MDB2_BufferedResult_mysql Class Reference

Inheritance diagram for MDB2_BufferedResult_mysql:

Collaboration diagram for MDB2_BufferedResult_mysql:

Public Member Functions
	seek ($rownum=0)
	Seek to a specific row in a result set. More...
	valid ()
	Check if the end of the result set has been reached. More...
	numRows ()
	Returns the number of rows in a result object. More...
Public Member Functions inherited from MDB2_Result_mysql
&	fetchRow ($fetchmode=MDB2_FETCHMODE_DEFAULT, $rownum=null)
	Fetch a row and insert the data into an existing array. More...
	_getColumnNames ()
	Retrieve the names of columns returned by the DBMS in a query result. More...
	numCols ()
	Count the number of columns returned by the DBMS in a query result. More...
	free ()
	Free the internal resources associated with result. More...
Public Member Functions inherited from MDB2_Result_Common
	__construct ($db, $result, $limit=0, $offset=0)
	Constructor. More...
	fetch ($fetch_mode=ilDBConstants::FETCHMODE_ASSOC)
	fetchObject ()
	fetchAssoc ()
	MDB2_Result_Common ($db, $result, $limit=0, $offset=0)
	PHP 4 Constructor. More...
	setResultTypes ($types)
	Define the list of types to be associated with the columns of a given result set. More...
	seek ($rownum=0)
	Seek to a specific row in a result set. More...
&	fetchRow ($fetchmode=MDB2_FETCHMODE_DEFAULT, $rownum=null)
	Fetch and return a row of data. More...
	fetchOne ($colnum=0, $rownum=null)
	fetch single column from the next row from a result set More...
	fetchCol ($colnum=0)
	Fetch and return a column from the current row pointer position. More...
	fetchAll ($fetchmode=MDB2_FETCHMODE_DEFAULT, $rekey=false, $force_array=false, $group=false)
	Fetch and return all rows from the current row pointer position. More...
	rowCount ()
	Returns the actual row number that was last fetched (count from 0) More...
	numRows ()
	Returns the number of rows in a result object. More...
	nextResult ()
	Move the internal result pointer to the next available result. More...
	getColumnNames ($flip=false)
	Retrieve the names of columns returned by the DBMS in a query result or from the cache. More...
	_getColumnNames ()
	Retrieve the names of columns returned by the DBMS in a query result. More...
	numCols ()
	Count the number of columns returned by the DBMS in a query result. More...
	getResource ()
	return the resource associated with the result object More...
	bindColumn ($column, &$value, $type=null)
	Set bind variable to a column. More...
	_assignBindColumns ($row)
	Bind a variable to a value in the result row. More...
	free ()
	Free the internal resources associated with result. More...
	execute ($a_data=null)
Public Member Functions inherited from ilDBStatement
	fetchRow ($fetch_mode)

Additional Inherited Members
Data Fields inherited from MDB2_Result_Common
	$db
	$result
	$rownum = -1
	$types = array()
	$values = array()
	$offset
	$offset_count = 0
	$limit
	$column_names

Detailed Description

Definition at line 1284 of file mysql.php.

Member Function Documentation

numRows()

MDB2_BufferedResult_mysql::numRows

(

)

Returns the number of rows in a result object.

Returns

mixed MDB2 Error Object or the number of rows public

Implements ilDBStatement.

Definition at line 1339 of file mysql.php.

References $rows, and MDB2_ERROR_NEED_MORE_DATA.

    {
        $rows = @mysql_num_rows($this->result);
        if (is_null($rows)) {
            if ($this->result === false) {
                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
                    'resultset has already been freed', __FUNCTION__);
            } elseif (is_null($this->result)) {
                return 0;
            }
            return $this->db->raiseError(null, null, null,
                'Could not get row count', __FUNCTION__);
        }
        return $rows;
    }

seek()

MDB2_BufferedResult_mysql::seek

(

$rownum = 0

)

Seek to a specific row in a result set.

Parameters

int

$rownum

number of the row where the data can be found

Returns

mixed MDB2_OK on success, a MDB2 error on failure public

Definition at line 1296 of file mysql.php.

References MDB2_ERROR_INVALID, MDB2_ERROR_NEED_MORE_DATA, and MDB2_OK.

    {
        if ($this->rownum != ($rownum - 1) && !@mysql_data_seek($this->result, $rownum)) {
            if ($this->result === false) {
                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
                    'resultset has already been freed', __FUNCTION__);
            } elseif (is_null($this->result)) {
                return MDB2_OK;
            }
            return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
                'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
        }
        $this->rownum = $rownum - 1;
        return MDB2_OK;
    }

valid()

MDB2_BufferedResult_mysql::valid

(

)

Check if the end of the result set has been reached.

Returns

mixed true or false on sucess, a MDB2 error on failure public

Definition at line 1321 of file mysql.php.

References PEAR\isError().

    {
        $numrows = $this->numRows();
        if (PEAR::isError($numrows)) {
            return $numrows;
        }
        return $this->rownum < ($numrows - 1);
    }

Here is the call graph for this function:

---

The documentation for this class was generated from the following file:

• Services/Database/lib/PEAR/MDB2/Driver/mysql.php