MDB2_Result_pgsql Class Reference

Inheritance diagram for MDB2_Result_pgsql:

Collaboration diagram for MDB2_Result_pgsql:

Public Member Functions
&	fetchRow ($fetchmode=MDB2_FETCHMODE_DEFAULT, $rownum=null)
	Fetch a row and insert the data into an existing array. More...
	_getColumnNames ()
	Retrieve the names of columns returned by the DBMS in a query result. More...
	numCols ()
	Count the number of columns returned by the DBMS in a query result. More...
	nextResult ()
	Move the internal result pointer to the next available result. More...
	free ()
	Free the internal resources associated with result. More...
Public Member Functions inherited from MDB2_Result_Common
	__construct ($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 1052 of file pgsql.php.

Member Function Documentation

_getColumnNames()

MDB2_Result_pgsql::_getColumnNames

(

)

Retrieve the names of columns returned by the DBMS in a query result.

Returns

mixed Array variable that holds the names of columns as keys or an MDB2 error on failure. Some DBMS may not return any columns when the result set does not contain any rows. private

Definition at line 1137 of file pgsql.php.

References $column, $columns, array, PEAR\isError(), and MDB2_PORTABILITY_FIX_CASE.

    {
        $columns = array();
        $numcols = $this->numCols();
        if (PEAR::isError($numcols)) {
            return $numcols;
        }
        for ($column = 0; $column < $numcols; $column++) {
            $column_name = @pg_field_name($this->result, $column);
            $columns[$column_name] = $column;
        }
        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
            $columns = array_change_key_case($columns, $this->db->options['field_case']);
        }
        return $columns;
    }

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fetchRow()

& MDB2_Result_pgsql::fetchRow	(		$fetchmode = MDB2_FETCHMODE_DEFAULT,
			$rownum = null
	)

Fetch a row and insert the data into an existing array.

Parameters

int	$fetchmode	how the array data should be indexed
int	$rownum	number of the row where the data can be found

Returns

int data array on success, a MDB2 error on failure public

Definition at line 1065 of file pgsql.php.

References MDB2_Driver_Common\$fetchmode, $row, PEAR\isError(), MDB2_ERROR_NEED_MORE_DATA, MDB2_FETCHMODE_ASSOC, MDB2_FETCHMODE_DEFAULT, MDB2_FETCHMODE_OBJECT, MDB2_PORTABILITY_EMPTY_TO_NULL, MDB2_PORTABILITY_FIX_CASE, MDB2_PORTABILITY_RTRIM, and object.

    {
        if (!is_null($rownum)) {
            $seek = $this->seek($rownum);
            if (PEAR::isError($seek)) {
                return $seek;
            }
        }
        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
            $fetchmode = $this->db->fetchmode;
        }
        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
            $row = @pg_fetch_array($this->result, null, PGSQL_ASSOC);
            if (is_array($row)
                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
            ) {
                $row = array_change_key_case($row, $this->db->options['field_case']);
            }
        } else {
            $row = @pg_fetch_row($this->result);
        }
        if (!$row) {
            if ($this->result === false) {
                $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
                    'resultset has already been freed', __FUNCTION__);
                return $err;
            }
            $null = null;
            return $null;
        }
        $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
        $rtrim = false;
        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
            if (empty($this->types)) {
                $mode += MDB2_PORTABILITY_RTRIM;
            } else {
                $rtrim = true;
            }
        }
        if ($mode) {
            $this->db->_fixResultArrayValues($row, $mode);
        }
        if (!empty($this->types)) {
            $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
        }
        if (!empty($this->values)) {
            $this->_assignBindColumns($row);
        }
        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
            $object_class = $this->db->options['fetch_class'];
            if ($object_class == 'stdClass') {
                $row = (object) $row;
            } else {
                $row = new $object_class($row);
            }
        }
        ++$this->rownum;
        return $row;
    }

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free()

MDB2_Result_pgsql::free

(

)

Free the internal resources associated with result.

Returns

boolean true on success, false if result is invalid public

Definition at line 1211 of file pgsql.php.

References MDB2_OK.

    {
        if (is_resource($this->result) && $this->db->connection) {
            $free = @pg_free_result($this->result);
            if ($free === false) {
                return $this->db->raiseError(null, null, null,
                    'Could not free result', __FUNCTION__);
            }
        }
        $this->result = false;
        return MDB2_OK;
    }

nextResult()

MDB2_Result_pgsql::nextResult

(

)

Move the internal result pointer to the next available result.

Returns

true on success, false if there is no more result set or an error object on failure public

Definition at line 1189 of file pgsql.php.

References MDB2_Driver_Common\$connection, PEAR\isError(), and MDB2_OK.

    {
        $connection = $this->db->getConnection();
        if (PEAR::isError($connection)) {
            return $connection;
        }

        if (!($this->result = @pg_get_result($connection))) {
            return false;
        }
        return MDB2_OK;
    }

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numCols()

MDB2_Result_pgsql::numCols

(

)

Count the number of columns returned by the DBMS in a query result.

public

Returns

mixed integer value with the number of columns, a MDB2 error on failure

Definition at line 1164 of file pgsql.php.

References $cols, and MDB2_ERROR_NEED_MORE_DATA.

    {
        $cols = @pg_num_fields($this->result);
        if (is_null($cols)) {
            if ($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 count($this->types);
            }
            return $this->db->raiseError(null, null, null,
                'Could not get column count', __FUNCTION__);
        }
        return $cols;
    }

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

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