MDB2_Driver_Function_Common Class Reference

Inheritance diagram for MDB2_Driver_Function_Common:

Collaboration diagram for MDB2_Driver_Function_Common:

Public Member Functions
&	executeStoredProc ($name, $params=null, $types=null, $result_class=true, $result_wrap_class=false)
	Execute a stored procedure and return any results.
	functionTable ()
	return string for internal table used when calling only a function
	now ($type= 'timestamp')
	Return string to call a variable with the current timestamp inside an SQL statement There are three special variables for current date and time:
	substring ($value, $position=1, $length=null)
	return string to call a function to get a substring inside an SQL statement
	concat ($value1, $value2)
	Returns string to concatenate two or more string parameters.
	random ()
	return string to call a function to get random value inside an SQL statement
	lower ($expression)
	return string to call a function to lower the case of an expression
	upper ($expression)
	return string to call a function to upper the case of an expression
	guid ()
	Returns global unique identifier.
Public Member Functions inherited from MDB2_Module_Common
	__construct ($db_index)
	Constructor.
	MDB2_Module_Common ($db_index)
	PHP 4 Constructor.
&	getDBInstance ()
	Get the instance of MDB2 associated with the module instance.

Additional Inherited Members
Data Fields inherited from MDB2_Module_Common
	$db_index

Detailed Description

Definition at line 61 of file Common.php.

Member Function Documentation

MDB2_Driver_Function_Common::concat	(		$value1,
			$value2
	)

Returns string to concatenate two or more string parameters.

Parameters

string	$value1
string	$value2
string	$values,...

Returns

string to concatenate two strings public

Reimplemented in MDB2_Driver_Function_mysqli, and MDB2_Driver_Function_mysql.

Definition at line 158 of file Common.php.

    {
        $args = func_get_args();
        return "(".implode(' || ', $args).")";
    }

& MDB2_Driver_Function_Common::executeStoredProc	(		$name,
			$params = null,
			$types = null,
			$result_class = true,
			$result_wrap_class = false
	)

Execute a stored procedure and return any results.

Parameters

string	$name	string that identifies the function to execute
mixed	$params	array that contains the paramaters to pass the stored proc
mixed	$types	array that contains the types of the columns in the result set
mixed	$result_class	string which specifies which result class to use
mixed	$result_wrap_class	string which specifies which class to wrap results in

Returns

mixed a result handle or MDB2_OK on success, a MDB2 error on failure public

Reimplemented in MDB2_Driver_Function_mysql, MDB2_Driver_Function_mysqli, MDB2_Driver_Function_oci8, and MDB2_Driver_Function_pgsql.

Definition at line 77 of file Common.php.

References MDB2_Module_Common\getDBInstance(), PEAR\isError(), and MDB2_ERROR_UNSUPPORTED.

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

        $error =& $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
            'method not implemented', __FUNCTION__);
        return $error;
    }

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MDB2_Driver_Function_Common::functionTable

(

)

return string for internal table used when calling only a function

Returns

string for internal table used when calling only a function public

Reimplemented in MDB2_Driver_Function_oci8.

Definition at line 98 of file Common.php.

    {
        return '';
    }

MDB2_Driver_Function_Common::guid

(

)

Returns global unique identifier.

Returns

string to get global unique identifier public

Reimplemented in MDB2_Driver_Function_oci8, MDB2_Driver_Function_mysqli, and MDB2_Driver_Function_mysql.

Definition at line 217 of file Common.php.

References MDB2_Module_Common\getDBInstance(), PEAR\isError(), and MDB2_ERROR_UNSUPPORTED.

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

        $error =& $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
            'method not implemented', __FUNCTION__);
        return $error;
    }

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MDB2_Driver_Function_Common::lower

(

$expression

)

return string to call a function to lower the case of an expression

Parameters

string

$expression

Returns

return string to lower case of an expression public

Definition at line 188 of file Common.php.

    {
        return "LOWER($expression)";
    }

MDB2_Driver_Function_Common::now

(

$type = 'timestamp'

)

Return string to call a variable with the current timestamp inside an SQL statement There are three special variables for current date and time:

• CURRENT_TIMESTAMP (date and time, TIMESTAMP type)
• CURRENT_DATE (date, DATE type)
• CURRENT_TIME (time, TIME type)

Returns

string to call a variable with the current timestamp public

Reimplemented in MDB2_Driver_Function_oci8.

Definition at line 116 of file Common.php.

    {
        switch ($type) {
        case 'time':
            return 'CURRENT_TIME';
        case 'date':
            return 'CURRENT_DATE';
        case 'timestamp':
        default:
            return 'CURRENT_TIMESTAMP';
        }
    }

MDB2_Driver_Function_Common::random

(

)

return string to call a function to get random value inside an SQL statement

Returns

return string to generate float between 0 and 1 public

Reimplemented in MDB2_Driver_Function_oci8, and MDB2_Driver_Function_pgsql.

Definition at line 173 of file Common.php.

    {
        return 'RAND()';
    }

MDB2_Driver_Function_Common::substring	(		$value,
			$position = 1,
			$length = null
	)

return string to call a function to get a substring inside an SQL statement

Returns

string to call a function to get a substring public

Reimplemented in MDB2_Driver_Function_oci8.

Definition at line 138 of file Common.php.

    {
        if (!is_null($length)) {
            return "SUBSTRING($value FROM $position FOR $length)";
        }
        return "SUBSTRING($value FROM $position)";
    }

MDB2_Driver_Function_Common::upper

(

$expression

)

return string to call a function to upper the case of an expression

Parameters

string

$expression

Returns

return string to upper case of an expression public

Definition at line 203 of file Common.php.

    {
        return "UPPER($expression)";
    }

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

• Services/PEAR/lib/MDB2/Driver/Function/Common.php