Resort tsvector's lexemes in tsvectorrecv instead of emmiting an error.

Basically, it's needed to support binary dump from 8.3 because ordering rule
was changed.

Per discussion with Bruce.

diff --git a/src/backend/utils/adt/tsvector.c b/src/backend/utils/adt/tsvector.c
index e7a20d5b70b67a738bad50a6f5e1516fca54a447..c9c432b9a98f49b174124d6b8fe54bd95e96c3dd 100644 (file)
--- a/src/backend/utils/adt/tsvector.c
+++ b/src/backend/utils/adt/tsvector.c
@@ -451,6 +451,7 @@ tsvectorrecv(PG_FUNCTION_ARGS)
                                                                 * WordEntries */
        Size            hdrlen;
        Size            len;                    /* allocated size of vec */
+       bool            needSort = false;
 
        nentries = pq_getmsgint(buf, sizeof(int32));
        if (nentries < 0 || nentries > (MaxAllocSize / sizeof(WordEntry)))
@@ -507,7 +508,7 @@ tsvectorrecv(PG_FUNCTION_ARGS)
                if (i > 0 && WordEntryCMP(&vec->entries[i],
                                                                  &vec->entries[i - 1],
                                                                  STRPTR(vec)) <= 0)
-                       elog(ERROR, "lexemes are misordered");
+                       needSort = true;
 
                /* Receive positions */
                if (npos > 0)
@@ -542,5 +543,9 @@ tsvectorrecv(PG_FUNCTION_ARGS)
 
        SET_VARSIZE(vec, hdrlen + datalen);
 
+       if (needSort)
+               qsort_arg((void *) ARRPTR(vec), vec->size, sizeof(WordEntry),   
+                                       compareentry, (void*)STRPTR(vec));
+
        PG_RETURN_TSVECTOR(vec);
 }