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 ----