Add a PQfireResultCreateEvents function to allow applications to mimic the

sequence of operations that libpq goes through while creating a PGresult.
Also, remove ill-considered "const" decoration on parameters passed to
event procedures.

1 files changed, 33 insertions, 1 deletions

diff --git a/src/interfaces/libpq/libpq-events.c b/src/interfaces/libpq/libpq-events.c
index 9f46336a58b..8ce3f3e81c5 100644
--- a/src/interfaces/libpq/libpq-events.c
+++ b/src/interfaces/libpq/libpq-events.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/interfaces/libpq/libpq-events.c,v 1.2 2008/09/19 16:40:40 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/interfaces/libpq/libpq-events.c,v 1.3 2008/09/19 20:06:13 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -175,3 +175,35 @@ PQresultInstanceData(const PGresult *result, PGEventProc proc)
 
 	return NULL;
 }
+
+/*
+ * Fire RESULTCREATE events for an application-created PGresult.
+ *
+ * The conn argument can be NULL if event procedures won't use it.
+ */
+int
+PQfireResultCreateEvents(PGconn *conn, PGresult *res)
+{
+	int i;
+
+	if (!res)
+		return FALSE;
+
+	for (i = 0; i < res->nEvents; i++)
+	{
+		if (!res->events[i].resultInitialized)
+		{
+			PGEventResultCreate evt;
+
+			evt.conn = conn;
+			evt.result = res;
+			if (!res->events[i].proc(PGEVT_RESULTCREATE, &evt,
+									 res->events[i].passThrough))
+				return FALSE;
+
+			res->events[i].resultInitialized = TRUE;
+		}
+	}
+
+	return TRUE;
+}