Re: [GUSDEV] About Extending the Schema

[Michael S. <m...@sa...>]

Comments inline...  read all the way to the bottom for my thoughts on 
the original issue.

Angel Pizarro wrote:
> 1) I'll update the wiki for to delete the old information.
> 
> 2) There is no mention of adding the new table definitions to the 
> gus_schema.xml file, which should be _the_ canonical version of the 
> schema from which perl, ddl and java code should be generated from. This 
> guide was probably written while the DBAdmin project was not stable.
> 

No, the guide was written after DBAdmin stabilized, but the thought was 
that end users (who the guide was written for) weren't likely to be 
modifying this file (more likely, they'd directly add their tables to 
the DB and want objects generated).  The XML file is quite large, with 
many references and dependencies, and was never really intended to be 
edited by hand, another reason there is no documentation for doing so (I 
never really did this either beyond simply precision changes).

> We have to make a decision as a community whether we want to continue 
> GUS as either a database driven or spec file driven documentation and 
> development. Currently it is both, depending on the task.

I disagree with this.  I maintain that as of 3.5, GUS is spec file 
driven.  Either way, that'd be my vote too.

(More below)

  Pretty
> confusing. My vote is for spec-file driven.
> 
> -angel
> 
> 
> Steve Fischer wrote:
> 
>> jian-
>>
>> gus_schema.xml is the right file to touch.
>>
>> we have definitely extended the schema here recently.  hopefully 
>> someone at cbil who has done so will answer this.  if not, please 
>> write back, and i'll look into it.
>>

I *think* you may have to add the new schema to the gus_config file. 
New objects don't need to be in XML, but they do need to be in the 
metadata tables (databaseinfo and tableinfo) and I think in the config 
file as well.  The system doesn't really support adding new schemas in a 
good way... you may also have to add the schemas to the build.xml file ( 
there's an open issue for resolving this).

--Mike

>> steve
>>
>> Jian Lu wrote:
>>
>>> I was using
>>> $touch $PROJECT_HOME/GUS/Schema/gus_schema.xml
>>>
>>> from 
>>> http://www.gusdb.org/documentation/3.5/developers/html/ch02.html#id856722 
>>>
>>>
>>> I could try what you mentioned here. Thanks.
>>>
>>> Angel Pizarro wrote:
>>>
>>>>
>>>> Did you "touch" the schema VERSION file prior to building? From the 
>>>> wiki:
>>>>
>>>> http://www.gusdb.org/wiki/index.php/Installing%20GUS
>>>>
>>>>
>>>>        Regenerating the GUS Perl and Java Objects
>>>>
>>>> touch $PROJECT_HOME/GUS/Model/schema/VERSION
>>>> build GUS install -append
>>>>
>>>>
>>>> Jian Lu wrote:
>>>>
>>>>> Hi GUS,
>>>>>
>>>>> I created a new schema name called APP with some new tables. I 
>>>>> registered APP to Core.DatabaseInfo and all new tables to 
>>>>> Core.TableInfo. When I rebuilt GUS, it seems not recognizing the 
>>>>> new schema APP.
>>>>>
>>>>> When talking about extending GUS schema like adding new tables, 
>>>>> does it mean all new tables have to fall into existing GUS schema 
>>>>> such as DoTS? What should I do in order to support my own schema?
>>>>>
>>>>> Thanks.
>>>>>
>>>>> JL
>>>>>
>>>>>
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> 
> 
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