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authorAndrey Andreev <narf@bofh.bg>2012-03-28 12:45:04 +0200
committerAndrey Andreev <narf@bofh.bg>2012-03-28 12:45:04 +0200
commit2cb262ff0ee22f3928e39f19dc0112b9eb26cabc (patch)
tree9ccc0e2dc903ed4b40b7b73d41f5b98dfb45514c /system/database/drivers/oci8/oci8_driver.php
parentc2c4694469be036120156d16364c7a822c744094 (diff)
parent3b2587e1559d2cbe751d04f801f999ef3fa4e74c (diff)
Merge upstream branch
Diffstat (limited to 'system/database/drivers/oci8/oci8_driver.php')
-rw-r--r--system/database/drivers/oci8/oci8_driver.php245
1 files changed, 141 insertions, 104 deletions
diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
index e3846bc1a..3bc8c114c 100644
--- a/system/database/drivers/oci8/oci8_driver.php
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -1,13 +1,13 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?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:
@@ -25,8 +25,6 @@
* @filesource
*/
-// ------------------------------------------------------------------------
-
/**
* oci8 Database Adapter Class
*
@@ -50,46 +48,125 @@
* @author Kelly McArdle
*
*/
-
class CI_DB_oci8_driver extends CI_DB {
- var $dbdriver = 'oci8';
+ public $dbdriver = 'oci8';
// The character used for excaping
- var $_escape_char = '"';
+ protected $_escape_char = '"';
// clause and character used for LIKE escape sequences
- var $_like_escape_str = " escape '%s' ";
- var $_like_escape_chr = '!';
+ protected $_like_escape_str = " ESCAPE '%s' ";
+ protected $_like_escape_chr = '!';
/**
* The syntax to count rows is slightly different across different
* 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(1) AS ";
- var $_random_keyword = ' ASC'; // not currently supported
+ protected $_count_string = 'SELECT COUNT(1) AS ';
+ protected $_random_keyword = ' ASC'; // not currently supported
// Set "auto commit" by default
- var $_commit = OCI_COMMIT_ON_SUCCESS;
+ protected $_commit = OCI_COMMIT_ON_SUCCESS;
// need to track statement id and cursor id
- var $stmt_id;
- var $curs_id;
+ public $stmt_id;
+ public $curs_id;
// if we use a limit, we will add a field that will
// throw off num_fields later
- var $limit_used;
+ public $limit_used;
+
+ public function __construct($params)
+ {
+ parent::__construct($params);
+
+ $valid_dsns = array(
+ 'tns' => '/^\(DESCRIPTION=(\(.+\)){2,}\)$/', // TNS
+ // Easy Connect string (Oracle 10g+)
+ 'ec' => '/^(\/\/)?[a-z0-9.:_-]+(:[1-9][0-9]{0,4})?(\/[a-z0-9$_]+)?(:[^\/])?(\/[a-z0-9$_]+)?$/i',
+ 'in' => '/^[a-z0-9$_]+$/i' // Instance name (defined in tnsnames.ora)
+ );
+
+ /* Space characters don't have any effect when actually
+ * connecting, but can be a hassle while validating the DSN.
+ */
+ $this->dsn = str_replace(array("\n", "\r", "\t", ' '), '', $this->dsn);
+
+ if ($this->dsn !== '')
+ {
+ foreach ($valid_dsns as $regexp)
+ {
+ if (preg_match($regexp, $this->dsn))
+ {
+ return;
+ }
+ }
+ }
+
+ // Legacy support for TNS in the hostname configuration field
+ $this->hostname = str_replace(array("\n", "\r", "\t", ' '), '', $this->hostname);
+ if (preg_match($valid_dsns['tns'], $this->hostname))
+ {
+ $this->dsn = $this->hostname;
+ return;
+ }
+ elseif ($this->hostname !== '' && strpos($this->hostname, '/') === FALSE && strpos($this->hostname, ':') === FALSE
+ && (( ! empty($this->port) && ctype_digit($this->port)) OR $this->database !== ''))
+ {
+ /* If the hostname field isn't empty, doesn't contain
+ * ':' and/or '/' and if port and/or database aren't
+ * empty, then the hostname field is most likely indeed
+ * just a hostname. Therefore we'll try and build an
+ * Easy Connect string from these 3 settings, assuming
+ * that the database field is a service name.
+ */
+ $this->dsn = $this->hostname
+ .(( ! empty($this->port) && ctype_digit($this->port)) ? ':'.$this->port : '')
+ .($this->database !== '' ? '/'.ltrim($this->database, '/') : '');
+
+ if (preg_match($valid_dsns['ec'], $this->dsn))
+ {
+ return;
+ }
+ }
+
+ /* At this point, we can only try and validate the hostname and
+ * database fields separately as DSNs.
+ */
+ if (preg_match($valid_dsns['ec'], $this->hostname) OR preg_match($valid_dsns['in'], $this->hostname))
+ {
+ $this->dsn = $this->hostname;
+ return;
+ }
+
+ $this->database = str_replace(array("\n", "\r", "\t", ' '), '', $this->database);
+ foreach ($valid_dsns as $regexp)
+ {
+ if (preg_match($regexp, $this->database))
+ {
+ return;
+ }
+ }
+
+ /* Well - OK, an empty string should work as well.
+ * PHP will try to use environment variables to
+ * determine which Oracle instance to connect to.
+ */
+ $this->dsn = '';
+ }
/**
* Non-persistent database connection
*
- * @access private called by the base class
- * @return resource
+ * @return resource
*/
public function db_connect()
{
- return @oci_connect($this->username, $this->password, $this->hostname, $this->char_set);
+ return ( ! empty($this->char_set))
+ ? @oci_connect($this->username, $this->password, $this->dsn, $this->char_set)
+ : @oci_connect($this->username, $this->password, $this->dsn);
}
// --------------------------------------------------------------------
@@ -97,29 +174,13 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Persistent database connection
*
- * @access private called by the base class
- * @return resource
+ * @return resource
*/
public function db_pconnect()
{
- return @oci_pconnect($this->username, $this->password, $this->hostname, $this->char_set);
- }
-
- // --------------------------------------------------------------------
-
- /**
- * Reconnect
- *
- * Keep / reestablish the db connection if no queries have been
- * sent for a length of time exceeding the server's idle timeout
- *
- * @access public
- * @return void
- */
- public function reconnect()
- {
- // not implemented in oracle
- return;
+ return ( ! empty($this->char_set))
+ ? @oci_pconnect($this->username, $this->password, $this->dsn, $this->char_set)
+ : @oci_pconnect($this->username, $this->password, $this->dsn);
}
// --------------------------------------------------------------------
@@ -127,8 +188,7 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Select the database
*
- * @access private called by the base class
- * @return resource
+ * @return resource
*/
public function db_select()
{
@@ -155,9 +215,8 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Execute the query
*
- * @access protected called by the base class
- * @param string an SQL query
- * @return resource
+ * @param string an SQL query
+ * @return resource
*/
protected function _execute($sql)
{
@@ -172,25 +231,23 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Generate a statement ID
*
- * @access private
- * @param string an SQL query
- * @return none
+ * @param string an SQL query
+ * @return void
*/
- private function _set_stmt_id($sql)
+ protected function _set_stmt_id($sql)
{
if ( ! is_resource($this->stmt_id))
{
$this->stmt_id = oci_parse($this->conn_id, $sql);
}
}
-
+
// --------------------------------------------------------------------
/**
- * getCursor. Returns a cursor from the datbase
+ * Get cursor. Returns a cursor from the database
*
- * @access public
- * @return cursor id
+ * @return cursor id
*/
public function get_cursor()
{
@@ -203,11 +260,10 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Stored Procedure. Executes a stored procedure
*
- * @access public
- * @param package package stored procedure is in
- * @param procedure stored procedure to execute
- * @param params array of parameters
- * @return array
+ * @param string package stored procedure is in
+ * @param string stored procedure to execute
+ * @param array parameters
+ * @return object
*
* params array keys
*
@@ -256,10 +312,9 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Bind parameters
*
- * @access private
- * @return none
+ * @return void
*/
- private function _bind_params($params)
+ protected function _bind_params($params)
{
if ( ! is_array($params) OR ! is_resource($this->stmt_id))
{
@@ -285,7 +340,6 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Begin Transaction
*
- * @access public
* @return bool
*/
public function trans_begin($test_mode = FALSE)
@@ -315,7 +369,6 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Commit Transaction
*
- * @access public
* @return bool
*/
public function trans_commit()
@@ -341,7 +394,6 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Rollback Transaction
*
- * @access public
* @return bool
*/
public function trans_rollback()
@@ -401,8 +453,7 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Affected Rows
*
- * @access public
- * @return integer
+ * @return int
*/
public function affected_rows()
{
@@ -414,8 +465,7 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Insert ID
*
- * @access public
- * @return integer
+ * @return int
*/
public function insert_id()
{
@@ -431,9 +481,8 @@ class CI_DB_oci8_driver extends CI_DB {
* Generates a platform-specific query string that counts all records in
* the specified database
*
- * @access public
- * @param string
- * @return string
+ * @param string
+ * @return string
*/
public function count_all($table = '')
{
@@ -460,8 +509,7 @@ class CI_DB_oci8_driver extends CI_DB {
*
* Generates a platform-specific query string so that the table names can be fetched
*
- * @access protected
- * @param boolean
+ * @param bool
* @return string
*/
protected function _list_tables($prefix_limit = FALSE)
@@ -483,9 +531,8 @@ class CI_DB_oci8_driver extends CI_DB {
*
* Generates a platform-specific query string so that the column names can be fetched
*
- * @access protected
- * @param string the table name
- * @return string
+ * @param string the table name
+ * @return string
*/
protected function _list_columns($table = '')
{
@@ -499,9 +546,8 @@ class CI_DB_oci8_driver extends CI_DB {
*
* Generates a platform-specific query so that the column data can be retrieved
*
- * @access public
- * @param string the table name
- * @return object
+ * @param string the table name
+ * @return string
*/
protected function _field_data($table)
{
@@ -546,11 +592,10 @@ class CI_DB_oci8_driver extends CI_DB {
*
* This function escapes column and table names
*
- * @access protected
* @param string
* @return string
*/
- protected function _escape_identifiers($item)
+ public function _escape_identifiers($item)
{
if ($this->_escape_char == '')
{
@@ -589,9 +634,8 @@ class CI_DB_oci8_driver extends CI_DB {
* This function implicitly groups FROM tables so there is no confusion
* about operator precedence in harmony with SQL standards
*
- * @access protected
- * @param type
- * @return type
+ * @param array
+ * @return string
*/
protected function _from_tables($tables)
{
@@ -610,11 +654,10 @@ class CI_DB_oci8_driver extends CI_DB {
*
* 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
+ * @param string the table name
+ * @param array the insert keys
+ * @param array the insert values
+ * @return string
*/
protected function _insert($table, $keys, $values)
{
@@ -628,10 +671,10 @@ class CI_DB_oci8_driver extends CI_DB {
*
* Generates a platform-specific insert string from the supplied data
*
- * @param string the table name
- * @param array the insert keys
- * @param array the insert values
- * @return string
+ * @param string the table name
+ * @param array the insert keys
+ * @param array the insert values
+ * @return string
*/
protected function _insert_batch($table, $keys, $values)
{
@@ -655,7 +698,6 @@ class CI_DB_oci8_driver extends CI_DB {
*
* Generates a platform-specific update string from the supplied data
*
- * @access protected
* @param string the table name
* @param array the update data
* @param array the where clause
@@ -692,7 +734,6 @@ class CI_DB_oci8_driver extends CI_DB {
* If the database does not support the truncate() command
* This function maps to "DELETE FROM table"
*
- * @access protected
* @param string the table name
* @return string
*/
@@ -708,7 +749,6 @@ class CI_DB_oci8_driver extends CI_DB {
*
* Generates a platform-specific delete string from the supplied data
*
- * @access protected
* @param string the table name
* @param array the where clause
* @param string the limit clause
@@ -742,11 +782,10 @@ class CI_DB_oci8_driver extends CI_DB {
*
* Generates a platform-specific LIMIT clause
*
- * @access protected
- * @param string the sql query string
- * @param integer the number of rows to limit the query to
- * @param integer the offset value
- * @return string
+ * @param string the sql query string
+ * @param int the number of rows to limit the query to
+ * @param int the offset value
+ * @return string
*/
protected function _limit($sql, $limit, $offset)
{
@@ -769,16 +808,14 @@ class CI_DB_oci8_driver extends CI_DB {
/**
* Close DB Connection
*
- * @access protected
- * @param resource
- * @return void
+ * @param resource
+ * @return void
*/
protected function _close($conn_id)
{
@oci_close($conn_id);
}
-
}
/* End of file oci8_driver.php */