[hibernate-dev] Query Parser Redesign

[Gunnar Morling]

+1 for the new repo. Just forked it and am looking into the amazing
things you guys built recently :)

Can I push simple stuff to that repo right away (e.g. adding the
Eclipse plug-in to build.gradle)?

Cheers,

--Gunnar


2015-08-26 0:17 GMT+02:00 Steve Ebersole <steve at hibernate.org>:
> I also created Jira project -> https://hibernate.atlassian.net/projects/SQM
>
> On Tue, Aug 25, 2015 at 3:56 PM Steve Ebersole <steve at hibernate.org> wrote:
>
>> I am starting that work here ->
>> https://github.com/hibernate/hibernate-semantic-query
>>
>>
>> On Tue, Aug 25, 2015 at 2:21 PM andrea boriero <andrea at hibernate.org>
>> wrote:
>>
>>> no objections
>>>
>>> On 25 August 2015 at 20:12, Steve Ebersole <steve at hibernate.org> wrote:
>>>
>>>> Anyone want to propose an alternative approach to what I have working in
>>>> my Antlr 4 PoC?
>>>>
>>>> If not, I think we should move that work to a GitHub Hibernate org repo
>>>> and start tracking work and Jiras there.  Objections?
>>>>
>>>> Also its no longer *just* HQL, we also plan to support JPA criteria
>>>> queries here, interpreting them into semantic query models.  As such I
>>>> propose the top-level name of hibernate-query-parser, with 2 sub projects:
>>>> hibernate-sqm and hibernate-query-interpreter
>>>>
>>>>
>>>> On Tue, Aug 25, 2015 at 8:45 AM andrea boriero <dreborier at gmail.com>
>>>> wrote:
>>>>
>>>>> I see,
>>>>>
>>>>> Thanks
>>>>>
>>>>> On 25 August 2015 at 13:17, Steve Ebersole <steve at hibernate.org> wrote:
>>>>>
>>>>>> from A a where a.b in (from B b ..) and a.c in (from C c ...) ...
>>>>>>
>>>>>> But regardless, the children are not important for a stack, just the
>>>>>> parent.  As I said when we discussed on ORC, the children are just
>>>>>> maintained because I used them for tests.
>>>>>>
>>>>>> On Tue, Aug 25, 2015 at 6:53 AM andrea boriero <dreborier at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi Stevej
>>>>>>>
>>>>>>> I'm playing with you idea to remove the parent/child from the
>>>>>>> FromClause and introduce such a structure in the FromClauseProcessor.
>>>>>>>
>>>>>>> just a question, in the current implementation a fromClause can have
>>>>>>> more than one child fromClause , but I cannot figure out when this happen :(
>>>>>>>
>>>>>>> Thanks a lot
>>>>>>>
>>>>>>> On 25 August 2015 at 04:12, Steve Ebersole <steve at hibernate.org>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Andrea, this is in relation to something you asked me on IRC today.
>>>>>>>> Specifically in regards to FromClause and the fact that it maintains
>>>>>>>> pointers to parent/children.  As I said on IRC there is no intrinsic
>>>>>>>> need
>>>>>>>> (I do not foresee) for keeping this structure; I really only did that
>>>>>>>> because FromCauseProcessor needed a stack of FromClauses and the
>>>>>>>> FromClause
>>>>>>>> itself made a simple place to do that.
>>>>>>>>
>>>>>>>> However, in later work I ran into minor problems because of that
>>>>>>>> decision.
>>>>>>>> I need to make a copy of an entire SelectStatement tree.  But
>>>>>>>> because the
>>>>>>>> FromClause is held twice (for non-root FromClauses) in the tree, it
>>>>>>>> makes
>>>>>>>> it more complicated to do a "simple copy" than it need be.
>>>>>>>> Basically I
>>>>>>>> need to maintain a "Map<FromClause,FromClause> copy Map" :(
>>>>>>>>
>>>>>>>> Long story short, I think I might revisit that decision and instead
>>>>>>>> write a
>>>>>>>> dedicated stack in FromClauseProcessor for this.  In the morning...
>>>>>>>> its too
>>>>>>>> late to start something that ambitious tonight.  I'll start that in
>>>>>>>> the
>>>>>>>> morning, unless someone wants to pick that up in the next few hours
>>>>>>>> before
>>>>>>>> I get back on line.
>>>>>>>>
>>>>>>> _______________________________________________
>>>>>>>> hibernate-dev mailing list
>>>>>>>> hibernate-dev at lists.jboss.org
>>>>>>>> https://lists.jboss.org/mailman/listinfo/hibernate-dev
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>
>>>
> _______________________________________________
> hibernate-dev mailing list
> hibernate-dev at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/hibernate-dev