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Update 06-40-0004 -- Add Bookmark support!

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This commit is contained in:
Byron Nikolaidis
1999-01-08 18:24:45 +00:00
parent 97b88f1c15
commit 0b644ad332
9 changed files with 187 additions and 61 deletions
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29
src/interfaces/odbc/statement.c
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@@ -185,6 +185,7 @@ InitializeStatementOptions(StatementOptions *opt)
opt->cursor_type = SQL_CURSOR_FORWARD_ONLY;
opt->bind_size = 0; /* default is to bind by column */
opt->retrieve_data = SQL_RD_ON;
opt->use_bookmarks = SQL_UB_OFF;
}
StatementClass *
@@ -213,6 +214,9 @@ StatementClass *rv;
rv->bindings = NULL;
rv->bindings_allocated = 0;
rv->bookmark.buffer = NULL;
rv->bookmark.used = NULL;
rv->parameters_allocated = 0;
rv->parameters = 0;
@@ -496,6 +500,9 @@ Int2 lf;
self->bindings[lf].returntype = SQL_C_CHAR;
}
self->bookmark.buffer = NULL;
self->bookmark.used = NULL;
return 1;
}
@@ -566,6 +573,15 @@ char rv;
return rv;
}
/* Currently, the driver offers very simple bookmark support -- it is
just the current row number. But it could be more sophisticated
someday, such as mapping a key to a 32 bit value
*/
unsigned long
SC_get_bookmark(StatementClass *self)
{
return (self->currTuple + 1);
}
RETCODE
SC_fetch(StatementClass *self)
@@ -624,6 +640,19 @@ ColumnInfoClass *ci;
result = SQL_SUCCESS;
self->last_fetch_count = 1;
/* If the bookmark column was bound then return a bookmark.
Since this is used with SQLExtendedFetch, and the rowset size
may be greater than 1, and an application can use row or column wise
binding, use the code in copy_and_convert_field() to handle that.
*/
if (self->bookmark.buffer) {
char buf[32];
sprintf(buf, "%ld", SC_get_bookmark(self));
result = copy_and_convert_field(self, 0, buf,
SQL_C_ULONG, self->bookmark.buffer, 0, self->bookmark.used);
}
for (lf=0; lf < num_cols; lf++) {
mylog("fetch: cols=%d, lf=%d, self = %u, self->bindings = %u, buffer[] = %u\n", num_cols, lf, self, self->bindings, self->bindings[lf].buffer);