search

tmlab / majortom

The MaJorToM ( Merging Topic Maps Engine ) project was founded to develop a lightweight, merging and flexible Topic Maps engine satisfying different business use cases. The engine provides a couple of new features above to other engines based on the Topic Maps API version 2.0.
1 stars 1 forks source link

topicMapSystem.getLocators() on existing database empty #51

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Have a database including some topic maps.
2. Initialize a new Factory/System on this database.
3. Call topicMapSystem.getLocators().

What is the expected output? What do you see instead?
A Set of Locators (the base iri of the topic maps in the database).
Instead: Empty Set.

Original issue reported on code.google.com by schulze....@googlemail.com on 14 Sep 2010 at 9:09

GoogleCodeExporter commented 9 years ago 
I don't know if the expected behaviour would be right in this context. 

The question is, if the user wants all topic maps stored in one database in the 
same topic map system?

Original comment by Sven.Kro...@googlemail.com on 15 Sep 2010 at 8:33

GoogleCodeExporter commented 9 years ago 
That's right.

My goal was to get all topic maps in this database. How should I do this 
instead (w/o getLocators())?

Original comment by schulze....@googlemail.com on 15 Sep 2010 at 8:47

GoogleCodeExporter commented 9 years ago 
Have a similar issue that might correlate with this one. 

Assume I know the locator of a Topic Map I previously imported/created in a 
MT-DB instance session. 

When restarting the client application a fresh MT-DB-TMS will be instantiated. 
But it will return null on TopicMapSystem.getTopicMap(knownLocator). I have to 
call createTopicMap(knownLocator) to load the persistent map back into the 
system.

I think "get" and "create" should do what I expect as API user. ;-)

Original comment by MarcelHoyer@gmail.com on 15 Sep 2010 at 12:36

GoogleCodeExporter commented 9 years ago 
Thats the same problem, results in the question, if the topic map system, 
should ask the database for all locators or not? If the system extract all 
locators, it would also be possible to use the getTopicMap method with the 
locator.

Original comment by Sven.Kro...@googlemail.com on 23 Sep 2010 at 7:01

GoogleCodeExporter commented 9 years ago 
+1 for asking the database for all locators.

Original comment by schulze....@googlemail.com on 23 Sep 2010 at 2:05

GoogleCodeExporter commented 9 years ago

Original comment by Sven.Kro...@googlemail.com on 1 Nov 2010 at 12:18

GoogleCodeExporter commented 9 years ago

Original comment by Sven.Kro...@googlemail.com on 1 Nov 2010 at 12:24