Update for delete_all_rows() which will be used for TRUNCATE and DELETE support.

mysql-test/t/archive.test

@@ -1332,6 +1332,19 @@ INSERT DELAYED INTO t2 VALUES (4,011403,37,'intercepted','audiology','tinily',''
 # 
 # Cleanup, test is over
 #
-drop table t1, t2, t4;
 
 # End of 4.1 tests
+
+#
+# For bug #12836
+# Delete was allowing all rows to be removed
+DELETE FROM t2;
+SELECT * FROM t2;
+INSERT INTO t2 VALUES (2,011401,37,'breaking','dreaded','Steinberg','W');
+INSERT INTO t2 VALUES (3,011402,37,'Romans','scholastics','jarring','');
+INSERT INTO t2 VALUES (4,011403,37,'intercepted','audiology','tinily','');
+SELECT * FROM t2;
+TRUNCATE TABLE t2;
+SELECT * FROM t2;
+
+drop table t1, t2, t4;

sql/examples/ha_archive.cc

@@ -1028,4 +1028,15 @@ int ha_archive::end_bulk_insert()
   share->dirty= TRUE;
   DBUG_RETURN(0);
 }
+
+/*
+  We cancel a truncate command. The only way to delete an archive table is to drop it.
+  This is done for security reasons. In a later version we will enable this by 
+  allowing the user to select a different row format.
+*/
+int ha_archive::delete_all_rows()
+{
+  DBUG_ENTER("ha_archive::delete_all_rows");
+  DBUG_RETURN(0);
+}
 #endif /* HAVE_ARCHIVE_DB */

sql/examples/ha_archive.h

@@ -78,6 +78,7 @@ class ha_archive: public handler
   int close(void);
   int write_row(byte * buf);
   int real_write_row(byte *buf, gzFile writer);
+  int delete_row(const byte * buf);
   int rnd_init(bool scan=1);
   int rnd_next(byte *buf);
   int rnd_pos(byte * buf, byte *pos);

sql/handler.h

@@ -824,6 +824,8 @@ extern ulong total_ha, total_ha_2pc;
 
 #define ha_supports_generate(T) (T != DB_TYPE_INNODB && \
                                  T != DB_TYPE_BERKELEY_DB && \
+                                 T != DB_TYPE_ARCHIVE_DB && \
+                                 T != DB_TYPE_FEDERATED_DB && \
                                  T != DB_TYPE_NDBCLUSTER)
 
 /* lookups */