Added int2vector compatibility patch by Teodor.

See  PGPRO-1262.

Author: vbwagner

contrib/fulleq/fulleq.c

@@ -42,16 +42,37 @@ fullhash_##type(PG_FUNCTION_ARGS) {						\
 	) );												\
 }
 
+static Datum
+hashint2vector(PG_FUNCTION_ARGS)
+{
+	int2vector *key = (int2vector *) PG_GETARG_POINTER(0);
+
+	return hash_any((unsigned char *) key->values, key->dim1 * sizeof(int16));
+}
+
+/*
+ * We don't have a complete set of int2vector support routines,
+ * but we need int2vectoreq for catcache indexing.
+ */
+static Datum
+int2vectoreq(PG_FUNCTION_ARGS)
+{
+	int2vector *a = (int2vector *) PG_GETARG_POINTER(0);
+	int2vector *b = (int2vector *) PG_GETARG_POINTER(1);
+
+	if (a->dim1 != b->dim1)
+		PG_RETURN_BOOL(false);
+	PG_RETURN_BOOL(memcmp(a->values, b->values, a->dim1 * sizeof(int16)) == 0);
+}
+
+
 
 FULLEQ_FUNC( bool        , booleq         , hashchar       );
 FULLEQ_FUNC( bytea       , byteaeq        , hashvarlena    );
 FULLEQ_FUNC( char        , chareq         , hashchar       );
 FULLEQ_FUNC( name        , nameeq         , hashname       );
 FULLEQ_FUNC( int8        , int8eq         , hashint8       );
 FULLEQ_FUNC( int2        , int2eq         , hashint2       );
-/* FULLEQ_FUNC( int2vector  , int2vectoreq   , hashint2vector );v10 drop
- * support for int2vector equality and hash operator in commit
- * 5c80642aa8de8393b08cd3cbf612b325cedd98dc */
 FULLEQ_FUNC( int4        , int4eq         , hashint4       );
 FULLEQ_FUNC( text        , texteq         , hashtext       );
 FULLEQ_FUNC( oid         , oideq          , hashoid        );
@@ -72,3 +93,10 @@ FULLEQ_FUNC( timestamp   , timestamp_eq   , hashfloat8     );
 FULLEQ_FUNC( timestamptz , timestamp_eq   , hashfloat8     );
 FULLEQ_FUNC( interval    , interval_eq    , interval_hash  );
 FULLEQ_FUNC( timetz      , timetz_eq      , timetz_hash    );
+
+/*
+ * v10 drop * support for int2vector equality and hash operator in commit
+ * 5c80642aa8de8393b08cd3cbf612b325cedd98dc, but for compatibility
+ * we still add this operators
+ */
+FULLEQ_FUNC( int2vector  , int2vectoreq   , hashint2vector );