diff options
Diffstat (limited to 'system/database/drivers/odbc')
| -rw-r--r-- | system/database/drivers/odbc/odbc_driver.php | 137 | ||||
| -rw-r--r-- | system/database/drivers/odbc/odbc_forge.php | 236 | ||||
| -rw-r--r-- | system/database/drivers/odbc/odbc_result.php | 2 | ||||
| -rw-r--r-- | system/database/drivers/odbc/odbc_utility.php | 101 |
4 files changed, 408 insertions, 68 deletions
diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php index 040ffed9e..0bdfc41d5 100644 --- a/system/database/drivers/odbc/odbc_driver.php +++ b/system/database/drivers/odbc/odbc_driver.php @@ -35,8 +35,14 @@ class CI_DB_odbc_driver extends CI_DB { * database engines, so this string appears in each driver and is
* used for the count_all() and count_all_results() functions.
*/
- var $_count_string = "SELECT COUNT(*) AS numrows ";
- var $_random_keyword = ' RND('.time().')'; // database specific random keyword
+ var $_count_string = "SELECT COUNT(*) AS ";
+ var $_random_keyword;
+
+
+ function CI_DB_odbc_driver()
+ {
+ $_random_keyword = ' RND('.time().')'; // database specific random keyword
+ }
/**
* Non-persistent database connection
@@ -79,6 +85,22 @@ class CI_DB_odbc_driver extends CI_DB { // --------------------------------------------------------------------
/**
+ * Set client character set
+ *
+ * @access public
+ * @param string
+ * @param string
+ * @return resource
+ */
+ function db_set_charset($charset, $collation)
+ {
+ // TODO - add support if needed
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Version number query string
*
* @access public
@@ -276,11 +298,20 @@ class CI_DB_odbc_driver extends CI_DB { * Generates a platform-specific query string so that the table names can be fetched
*
* @access private
+ * @param boolean
* @return string
*/
- function _list_tables()
+ function _list_tables($prefix_limit = FALSE)
{
- return "SHOW TABLES FROM `".$this->database."`";
+ $sql = "SHOW TABLES FROM `".$this->database."`";
+
+ if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+ {
+ //$sql .= " LIKE '".$this->dbprefix."%'";
+ return FALSE; // not currently supported
+ }
+
+ return $sql;
}
// --------------------------------------------------------------------
@@ -366,6 +397,58 @@ class CI_DB_odbc_driver extends CI_DB { // --------------------------------------------------------------------
/**
+ * Protect Identifiers
+ *
+ * This function adds backticks if appropriate based on db type
+ *
+ * @access private
+ * @param mixed the item to escape
+ * @param boolean only affect the first word
+ * @return mixed the item with backticks
+ */
+ function _protect_identifiers($item, $first_word_only = FALSE)
+ {
+ if (is_array($item))
+ {
+ $escaped_array = array();
+
+ foreach($item as $k=>$v)
+ {
+ $escaped_array[$this->_protect_identifiers($k)] = $this->_protect_identifiers($v, $first_word_only);
+ }
+
+ return $escaped_array;
+ }
+
+ // This function may get "item1 item2" as a string, and so
+ // we may need "`item1` `item2`" and not "`item1 item2`"
+ if (strpos($item, ' ') !== FALSE)
+ {
+ // This function may get "field >= 1", and need it to return "`field` >= 1"
+ if ($first_word_only === TRUE)
+ {
+ return '`'.preg_replace('/ /', '` ', $item, 1);
+ }
+
+ $item = preg_replace('/(^|\s|\()([\w\d\-\_]+?)(\s|\)|$)/iS', '$1`$2`$3', $item);
+ }
+
+ $exceptions = array('AS', '/', '-', '%', '+', '*');
+
+ foreach ($exceptions as $exception)
+ {
+ if (stristr($item, " `{$exception}` ") !== FALSE)
+ {
+ $item = preg_replace('/ `('.preg_quote($exception).')` /i', ' $1 ', $item);
+ }
+ }
+
+ return $item;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Insert statement
*
* Generates a platform-specific insert string from the supplied data
@@ -392,9 +475,11 @@ class CI_DB_odbc_driver extends CI_DB { * @param string the table name
* @param array the update data
* @param array the where clause
+ * @param array the orderby clause
+ * @param array the limit clause
* @return string
*/
- function _update($table, $values, $where, $limit = FALSE)
+ function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
{
foreach($values as $key => $val)
{
@@ -402,8 +487,29 @@ class CI_DB_odbc_driver extends CI_DB { }
$limit = (!$limit) ? '' : ' LIMIT '.$limit;
+
+ $orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
+
+ return "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where).$orderby.$limit;
+ }
+
- return "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where).$limit;
+ // --------------------------------------------------------------------
+
+ /**
+ * Truncate statement
+ *
+ * Generates a platform-specific truncate string from the supplied data
+ * If the database does not support the truncate() command
+ * This function maps to "DELETE FROM table"
+ *
+ * @access public
+ * @param string the table name
+ * @return string
+ */
+ function _truncate($table)
+ {
+ return $this->_delete($table);
}
// --------------------------------------------------------------------
@@ -416,13 +522,28 @@ class CI_DB_odbc_driver extends CI_DB { * @access public
* @param string the table name
* @param array the where clause
+ * @param string the limit clause
* @return string
*/
- function _delete($table, $where, $limit = FALSE)
+ function _delete($table, $where = array(), $like = array(), $limit = FALSE)
{
+ $conditions = '';
+
+ if (count($where) > 0 || count($like) > 0)
+ {
+ $conditions = "\nWHERE ";
+ $conditions .= implode("\n", $this->ar_where);
+
+ if (count($where) > 0 && count($like) > 0)
+ {
+ $conditions .= " AND ";
+ }
+ $conditions .= implode("\n", $like);
+ }
+
$limit = (!$limit) ? '' : ' LIMIT '.$limit;
- return "DELETE FROM ".$this->_escape_table($table)." WHERE ".implode(" ", $where).$limit;
+ return "DELETE FROM ".$table.$conditions.$limit;
}
// --------------------------------------------------------------------
diff --git a/system/database/drivers/odbc/odbc_forge.php b/system/database/drivers/odbc/odbc_forge.php new file mode 100644 index 000000000..1d79344c1 --- /dev/null +++ b/system/database/drivers/odbc/odbc_forge.php @@ -0,0 +1,236 @@ +<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package CodeIgniter
+ * @author Rick Ellis
+ * @copyright Copyright (c) 2006, EllisLab, Inc.
+ * @license http://www.codeigniter.com/user_guide/license.html
+ * @link http://www.codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * ODBC Forge Class
+ *
+ * @category Database
+ * @author Rick Ellis
+ * @link http://www.codeigniter.com/database/
+ */
+class CI_DB_odbc_forge extends CI_DB_forge {
+
+ /**
+ * Create database
+ *
+ * @access private
+ * @param string the database name
+ * @return bool
+ */
+ function _create_database()
+ {
+ // ODBC has no "create database" command since it's
+ // designed to connect to an existing database
+ if ($this->db->db_debug)
+ {
+ return $this->db->display_error('db_unsuported_feature');
+ }
+ return FALSE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Drop database
+ *
+ * @access private
+ * @param string the database name
+ * @return bool
+ */
+ function _drop_database($name)
+ {
+ // ODBC has no "drop database" command since it's
+ // designed to connect to an existing database
+ if ($this->db->db_debug)
+ {
+ return $this->db->display_error('db_unsuported_feature');
+ }
+ return FALSE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Create Table
+ *
+ * @access private
+ * @param string the table name
+ * @param array the fields
+ * @param mixed primary key(s)
+ * @param mixed key(s)
+ * @param boolean should 'IF NOT EXISTS' be added to the SQL
+ * @return bool
+ */
+ function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
+ {
+ $sql = 'CREATE TABLE ';
+
+ if ($if_not_exists === TRUE)
+ {
+ $sql .= 'IF NOT EXISTS ';
+ }
+
+ $sql .= $this->db->_escape_table($table)." (";
+ $current_field_count = 0;
+
+ foreach ($fields as $field=>$attributes)
+ {
+ // Numeric field names aren't allowed in databases, so if the key is
+ // numeric, we know it was assigned by PHP and the developer manually
+ // entered the field information, so we'll simply add it to the list
+ if (is_numeric($field))
+ {
+ $sql .= "\n\t$attributes";
+ }
+ else
+ {
+ $attributes = array_change_key_case($attributes, CASE_UPPER);
+
+ $sql .= "\n\t".$this->db->_protect_identifiers($field);
+
+ $sql .= ' '.$attributes['TYPE'];
+
+ if (array_key_exists('CONSTRAINT', $attributes))
+ {
+ $sql .= '('.$attributes['CONSTRAINT'].')';
+ }
+
+ if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
+ {
+ $sql .= ' UNSIGNED';
+ }
+
+ if (array_key_exists('DEFAULT', $attributes))
+ {
+ $sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
+ }
+
+ if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
+ {
+ $sql .= ' NULL';
+ }
+ else
+ {
+ $sql .= ' NOT NULL';
+ }
+
+ if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
+ {
+ $sql .= ' AUTO_INCREMENT';
+ }
+ }
+
+ // don't add a comma on the end of the last field
+ if (++$current_field_count < count($fields))
+ {
+ $sql .= ',';
+ }
+ }
+
+ if (count($primary_keys) > 0)
+ {
+ $primary_keys = $this->db->_protect_identifiers($primary_keys);
+ $sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")";
+ }
+
+ if (is_array($keys) && count($keys) > 0)
+ {
+ $keys = $this->db->_protect_identifiers($keys);
+ foreach ($keys as $key)
+ {
+ $sql .= ",\n\tFOREIGN KEY ($key)";
+ }
+ }
+
+ $sql .= "\n)";
+
+ return $sql;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Drop Table
+ *
+ * @access private
+ * @return bool
+ */
+ function _drop_table($table)
+ {
+ // Not a supported ODBC feature
+ if ($this->db->db_debug)
+ {
+ return $this->db->display_error('db_unsuported_feature');
+ }
+ return FALSE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Alter table query
+ *
+ * Generates a platform-specific query so that a table can be altered
+ * Called by add_column(), drop_column(), and column_alter(),
+ *
+ * @access private
+ * @param string the ALTER type (ADD, DROP, CHANGE)
+ * @param string the column name
+ * @param string the table name
+ * @param string the column definition
+ * @param string the default value
+ * @param boolean should 'NOT NULL' be added
+ * @param string the field after which we should add the new field
+ * @return object
+ */
+ function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '')
+ {
+ $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ".$this->db->_protect_identifiers($column_name);
+
+ // DROP has everything it needs now.
+ if ($alter_type == 'DROP')
+ {
+ return $sql;
+ }
+
+ $sql .= " $column_definition";
+
+ if ($default_value != '')
+ {
+ $sql .= " DEFAULT \"$default_value\"";
+ }
+
+ if ($null === NULL)
+ {
+ $sql .= ' NULL';
+ }
+ else
+ {
+ $sql .= ' NOT NULL';
+ }
+
+ if ($after_field != '')
+ {
+ $sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
+ }
+
+ return $sql;
+
+ }
+
+}
+?>
\ No newline at end of file diff --git a/system/database/drivers/odbc/odbc_result.php b/system/database/drivers/odbc/odbc_result.php index e909fd743..53c317356 100644 --- a/system/database/drivers/odbc/odbc_result.php +++ b/system/database/drivers/odbc/odbc_result.php @@ -192,7 +192,6 @@ class CI_DB_odbc_result extends CI_DB_result { * @access private
* @return object
*/
-
function _odbc_fetch_object(& $odbc_result) {
$rs = array();
$rs_obj = false;
@@ -215,7 +214,6 @@ class CI_DB_odbc_result extends CI_DB_result { * @access private
* @return array
*/
-
function _odbc_fetch_array(& $odbc_result) {
$rs = array();
$rs_assoc = false;
diff --git a/system/database/drivers/odbc/odbc_utility.php b/system/database/drivers/odbc/odbc_utility.php index 97e950fc1..d64d15af5 100644 --- a/system/database/drivers/odbc/odbc_utility.php +++ b/system/database/drivers/odbc/odbc_utility.php @@ -24,18 +24,15 @@ */
class CI_DB_odbc_utility extends CI_DB_utility {
-
/**
- * Create database
+ * List databases
*
* @access private
- * @param string the database name
* @return bool
*/
- function _create_database()
+ function _list_databases()
{
- // ODBC has no "create database" command since it's
- // designed to connect to an existing database
+ // Not sure if ODBC lets you list all databases...
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsuported_feature');
@@ -46,16 +43,17 @@ class CI_DB_odbc_utility extends CI_DB_utility { // --------------------------------------------------------------------
/**
- * Drop database
+ * Optimize table query
+ *
+ * Generates a platform-specific query so that a table can be optimized
*
* @access private
- * @param string the database name
- * @return bool
+ * @param string the table name
+ * @return object
*/
- function _drop_database($name)
+ function _optimize_table($table)
{
- // ODBC has no "drop database" command since it's
- // designed to connect to an existing database
+ // Not a supported ODBC feature
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsuported_feature');
@@ -66,14 +64,17 @@ class CI_DB_odbc_utility extends CI_DB_utility { // --------------------------------------------------------------------
/**
- * List databases
+ * Repair table query
+ *
+ * Generates a platform-specific query so that a table can be repaired
*
* @access private
- * @return bool
+ * @param string the table name
+ * @return object
*/
- function _list_databases()
+ function _repair_table($table)
{
- // Not sure if ODBC lets you list all databases...
+ // Not a supported ODBC feature
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsuported_feature');
@@ -84,35 +85,37 @@ class CI_DB_odbc_utility extends CI_DB_utility { // --------------------------------------------------------------------
/**
- * Drop Table
+ * ODBC Export
*
* @access private
- * @return bool
+ * @param array Preferences
+ * @return mixed
*/
- function _drop_table($table)
+ function _backup($params = array())
{
- // Not a supported ODBC feature
- if ($this->db->db_debug)
- {
- return $this->db->display_error('db_unsuported_feature');
- }
- return FALSE;
+ // Currently unsupported
+ return $this->db->display_error('db_unsuported_feature');
}
-
- // --------------------------------------------------------------------
-
+
/**
- * Optimize table query
*
- * Generates a platform-specific query so that a table can be optimized
+ * The functions below have been deprecated as of 1.6, and are only here for backwards
+ * compatibility. They now reside in dbforge(). The use of dbutils for database manipulation
+ * is STRONGLY discouraged in favour if using dbforge.
+ *
+ */
+
+ /**
+ * Create database
*
* @access private
- * @param string the table name
- * @return object
+ * @param string the database name
+ * @return bool
*/
- function _optimize_table($table)
+ function _create_database()
{
- // Not a supported ODBC feature
+ // ODBC has no "create database" command since it's
+ // designed to connect to an existing database
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsuported_feature');
@@ -123,39 +126,21 @@ class CI_DB_odbc_utility extends CI_DB_utility { // --------------------------------------------------------------------
/**
- * Repair table query
- *
- * Generates a platform-specific query so that a table can be repaired
+ * Drop database
*
* @access private
- * @param string the table name
- * @return object
+ * @param string the database name
+ * @return bool
*/
- function _repair_table($table)
+ function _drop_database($name)
{
- // Not a supported ODBC feature
+ // ODBC has no "drop database" command since it's
+ // designed to connect to an existing database
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsuported_feature');
}
return FALSE;
}
-
- // --------------------------------------------------------------------
-
- /**
- * ODBC Export
- *
- * @access private
- * @param array Preferences
- * @return mixed
- */
- function _backup($params = array())
- {
- // Currently unsupported
- return $this->db->display_error('db_unsuported_feature');
- }
-
}
-
?>
\ No newline at end of file |