Initial commit

Signed-off-by: Florian Pritz <bluewind@xssn.at>

1 files changed, 780 insertions, 0 deletions

diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
new file mode 100644
index 000000000..614571940
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -0,0 +1,780 @@
+<?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	  	ExpressionEngine Dev Team
+ * @copyright   Copyright (c) 2008 - 2009, EllisLab, Inc.
+ * @license	 	http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since	   	Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * oci8 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	  	ExpressionEngine Dev Team
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+
+/**
+ * oci8 Database Adapter Class
+ *
+ * This is a modification of the DB_driver class to
+ * permit access to oracle databases
+ *
+ * NOTE: this uses the PHP 4 oci methods
+ *
+ * @author	  Kelly McArdle
+ *
+ */
+
+class CI_DB_oci8_driver extends CI_DB {
+
+	var $dbdriver = 'oci8';
+	
+	// The character used for excaping
+	var $_escape_char = '"';
+	
+	// clause and character used for LIKE escape sequences
+	var $_like_escape_str = " escape '%s' ";
+	var $_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
+
+	// Set "auto commit" by default
+	var $_commit = OCI_COMMIT_ON_SUCCESS;
+
+	// need to track statement id and cursor id
+	var $stmt_id;
+	var $curs_id;
+
+	// if we use a limit, we will add a field that will
+	// throw off num_fields later
+	var $limit_used;
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @access  private called by the base class
+	 * @return  resource
+	 */
+	function db_connect()
+	{
+		return @ocilogon($this->username, $this->password, $this->hostname);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Persistent database connection
+	 *
+	 * @access  private called by the base class
+	 * @return  resource
+	 */
+	function db_pconnect()
+	{
+		return @ociplogon($this->username, $this->password, $this->hostname);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @access	public
+	 * @return	void
+	 */
+	function reconnect()
+	{
+		// not implemented in oracle
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @access  private called by the base class
+	 * @return  resource
+	 */
+	function db_select()
+	{
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set client character set
+	 *
+	 * @access	public
+	 * @param	string
+	 * @param	string
+	 * @return	resource
+	 */
+	function db_set_charset($charset, $collation)
+	{
+		// @todo - add support if needed
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+	
+	/**
+	 * Version number query string
+	 *
+	 * @access  public
+	 * @return  string
+	 */
+	function _version()
+	{
+		return ociserverversion($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @access  private called by the base class
+	 * @param   string  an SQL query
+	 * @return  resource
+	 */
+	function _execute($sql)
+	{
+		// oracle must parse the query before it is run. All of the actions with
+		// the query are based on the statement id returned by ociparse
+		$this->stmt_id = FALSE;
+		$this->_set_stmt_id($sql);
+		ocisetprefetch($this->stmt_id, 1000);
+		return @ociexecute($this->stmt_id, $this->_commit);
+	}
+
+	/**
+	 * Generate a statement ID
+	 *
+	 * @access  private
+	 * @param   string  an SQL query
+	 * @return  none
+	 */
+	function _set_stmt_id($sql)
+	{
+		if ( ! is_resource($this->stmt_id))
+		{
+			$this->stmt_id = ociparse($this->conn_id, $this->_prep_query($sql));
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * 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;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * getCursor.  Returns a cursor from the datbase
+	 *
+	 * @access  public
+	 * @return  cursor id
+	 */
+	function get_cursor()
+	{
+		$this->curs_id = ocinewcursor($this->conn_id);
+		return $this->curs_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Stored Procedure.  Executes a stored procedure
+	 *
+	 * @access  public
+	 * @param   package	 package stored procedure is in
+	 * @param   procedure   stored procedure to execute
+	 * @param   params	  array of parameters
+	 * @return  array
+	 *
+	 * params array keys
+	 *
+	 * KEY	  OPTIONAL	NOTES
+	 * name		no		the name of the parameter should be in :<param_name> format
+	 * value	no		the value of the parameter.  If this is an OUT or IN OUT parameter,
+	 *					this should be a reference to a variable
+	 * type		yes		the type of the parameter
+	 * length	yes		the max size of the parameter
+	 */
+	function stored_procedure($package, $procedure, $params)
+	{
+		if ($package == '' OR $procedure == '' OR ! is_array($params))
+		{
+			if ($this->db_debug)
+			{
+				log_message('error', 'Invalid query: '.$package.'.'.$procedure);
+				return $this->display_error('db_invalid_query');
+			}
+			return FALSE;
+		}
+		
+		// build the query string
+		$sql = "begin $package.$procedure(";
+
+		$have_cursor = FALSE;
+		foreach($params as $param)
+		{
+			$sql .= $param['name'] . ",";
+			
+			if (array_key_exists('type', $param) && ($param['type'] == OCI_B_CURSOR))
+			{
+				$have_cursor = TRUE;
+			}
+		}
+		$sql = trim($sql, ",") . "); end;";
+				
+		$this->stmt_id = FALSE;
+		$this->_set_stmt_id($sql);
+		$this->_bind_params($params);
+		$this->query($sql, FALSE, $have_cursor);
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Bind parameters
+	 *
+	 * @access  private
+	 * @return  none
+	 */
+	function _bind_params($params)
+	{
+		if ( ! is_array($params) OR ! is_resource($this->stmt_id))
+		{
+			return;
+		}
+		
+		foreach ($params as $param)
+		{
+ 			foreach (array('name', 'value', 'type', 'length') as $val)
+			{
+				if ( ! isset($param[$val]))
+				{
+					$param[$val] = '';
+				}
+			}
+
+			ocibindbyname($this->stmt_id, $param['name'], $param['value'], $param['length'], $param['type']);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @access	public
+	 * @return	bool		
+	 */	
+	function trans_begin($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->_commit = OCI_DEFAULT;
+		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;
+		}
+
+		$ret = OCIcommit($this->conn_id);
+		$this->_commit = OCI_COMMIT_ON_SUCCESS;
+		return $ret;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * 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;
+		}
+
+		$ret = OCIrollback($this->conn_id);
+		$this->_commit = OCI_COMMIT_ON_SUCCESS;
+		return $ret;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape String
+	 *
+	 * @access  public
+	 * @param   string
+	 * @param	bool	whether or not the string will be used in a LIKE condition
+	 * @return  string
+	 */
+	function escape_str($str, $like = FALSE)
+	{
+		if (is_array($str))
+		{
+			foreach($str as $key => $val)
+	   		{
+				$str[$key] = $this->escape_str($val, $like);
+	   		}
+   		
+	   		return $str;
+	   	}
+
+		// Access the CI object
+		$CI =& get_instance();
+
+		$str = $CI->input->_remove_invisible_characters($str);
+		
+		// escape LIKE condition wildcards
+		if ($like === TRUE)
+		{
+			$str = str_replace(	array('%', '_', $this->_like_escape_chr),
+								array($this->_like_escape_chr.'%', $this->_like_escape_chr.'_', $this->_like_escape_chr.$this->_like_escape_chr),
+								$str);
+		}
+		
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @access  public
+	 * @return  integer
+	 */
+	function affected_rows()
+	{
+		return @ocirowcount($this->stmt_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @access  public
+	 * @return  integer
+	 */
+	function insert_id()
+	{
+		// not supported in oracle
+		return $this->display_error('db_unsupported_function');
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Count All" query
+	 *
+	 * Generates a platform-specific query string that counts all records in
+	 * the specified database
+	 *
+	 * @access  public
+	 * @param   string
+	 * @return  string
+	 */
+	function count_all($table = '')
+	{
+		if ($table == '')
+		{
+			return 0;
+		}
+
+		$query = $this->query($this->_count_string . $this->_protect_identifiers('numrows') . " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));
+
+		if ($query == FALSE)
+		{
+			return 0;
+		}
+
+		$row = $query->row();
+		return (int) $row->numrows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @access  private
+	 * @param	boolean
+	 * @return  string
+	 */
+	function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = "SELECT TABLE_NAME FROM ALL_TABLES";
+
+		if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+		{
+			$sql .= " WHERE TABLE_NAME LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_char);
+		}
+		
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @access  public
+	 * @param   string  the table name
+	 * @return  string
+	 */
+	function _list_columns($table = '')
+	{
+		return "SELECT COLUMN_NAME FROM all_tab_columns WHERE table_name = '$table'";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @access  public
+	 * @param   string  the table name
+	 * @return  object
+	 */
+	function _field_data($table)
+	{
+		return "SELECT * FROM ".$table." where rownum = 1";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The error message string
+	 *
+	 * @access  private
+	 * @return  string
+	 */
+	function _error_message()
+	{
+		$error = ocierror($this->conn_id);
+		return $error['message'];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The error message number
+	 *
+	 * @access  private
+	 * @return  integer
+	 */
+	function _error_number()
+	{
+		$error = ocierror($this->conn_id);
+		return $error['code'];
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape the SQL Identifiers
+	 *
+	 * This function escapes column and table names
+	 *
+	 * @access	private
+	 * @param	string
+	 * @return	string
+	 */
+	function _escape_identifiers($item)
+	{
+		if ($this->_escape_char == '')
+		{
+			return $item;
+		}
+
+		foreach ($this->_reserved_identifiers as $id)
+		{
+			if (strpos($item, '.'.$id) !== FALSE)
+			{
+				$str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item);  
+				
+				// remove duplicates if the user already included the escape
+				return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+			}		
+		}
+	
+		if (strpos($item, '.') !== FALSE)
+		{
+			$str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;			
+		}
+		else
+		{
+			$str = $this->_escape_char.$item.$this->_escape_char;
+		}
+		
+		// remove duplicates if the user already included the escape
+		return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * From Tables
+	 *
+	 * This function implicitly groups FROM tables so there is no confusion
+	 * about operator precedence in harmony with SQL standards
+	 *
+	 * @access	public
+	 * @param	type
+	 * @return	type
+	 */
+	function _from_tables($tables)
+	{
+		if ( ! is_array($tables))
+		{
+			$tables = array($tables);
+		}
+		
+		return implode(', ', $tables);
+	}
+
+	// --------------------------------------------------------------------
+	
+	/**
+	 * Insert statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @access  public
+	 * @param   string  the table name
+	 * @param   array   the insert keys
+	 * @param   array   the insert values
+	 * @return  string
+	 */
+	function _insert($table, $keys, $values)
+	{
+	return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @param	array	the where clause
+	 * @param	array	the orderby clause
+	 * @param	array	the limit clause
+	 * @return	string
+	 */
+	function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
+	{
+		foreach($values as $key => $val)
+		{
+			$valstr[] = $key." = ".$val;
+		}
+		
+		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+		
+		$orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
+	
+		$sql = "UPDATE ".$table." SET ".implode(', ', $valstr);
+
+		$sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';
+
+		$sql .= $orderby.$limit;
+		
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 * If the database does not support the truncate() command
+	 * This function maps to "DELETE FROM table"
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	string
+	 */	
+	function _truncate($table)
+	{
+		return "TRUNCATE TABLE ".$table;
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the where clause
+	 * @param	string	the limit clause
+	 * @return	string
+	 */	
+	function _delete($table, $where = array(), $like = array(), $limit = FALSE)
+	{
+		$conditions = '';
+
+		if (count($where) > 0 OR 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 ".$table.$conditions.$limit;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Limit string
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @access  public
+	 * @param   string  the sql query string
+	 * @param   integer the number of rows to limit the query to
+	 * @param   integer the offset value
+	 * @return  string
+	 */
+	function _limit($sql, $limit, $offset)
+	{
+		$limit = $offset + $limit;
+		$newsql = "SELECT * FROM (select inner_query.*, rownum rnum FROM ($sql) inner_query WHERE rownum < $limit)";
+
+		if ($offset != 0)
+		{
+			$newsql .= " WHERE rnum >= $offset";
+		}
+
+		// remember that we used limits
+		$this->limit_used = TRUE;
+
+		return $newsql;
+	}	
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @access  public
+	 * @param   resource
+	 * @return  void
+	 */
+	function _close($conn_id)
+	{
+		@ocilogoff($conn_id);
+	}
+
+
+}
+
+
+
+/* End of file oci8_driver.php */
+/* Location: ./system/database/drivers/oci8/oci8_driver.php */
\ No newline at end of file