The next section will explore these facilities in the context of the the -particular programming idioms that we wish to generalize.
Related Links
This design document should be read along with the design documents for the new groups system, subsites and the permissions system
The motivation for most of the facilities in the OpenACS 4 Object Model can be +particular programming idioms that we wish to generalize.
Related Links
This design document should be read along with the design documents for the new groups system, subsites and the permissions system
The motivation for most of the facilities in the OpenACS 4 Object Model can be understood in the context of the 3.x code base and the kinds of programming idioms that evolved there. These are listed and discussed below.
Object identification is a central mechanism in OpenACS 4. Every application object in OpenACS 4 has a unique ID which is mapped to a row in a central table @@ -102,7 +102,7 @@ permission to perform action Y on object Z.
The context system forms the basis for the rest of the OpenACS access control system, which is described in in two separate documents: one for the permissions system and another for the party groups system. The context system -is also used to implement subsites.
As mentioned above, many OpenACS modules provide extensible data models, and +is also used to implement subsites.
As mentioned above, many OpenACS modules provide extensible data models, and
need to use application specific mechanisms to keep track of user defined
attributes and to map application data to these attributes. In the past,
modules either used user/groups or their own ad hoc data model to provide
@@ -445,7 +445,7 @@
the knowledge level data model to create, manage, query and manipulate
objects in a uniform manner. The acs_rels table has an analogous
role in storing information on relations.
These are all the tables that we'll discuss in this document. The rest -of the Kernel data model is described in the documents for subsites, the permissions system and for the groups system.
Some examples of how these tables are used in the system can be found in +of the Kernel data model is described in the documents for subsites, the permissions system and for the groups system.
Some examples of how these tables are used in the system can be found in the discussion of the API, which comes next.