DefsRegistry Class Reference

#include "common/query/defs-registry.hpp"

Description

Helper for organising preconfigured default objects. Maintains a collection of objects known or encountered as "default" for a given type. This collection is ordered by "degree of constriction", which is implemented by counting the number of predicates in the query used to define or identify each object. Accessing an object identified by a query causes the query to be resolved (executed in prolog), which may result in some additional properties of the object being bound or specified.

Todo:

as of 3/2008 the real query implementation is missing, and the exact behaviour has to be defined.

Definition at line 195 of file defs-registry.hpp.

Public Member Functions
template<class TAR >
Iter< TAR >	candidates (Query< TAR > const &query)
	find a sequence of "default" objects possibly matching the query. More...
template<class TAR >
string	dump ()
	helper for diagnostics. More...
template<class TAR >
bool	forget (P< TAR > const &obj)
	if this object is registered as "default" in some way, drop the registration. More...
template<class TAR >
bool	put (P< TAR > const &obj, Query< TAR > const &query)
	register the object as being "default" when searching something similar as designated by the given query. More...

Classes
class	Iter
	used for enumerating solutions More...

Private Attributes
Table	table_

Additional Inherited Members
Private Member Functions inherited from NonCopyable
	NonCopyable (NonCopyable const &)=delete
NonCopyable &	operator= (NonCopyable const &)=delete

Member Function Documentation

candidates()

Iter<TAR> candidates ( Query< TAR > const &  query )

inline

find a sequence of "default" objects possibly matching the query.

If there was a registration for some object of the given kind with the same query, this one will be first in the sequence. Besides, the sequence will yield all still existing registered "default" objects of this kind, ordered ascending by "degree of constriction", i.e. starting with the object registered together with the shortest query.

Returns

a forward input iterator yielding this sequence

Note

none of the queries will be evaluated (we're just counting predicates)

Definition at line 259 of file defs-registry.hpp.

References steam::mobject::session::query::anonymous_namespace{fake-configrules.cpp}::entry().

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put()

bool put ( P< TAR > const &  obj, Query< TAR > const &  query  )

inline

register the object as being "default" when searching something similar as designated by the given query.

Only a weak ref is stored.

Parameters

obj	to be recorded as "default". Only a weak pointer will be stored

Return values

true	if object has actually been stored
false	if another object is registered for exactly the same query Nothing is changed in this case

Definition at line 286 of file defs-registry.hpp.

References steam::mobject::session::query::anonymous_namespace{fake-configrules.cpp}::entry().

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forget()

bool forget ( P< TAR > const &  obj )

inline

if this object is registered as "default" in some way, drop the registration.

Returns

false if the object wasn't registered at all.

Definition at line 316 of file defs-registry.hpp.

dump()

string dump ( )

inline

helper for diagnostics.

Note

to use it, your objects need an operator string()

Definition at line 331 of file defs-registry.hpp.

References steam::mobject::session::query::anonymous_namespace{fake-configrules.cpp}::entry().

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Inheritance diagram for DefsRegistry:

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

• defs-registry.hpp