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- /*
- * Testing of new asynchronous portal interface.
- *
- * Do the following at the monitor:
- *
-
- create test1 (i = int4) \g
- create test1a (i = int4) \g
-
- define rule r1 is on append to test1 do
- [append test1a (i = new.i)
- notify test1a]
-
- \g
- * Then start up this process.
-
- append test1 (i = 10) \g
-
- * The value i=10 should be printed by this process.
- */
-
- #include "tmp/simplelists.h"
- #include "tmp/libpq.h"
-
- void main()
- {
- extern int PQAsyncNotifyWaiting;
- PQNotifyList *l;
- PortalBuffer *portalbuf;
- char *res;
- int ngroups,tupno, grpno, ntups, nflds;
- PQsetdb(getenv("USER"));
-
- PQexec("listen test1a");
-
- while(1) {
- sleep(1);
- if (PQAsyncNotifyWaiting) {
- PQexec(" ");
- l = PQnotifies();
- if (l != NULL) {
- printf("notification on relation %s\n",l->relname);
- res = PQexec("retrieve (test1a.i)");
- if (*res == 'E') {
- fprintf(stderr,"%s\nfailed",++res);
- goto exit_error;
- }
- if (*res != 'P') {
- fprintf(stderr,"%s\nno portal",++res);
- }
- /* get tuples in relation */
- portalbuf = PQparray(++res);
- ngroups = PQngroups(portalbuf);
- for (grpno = 0; grpno < ngroups; grpno++) {
- ntups = PQntuplesGroup(portalbuf, grpno);
- if ((nflds = PQnfieldsGroup(portalbuf, grpno)) != 1) {
- fprintf(stderr, "expected 1 attributes, got %d\n", nflds);
- goto exit_error;
- }
- for (tupno = 0; tupno < ntups; tupno++) {
- printf ("got i=%s\n",PQgetvalue(portalbuf,tupno,0));
- }
- }
- break;
- }
- }
- }
-
- PQfinish();
- exit(0);
- exit_error:
- PQfinish();
- exit(1);
-
- }
-