Added state-handle and some support for asynchronous activities.

[yaz-moved-to-github.git] / server / seshigh.c

diff --git a/server/seshigh.c b/server/seshigh.c
index b6ecb75..cb815fb 100644 (file)
--- a/server/seshigh.c
+++ b/server/seshigh.c
@@ -4,7 +4,16 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: seshigh.c,v $
- * Revision 1.10  1995-03-27 08:34:24  quinn
+ * Revision 1.13  1995-03-30 09:09:24  quinn
+ * Added state-handle and some support for asynchronous activities.
+ *
+ * Revision 1.12  1995/03/29  15:40:16  quinn
+ * Ongoing work. Statserv is now dynamic by default
+ *
+ * Revision 1.11  1995/03/28  09:16:21  quinn
+ * Added record packing to the search request
+ *
+ * Revision 1.10  1995/03/27  08:34:24  quinn
  * Added dynamic server functionality.
  * Released bindings to session.c (is now redundant)
  *
@@ -88,6 +97,8 @@ void destroy_association(association *h)
     free(h->encode_buffer);
     if (h->input_buffer)
        free(h->input_buffer);
+    if (h->backend)
+       bend_close(h->backend);
     free(h);
 }
 
@@ -186,6 +197,7 @@ static int process_initRequest(IOCHAN client, Z_InitRequest *req)
     association *assoc = iochan_getdata(client);
     bend_initrequest binitreq;
     bend_initresult *binitres;
+    Odr_bitmask options, protocolVersion;
 
     fprintf(stderr, "Got initRequest.\n");
     if (req->implementationId)
@@ -202,12 +214,27 @@ static int process_initRequest(IOCHAN client, Z_InitRequest *req)
        return -1;
     }
 
+    assoc->backend = binitres->handle;
     apdup = &apdu;
     apdu.which = Z_APDU_initResponse;
     apdu.u.initResponse = &resp;
     resp.referenceId = req->referenceId;
-    resp.options = req->options; /* should check these */
-    resp.protocolVersion = req->protocolVersion;
+    ODR_MASK_ZERO(&options);
+    if (ODR_MASK_GET(req->options, Z_Options_search))
+       ODR_MASK_SET(&options, Z_Options_search);
+    if (ODR_MASK_GET(req->options, Z_Options_present))
+       ODR_MASK_SET(&options, Z_Options_present);
+    if (ODR_MASK_GET(req->options, Z_Options_delSet))
+       ODR_MASK_SET(&options, Z_Options_delSet);
+    if (ODR_MASK_GET(req->options, Z_Options_namedResultSets))
+       ODR_MASK_SET(&options, Z_Options_namedResultSets);
+    resp.options = &options;
+    ODR_MASK_ZERO(&protocolVersion);
+    if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_1))
+       ODR_MASK_SET(&protocolVersion, Z_ProtocolVersion_1);
+    if (ODR_MASK_GET(req->protocolVersion, Z_ProtocolVersion_2))
+       ODR_MASK_SET(&protocolVersion, Z_ProtocolVersion_2);
+    resp.protocolVersion = &protocolVersion;
     assoc->maximumRecordSize = *req->maximumRecordSize;
     /*
      * This is not so hot. The big todo for ODR is dynamic memory allocation
@@ -222,8 +249,8 @@ static int process_initRequest(IOCHAN client, Z_InitRequest *req)
     resp.maximumRecordSize = &assoc->maximumRecordSize;
     resp.result = &result;
     resp.implementationId = "YAZ";
-    resp.implementationName = "YAZ/Simple asynchronous test server";
-    resp.implementationVersion = "$Revision: 1.10 $";
+    resp.implementationName = "Index Data/YAZ Generic Frontend Server";
+    resp.implementationVersion = "$Revision: 1.13 $";
     resp.userInformationField = 0;
     if (!z_APDU(assoc->encode, &apdup, 0))
     {
@@ -325,7 +352,7 @@ static Z_Records *pack_records(association *a, char *setname, int start,
        }
        freq.setname = setname;
        freq.number = recno;
-       if (!(fres = bend_fetch(&freq)))
+       if (!(fres = bend_fetch(a->backend, &freq, 0)))
        {
            *pres = Z_PRES_FAILURE;
            return diagrec(a->proto, 2, "Backend interface problem");
@@ -411,10 +438,10 @@ static int process_searchRequest(IOCHAN client, Z_SearchRequest *req)
     association *assoc = iochan_getdata(client);
     int nulint = 0;
     bool_t sr = 1;
-    int nrp;
     bend_searchrequest bsrq;
     bend_searchresult *bsrt;
     oident *oent;
+    int next = 0;
 
     fprintf(stderr, "Got SearchRequest.\n");
     apdup = &apdu;
@@ -434,26 +461,61 @@ static int process_searchRequest(IOCHAN client, Z_SearchRequest *req)
     }
     if (!resp.records)
     {
+       int toget;
+       Z_ElementSetNames *setnames;
+       int presst = 0;
+
        bsrq.setname = req->resultSetName;
        bsrq.replace_set = *req->replaceIndicator;
        bsrq.num_bases = req->num_databaseNames;
        bsrq.basenames = req->databaseNames;
        bsrq.query = req->query;
 
-       if (!(bsrt = bend_search(&bsrq)))
+       if (!(bsrt = bend_search(assoc->backend, &bsrq, 0)))
            return -1;
        else if (bsrt->errcode)
-           resp.records = diagrec(assoc->proto, bsrt->errcode, bsrt->errstring);
+           resp.records = diagrec(assoc->proto, bsrt->errcode,
+               bsrt->errstring);
        else
            resp.records = 0;
 
        resp.resultCount = &bsrt->hits;
-       resp.numberOfRecordsReturned = &nulint;
-       nrp = bsrt->hits ? 1 : 0;
-       resp.nextResultSetPosition = &nrp;
-       resp.searchStatus = &sr;
-       resp.resultSetStatus = &sr;
-       resp.presentStatus = 0;
+
+       /* how many records does the user agent want, then? */
+       if (bsrt->hits <= *req->smallSetUpperBound)
+       {
+           toget = bsrt->hits;
+           setnames = req->smallSetElementSetNames;
+       }
+       else if (bsrt->hits < *req->largeSetLowerBound)
+       {
+           toget = *req->mediumSetPresentNumber;
+           setnames = req->mediumSetElementSetNames;
+       }
+       else
+           toget = 0;
+
+       if (toget)
+       {
+           resp.records = pack_records(assoc, req->resultSetName, 1, &toget,
+               setnames, &next, &presst);
+           if (!resp.records)
+               return -1;
+           resp.numberOfRecordsReturned = &toget;
+           resp.nextResultSetPosition = &next;
+           resp.searchStatus = &sr;
+           resp.resultSetStatus = &sr;
+           resp.presentStatus = &presst;
+       }
+       else
+       {
+           resp.records = 0;
+           resp.numberOfRecordsReturned = &nulint;
+           resp.nextResultSetPosition = &nulint;
+           resp.searchStatus = &sr;
+           resp.resultSetStatus = &sr;
+           resp.presentStatus = 0;
+       }
     }
     else
     {