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authorAndrey Andreev <narf@bofh.bg>2012-03-01 19:23:01 +0100
committerAndrey Andreev <narf@bofh.bg>2012-03-01 19:23:01 +0100
commitdd389df69cd1ab74316ac7a7e227a5f47f16f95c (patch)
tree3d8e7fcfaf6df7c10dc3870455d7ef63b9d50762 /system/database/DB_driver.php
parentc5a1f93ef25c99df4035ef7182a6200b91afabab (diff)
parent8edf87dbb0dcbe61e8cbaa6229c70a46bee6dbd4 (diff)
Merge upstream branch
Diffstat (limited to 'system/database/DB_driver.php')
-rw-r--r--system/database/DB_driver.php97
1 files changed, 46 insertions, 51 deletions
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index 661b42ced..5f435e363 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -81,8 +81,7 @@ class CI_DB_driver {
var $stmt_id;
var $curs_id;
var $limit_used;
-
-
+
/**
* Constructor. Accepts one parameter containing the database
@@ -108,11 +107,9 @@ class CI_DB_driver {
/**
* Initialize Database Settings
*
- * @access private Called by the constructor
- * @param mixed
- * @return void
+ * @return bool
*/
- function initialize()
+ public function initialize()
{
// If an existing connection resource is available
// there is no need to connect and select the database
@@ -126,7 +123,7 @@ class CI_DB_driver {
// Connect to the database and set the connection ID
$this->conn_id = ($this->pconnect == FALSE) ? $this->db_connect() : $this->db_pconnect();
- // No connection resource? Check if there is a failover else throw an error
+ // No connection resource? Check if there is a failover else throw an error
if ( ! $this->conn_id)
{
// Check if there is a failover set
@@ -168,31 +165,19 @@ class CI_DB_driver {
// ----------------------------------------------------------------
// Select the DB... assuming a database name is specified in the config file
- if ($this->database != '')
+ if ($this->database !== '' && ! $this->db_select())
{
- if ( ! $this->db_select())
- {
- log_message('error', 'Unable to select database: '.$this->database);
+ log_message('error', 'Unable to select database: '.$this->database);
- if ($this->db_debug)
- {
- $this->display_error('db_unable_to_select', $this->database);
- }
- return FALSE;
- }
- else
+ if ($this->db_debug)
{
- // We've selected the DB. Now we set the character set
- if ( ! $this->db_set_charset($this->char_set, $this->dbcollat))
- {
- return FALSE;
- }
-
- return TRUE;
+ $this->display_error('db_unable_to_select', $this->database);
}
+ return FALSE;
}
- return TRUE;
+ // Now we set the character set and that's all
+ return $this->db_set_charset($this->char_set, $this->dbcollat);
}
// --------------------------------------------------------------------
@@ -200,20 +185,19 @@ class CI_DB_driver {
/**
* Set client character set
*
- * @access public
* @param string
* @param string
- * @return resource
+ * @return bool
*/
- function db_set_charset($charset, $collation)
+ public function db_set_charset($charset, $collation = '')
{
- if ( ! $this->_db_set_charset($this->char_set, $this->dbcollat))
+ if (method_exists($this, '_db_set_charset') && ! $this->_db_set_charset($charset, $collation))
{
- log_message('error', 'Unable to set database connection charset: '.$this->char_set);
+ log_message('error', 'Unable to set database connection charset: '.$charset);
if ($this->db_debug)
{
- $this->display_error('db_unable_to_set_charset', $this->char_set);
+ $this->display_error('db_unable_to_set_charset', $charset);
}
return FALSE;
@@ -257,7 +241,7 @@ class CI_DB_driver {
// Some DBs have functions that return the version, and don't run special
// SQL queries per se. In these instances, just return the result.
- $driver_version_exceptions = array('oci8', 'sqlite', 'cubrid', 'pdo');
+ $driver_version_exceptions = array('oci8', 'sqlite', 'cubrid', 'pdo', 'mysqli');
if (in_array($this->dbdriver, $driver_version_exceptions))
{
@@ -660,17 +644,12 @@ class CI_DB_driver {
/**
* Determines if a query is a "write" type.
*
- * @access public
* @param string An SQL query string
- * @return boolean
+ * @return bool
*/
- function is_write_type($sql)
+ public function is_write_type($sql)
{
- if ( ! preg_match('/^\s*"?(SET|INSERT|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD DATA|COPY|ALTER|GRANT|REVOKE|LOCK|UNLOCK)\s+/i', $sql))
- {
- return FALSE;
- }
- return TRUE;
+ return (bool) preg_match('/^\s*"?(SET|INSERT|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD DATA|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|OPTIMIZE)\s+/i', $sql);
}
// --------------------------------------------------------------------
@@ -814,20 +793,23 @@ class CI_DB_driver {
if ($query->num_rows() > 0)
{
- foreach ($query->result_array() as $row)
+ $table = FALSE;
+ $rows = $query->result_array();
+ $key = (($row = current($rows)) && in_array('table_name', array_map('strtolower', array_keys($row))));
+
+ if ($key)
{
- if (isset($row['TABLE_NAME']))
- {
- $retval[] = $row['TABLE_NAME'];
- }
- else
- {
- $retval[] = array_shift($row);
- }
+ $table = array_key_exists('TABLE_NAME', $row) ? 'TABLE_NAME' : 'table_name';
+ }
+
+ foreach ($rows as $row)
+ {
+ $retval[] = ( ! $table) ? current($row) : $row[$table];
}
}
$this->data_cache['table_names'] = $retval;
+
return $this->data_cache['table_names'];
}
@@ -1436,10 +1418,23 @@ class CI_DB_driver {
return $item.$alias;
}
+
+ // --------------------------------------------------------------------
+ /**
+ * Dummy method that allows Active Record class to be disabled
+ *
+ * This function is used extensively by every db driver.
+ *
+ * @access private
+ * @return void
+ */
+ protected function _reset_select()
+ {
+
+ }
}
-
/* End of file DB_driver.php */
/* Location: ./system/database/DB_driver.php */