1 files changed, 608 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..707394d53
--- /dev/null
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -0,0 +1,608 @@
+<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * Code Igniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package     CodeIgniter
+ * @author      Rick Ellis
+ * @copyright   Copyright (c) 2006, pMachine, Inc.
+ * @license     http://www.codeignitor.com/user_guide/license.html 
+ * @link        http://www.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      Rick Ellis
+ * @link        http://www.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 {
+
+	// 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, $this->hostname);
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Select the database
+     *
+     * @access  private called by the base class
+     * @return  resource
+     */
+    function db_select()
+    {
+        return TRUE;
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Execute the query
+     *
+     * @access  private called by the base class
+     * @param   string  an SQL query
+     * @return  resource
+     */
+    function _execute($sql)
+    {
+        // oracle must parse the query before it
+        // is run, all of the actions with
+        // the query are based off the statement id
+        // returned by ociparse        
+        $this->_set_stmt_id($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()
+    {
+		return $this->curs_id = ocinewcursor($this->conn_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 $ret;
+	}
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Escape String
+     *
+     * @access  public
+     * @param   string
+     * @return  string
+     */
+    function escape_str($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 0;
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * "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 = $this->query("SELECT COUNT(1) AS numrows FROM ".$table);
+
+        if ($query == FALSE)
+            {
+            return 0;
+            }
+
+        $row = $query->row();
+        return $row->NUMROWS;
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * The error message string
+     *
+     * @access  public
+     * @return  string
+     */
+    function error_message()
+    {
+        $error = ocierror($this->conn_id);
+        return $error['message'];
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * The error message number
+     *
+     * @access  public
+     * @return  integer
+     */
+    function error_number()
+    {
+        $error = ocierror($this->conn_id);
+        return $error['code'];
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Escape Table Name
+     *
+     * This function adds backticks if the table name has a period
+     * in it. Some DBs will get cranky unless periods are escaped
+     *
+     * @access  public
+     * @param   string  the table name
+     * @return  string
+     */
+    function escape_table($table)
+    {
+        if (stristr($table, '.'))
+        {
+            $table = preg_replace("/\./", "`.`", $table);
+        }
+
+        return $table;
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Field data query
+     *
+     * Generates a platform-specific query so that the column data can be retrieved
+     *
+     * @access  public
+     * @param   string  the table name
+     * @return  object
+     */
+    function _field_data($table)
+    {
+        $sql = "SELECT * FROM ".$this->escape_table($table)." where rownum = 1";
+        $query = $this->query($sql);
+        return $query->field_data();
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Insert statement
+     *
+     * Generates a platform-specific insert string from the supplied data
+     *
+     * @access  public
+     * @param   string  the table name
+     * @param   array   the insert keys
+     * @param   array   the insert values
+     * @return  string
+     */
+    function _insert($table, $keys, $values)
+    {
+    return "INSERT INTO ".$this->escape_table($table)." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Update statement
+     *
+     * Generates a platform-specific update string from the supplied data
+     *
+     * @access  public
+     * @param   string  the table name
+     * @param   array   the update data
+     * @param   array   the where clause
+     * @return  string
+     */
+    function _update($table, $values, $where)
+    {
+        foreach($values as $key => $val)
+        {
+            $valstr[] = $key." = ".$val;
+        }
+
+        return "UPDATE ".$this->escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where);
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Delete statement
+     *
+     * Generates a platform-specific delete string from the supplied data
+     *
+     * @access  public
+     * @param   string  the table name
+     * @param   array   the where clause
+     * @return  string
+     */
+    function _delete($table, $where)
+    {
+        return "DELETE FROM ".$this->escape_table($table)." WHERE ".implode(" ", $where);
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Version number query string
+     *
+     * @access  public
+     * @return  string
+     */
+    function _version()
+    {
+        $ver = ociserverversion($this->conn_id);
+        return $ver;
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Show table query
+     *
+     * Generates a platform-specific query string so that the table names can be fetched
+     *
+     * @access  public
+     * @return  string
+     */
+    function _show_tables()
+    {
+        return "select TABLE_NAME FROM ALL_TABLES";
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Show columnn query
+     *
+     * Generates a platform-specific query string so that the column names can be fetched
+     *
+     * @access  public
+     * @param   string  the table name
+     * @return  string
+     */
+    function _show_columns($table = '')
+    {
+        return "SELECT COLUMN_NAME FROM all_tab_columns WHERE table_name = '$table'";
+    }
+
+    // --------------------------------------------------------------------
+
+    /**
+     * Limit string
+     *
+     * Generates a platform-specific LIMIT clause
+     *
+     * @access  public
+     * @param   string  the sql query string
+     * @param   integer the number of rows to limit the query to
+     * @param   integer the offset value
+     * @return  string
+     */
+    function _limit($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);
+    }
+
+}
+
+
+?>
\ No newline at end of file