* See the file LICENSE for details.
*
* $Log: yaz-z-server.cpp,v $
- * Revision 1.1 2000-09-08 10:23:42 adam
+ * Revision 1.2 2000-09-12 12:09:53 adam
+ * More work on high-level server.
+ *
+ * Revision 1.1 2000/09/08 10:23:42 adam
* Added skeleton of yaz-z-server.
*
*/
Yaz_Z_Server::Yaz_Z_Server(IYaz_PDU_Observable *the_PDU_Observable)
: Yaz_Z_Assoc(the_PDU_Observable)
{
- m_no = 0;
}
-void Yaz_Z_Server::recv_Z_PDU (Z_APDU *apdu)
+Z_Records *Yaz_Z_Server::pack_records (const char *resultSetName,
+ int start, int *num,
+ Z_RecordComposition *comp,
+ int *next, int *pres,
+ int *format)
+{
+#if 0
+ int recno, total_length = 0, toget = *num, dumped_records = 0;
+ Z_Records *records =
+ (Z_Records *) odr_malloc (odr_encode(), sizeof(*records));
+ Z_NamePlusRecordList *reclist =
+ (Z_NamePlusRecordList *) odr_malloc (odr_encode(), sizeof(*reclist));
+ Z_NamePlusRecord **list =
+ (Z_NamePlusRecord **) odr_malloc (odr_encode(), sizeof(*list) * toget);
+
+ records->which = Z_Records_DBOSD;
+ records->u.databaseOrSurDiagnostics = reclist;
+ reclist->num_records = 0;
+ reclist->records = list;
+ *pres = Z_PRES_SUCCESS;
+ *num = 0;
+ *next = 0;
+
+ yaz_log(LOG_LOG, "Request to pack %d+%d", start, toget);
+ yaz_log(LOG_DEBUG, "pms=%d, mrs=%d", m_preferredMessageSize,
+ m_maximumRecordSize);
+ for (recno = start; reclist->num_records < toget; recno++)
+ {
+ Z_NamePlusRecord *rec =
+ (Z_NamePlusRecord *) odr_malloc (odr_encode(), sizeof(*rec));
+ rec->databaseName = 0;
+ rec->which = Z_NamePlusRecord_databaseRecord;
+ rec->u.databaseRecord = 0;
+
+ Z_DefaultDiagFormat *diagnostics = (Z_DefaultDiagFormat *)
+ odr_malloc (odr_encode(), sizeof(*diagnostics));
+ diagnostics->diagnosticSetId = 0;
+ diagnostics->condition = 0;
+ diagnostics->which = Z_DefaultDiagFormat_v2Addinfo;
+
+ recv_Z_record (resultSetName, recno, format, comp, rec, diagnostics);
+
+ bend_fetch_rr freq;
+ Z_NamePlusRecord *thisrec;
+ int this_length = 0;
+ /*
+ * we get the number of bytes allocated on the stream before any
+ * allocation done by the backend - this should give us a reasonable
+ * idea of the total size of the data so far.
+ */
+ total_length = odr_total(a->encode) - dumped_records;
+ freq.errcode = 0;
+ freq.errstring = 0;
+ freq.basename = 0;
+ freq.len = 0;
+ freq.record = 0;
+ freq.last_in_set = 0;
+ freq.setname = setname;
+ freq.surrogate_flag = 0;
+ freq.number = recno;
+ freq.comp = comp;
+ freq.request_format = format;
+ freq.request_format_raw = oid;
+ freq.output_format = format;
+ freq.output_format_raw = 0;
+ freq.stream = a->encode;
+ freq.print = a->print;
+ freq.surrogate_flag = 0;
+ freq.referenceId = referenceId;
+ (*a->init->bend_fetch)(a->backend, &freq);
+ /* backend should be able to signal whether error is system-wide
+ or only pertaining to current record */
+ if (freq.errcode)
+ {
+ if (!freq.surrogate_flag)
+ {
+ *pres = Z_PRES_FAILURE;
+ return diagrec(a, freq.errcode, freq.errstring);
+ }
+ reclist->records[reclist->num_records] =
+ surrogatediagrec(a, freq.basename, freq.errcode,
+ freq.errstring);
+ reclist->num_records++;
+ *next = freq.last_in_set ? 0 : recno + 1;
+ continue;
+ }
+ if (freq.len >= 0)
+ this_length = freq.len;
+ else
+ this_length = odr_total(a->encode) - total_length;
+ yaz_log(LOG_DEBUG, " fetched record, len=%d, total=%d",
+ this_length, total_length);
+ if (this_length + total_length > a->preferredMessageSize)
+ {
+ /* record is small enough, really */
+ if (this_length <= a->preferredMessageSize)
+ {
+ yaz_log(LOG_DEBUG, " Dropped last normal-sized record");
+ *pres = Z_PRES_PARTIAL_2;
+ break;
+ }
+ /* record can only be fetched by itself */
+ if (this_length < a->maximumRecordSize)
+ {
+ yaz_log(LOG_DEBUG, " Record > prefmsgsz");
+ if (toget > 1)
+ {
+ yaz_log(LOG_DEBUG, " Dropped it");
+ reclist->records[reclist->num_records] =
+ surrogatediagrec(a, freq.basename, 16, 0);
+ reclist->num_records++;
+ *next = freq.last_in_set ? 0 : recno + 1;
+ dumped_records += this_length;
+ continue;
+ }
+ }
+ else /* too big entirely */
+ {
+ yaz_log(LOG_DEBUG, "Record > maxrcdsz");
+ reclist->records[reclist->num_records] =
+ surrogatediagrec(a, freq.basename, 17, 0);
+ reclist->num_records++;
+ *next = freq.last_in_set ? 0 : recno + 1;
+ dumped_records += this_length;
+ continue;
+ }
+ }
+
+ if (!(thisrec = (Z_NamePlusRecord *)
+ odr_malloc(a->encode, sizeof(*thisrec))))
+ return 0;
+ if (!(thisrec->databaseName = (char *)odr_malloc(a->encode,
+ strlen(freq.basename) + 1)))
+ return 0;
+ strcpy(thisrec->databaseName, freq.basename);
+ thisrec->which = Z_NamePlusRecord_databaseRecord;
+
+ if (freq.output_format_raw)
+ {
+ struct oident *ident = oid_getentbyoid(freq.output_format_raw);
+ freq.output_format = ident->value;
+ }
+ thisrec->u.databaseRecord = z_ext_record(a->encode, freq.output_format,
+ freq.record, freq.len);
+ if (!thisrec->u.databaseRecord)
+ return 0;
+ reclist->records[reclist->num_records] = thisrec;
+ reclist->num_records++;
+ *next = freq.last_in_set ? 0 : recno + 1;
+ }
+ *num = reclist->num_records;
+ return records;
+#endif
+ return 0;
+}
+
+void Yaz_Z_Server::piggyback (Z_SearchRequest *req,
+ Z_SearchResponse *res)
{
- logf (LOG_LOG, "recv_Z_PDU in Yaz_Z_Server");
+ bool_t *sr = (bool_t *)odr_malloc (odr_encode(), sizeof(*sr));
+ *sr = 1;
+
+ int *next = (int *)odr_malloc (odr_encode(), sizeof(*next));
+ *next = 0;
+
+ int *toget = (int *)odr_malloc (odr_encode(), sizeof(*toget));
+ *toget = 0;
+
+ int *presst = (int *)odr_malloc (odr_encode(), sizeof(*presst));
+ *presst = 0;
+
+ Z_RecordComposition comp, *compp = 0;
+ int hits = *res->resultCount;
+
+ int *nulint = (int *)odr_malloc (odr_encode(), sizeof(*nulint));
+ *nulint = 0;
+
+ res->records = 0;
+
+ comp.which = Z_RecordComp_simple;
+ /* how many records does the user agent want, then? */
+ if (hits <= *req->smallSetUpperBound)
+ {
+ *toget = hits;
+ if ((comp.u.simple = req->smallSetElementSetNames))
+ compp = ∁
+ }
+ else if (hits < *req->largeSetLowerBound)
+ {
+ *toget = *req->mediumSetPresentNumber;
+ if (*toget > hits)
+ *toget = hits;
+ if ((comp.u.simple = req->mediumSetElementSetNames))
+ compp = ∁
+ }
+ else
+ *toget = 0;
+
+ if (*toget && !res->records)
+ {
+ res->records =
+ pack_records(req->resultSetName, 1,
+ toget, compp, next, presst,
+ req->preferredRecordSyntax);
+ if (!res->records)
+ return;
+ res->numberOfRecordsReturned = toget;
+ res->nextResultSetPosition = next;
+ res->searchStatus = sr;
+ res->resultSetStatus = 0;
+ res->presentStatus = presst;
+ }
+ else
+ {
+ if (hits)
+ *next = 1;
+ res->numberOfRecordsReturned = nulint;
+ res->nextResultSetPosition = next;
+ res->searchStatus = sr;
+ res->resultSetStatus = 0;
+ res->presentStatus = 0;
+ }
+}
+
+void Yaz_Z_Server::recv_Z_PDU (Z_APDU *apdu_request)
+{
+ Z_APDU *apdu_response;
+ switch (apdu_request->which)
+ {
+ case Z_APDU_initRequest:
+ logf (LOG_LOG, "got InitRequest");
+ apdu_response = create_Z_PDU(Z_APDU_initResponse);
+ recv_Z_init (apdu_request->u.initRequest,
+ apdu_response->u.initResponse);
+ send_Z_PDU(apdu_response);
+ break;
+ case Z_APDU_searchRequest:
+ logf (LOG_LOG, "got SearchRequest");
+ apdu_response = create_Z_PDU(Z_APDU_searchResponse);
+ recv_Z_search (apdu_request->u.searchRequest,
+ apdu_response->u.searchResponse);
+ if (!apdu_response->u.searchResponse->records)
+ {
+ piggyback(apdu_request->u.searchRequest,
+ apdu_response->u.searchResponse);
+ }
+ send_Z_PDU(apdu_response);
+ break;
+ case Z_APDU_presentRequest:
+ logf (LOG_LOG, "got PresentRequest");
+ apdu_response = create_Z_PDU(Z_APDU_presentResponse);
+ recv_Z_present (apdu_request->u.presentRequest,
+ apdu_response->u.presentResponse);
+ send_Z_PDU(apdu_response);
+ break;
+ }
}
projects / yazpp-moved-to-github.git / blobdiff