Re: [Tmapi-discuss] Proposal: clear method for TopicMap

[Lars H. <he...@se...>]

Hi Uta,

[...]
>> say: You may do something like
>>
>>       conn.execute("DELETE * FROM topics WHERE tm_id = mytmid;");
>>
>> You don't have to iterate through the topics / assocs via the API.

> My problem with this is: of course, MY engine may do this. But I want to
> be sure that every other engine I may use, has implemented it this way
> as well ...

If an engine implementation iterates through the topics / assocs, it
would do nothing wrong. It may be ineffective but the result would be
the same: The topic map is removed from the TopicMapSystem.

The following must hold true for a TMAPI implementation:

    final Locator loc = tmSys.createLocator("http://example.org/map");
    final TopicMap tm = tmSys.createTopicMap(loc);
    assertNotNull(tm);
    assertEquals(tm, tmSys.getTopicMap(loc));
    tm.remove();
    assertNull(tmSys.getTopicMap(loc));

How it's implemented is completely unimportant and outside the scope
of TMAPI.

And I think it should be possible to create a topic map under the same
storage address of the removed topic map (see Sven's objection that
this might not be allowed).

Best regards,
Lars
-- 
Semagia 
<http://www.semagia.com>

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