @param string the table name
- * @return string
- */
- protected function _field_data($table)
- {
- return 'SELECT TOP 1 * FROM '.$this->protect_identifiers($table);
+ return 'SELECT '.$this->escape_identifiers('column_name')
+ .' FROM '.$this->escape_identifiers('information_schema.columns')
+ .' WHERE '.$this->escape_identifiers('table_name').' = '.$this->escape($table);
}
// --------------------------------------------------------------------