-/* $Id: filter_sru_to_z3950.cpp,v 1.24 2006-12-28 13:26:06 marc Exp $
- Copyright (c) 2005-2006, Index Data.
+/* $Id: filter_sru_to_z3950.cpp,v 1.29 2007-01-25 14:05:54 adam Exp $
+ Copyright (c) 2005-2007, Index Data.
See the LICENSE file for details
- */
+*/
#include "config.hpp"
#include "filter.hpp"
#include <sstream>
#include <string>
#include <algorithm>
+#include <map>
namespace mp = metaproxy_1;
namespace mp_util = metaproxy_1::util;
class SRUtoZ3950::Impl {
public:
void configure(const xmlNode *xmlnode);
- void process(metaproxy_1::Package &package) const;
+ void process(metaproxy_1::Package &package);
private:
union SRW_query {char * cql; char * xcql; char * pqf;};
typedef const int& SRW_query_type;
+ std::map<std::string, const xmlNode *> m_database_explain;
private:
bool z3950_build_query(mp::odr &odr_en, Z_Query *z_query,
SRW_query_type query_type) const;
bool z3950_init_request(mp::Package &package,
- const std::string
- &database = "Default") const;
+ mp::odr &odr_en,
+ Z_SRW_PDU *sru_pdu_res,
+ const std::string
+ &database = "Default") const;
bool z3950_close_request(mp::Package &package) const;
Z_SRW_scanRequest
const *sr_req) const;
+ bool z3950_to_srw_diagnostics_ok(mp::odr &odr_en,
+ Z_SRW_searchRetrieveResponse *srw_res,
+ Z_Records *records) const;
int z3950_to_srw_diag(mp::odr &odr_en,
Z_SRW_searchRetrieveResponse *srw_res,
m_p->process(package);
}
-void yf::SRUtoZ3950::Impl::configure(const xmlNode *xmlnode)
+void yf::SRUtoZ3950::Impl::configure(const xmlNode *confignode)
{
+ const xmlNode * dbnode;
+
+ for (dbnode = confignode->children; dbnode; dbnode = dbnode->next){
+ if (dbnode->type != XML_ELEMENT_NODE)
+ continue;
+
+ std::string database;
+ mp::xml::check_element_mp(dbnode, "database");
+
+ for (struct _xmlAttr *attr = dbnode->properties;
+ attr; attr = attr->next){
+
+ mp::xml::check_attribute(attr, "", "name");
+ database = mp::xml::get_text(attr);
+
+ const xmlNode *explainnode;
+ for (explainnode = dbnode->children;
+ explainnode; explainnode = explainnode->next){
+ if (explainnode->type != XML_ELEMENT_NODE)
+ continue;
+ if (explainnode)
+ break;
+ }
+ // assigning explain node to database name - no check yet
+ m_database_explain.insert(std::make_pair(database, explainnode));
+ }
+ }
}
-void yf::SRUtoZ3950::Impl::process(mp::Package &package) const
+void yf::SRUtoZ3950::Impl::process(mp::Package &package)
{
Z_GDU *zgdu_req = package.request().get();
// only working on HTTP_Request packages now
-
- // TODO: Z3950 response parsing and translation to SRU package
bool ok = true;
mp::odr odr_de(ODR_DECODE);
Z_SRW_PDU *sru_pdu_req = 0;
mp::odr odr_en(ODR_ENCODE);
- //Z_SRW_PDU *sru_pdu_res = 0;
Z_SRW_PDU *sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
+ // determine database with the HTTP header information only
+ mp_util::SRUServerInfo sruinfo = mp_util::get_sru_server_info(package);
+ std::map<std::string, const xmlNode *>::iterator idbexp;
+ idbexp = m_database_explain.find(sruinfo.database);
+
+ // assign explain config XML DOM node if database is known
+ const xmlNode *explainnode = 0;
+ if (idbexp != m_database_explain.end()){
+ explainnode = idbexp->second;
+ }
+ // just moving package if database is not known
+ else {
+ package.move();
+ return;
+ }
+
+
+ // decode SRU request
Z_SOAP *soap = 0;
char *charset = 0;
char *stylesheet = 0;
+ // filter acts as sink for non-valid SRU requests
if (! (sru_pdu_req = mp_util::decode_sru_request(package, odr_de, odr_en,
sru_pdu_res, soap,
charset, stylesheet)))
{
- mp_util::build_simple_explain(package, odr_en, sru_pdu_res, 0);
+ mp_util::build_sru_explain(package, odr_en, sru_pdu_res,
+ sruinfo, explainnode);
mp_util::build_sru_response(package, odr_en, soap,
sru_pdu_res, charset, stylesheet);
package.session().close();
return;
}
-
- // SRU request package translation to Z3950 package
- //if (sru_pdu_req)
- // std::cout << *sru_pdu_req << "\n";
- //else
- // std::cout << "SRU empty\n";
-
-
- // explain
+ // filter acts as sink for SRU explain requests
if (sru_pdu_req && sru_pdu_req->which == Z_SRW_explain_request)
{
Z_SRW_explainRequest *er_req = sru_pdu_req->u.explain_request;
- //sru_pdu_res = yaz_srw_get(odr_en, Z_SRW_explain_response);
-
- mp_util::build_simple_explain(package, odr_en, sru_pdu_res, er_req);
+ //mp_util::build_simple_explain(package, odr_en, sru_pdu_res,
+ // sruinfo, er_req);
+ mp_util::build_sru_explain(package, odr_en, sru_pdu_res,
+ sruinfo, explainnode, er_req);
+ mp_util::build_sru_response(package, odr_en, soap,
+ sru_pdu_res, charset, stylesheet);
+ return;
}
// searchRetrieve
ok = mp_util::check_sru_query_exists(package, odr_en,
sru_pdu_res, sr_req);
- if (ok && z3950_init_request(package))
+ if (ok && z3950_init_request(package, odr_en, sru_pdu_res))
{
{
ok = z3950_search_request(package, odr_en,
4, "scan");
// to be used when we do scan
- if (false && z3950_init_request(package))
+ if (false && z3950_init_request(package, odr_en, sru_pdu_res))
{
z3950_scan_request(package, odr_en, sru_pdu_res, sr_req);
z3950_close_request(package);
return;
}
- //mp_util::build_sru_debug_package(package);
+ // build and send SRU response
mp_util::build_sru_response(package, odr_en, soap,
sru_pdu_res, charset, stylesheet);
return;
bool
yf::SRUtoZ3950::Impl::z3950_init_request(mp::Package &package,
- const std::string &database) const
+ mp::odr &odr_en,
+ Z_SRW_PDU *sru_pdu_res,
+ const std::string &database) const
{
// prepare Z3950 package
- //Session s;
- //Package z3950_package(s, package.origin());
Package z3950_package(package.session(), package.origin());
z3950_package.copy_filter(package);
// set initRequest APDU
- mp::odr odr_en(ODR_ENCODE);
Z_APDU *apdu = zget_APDU(odr_en, Z_APDU_initRequest);
Z_InitRequest *init_req = apdu->u.initRequest;
//TODO: add user name in apdu
z3950_package.request() = apdu;
// send Z3950 package
- // std::cout << "z3950_init_request " << *apdu <<"\n";
z3950_package.move();
// dead Z3950 backend detection
if (z3950_package.session().is_closed()){
+ yaz_add_srw_diagnostic(odr_en,
+ &(sru_pdu_res->u.response->diagnostics),
+ &(sru_pdu_res->u.response->num_diagnostics),
+ 2, 0);
package.session().close();
return false;
}
Z_GDU *z3950_gdu = z3950_package.response().get();
if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
- && z3950_gdu->u.z3950->which == Z_APDU_initResponse)
+ && z3950_gdu->u.z3950->which == Z_APDU_initResponse
+ && *z3950_gdu->u.z3950->u.initResponse->result)
return true;
+ yaz_add_srw_diagnostic(odr_en,
+ &(sru_pdu_res->u.response->diagnostics),
+ &(sru_pdu_res->u.response->num_diagnostics),
+ 2, 0);
+ package.session().close();
return false;
}
}
z3950_package.request() = apdu;
- //std::cout << "z3950_search_request " << *apdu << "\n";
+ // send Z39.50 package off to backend
z3950_package.move();
Z_GDU *z3950_gdu = z3950_package.response().get();
- //std::cout << "z3950_search_request " << *z3950_gdu << "\n";
//TODO: check success condition
-
//int yaz_diag_bib1_to_srw (int bib1_code);
//int yaz_diag_srw_to_bib1(int srw_code);
//Se kode i src/seshigh.c (srw_bend_search, srw_bend_init).
- if (z3950_gdu && z3950_gdu->which == Z_GDU_Z3950
- && z3950_gdu->u.z3950->which == Z_APDU_searchResponse
- && z3950_gdu->u.z3950->u.searchResponse->searchStatus)
+ if (!z3950_gdu || z3950_gdu->which != Z_GDU_Z3950
+ || z3950_gdu->u.z3950->which != Z_APDU_searchResponse
+ || !z3950_gdu->u.z3950->u.searchResponse
+ || !z3950_gdu->u.z3950->u.searchResponse->searchStatus)
{
+ yaz_add_srw_diagnostic(odr_en,
+ &(sru_pdu_res->u.response->diagnostics),
+ &(sru_pdu_res->u.response->num_diagnostics),
+ 2, 0);
+ package.session().close();
+ return false;
+ }
+
+ // everything fine, continuing
+ Z_SearchResponse *sr = z3950_gdu->u.z3950->u.searchResponse;
- Z_SearchResponse *sr = z3950_gdu->u.z3950->u.searchResponse;
- if (sr)
- {
- // srw'fy number of records
- sru_pdu_res->u.response->numberOfRecords
- = (int *) odr_malloc(odr_en, sizeof(int *));
- *(sru_pdu_res->u.response->numberOfRecords) = *(sr->resultCount);
-
- // srw'fy nextRecordPosition
- //sru_pdu_res->u.response->nextRecordPosition
- // = (int *) odr_malloc(odr_en, sizeof(int *));
- //*(sru_pdu_res->u.response->nextRecordPosition) = 1;
-
- }
-
- return true;
+ // checking non surrogate diagnostics in Z3950 search response package
+ if (!z3950_to_srw_diagnostics_ok(odr_en, sru_pdu_res->u.response,
+ sr->records))
+ {
+ return false;
}
+
+ // Finally, roll on and srw'fy number of records
+ sru_pdu_res->u.response->numberOfRecords
+ = (int *) odr_malloc(odr_en, sizeof(int *));
+ *(sru_pdu_res->u.response->numberOfRecords) = *(sr->resultCount);
- return false;
+ // srw'fy nextRecordPosition
+ //sru_pdu_res->u.response->nextRecordPosition
+ // = (int *) odr_malloc(odr_en, sizeof(int *));
+ //*(sru_pdu_res->u.response->nextRecordPosition) = 1;
+
+ return true;
}
bool
// attaching Z3950 package to filter chain
z3950_package.request() = apdu;
- //std::cout << "z3950_present_request " << *apdu << "\n";
+ // sending Z30.50 present request
z3950_package.move();
//check successful Z3950 present response
// everything fine, continuing
- //std::cout << "z3950_present_request OK\n";
Z_PresentResponse *pr = z3950_gdu->u.z3950->u.presentResponse;
Z_SRW_searchRetrieveResponse *sru_res = sru_pdu_res->u.response;
- // checking non surrogate dioagnostics in Z3950 present response package
- if (pr->records
- && pr->records->which == Z_Records_NSD
- && pr->records->u.nonSurrogateDiagnostic)
- {
- //int http_code =
- z3950_to_srw_diag(odr_en, sru_res,
- pr->records->u.nonSurrogateDiagnostic);
+
+ // checking non surrogate diagnostics in Z3950 present response package
+ if (!z3950_to_srw_diagnostics_ok(odr_en, sru_pdu_res->u.response,
+ pr->records))
return false;
- }
+
+
// copy all records if existing
if (pr->records && pr->records->which == Z_Records_DBOSD)
= pr->records->u.databaseOrSurDiagnostics->records[i];
sru_res->records[i].recordPosition
- = odr_intdup(odr_en,
- i + *(apdu->u.presentRequest->resultSetStartPoint));
+ = odr_intdup(odr_en,
+ i + *(apdu->u.presentRequest->resultSetStartPoint));
sru_res->records[i].recordPacking = record_packing;
}
+bool
+yf::SRUtoZ3950::Impl::z3950_to_srw_diagnostics_ok(mp::odr &odr_en,
+ Z_SRW_searchRetrieveResponse
+ *sru_res,
+ Z_Records *records) const
+{
+ // checking non surrogate diagnostics in Z3950 present response package
+ if (records
+ && records->which == Z_Records_NSD
+ && records->u.nonSurrogateDiagnostic)
+ {
+ z3950_to_srw_diag(odr_en, sru_res,
+ records->u.nonSurrogateDiagnostic);
+ return false;
+ }
+ return true;
+}
+
int
yf::SRUtoZ3950::Impl::z3950_to_srw_diag(mp::odr &odr_en,
Z_DefaultDiagFormat *ddf) const
{
int bib1_code = *ddf->condition;
- if (bib1_code == 109)
- return 404;
sru_res->num_diagnostics = 1;
sru_res->diagnostics = (Z_SRW_diagnostic *)
odr_malloc(odr_en, sizeof(*sru_res->diagnostics));
yaz_mk_std_diagnostic(odr_en, sru_res->diagnostics,
- yaz_diag_bib1_to_srw(*ddf->condition),
+ yaz_diag_bib1_to_srw(bib1_code),
ddf->u.v2Addinfo);
return 0;
}
projects / metaproxy-moved-to-github.git / blobdiff