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Extended query protocol: parse, bind, execute, describe FE/BE messages.

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Only lightly tested as yet, since libpq doesn't know anything about 'em.
This commit is contained in:
Tom Lane
2003-05-05 00:44:56 +00:00
parent a59793f82c
commit 16503e6fa4
17 changed files with 1336 additions and 268 deletions
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24
src/backend/commands/portalcmds.c
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@ -14,7 +14,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/portalcmds.c,v 1.13 2003/05/02 20:54:33 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/portalcmds.c,v 1.14 2003/05/05 00:44:55 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -49,7 +49,7 @@ PerformCursorOpen(DeclareCursorStmt *stmt, CommandDest dest)
* Disallow empty-string cursor name (conflicts with protocol-level
* unnamed portal).
*/
if (strlen(stmt->portalname) == 0)
if (!stmt->portalname || stmt->portalname[0] == '\0')
elog(ERROR, "Invalid cursor name: must not be empty");
/*
@ -148,6 +148,13 @@ PerformPortalFetch(FetchStmt *stmt,
Portal portal;
long nprocessed;
/*
* Disallow empty-string cursor name (conflicts with protocol-level
* unnamed portal).
*/
if (!stmt->portalname || stmt->portalname[0] == '\0')
elog(ERROR, "Invalid cursor name: must not be empty");
/* get the portal from the portal name */
portal = GetPortalByName(stmt->portalname);
if (!PortalIsValid(portal))
@ -164,7 +171,9 @@ PerformPortalFetch(FetchStmt *stmt,
* Adjust dest if needed. MOVE wants dest = None.
*
* If fetching from a binary cursor and the requested destination is
* Remote, change it to RemoteInternal.
* Remote, change it to RemoteInternal. Note we do NOT change if the
* destination is RemoteExecute --- so the Execute message's format
* specification wins out over the cursor's type.
*/
if (stmt->ismove)
dest = None;
@ -189,10 +198,17 @@ PerformPortalFetch(FetchStmt *stmt,
* Close a cursor.
*/
void
PerformPortalClose(char *name)
PerformPortalClose(const char *name)
{
Portal portal;
/*
* Disallow empty-string cursor name (conflicts with protocol-level
* unnamed portal).
*/
if (!name || name[0] == '\0')
elog(ERROR, "Invalid cursor name: must not be empty");
/*
* get the portal from the portal name
*/