private:
friend class Session;
Odr_int hits;
+ std::string db;
xmlDoc *doc;
};
class SPARQL::Session {
mp::odr &odr,
const char *sparql_query,
const char *uri);
+ Z_Records *fetch(
+ FrontendSetPtr fset,
+ ODR odr, Odr_oid *preferredRecordSyntax,
+ Z_ElementSetNames *esn,
+ int start, int number, int &error_code, std::string &addinfo,
+ int *number_returned, int *next_position);
bool m_in_use;
private:
bool m_support_named_result_sets;
}
}
-static const xmlNode *get_result(xmlDoc *doc, Odr_int *sz, Odr_int pos)
+static xmlNode *get_result(xmlDoc *doc, Odr_int *sz, Odr_int pos)
{
- const xmlNode *ptr = xmlDocGetRootElement(doc);
+ xmlNode *ptr = xmlDocGetRootElement(doc);
Odr_int cur = 0;
for (; ptr; ptr = ptr->next)
if (ptr->type == XML_ELEMENT_NODE &&
return ptr;
}
+Z_Records *yf::SPARQL::Session::fetch(
+ FrontendSetPtr fset,
+ ODR odr, Odr_oid *preferredRecordSyntax,
+ Z_ElementSetNames *esn,
+ int start, int number, int &error_code, std::string &addinfo,
+ int *number_returned, int *next_position)
+{
+ Z_Records *rec = (Z_Records *) odr_malloc(odr, sizeof(Z_Records));
+ rec->which = Z_Records_DBOSD;
+ rec->u.databaseOrSurDiagnostics = (Z_NamePlusRecordList *)
+ odr_malloc(odr, sizeof(Z_NamePlusRecordList));
+ rec->u.databaseOrSurDiagnostics->records = (Z_NamePlusRecord **)
+ odr_malloc(odr, sizeof(Z_NamePlusRecord *) * number);
+ int i;
+ for (i = 0; i < number; i++)
+ {
+ rec->u.databaseOrSurDiagnostics->records[i] = (Z_NamePlusRecord *)
+ odr_malloc(odr, sizeof(Z_NamePlusRecord));
+ Z_NamePlusRecord *npr = rec->u.databaseOrSurDiagnostics->records[i];
+ npr->databaseName = odr_strdup(odr, fset->db.c_str());
+ npr->which = Z_NamePlusRecord_databaseRecord;
+
+ xmlNode *node = get_result(fset->doc, 0, start - 1 + i);
+ if (!node)
+ break;
+ assert(node->type == XML_ELEMENT_NODE);
+ assert(!strcmp((const char *) node->name, "result"));
+ xmlNode *tmp = xmlCopyNode(node, 1);
+ xmlBufferPtr buf = xmlBufferCreate();
+ xmlNodeDump(buf, tmp->doc, tmp, 0, 0);
+ npr->u.databaseRecord =
+ z_ext_record_xml(odr, (const char *) buf->content, buf->use);
+ xmlFreeNode(tmp);
+ xmlBufferFree(buf);
+ }
+ rec->u.databaseOrSurDiagnostics->num_records = i;
+ *number_returned = i;
+ if (start + number > fset->hits)
+ *next_position = 0;
+ else
+ *next_position = start + number;
+ return rec;
+}
+
Z_APDU *yf::SPARQL::Session::run_sparql(mp::Package &package,
Z_APDU *apdu_req,
mp::odr &odr,
const char *sparql_query,
const char *uri)
{
+ Z_SearchRequest *req = apdu_req->u.searchRequest;
Package http_package(package.session(), package.origin());
http_package.copy_filter(package);
FrontendSetPtr fset(new FrontendSet);
fset->doc = xmlParseMemory(resp->content_buf, resp->content_len);
+ fset->db = req->databaseNames[0];
if (!fset->doc)
apdu_res = odr.create_searchResponse(apdu_req,
YAZ_BIB1_TEMPORARY_SYSTEM_ERROR,
"invalid XML from backendbackend");
else
{
- apdu_res = odr.create_searchResponse(apdu_req, 0, 0);
- get_result(fset->doc, apdu_res->u.searchResponse->resultCount,
- -1);
- m_frontend_sets[apdu_req->u.searchRequest->resultSetName] = fset;
+ Z_Records *records = 0;
+ int number_returned = 0;
+ int next_position = 0;
+ int error_code = 0;
+ std::string addinfo;
+
+ get_result(fset->doc, &fset->hits, -1);
+ m_frontend_sets[req->resultSetName] = fset;
+
+ Odr_int number = 0;
+ const char *element_set_name = 0;
+ mp::util::piggyback_sr(req, fset->hits, number, &element_set_name);
+ if (number)
+ {
+ Z_ElementSetNames *esn;
+
+ if (number > *req->smallSetUpperBound)
+ esn = req->mediumSetElementSetNames;
+ else
+ esn = req->smallSetElementSetNames;
+ records = fetch(fset,
+ odr, req->preferredRecordSyntax, esn,
+ 1, number,
+ error_code, addinfo,
+ &number_returned,
+ &next_position);
+ }
+ if (error_code)
+ {
+ apdu_res =
+ odr.create_searchResponse(
+ apdu_req, error_code, addinfo.c_str());
+ }
+ else
+ {
+ apdu_res =
+ odr.create_searchResponse(apdu_req, 0, 0);
+ Z_SearchResponse *resp = apdu_res->u.searchResponse;
+ *resp->resultCount = fset->hits;
+ *resp->numberOfRecordsReturned = number_returned;
+ *resp->nextResultSetPosition = next_position;
+ resp->records = records;
+ }
}
}
else
}
}
}
+ else if (apdu_req->which == Z_APDU_presentRequest)
+ {
+ Z_PresentRequest *req = apdu_req->u.presentRequest;
+ FrontendSets::iterator fset_it =
+ m_frontend_sets.find(req->resultSetId);
+ if (fset_it == m_frontend_sets.end())
+ {
+ apdu_res =
+ odr.create_presentResponse(
+ apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
+ req->resultSetId);
+ package.response() = apdu_res;
+ return;
+ }
+ int number_returned = 0;
+ int next_position = 0;
+ int error_code = 0;
+ std::string addinfo;
+ Z_ElementSetNames *esn = 0;
+ if (req->recordComposition)
+ {
+ if (req->recordComposition->which == Z_RecordComp_simple)
+ esn = req->recordComposition->u.simple;
+ else
+ {
+ apdu_res =
+ odr.create_presentResponse(
+ apdu_req,
+ YAZ_BIB1_ONLY_A_SINGLE_ELEMENT_SET_NAME_SUPPORTED,
+ 0);
+ package.response() = apdu_res;
+ return;
+ }
+ }
+ Z_Records *records = fetch(
+ fset_it->second,
+ odr, req->preferredRecordSyntax, esn,
+ *req->resultSetStartPoint, *req->numberOfRecordsRequested,
+ error_code, addinfo,
+ &number_returned,
+ &next_position);
+ if (error_code)
+ {
+ apdu_res =
+ odr.create_presentResponse(apdu_req, error_code,
+ addinfo.c_str());
+ }
+ else
+ {
+ apdu_res =
+ odr.create_presentResponse(apdu_req, 0, 0);
+ Z_PresentResponse *resp = apdu_res->u.presentResponse;
+ resp->records = records;
+ *resp->numberOfRecordsReturned = number_returned;
+ *resp->nextResultSetPosition = next_position;
+ }
+ }
else
{
apdu_res = odr.create_close(apdu_req,
projects / mp-sparql-moved-to-github.git / blobdiff