Changes to GNOWSYS Core Semantic Engine:
Two new modules namely MetaType & MetaType Relations has been added.
Module Occurrance Type has been removed.
Following modules are renamed :
Old Name | New Name |
Association Type | Relation Type |
Association | Relation |
Facet Type | Attribute Type |
Facet | Attribute |
Changes in meta types are done so that old version and new version
could work simultaneously in ZOPE. The changes are as follows:
GNOWSYS 0.4 | GNOWSYS0.5 |
Object Type | GObject Type |
Object | GObject |
Association Type | GRelation Type |
Association | GRelation |
Facet Type | GAttribute Type |
Class Type | GClass Type |
Class | GClass |
Flow Type | GFlow Type |
Flow | GFlow |
FunctionType | GFunctionType |
Function | GFunction |
New modules MetaType and MetaType Relations have been added.
They help in organizing 'ObjectTypes', 'RelationTypes' and
'AttributeTypes' etc. Using the module 'MetaType Relation' we can
create relations between Categories, MetaType and Object
Type. Categories dont directly form relations with objects.
These notions will be explained in the GNOWSYS manual (yet to be
written!).
This version onwards only metadata will be stored in ZODB, while
the data part of MetaType, ObjectType and Obejct are stored in
the file system. This change will make GNOWSYS support very
large databases, since the static content is stored on the file
system. In our next release, we will port metadata also to the
filesystem using Linux 2.6 kernel with XFS as file system. This
version (called GNOWSYS-GnowFS) will be separately maintained for
keeping the application available for all operating systems.
Relation Types & Relation module has been improved to support
relations between Object Type to Object,Object to Object
Type. And additional support to add relational attributes like
symmetry, transitivety, and reflexivity are added. However the
semantic engine doesn't make use of this data as yet.
Occurrence Type and Occurrence have been removed, since the
implementation of Attribute Types and Attributes could take
care. Now www, file, ftp will be added as attributes to MetaType,
Object Type, Object. When exported to XTM (XML TopicMaps)
mapping of Attributes to Occurrence.
Apart from these, there are numerous other small changes and
bug fixes.