This module implements the OMG CosNotifyFilter::MappingFilter interface.
The main purpose of this module is to match events against associated
constraints and return the value for the first constraint that returns
true for the given event. If all constraints return false the default value
will be returned.
To get access to the record definitions for the structures use:
-include_lib("cosNotification/include/*.hrl").
_get_constraint_grammar(MappingFilter) -> Grammar
Types
MappingFilter = #objref
Grammar = string()
This operation returns which type of Grammar the MappingFilter uses.
Currently, only "EXTENDED_TCL" is supported.
_get_value_type(MappingFilter) -> CORBA::TypeCode
Types
MappingFilter = #objref
This readonly attribute maintains the CORBA::TypeCode of the default value
associated with the target object.
_get_default_value(MappingFilter) -> #any
Types
MappingFilter = #objref
This readonly attribute maintains the #any{} default value associated with
the target object.
add_mapping_constraints(MappingFilter, MappingConstraintPairSeq) -> Reply
Types
MappingFilter = #objref
MappingConstraintPairSeq = [MappingConstraintPair]
MappingConstraintPair = #'CosNotifyFilter_MappingConstraintPair'{constraint_expression, result_to_set}
constraint_expression = #'CosNotifyFilter_ConstraintExp'{event_types, constraint_expr}
event_types = #'CosNotification_EventTypeSeq'{}
constraint_expr = string()
result_to_set = #any
Reply = MappingConstraintInfoSeq | {'EXCEPTION', #'CosNotifyFilter_InvalidConstraint'{constr}} | {'EXCEPTION', #'CosNotifyFilter_InvalidValue'{constr, value}}
constr = ConstraintExp
ConstraintExp = #'CosNotifyFilter_ConstraintExp'{event_types, constraint_expr}
event_types = #'CosNotification_EventTypeSeq'{}
constraint_expr = string()
MappingConstraintInfoSeq = [MappingConstraintInfo]
MappingConstraintInfo = #'CosNotifyFilter_MappingConstraintInfo'{constraint_expression, constraint_id, value}
constraint_expression = ConstraintExp
constraint_id = long()
value = #any
This operation add new mapping constraints, which will be used when trying to override
Quality of Service settings defined in the given event. If a constraint return true the
associated value will be returned, otherwise the default value.
modify_constraints(MappingFilter, ConstraintIDSeq, MappingConstraintInfoSeq) -> Reply
Types
MappingFilter = #objref
ConstraintIDSeq = [ConstraintID]
ConstraintID = long()
MappingConstraintInfoSeq = [MappingConstraintInfo]
MappingConstraintInfo = #'CosNotifyFilter_MappingConstraintInfo'{constraint_expression, constraint_id, value}
constraint_expression = ConstraintExp
constraint_id = long()
value = #any
ConstraintInfoSeq = [ConstraintInfo]
ConstraintInfo = #'CosNotifyFilter_ConstraintInfo'{constraint_expression, constraint_id}
constraint_expression = ConstraintExp
constraint_id = long()
Reply = ok | {'EXCEPTION', #'CosNotifyFilter_InvalidConstraint'{constr}} | {'EXCEPTION', #'CosNotifyFilter_ConstraintNotFound'{id}} | {'EXCEPTION', #'CosNotifyFilter_InvalidValue'{constr, value}}
constr = ConstraintExp
id = long()
value = #any
ConstraintExp = #'CosNotifyFilter_ConstraintExp'{event_types, constraint_expr}
event_types = #'CosNotification_EventTypeSeq'{}
constraint_expr = string()
The ConstraintIDSeq supplied should relate to constraints the caller wishes to
remove. If any of the supplied Id's are not found an exception will be raised. This
operation also accepts a sequence of MappingConstraintInfo which will be added.
If the target object cannot modify the constraints as requested an exception is raised
describing which constraint, and why, could not be updated.
get_mapping_constraints(MappingFilter, ConstraintIDSeq) -> Reply
Types
MappingFilter = #objref
ConstraintIDSeq = [ConstraintID]
ConstraintID = long()
Reply = MappingConstraintInfoSeq | {'EXCEPTION', #'CosNotifyFilter_ConstraintNotFound'{id}}
MappingConstraintInfoSeq = [MappingConstraintInfo]
MappingConstraintInfo = #'CosNotifyFilter_MappingConstraintInfo'{constraint_expression, constraint_id, value}
constraint_expression = ConstraintExp
ConstraintExp = #'CosNotifyFilter_ConstraintExp'{event_types, constraint_expr}
event_types = #'CosNotification_EventTypeSeq'{}
constraint_expr = string()
constraint_id = id = long()
value = #any
When adding a new constraint a unique Id is returned, which is accepted as input for this
operation. The associated constraint is returned, but if no such Id exists an exception is raised.
get_all_mapping_constraints(MappingFilter) -> MappingConstraintInfoSeq
Types
MappingFilter = #objref
MappingConstraintInfoSeq = [MappingConstraintInfo]
MappingConstraintInfo = #'CosNotifyFilter_MappingConstraintInfo'{constraint_expression, constraint_id, value}
constraint_expression = ConstraintExp
ConstraintExp = #'CosNotifyFilter_ConstraintExp'{event_types, constraint_expr}
event_types = #'CosNotification_EventTypeSeq'{}
constraint_expr = string()
constraint_id = long()
value = #any
This operation returns a sequence of all unique Id's associated with the target object.
If no constraint have been added the sequence will be empty.
remove_all_mapping_constraints(MappingFilter) -> ok
Types
MappingFilter = #objref
This operation removes all constraints associated with the target object.
destroy(MappingFilter) -> ok
Types
MappingFilter = #objref
This operation terminates the target object. Remember to remove
this Filter from the objects it have been associated with.
match(MappingFilter, Event) -> Reply
Types
MappingFilter = #objref
Event = #any
Reply = {boolean(), #any} | {'EXCEPTION', #'CosNotifyFilter_UnsupportedFilterableData'{}}
This operation evaluates Any events with the Filter's constraints,
and returns the value to use. The value is the default value if all constraints
returns false and the value associated with the first constraint returning true.
match_structured(MappingFilter, Event) -> Reply
Types
MappingFilter = #objref
Event = #'CosNotification_StructuredEvent'{}
Reply = {boolean(), #any} | {'EXCEPTION', #'CosNotifyFilter_UnsupportedFilterableData'{}}
Similar to match/2 but accepts a structured event as input.
