11.3.176 query_class_hook/5   hook

Synopsis

:- multifile user:query_class_hook/5.

user:query_class_hook(+QueryClass, -Prompt, -InputMethod, -MapMethod, -FailureMode)

Provides the user with a method of overriding the call to 'SU_messages':query_class/5 in the preparation phase of query processing. This way the default query class characteristics can be changed.

Arguments

QueryClass

term

Determines the allowed values for the atom Answer.

Prompt

atom

The prompt to display at the terminal.

InputMethod

term

The input method to use.

MapMethod

term

The map method to use.

FailureMode

term

The failure mode to use.

Exceptions

All error handling is done by the predicates extended by this hook.

See Also

Query Processing.