Patch applied. Thanks.
---------------------------------------------------------------------------
Heikki Linnakangas wrote:
> access/gin/README describes the Gin interface, but it hasn't been
> updated since the change to extractQuery interface to allow "no query
> can match" return value.
>
> Since that interface documentation has been copied to the manual,
> gin.sgml, section 52.2, which is up to date, how about we just remove it
> from the README?
>
> --
> Heikki Linnakangas
> EnterpriseDB http://www.enterprisedb.com
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
> choose an index scan if your joining column's datatypes do not
> match
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://www.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
Index: src/backend/access/gin/README
===================================================================
RCS file: /cvsroot/pgsql/src/backend/access/gin/README,v
retrieving revision 1.2
diff -c -c -r1.2 README
*** src/backend/access/gin/README 10 Sep 2006 00:29:34 -0000 1.2
--- src/backend/access/gin/README 14 Sep 2007 16:27:17 -0000
***************
*** 88,122 ****
* Gin doesn't support full scans of indices.
* Gin doesn't index NULL values.
- Gin Interface
- -------------
-
- Opclass interface pseudocode. An example for a Gin opclass can be found in
- ginarayproc.c.
-
- Datum* extractValue(Datum inputValue, uint32* nentries)
-
- Returns an array of Datum of entries of the value to be indexed. nentries
- should contain the number of returned entries.
-
- int compareEntry(Datum a, Datum b)
-
- Compares two entries (not the indexing values)
-
- Datum* extractQuery(Datum query, uint32* nentries, StrategyNumber n)
-
- Returns an array of Datum of entries of the query to be executed.
- n contains the strategy number of the operation.
-
- bool consistent(bool[] check, StrategyNumber n, Datum query)
-
- The size of the check array is the same as sizeof of the array returned by
- extractQuery. Each element of the check array is true if the indexed value
- has a corresponding entry in the query. i.e. if (check[i] == TRUE) then
- the i-th entry of the query is present in the indexed value. The Function
- should return true if the indexed value matches by StrategyNumber and
- the query.
-
Open Items
----------
--- 88,93 ----
