Changes between Version 4 and Version 5 of FDORfc20

Timestamp:

May 1, 2008, 8:47:23 AM (16 years ago)

Author:

gregboone

Comment:

--

FDORfc20

@@ -29 +29 @@
 Finally to simplify capability handling as the FDO API evolves, we will evaluate the possibilities of introducing an API change that would see the FDO API use constants to identify capabilities supported by its providers. This will make it easier to add new capabilities without changing the API every time a need arises to add a new capability.
 
+
+== Scenarios ==
+
+Here are some areas where the current level of capabilities is insufficient.
+
+    * The ODBC provider can connect to different sources from Excel files to Access databases to various RDBMS’. However, the capabilities of each source are somewhat different.
+    * The Oracle provider can connect to different Oracle versions. With the introduction of Oracle XE there is the case of an Oracle datastore that does not support long transaction versioning or persistent locking.
+    * Some providers restrict the type of geometry in a geometry property to a specific type rather than category of types. SHP is a good example of this. The provider may advertise that the geometry can be linear, which implies polyline, multi-polyline, etc. However, when the user enters a multi-polyline geometry, an exception is thrown that it cannot be written. A more fine grained specification of allowed geometry types will avoid these situations.
+