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Make cursor.scroll() raise an exception in asynchronous mode

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The exception is raised if an asynchronous query is in progress,
otherwise it will behave normally (since the data is already on the
client side).
This commit is contained in:
Jan Urbański 2010-03-31 01:52:10 +02:00 committed by Federico Di Gregorio
parent 727670c269
commit b99eac18f8
1 changed files with 5 additions and 4 deletions
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9
psycopg/cursor_type.c
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@ -1061,15 +1061,16 @@ psyco_curs_scroll(cursorObject *self, PyObject *args, PyObject *kwargs)
return NULL;
EXC_IF_CURS_CLOSED(self);
if (self->conn->async == 1) {
if (_psyco_curs_prefetch(self) < 0) return NULL;
}
EXC_IF_ASYNC_IN_PROGRESS(self, scroll)
/* if the cursor is not named we have the full result set and we can do
our own calculations to scroll; else we just delegate the scrolling
to the MOVE SQL statement */
if (self->name == NULL) {
/* the prefetch will be a noop for sync executions, because they
always set self->pgres and never touch self->needsfetch, but for
async queries we need to parse the result and set self->rowcount */
if (_psyco_curs_prefetch(self) < 0) return NULL;
if (strcmp(mode, "relative") == 0) {
newpos = self->row + value;
} else if (strcmp( mode, "absolute") == 0) {