qubaid_list Class Reference

This class represents a restriction on the set of question_usage ids to include in a larger database query based on an explicit list of ids. More...

Inheritance diagram for qubaid_list:

Public Member Functions
	__construct (array $qubaids)
	Constructor.
	from_question_attempts ($alias)
	Get the SQL fragment to go in a FROM clause.
	from_where_params ()
	get_hash_code ()
	usage_id_in ()
	usage_id_in_params ()
	where ()

Protected Attributes
	$columntotest = null
	$params
array	$qubaids
	of ids.

Detailed Description

This class represents a restriction on the set of question_usage ids to include in a larger database query based on an explicit list of ids.

Copyright

2010 The Open University

License

http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Constructor & Destructor Documentation

__construct()

qubaid_list::__construct

(

array

$qubaids

)

Constructor.

Parameters

array

$qubaids

of question usage ids.

Member Function Documentation

from_question_attempts()

qubaid_list::from_question_attempts

(

$alias

)

Get the SQL fragment to go in a FROM clause.

The SQL that needs to go in the FROM clause when trying to select records from the 'question_attempts' table based on this qubaid_condition.

Parameters

string

$alias

Return values

string

SQL fragment.

Reimplemented from qubaid_condition.

from_where_params()

qubaid_list::from_where_params

(

)

Return values

array

the params needed by a query that uses from_question_attempts() and where().

Reimplemented from qubaid_condition.

get_hash_code()

qubaid_condition::get_hash_code ( )

inherited

Return values

string

40-character hash code that uniquely identifies the combination of properties and class name of this qubaid condition.

usage_id_in()

qubaid_list::usage_id_in

(

)

Return values

string

SQL that can use used in a WHERE qubaid IN (...) query. This method returns the "IN (...)" part.

Reimplemented from qubaid_condition.

usage_id_in_params()

qubaid_list::usage_id_in_params

(

)

Return values

array

the params needed by a query that uses usage_id_in().

Reimplemented from qubaid_condition.

where()

qubaid_list::where

(

)

Return values

string

the SQL that needs to go in the where clause.

Reimplemented from qubaid_condition.

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

• question/engine/datalib.php