Steps to produce bug:
1. Enable Lightweight Edges
2. CREATE CLASS SimpleV EXTENDS V
3. CREATE CLASS SimpleE EXTENDS E
4. INSERT INTO SimpleV CONTENT {"name":"A"} // this is #25:0
5. INSERT INTO SimpleV CONTENT {"name":"B"} // this is #25:1
6. CREATE EDGE SimpleE FROM #25:0 TO #25:1
7. SELECT FROM SimpleE // empty result, provides that Lightweight Edge
was used
8. DELETE VERTEX #25:1
9. SELECT FROM SimpleV // returns #25:0, with OUT still showing link to
#25:1
On Tuesday, November 14, 2017 at 2:18:36 AM UTC-6, Luigi Dell'Aquila wrote:
>
> Hi Eric,
>
> The main problem with lightweight edges is that they do not have an
> identity, so they don't "physically" exist.
> The big disadvantages are that:
> - you cannot point to a single lightweight edge by RID
> - you cannot count them, eg. SELECT FROM E will return a wrong result
>
> The DELETE VERTEX is supposed to work fine though, if you have a test case
> that proves the problem please submit it, I'll check it asap
>
> Thanks
>
> Luigi
>
>
> 2017-11-13 19:21 GMT+01:00 Eric24 <[email protected] <javascript:>>:
>
>> It has been mentioned many times that using lightweight edges is "more
>> difficult" with SQL. Can anyone provide specific examples of when this is
>> true (i.e. what are the SQL issues created by using them)?
>>
>> I ask because just about everything I've tried with lightweight edges
>> works the same way with regular edges (even SELECTs that return linked
>> records using both kinds of edges in a single query).
>>
>> The one thing I've found that doesn't work with lightweight edges (which
>> is a bit of a surprise to me) is that the links are not "cleaned up" when
>> doing a DELETE VERTEX operation (i.e. "broken" links are left in the
>> remaining vertex records). Is this an expected behavior? If so, it should
>> probably be listed in the documentation as one of the cons to lightweight
>> edges. If not, what is the appropriate way to delete a vertex record while
>> ensuring that links to the deleted record are removed from the remaining
>> records?
>>
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>
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