Re: exporting raw parser

On 5/26/2010 10:16 PM, Tatsuo Ishii wrote:
>> As was already discussed, I don't believe that premise.  None of the
>> applications you cite would be able to make use of the raw parser
>> output, because it doesn't contain the semantic information they need.
>> If what you actually meant was the analyzed parse tree, that *might*
>> serve the need depending on just what is wanted (in particular,
>> properties that could be affected by the expansion of views or
>> inlineable functions could still not be determined reliably).
>> But you can't have that without access to the current system catalog
>> contents.
> 
> No, what pgpoo-II needs is a raw parse tree. When it needs info in the
> system catalog, it sends SELECT to PostgreSQL. So that would be no
> problem.

But doesn't it need that parse tree BEFORE it makes the decision, which 
node to execute the query on?

The parser needs the system catalog in order to create a parse tree. 
Where would that stand-alone library version of the parser get the 
catalog information from? Don't you need to know which user defined 
function in the query is volatile?


Jan

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