+
+
+void zebra_set_state (ZebraHandle zh, int val, int seqno)
+{
+ char state_fname[256];
+ char *fname;
+ long p = getpid();
+ FILE *f;
+ ASSERTZH;
+ zh->errCode=0;
+
+ sprintf (state_fname, "state.%s.LCK", zh->reg_name);
+ fname = zebra_mk_fname (res_get(zh->res, "lockDir"), state_fname);
+ f = fopen (fname, "w");
+
+ yaz_log (LOG_DEBUG, "%c %d %ld", val, seqno, p);
+ fprintf (f, "%c %d %ld\n", val, seqno, p);
+ fclose (f);
+ xfree (fname);
+}
+
+void zebra_get_state (ZebraHandle zh, char *val, int *seqno)
+{
+ char state_fname[256];
+ char *fname;
+ FILE *f;
+
+ ASSERTZH;
+ zh->errCode=0;
+ sprintf (state_fname, "state.%s.LCK", zh->reg_name);
+ fname = zebra_mk_fname (res_get(zh->res, "lockDir"), state_fname);
+ f = fopen (fname, "r");
+ *val = 'o';
+ *seqno = 0;
+
+ if (f)
+ {
+ fscanf (f, "%c %d", val, seqno);
+ fclose (f);
+ }
+ xfree (fname);
+}
+
+int zebra_begin_read (ZebraHandle zh)
+{
+ return zebra_begin_trans(zh, 0);
+}
+
+void zebra_end_read (ZebraHandle zh)
+{
+ zebra_end_trans(zh);
+}
+
+int zebra_begin_trans (ZebraHandle zh, int rw)
+{
+ ASSERTZHRES;
+ assert (zh->res);
+ if (rw)
+ {
+ int pass;
+ int seqno = 0;
+ char val = '?';
+ const char *rval = 0;
+
+ (zh->trans_no++);
+ if (zh->trans_w_no)
+ return 0;
+ if (zh->trans_no != 1)
+ {
+ zh->errCode = 2;
+ zh->errString = "write trans not allowed within read trans";
+ return -1;
+ }
+ zh->trans_w_no = zh->trans_no;
+
+ zh->errCode=0;
+
+ yaz_log (LOG_LOG, "zebra_begin_trans");
+
+ zh->records_inserted = 0;
+ zh->records_updated = 0;
+ zh->records_deleted = 0;
+ zh->records_processed = 0;
+
+#if HAVE_SYS_TIMES_H
+ times (&zh->tms1);
+#endif
+ /* lock */
+ if (zh->shadow_enable)
+ rval = res_get (zh->res, "shadow");
+
+ for (pass = 0; pass < 2; pass++)
+ {
+ if (rval)
+ {
+ zebra_lock_r (zh->lock_normal);
+ zebra_lock_w (zh->lock_shadow);
+ }
+ else
+ {
+ zebra_lock_w (zh->lock_normal);
+ zebra_lock_w (zh->lock_shadow);
+ }
+
+ zebra_get_state (zh, &val, &seqno);
+ if (val == 'c')
+ {
+ yaz_log (LOG_LOG, "previous transaction didn't finish commit");
+ zebra_unlock (zh->lock_shadow);
+ zebra_unlock (zh->lock_normal);
+ zebra_commit (zh);
+ continue;
+ }
+ else if (val == 'd')
+ {
+ if (rval)
+ {
+ BFiles bfs = bfs_create (res_get (zh->res, "shadow"),
+ zh->path_reg);
+ yaz_log (LOG_LOG, "previous transaction didn't reach commit");
+ bf_commitClean (bfs, rval);
+ bfs_destroy (bfs);
+ }
+ else
+ {
+ yaz_log (LOG_WARN, "your previous transaction didn't finish");
+ }
+ }
+ break;
+ }
+ if (pass == 2)
+ {
+ yaz_log (LOG_FATAL, "zebra_begin_trans couldn't finish commit");
+ abort();
+ return -1;
+ }
+ zebra_set_state (zh, 'd', seqno);
+
+ zh->reg = zebra_register_open (zh->service, zh->reg_name,
+ 1, rval ? 1 : 0, zh->res,
+ zh->path_reg);
+
+ zh->reg->seqno = seqno;
+ }
+ else
+ {
+ int dirty = 0;
+ char val;
+ int seqno;
+
+ (zh->trans_no)++;
+
+ if (zh->trans_no != 1)
+ {
+ zebra_flush_reg (zh);
+ return 0;
+ }
+ zh->errCode=0;
+#if HAVE_SYS_TIMES_H
+ times (&zh->tms1);
+#endif
+ if (!zh->res)
+ {
+ (zh->trans_no)--;
+ zh->errCode = 109;
+ return -1;
+ }
+ if (!zh->lock_normal || !zh->lock_shadow)
+ {
+ (zh->trans_no)--;
+ zh->errCode = 2;
+ return -1;
+ }
+ zebra_get_state (zh, &val, &seqno);
+ if (val == 'd')
+ val = 'o';
+
+ if (!zh->reg)
+ dirty = 1;
+ else if (seqno != zh->reg->seqno)
+ {
+ yaz_log (LOG_LOG, "reopen seqno cur/old %d/%d",
+ seqno, zh->reg->seqno);
+ dirty = 1;
+ }
+ else if (zh->reg->last_val != val)
+ {
+ yaz_log (LOG_LOG, "reopen last cur/old %d/%d",
+ val, zh->reg->last_val);
+ dirty = 1;
+ }
+ if (!dirty)
+ return 0;
+
+ if (val == 'c')
+ zebra_lock_r (zh->lock_shadow);
+ else
+ zebra_lock_r (zh->lock_normal);
+
+ if (zh->reg)
+ zebra_register_close (zh->service, zh->reg);
+ zh->reg = zebra_register_open (zh->service, zh->reg_name,
+ 0, val == 'c' ? 1 : 0,
+ zh->res, zh->path_reg);
+ if (!zh->reg)
+ {
+ zh->errCode = 109;
+ return -1;
+ }
+ zh->reg->last_val = val;
+ zh->reg->seqno = seqno;
+ }
+ return 0;
+}
+
+void zebra_end_trans (ZebraHandle zh) {
+ ZebraTransactionStatus dummy;
+ zebra_end_transaction(zh, &dummy);
+}
+
+void zebra_end_transaction (ZebraHandle zh, ZebraTransactionStatus *status)
+{
+ char val;
+ int seqno;
+ const char *rval;
+
+ ASSERTZH;
+
+ status->processed = 0;
+ status->inserted = 0;
+ status->updated = 0;
+ status->deleted = 0;
+ status->utime = 0;
+ status->stime = 0;
+
+ if (zh->trans_no != zh->trans_w_no)
+ {
+ zh->trans_no--;
+ if (zh->trans_no != 0)
+ return;
+
+ /* release read lock */
+
+ zebra_unlock (zh->lock_normal);
+ zebra_unlock (zh->lock_shadow);
+ }
+ else
+ { /* release write lock */
+ zh->trans_no--;
+ zh->trans_w_no = 0;
+
+ yaz_log (LOG_LOG, "zebra_end_trans");
+ rval = res_get (zh->res, "shadow");
+
+ zebraExplain_runNumberIncrement (zh->reg->zei, 1);
+
+ zebra_flush_reg (zh);
+
+ zebra_register_close (zh->service, zh->reg);
+ zh->reg = 0;
+
+ yaz_log (LOG_LOG, "Records: %7d i/u/d %d/%d/%d",
+ zh->records_processed, zh->records_inserted,
+ zh->records_updated, zh->records_deleted);
+
+ status->processed = zh->records_processed;
+ status->inserted = zh->records_inserted;
+ status->updated = zh->records_updated;
+ status->deleted = zh->records_deleted;
+
+ zebra_get_state (zh, &val, &seqno);
+ if (val != 'd')
+ {
+ BFiles bfs = bfs_create (rval, zh->path_reg);
+ yaz_log (LOG_LOG, "deleting shadow stuff val=%c", val);
+ bf_commitClean (bfs, rval);
+ bfs_destroy (bfs);
+ }
+ if (!rval)
+ seqno++;
+ zebra_set_state (zh, 'o', seqno);
+
+ zebra_unlock (zh->lock_shadow);
+ zebra_unlock (zh->lock_normal);
+
+ }
+#if HAVE_SYS_TIMES_H
+ times (&zh->tms2);
+ logf (LOG_LOG, "user/system: %ld/%ld",
+ (long) (zh->tms2.tms_utime - zh->tms1.tms_utime),
+ (long) (zh->tms2.tms_stime - zh->tms1.tms_stime));
+
+ status->utime = (long) (zh->tms2.tms_utime - zh->tms1.tms_utime);
+ status->stime = (long) (zh->tms2.tms_stime - zh->tms1.tms_stime);
+#endif
+}
+
+void zebra_repository_update (ZebraHandle zh)
+{
+ ASSERTZH;
+ zh->errCode=0;
+ logf (LOG_LOG, "updating %s", zh->rGroup.path);
+ repositoryUpdate (zh);
+}
+
+void zebra_repository_delete (ZebraHandle zh)
+{
+ ASSERTZH;
+ zh->errCode=0;
+ logf (LOG_LOG, "deleting %s", zh->rGroup.path);
+ repositoryDelete (zh);
+}
+
+void zebra_repository_show (ZebraHandle zh)
+{
+ ASSERTZH;
+ zh->errCode=0;
+ repositoryShow (zh);
+}
+
+int zebra_commit (ZebraHandle zh)
+{
+ int seqno;
+ char val;
+ const char *rval;
+ BFiles bfs;
+ ASSERTZH;
+ zh->errCode=0;
+
+ if (!zh->res)
+ {
+ zh->errCode = 109;
+ return -1;
+ }
+ rval = res_get (zh->res, "shadow");
+ if (!rval)
+ {
+ logf (LOG_WARN, "Cannot perform commit");
+ logf (LOG_WARN, "No shadow area defined");
+ return 0;
+ }
+
+ zebra_lock_w (zh->lock_normal);
+ zebra_lock_r (zh->lock_shadow);
+
+ bfs = bfs_create (res_get (zh->res, "register"), zh->path_reg);
+
+ zebra_get_state (zh, &val, &seqno);
+
+ if (rval && *rval)
+ bf_cache (bfs, rval);
+ if (bf_commitExists (bfs))
+ {
+ zebra_set_state (zh, 'c', seqno);
+
+ logf (LOG_LOG, "commit start");
+ bf_commitExec (bfs);
+#ifndef WIN32
+ sync ();
+#endif
+ logf (LOG_LOG, "commit clean");
+ bf_commitClean (bfs, rval);
+ seqno++;
+ zebra_set_state (zh, 'o', seqno);
+ }
+ else
+ {
+ logf (LOG_LOG, "nothing to commit");
+ }
+ bfs_destroy (bfs);
+
+ zebra_unlock (zh->lock_shadow);
+ zebra_unlock (zh->lock_normal);
+ return 0;
+}
+
+int zebra_init (ZebraHandle zh)
+{
+ const char *rval;
+ BFiles bfs = 0;
+ ASSERTZH;
+ zh->errCode=0;
+
+ if (!zh->res)
+ {
+ zh->errCode = 109;
+ return -1;
+ }
+ rval = res_get (zh->res, "shadow");
+
+ bfs = bfs_create (res_get (zh->service->global_res, "register"),
+ zh->path_reg);
+ if (rval && *rval)
+ bf_cache (bfs, rval);
+
+ bf_reset (bfs);
+ bfs_destroy (bfs);
+ zebra_set_state (zh, 'o', 0);
+ return 0;
+}
+
+int zebra_compact (ZebraHandle zh)
+{
+ BFiles bfs;
+ ASSERTZH;
+ zh->errCode=0;
+ if (!zh->res)
+ {
+ zh->errCode = 109;
+ return -1;
+ }
+ bfs = bfs_create (res_get (zh->res, "register"), zh->path_reg);
+ inv_compact (bfs);
+ bfs_destroy (bfs);
+ return 0;
+}
+
+int zebra_record_insert (ZebraHandle zh, const char *buf, int len)
+{
+ int sysno = 0;
+ int olderr;
+ ASSERTZH;
+ zh->errCode=0;
+ zebra_begin_trans (zh, 1);
+ if (zh->errCode)
+ return 0; /* bad sysno */
+ extract_rec_in_mem (zh, "grs.sgml",
+ buf, len,
+ "Default", /* database */
+ 0 /* delete_flag */,
+ 0 /* test_mode */,
+ &sysno /* sysno */,
+ 1 /* store_keys */,
+ 1 /* store_data */,
+ 0 /* match criteria */);
+ olderr=zh->errCode;
+ zebra_end_trans (zh);
+ if (olderr)
+ zh->errCode=olderr;
+ return sysno;
+}
+
+void zebra_set_group (ZebraHandle zh, struct recordGroup *rg)
+{
+ ASSERTZH;
+ zh->errCode=0;
+ memcpy (&zh->rGroup, rg, sizeof(*rg));
+}
+
+void zebra_result (ZebraHandle zh, int *code, char **addinfo)
+{
+ ASSERTZH;
+ *code = zh->errCode;
+ *addinfo = zh->errString;
+}
+
+void zebra_shadow_enable (ZebraHandle zh, int value)
+{
+ ASSERTZH;
+ zh->errCode=0;
+ zh->shadow_enable = value;
+}
+
+int zebra_record_encoding (ZebraHandle zh, const char *encoding)
+{
+ ASSERTZH;
+ zh->errCode=0;
+ xfree (zh->record_encoding);
+
+ /*
+ * Fixme!
+ */
+
+ if (zh->iconv_to_utf8 != 0)
+ yaz_iconv_close(zh->iconv_to_utf8);
+ if (zh->iconv_from_utf8 != 0)
+ yaz_iconv_close(zh->iconv_from_utf8);
+
+ zh->record_encoding = xstrdup (encoding);
+
+ logf(LOG_DEBUG, "Reset record encoding: %s", encoding);
+
+ zh->iconv_to_utf8 =
+ yaz_iconv_open ("UTF-8", encoding);
+ if (zh->iconv_to_utf8 == 0)
+ yaz_log (LOG_WARN, "iconv: %s to UTF-8 unsupported", encoding);
+ zh->iconv_from_utf8 =
+ yaz_iconv_open (encoding, "UTF-8");
+ if (zh->iconv_to_utf8 == 0)
+ yaz_log (LOG_WARN, "iconv: UTF-8 to %s unsupported", encoding);
+
+ return 0;
+}
+
+void zebra_set_resource(ZebraHandle zh, const char *name, const char *value)
+{
+ ASSERTZH;
+ zh->errCode=0;
+ res_put(zh->res, name, value);
+}
+
+const char *zebra_get_resource(ZebraHandle zh,
+ const char *name, const char *defaultvalue)
+{
+ ASSERTZH;
+ zh->errCode=0;
+ return res_get_def( zh->res, name, (char *)defaultvalue);
+}
+
+/* moved from zebra_api_ext.c by pop */
+
+int zebra_trans_no (ZebraHandle zh) {
+ return (zh->trans_no);
+}
+
+
+
+int zebra_get_shadow_enable (ZebraHandle zh) {
+ return (zh->shadow_enable);
+}
+
+void zebra_set_shadow_enable (ZebraHandle zh, int value) {
+ zh->shadow_enable = value;
+}
+
+void init_recordGroup (struct recordGroup *rg) {
+ rg->groupName = NULL;
+ rg->databaseName = NULL;
+ rg->path = NULL;
+ rg->recordId = NULL;
+ rg->recordType = NULL;
+ rg->flagStoreData = -1;
+ rg->flagStoreKeys = -1;
+ rg->flagRw = 1;
+ rg->databaseNamePath = 0;
+ rg->explainDatabase = 0;
+ rg->fileVerboseLimit = 100000;
+ rg->followLinks = -1;
+}
+
+
+/* This is from extract.c... it seems useful, when extract_rec_in mem is
+ called... and in general... Should be moved to somewhere else */
+void res_get_recordGroup (ZebraHandle zh,
+ struct recordGroup *rGroup,
+ const char *ext) {
+ char gprefix[128];
+ char ext_res[128];
+
+ if (!rGroup->groupName || !*rGroup->groupName)
+ *gprefix = '\0';
+ else
+ sprintf (gprefix, "%s.", rGroup->groupName);
+
+ /* determine file type - depending on extension */
+ if (!rGroup->recordType) {
+ sprintf (ext_res, "%srecordType.%s", gprefix, ext);
+ if (!(rGroup->recordType = res_get (zh->res, ext_res))) {
+ sprintf (ext_res, "%srecordType", gprefix);
+ rGroup->recordType = res_get (zh->res, ext_res);
+ }
+ }
+ /* determine match criteria */
+ if (!rGroup->recordId) {
+ sprintf (ext_res, "%srecordId.%s", gprefix, ext);
+ if (!(rGroup->recordId = res_get (zh->res, ext_res))) {
+ sprintf (ext_res, "%srecordId", gprefix);
+ rGroup->recordId = res_get (zh->res, ext_res);
+ }
+ }
+
+ /* determine database name */
+ if (!rGroup->databaseName) {
+ sprintf (ext_res, "%sdatabase.%s", gprefix, ext);
+ if (!(rGroup->databaseName = res_get (zh->res, ext_res))) {
+ sprintf (ext_res, "%sdatabase", gprefix);
+ rGroup->databaseName = res_get (zh->res, ext_res);
+ }
+ }
+ if (!rGroup->databaseName)
+ rGroup->databaseName = "Default";
+
+ /* determine if explain database */
+ sprintf (ext_res, "%sexplainDatabase", gprefix);
+ rGroup->explainDatabase =
+ atoi (res_get_def (zh->res, ext_res, "0"));
+
+ /* storeData */
+ if (rGroup->flagStoreData == -1) {
+ const char *sval;
+ sprintf (ext_res, "%sstoreData.%s", gprefix, ext);
+ if (!(sval = res_get (zh->res, ext_res))) {
+ sprintf (ext_res, "%sstoreData", gprefix);
+ sval = res_get (zh->res, ext_res);
+ }
+ if (sval)
+ rGroup->flagStoreData = atoi (sval);
+ }
+ if (rGroup->flagStoreData == -1) rGroup->flagStoreData = 0;
+
+ /* storeKeys */
+ if (rGroup->flagStoreKeys == -1) {
+ const char *sval;
+
+ sprintf (ext_res, "%sstoreKeys.%s", gprefix, ext);
+ sval = res_get (zh->res, ext_res);
+ if (!sval) {
+ sprintf (ext_res, "%sstoreKeys", gprefix);
+ sval = res_get (zh->res, ext_res);
+ }
+ if (!sval) sval = res_get (zh->res, "storeKeys");
+ if (sval) rGroup->flagStoreKeys = atoi (sval);
+ }
+ if (rGroup->flagStoreKeys == -1) rGroup->flagStoreKeys = 0;
+
+}
+
+
+/* almost the same as zebra_records_retrieve ... but how did it work?
+ I mean for multiple records ??? CHECK ??? */
+void api_records_retrieve (ZebraHandle zh, ODR stream,
+ const char *setname, Z_RecordComposition *comp,
+ oid_value input_format, int num_recs,
+ ZebraRetrievalRecord *recs)
+{
+ ZebraPosSet poset;
+ int i, *pos_array;
+
+ if (!zh->res)
+ {
+ zh->errCode = 30;
+ zh->errString = odr_strdup (stream, setname);
+ return;
+ }
+
+ zh->errCode = 0;
+
+ if (zebra_begin_read (zh))
+ return;
+
+ pos_array = (int *) xmalloc (num_recs * sizeof(*pos_array));
+ for (i = 0; i<num_recs; i++)
+ pos_array[i] = recs[i].position;
+ poset = zebraPosSetCreate (zh, setname, num_recs, pos_array);
+ if (!poset)
+ {
+ logf (LOG_DEBUG, "zebraPosSetCreate error");
+ zh->errCode = 30;
+ zh->errString = nmem_strdup (stream->mem, setname);
+ }
+ else
+ {
+ for (i = 0; i<num_recs; i++)
+ {
+ if (poset[i].term)
+ {
+ recs[i].errCode = 0;
+ recs[i].format = VAL_SUTRS;
+ recs[i].len = strlen(poset[i].term);
+ recs[i].buf = poset[i].term;
+ recs[i].base = poset[i].db;
+ recs[i].sysno = 0;
+
+ }
+ else if (poset[i].sysno)
+ {
+ /* changed here ??? CHECK ??? */
+ char *b;
+ recs[i].errCode =
+ zebra_record_fetch (zh, poset[i].sysno, poset[i].score,
+ stream, input_format, comp,
+ &recs[i].format,
+ &b,
+ &recs[i].len,
+ &recs[i].base);
+ recs[i].buf = (char *) odr_malloc(stream,recs[i].len);
+ memcpy(recs[i].buf, b, recs[i].len);
+ recs[i].errString = 0; /* Hmmm !!! we should get this */
+ recs[i].sysno = poset[i].sysno;
+ recs[i].score = poset[i].score;
+ }
+ else
+ {
+ char num_str[20];
+
+ sprintf (num_str, "%d", pos_array[i]);
+ zh->errCode = 13;
+ zh->errString = odr_strdup (stream, num_str);
+ break;
+ }
+
+ }
+ zebraPosSetDestroy (zh, poset, num_recs);
+ }
+ zebra_end_read (zh);
+ xfree (pos_array);
+}
+
+
+/* ---------------------------------------------------------------------------
+ Record insert(=update), delete
+
+ If sysno is provided, then it's used to identify the reocord.
+ If not, and match_criteria is provided, then sysno is guessed
+ If not, and a record is provided, then sysno is got from there
+*/
+
+int zebra_update_record (ZebraHandle zh,
+ struct recordGroup *rGroup,
+ const char *recordType,
+ int sysno, const char *match, const char *fname,
+ const char *buf, int buf_size)
+
+{
+ int res;
+
+ if (buf_size < 1) buf_size = strlen(buf);
+
+ zebra_begin_trans(zh, 1);
+ res=bufferExtractRecord (zh, buf, buf_size, rGroup,
+ 0, // delete_flag
+ 0, // test_mode,
+ recordType,
+ &sysno,
+ match, fname);
+ zebra_end_trans(zh);
+ return sysno;
+}
+
+int zebra_delete_record (ZebraHandle zh,
+ struct recordGroup *rGroup,
+ const char *recordType,
+ int sysno, const char *match, const char *fname,
+ const char *buf, int buf_size)
+{
+ int res;
+
+ if (buf_size < 1) buf_size = strlen(buf);
+
+ zebra_begin_trans(zh, 1);
+ res=bufferExtractRecord (zh, buf, buf_size, rGroup,
+ 1, // delete_flag
+ 0, // test_mode,
+ recordType,
+ &sysno,
+ match,fname);
+ zebra_end_trans(zh);
+ return sysno;
+}
+
+/* ---------------------------------------------------------------------------
+ Searching
+
+ zebra_search_RPN is the same as zebra_search_rpn, except that read locking
+ is not mandatory. (it's repeatable now, also in zebraapi.c)
+*/
+
+void zebra_search_RPN (ZebraHandle zh, ODR decode, ODR stream,
+ Z_RPNQuery *query, const char *setname, int *hits)
+{
+ zh->hits = 0;
+ *hits = 0;
+
+ if (zebra_begin_read (zh))
+ return;
+ resultSetAddRPN (zh, decode, stream, query,
+ zh->num_basenames, zh->basenames, setname);
+
+ zebra_end_read (zh);
+
+ *hits = zh->hits;
+}
+
+int zebra_search_PQF (ZebraHandle zh,
+ ODR odr_input, ODR odr_output,
+ const char *pqf_query,
+ const char *setname)
+
+{
+ int hits;
+ Z_RPNQuery *query;
+ query = p_query_rpn (odr_input, PROTO_Z3950, pqf_query);
+
+ if (!query) {
+ logf (LOG_WARN, "bad query %s\n", pqf_query);
+ odr_reset (odr_input);
+ return(0);
+ }
+ zebra_search_RPN (zh, odr_input, odr_output, query, setname, &hits);
+
+ odr_reset (odr_input);
+ odr_reset (odr_output);
+
+ return(hits);
+}
+
+/* ---------------------------------------------------------------------------
+ Sort - a simplified interface, with optional read locks.
+*/
+int sort (ZebraHandle zh,
+ ODR stream,
+ const char *sort_spec,
+ const char *output_setname,
+ const char **input_setnames
+ )
+{
+ int num_input_setnames = 0;
+ int sort_status = 0;
+ Z_SortKeySpecList *sort_sequence = yaz_sort_spec (stream, sort_spec);
+ if (!sort_sequence) {
+ logf(LOG_WARN,"invalid sort specs '%s'", sort_spec);
+ zh->errCode = 207;
+ return (-1);
+ }
+
+ /* we can do this, since the perl typemap code for char** will
+ put a NULL at the end of list */
+ while (input_setnames[num_input_setnames]) num_input_setnames++;
+
+ if (zebra_begin_read (zh))
+ return -1;
+
+ resultSetSort (zh, stream->mem, num_input_setnames, input_setnames,
+ output_setname, sort_sequence, &sort_status);
+
+ zebra_end_read(zh);
+ return (sort_status);
+}