1 /* This file is part of Metaproxy.
2 Copyright (C) 2005-2011 Index Data
4 Metaproxy is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "filter_zoom.hpp"
22 #include <yaz/yaz-version.h>
24 #include <metaproxy/package.hpp>
25 #include <metaproxy/util.hpp>
28 #include <libxslt/xsltutils.h>
29 #include <libxslt/transform.h>
31 #include <boost/thread/mutex.hpp>
32 #include <boost/thread/condition.hpp>
33 #include <yaz/ccl_xml.h>
35 #include <yaz/rpn2cql.h>
36 #include <yaz/pquery.h>
38 #include <yaz/oid_db.h>
39 #include <yaz/diagbib1.h>
42 #include <yaz/querytowrbuf.h>
44 namespace mp = metaproxy_1;
45 namespace yf = mp::filter;
47 namespace metaproxy_1 {
49 struct Zoom::Searchable : boost::noncopyable {
50 std::string authentication;
56 std::string query_encoding;
58 std::string request_syntax;
59 std::string element_set;
60 std::string record_encoding;
61 std::string transform_xsl_fname;
64 CCL_bibset ccl_bibset;
65 Searchable(CCL_bibset base);
68 class Zoom::Backend : boost::noncopyable {
70 friend class Frontend;
72 ZOOM_connection m_connection;
73 ZOOM_resultset m_resultset;
74 std::string m_frontend_database;
76 xsltStylesheetPtr xsp;
78 Backend(SearchablePtr sptr);
80 void connect(std::string zurl, int *error, const char **addinfo);
81 void search_pqf(const char *pqf, Odr_int *hits,
82 int *error, const char **addinfo);
83 void search_cql(const char *cql, Odr_int *hits,
84 int *error, const char **addinfo);
85 void present(Odr_int start, Odr_int number, ZOOM_record *recs,
86 int *error, const char **addinfo);
87 void set_option(const char *name, const char *value);
88 const char *get_option(const char *name);
89 void get_zoom_error(int *error, const char **addinfo);
91 class Zoom::Frontend : boost::noncopyable {
96 yazpp_1::GDU m_init_gdu;
98 void handle_package(mp::Package &package);
99 void handle_search(mp::Package &package);
100 void handle_present(mp::Package &package);
101 BackendPtr get_backend_from_databases(std::string &database,
103 const char **addinfo);
104 Z_Records *get_records(Odr_int start,
105 Odr_int number_to_present,
107 const char **addinfo,
108 Odr_int *number_of_records_returned,
109 ODR odr, BackendPtr b,
110 Odr_oid *preferredRecordSyntax,
111 const char *element_set_name);
113 Frontend(Impl *impl);
117 friend class Frontend;
121 void process(metaproxy_1::Package & package);
122 void configure(const xmlNode * ptr, bool test_only);
124 FrontendPtr get_frontend(mp::Package &package);
125 void release_frontend(mp::Package &package);
126 SearchablePtr parse_torus(const xmlNode *ptr);
127 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
128 std::map<mp::Session, FrontendPtr> m_clients;
129 boost::mutex m_mutex;
130 boost::condition m_cond_session_ready;
131 std::string torus_url;
132 std::map<std::string,std::string> fieldmap;
139 // define Pimpl wrapper forwarding to Impl
141 yf::Zoom::Zoom() : m_p(new Impl)
146 { // must have a destructor because of boost::scoped_ptr
149 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only)
151 m_p->configure(xmlnode, test_only);
154 void yf::Zoom::process(mp::Package &package) const
156 m_p->process(package);
160 // define Implementation stuff
162 yf::Zoom::Backend::Backend(SearchablePtr ptr) : sptr(ptr)
164 m_connection = ZOOM_connection_create(0);
169 yf::Zoom::Backend::~Backend()
172 xsltFreeStylesheet(xsp);
173 ZOOM_connection_destroy(m_connection);
174 ZOOM_resultset_destroy(m_resultset);
178 void yf::Zoom::Backend::get_zoom_error(int *error, const char **addinfo)
181 *error = ZOOM_connection_error(m_connection, &msg, addinfo);
184 if (*error >= ZOOM_ERROR_CONNECT)
186 // turn ZOOM diagnostic into a Bib-1 2: with addinfo=zoom err msg
187 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
194 void yf::Zoom::Backend::connect(std::string zurl,
195 int *error, const char **addinfo)
197 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
198 get_zoom_error(error, addinfo);
201 void yf::Zoom::Backend::search_pqf(const char *pqf, Odr_int *hits,
202 int *error, const char **addinfo)
204 m_resultset = ZOOM_connection_search_pqf(m_connection, pqf);
205 get_zoom_error(error, addinfo);
207 *hits = ZOOM_resultset_size(m_resultset);
212 void yf::Zoom::Backend::search_cql(const char *cql, Odr_int *hits,
213 int *error, const char **addinfo)
215 ZOOM_query q = ZOOM_query_create();
217 ZOOM_query_cql(q, cql);
219 m_resultset = ZOOM_connection_search(m_connection, q);
220 ZOOM_query_destroy(q);
221 get_zoom_error(error, addinfo);
223 *hits = ZOOM_resultset_size(m_resultset);
228 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
230 int *error, const char **addinfo)
232 ZOOM_resultset_records(m_resultset, recs, start, number);
233 get_zoom_error(error, addinfo);
236 void yf::Zoom::Backend::set_option(const char *name, const char *value)
238 ZOOM_connection_option_set(m_connection, name, value);
240 ZOOM_resultset_option_set(m_resultset, name, value);
243 const char *yf::Zoom::Backend::get_option(const char *name)
245 return ZOOM_connection_option_get(m_connection, name);
248 yf::Zoom::Searchable::Searchable(CCL_bibset base)
251 use_turbomarc = true;
252 ccl_bibset = ccl_qual_dup(base);
255 yf::Zoom::Searchable::~Searchable()
257 ccl_qual_rm(&ccl_bibset);
260 yf::Zoom::Frontend::Frontend(Impl *impl) :
261 m_p(impl), m_is_virtual(false), m_in_use(true)
265 yf::Zoom::Frontend::~Frontend()
269 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
271 boost::mutex::scoped_lock lock(m_mutex);
273 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
277 it = m_clients.find(package.session());
278 if (it == m_clients.end())
281 if (!it->second->m_in_use)
283 it->second->m_in_use = true;
286 m_cond_session_ready.wait(lock);
288 FrontendPtr f(new Frontend(this));
289 m_clients[package.session()] = f;
294 void yf::Zoom::Impl::release_frontend(mp::Package &package)
296 boost::mutex::scoped_lock lock(m_mutex);
297 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
299 it = m_clients.find(package.session());
300 if (it != m_clients.end())
302 if (package.session().is_closed())
308 it->second->m_in_use = false;
310 m_cond_session_ready.notify_all();
314 yf::Zoom::Impl::Impl()
316 bibset = ccl_qual_mk();
319 yf::Zoom::Impl::~Impl()
321 ccl_qual_rm(&bibset);
324 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus(const xmlNode *ptr1)
326 SearchablePtr notfound;
329 for (ptr1 = ptr1->children; ptr1; ptr1 = ptr1->next)
331 if (ptr1->type != XML_ELEMENT_NODE)
333 if (!strcmp((const char *) ptr1->name, "record"))
335 const xmlNode *ptr2 = ptr1;
336 for (ptr2 = ptr2->children; ptr2; ptr2 = ptr2->next)
338 if (ptr2->type != XML_ELEMENT_NODE)
340 if (!strcmp((const char *) ptr2->name, "layer"))
342 Zoom::SearchablePtr s(new Searchable(bibset));
344 const xmlNode *ptr3 = ptr2;
345 for (ptr3 = ptr3->children; ptr3; ptr3 = ptr3->next)
347 if (ptr3->type != XML_ELEMENT_NODE)
349 if (!strcmp((const char *) ptr3->name,
352 s->authentication = mp::xml::get_text(ptr3);
354 else if (!strcmp((const char *) ptr3->name,
357 s->cfAuth = mp::xml::get_text(ptr3);
359 else if (!strcmp((const char *) ptr3->name,
362 s->cfProxy = mp::xml::get_text(ptr3);
364 else if (!strcmp((const char *) ptr3->name,
367 s->cfSubDb = mp::xml::get_text(ptr3);
369 else if (!strcmp((const char *) ptr3->name, "id"))
371 s->database = mp::xml::get_text(ptr3);
373 else if (!strcmp((const char *) ptr3->name, "zurl"))
375 s->target = mp::xml::get_text(ptr3);
377 else if (!strcmp((const char *) ptr3->name, "sru"))
379 s->sru = mp::xml::get_text(ptr3);
381 else if (!strcmp((const char *) ptr3->name,
384 s->query_encoding = mp::xml::get_text(ptr3);
386 else if (!strcmp((const char *) ptr3->name,
389 s->piggyback = mp::xml::get_bool(ptr3, true);
391 else if (!strcmp((const char *) ptr3->name,
394 s->request_syntax = mp::xml::get_text(ptr3);
396 else if (!strcmp((const char *) ptr3->name,
399 s->element_set = mp::xml::get_text(ptr3);
401 else if (!strcmp((const char *) ptr3->name,
404 s->record_encoding = mp::xml::get_text(ptr3);
406 else if (!strcmp((const char *) ptr3->name,
409 s->transform_xsl_fname = mp::xml::get_text(ptr3);
411 else if (!strcmp((const char *) ptr3->name,
414 ; // useTurboMarc is ignored
416 else if (!strncmp((const char *) ptr3->name,
419 std::string value = mp::xml::get_text(ptr3);
420 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
421 (const char *) ptr3->name + 7);
432 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only)
434 for (ptr = ptr->children; ptr; ptr = ptr->next)
436 if (ptr->type != XML_ELEMENT_NODE)
438 else if (!strcmp((const char *) ptr->name, "torus"))
440 const struct _xmlAttr *attr;
441 for (attr = ptr->properties; attr; attr = attr->next)
443 if (!strcmp((const char *) attr->name, "url"))
444 torus_url = mp::xml::get_text(attr->children);
445 else if (!strcmp((const char *) attr->name, "xsldir"))
446 xsldir = mp::xml::get_text(attr->children);
448 throw mp::filter::FilterException(
449 "Bad attribute " + std::string((const char *)
453 else if (!strcmp((const char *) ptr->name, "cclmap"))
455 const char *addinfo = 0;
456 ccl_xml_config(bibset, ptr, &addinfo);
458 else if (!strcmp((const char *) ptr->name, "fieldmap"))
460 const struct _xmlAttr *attr;
461 std::string ccl_field;
462 std::string cql_field;
463 for (attr = ptr->properties; attr; attr = attr->next)
465 if (!strcmp((const char *) attr->name, "ccl"))
466 ccl_field = mp::xml::get_text(attr->children);
467 else if (!strcmp((const char *) attr->name, "cql"))
468 cql_field = mp::xml::get_text(attr->children);
470 throw mp::filter::FilterException(
471 "Bad attribute " + std::string((const char *)
474 if (cql_field.length())
475 fieldmap[cql_field] = ccl_field;
479 throw mp::filter::FilterException
481 + std::string((const char *) ptr->name)
482 + " in zoom filter");
487 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
488 std::string &database, int *error, const char **addinfo)
490 std::list<BackendPtr>::const_iterator map_it;
491 if (m_backend && m_backend->m_frontend_database == database)
496 std::string torus_db;
497 size_t db_arg_pos = database.find(',');
498 if (db_arg_pos != std::string::npos)
500 torus_db = database.substr(0, db_arg_pos);
501 db_args = database.substr(db_arg_pos+1);
506 xmlDoc *doc = mp::get_searchable(m_p->torus_url, torus_db);
509 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
510 *addinfo = database.c_str();
514 SearchablePtr sptr = m_p->parse_torus(xmlDocGetRootElement(doc));
518 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
519 *addinfo = database.c_str();
524 xsltStylesheetPtr xsp = 0;
525 if (sptr->transform_xsl_fname.length())
529 if (m_p->xsldir.length())
530 fname = m_p->xsldir + "/" + sptr->transform_xsl_fname;
532 fname = sptr->transform_xsl_fname;
533 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
536 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
537 *addinfo = "xmlParseFile failed";
541 xsp = xsltParseStylesheetDoc(xsp_doc);
544 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
545 *addinfo = "xsltParseStylesheetDoc failed";
554 BackendPtr b(new Backend(sptr));
557 b->m_frontend_database = database;
558 std::string authentication = sptr->authentication;
560 b->set_option("timeout", "40");
562 if (sptr->query_encoding.length())
563 b->set_option("rpnCharset", sptr->query_encoding.c_str());
565 if (sptr->cfAuth.length())
567 b->set_option("user", sptr->cfAuth.c_str());
568 if (authentication.length())
570 size_t found = authentication.find('/');
571 if (found != std::string::npos)
573 cf_parm += "user=" + mp::util::uri_encode(authentication.substr(0, found))
574 + "&password=" + mp::util::uri_encode(authentication.substr(found+1));
577 cf_parm += "user=" + mp::util::uri_encode(authentication);
580 else if (authentication.length())
581 b->set_option("user", authentication.c_str());
583 if (sptr->cfProxy.length())
585 if (cf_parm.length())
587 cf_parm += "proxy=" + mp::util::uri_encode(sptr->cfProxy);
589 if (sptr->cfSubDb.length())
591 if (cf_parm.length())
593 cf_parm += "subdatabase=" + mp::util::uri_encode(sptr->cfSubDb);
597 if (sptr->sru.length())
599 url = "http://" + sptr->target;
600 b->set_option("sru", sptr->sru.c_str());
606 if (db_args.length())
607 url += "," + db_args;
608 else if (cf_parm.length())
609 url += "," + cf_parm;
610 yaz_log(YLOG_LOG, "url=%s", url.c_str());
611 b->connect(url, error, addinfo);
619 Z_Records *yf::Zoom::Frontend::get_records(Odr_int start,
620 Odr_int number_to_present,
622 const char **addinfo,
623 Odr_int *number_of_records_returned,
626 Odr_oid *preferredRecordSyntax,
627 const char *element_set_name)
629 *number_of_records_returned = 0;
630 Z_Records *records = 0;
631 bool enable_pz2_transform = false;
633 if (start < 0 || number_to_present <= 0)
636 if (number_to_present > 10000)
637 number_to_present = 10000;
639 ZOOM_record *recs = (ZOOM_record *)
640 odr_malloc(odr, number_to_present * sizeof(*recs));
642 char oid_name_str[OID_STR_MAX];
643 const char *syntax_name = 0;
645 if (preferredRecordSyntax)
647 if (!oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
648 && element_set_name &&
649 !strcmp(element_set_name, "pz2"))
651 if (b->sptr->request_syntax.length())
653 syntax_name = b->sptr->request_syntax.c_str();
654 enable_pz2_transform = true;
660 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
664 b->set_option("preferredRecordSyntax", syntax_name);
666 if (enable_pz2_transform)
668 element_set_name = "F";
669 if (b->sptr->element_set.length())
670 element_set_name = b->sptr->element_set.c_str();
673 b->set_option("elementSetName", element_set_name);
675 b->present(start, number_to_present, recs, error, addinfo);
680 for (i = 0; i < number_to_present; i++)
685 { // only return records if no error and at least one record
686 char *odr_database = odr_strdup(odr,
687 b->m_frontend_database.c_str());
688 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
689 odr_malloc(odr, sizeof(*npl));
690 *number_of_records_returned = i;
691 npl->num_records = i;
692 npl->records = (Z_NamePlusRecord **)
693 odr_malloc(odr, i * sizeof(*npl->records));
694 for (i = 0; i < number_to_present; i++)
696 Z_NamePlusRecord *npr = 0;
698 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
699 &addinfo, 0 /* diagset */);
703 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
706 else if (enable_pz2_transform)
708 char rec_type_str[100];
710 strcpy(rec_type_str, b->sptr->use_turbomarc ?
713 // prevent buffer overflow ...
714 if (b->sptr->record_encoding.length() > 0 &&
715 b->sptr->record_encoding.length() <
716 (sizeof(rec_type_str)-20))
718 strcat(rec_type_str, "; charset=");
719 strcat(rec_type_str, b->sptr->record_encoding.c_str());
723 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
725 if (rec_buf && b->xsp)
727 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
731 rec_res = xsltApplyStylesheet(b->xsp, rec_doc, 0);
734 xsltSaveResultToString((xmlChar **) &rec_buf, &rec_len,
741 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
742 npr->databaseName = odr_database;
743 npr->which = Z_NamePlusRecord_databaseRecord;
744 npr->u.databaseRecord =
745 z_ext_record_xml(odr, rec_buf, rec_len);
749 npr = zget_surrogateDiagRec(
751 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
758 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
761 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
762 npr->databaseName = odr_database;
763 npr->which = Z_NamePlusRecord_databaseRecord;
764 npr->u.databaseRecord = ext;
768 npr = zget_surrogateDiagRec(
770 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
771 "ZOOM_record, type ext");
774 npl->records[i] = npr;
776 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
777 records->which = Z_Records_DBOSD;
778 records->u.databaseOrSurDiagnostics = npl;
783 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
786 struct cql_node *r = 0;
794 std::map<std::string,std::string>::const_iterator it;
795 it = fieldmap.find(cn->u.st.index);
796 if (it == fieldmap.end())
798 if (it->second.length())
799 cn->u.st.index = odr_strdup(odr, it->second.c_str());
805 r = convert_cql_fields(cn->u.boolean.left, odr);
807 r = convert_cql_fields(cn->u.boolean.right, odr);
810 r = convert_cql_fields(cn->u.sort.search, odr);
816 void yf::Zoom::Frontend::handle_search(mp::Package &package)
818 Z_GDU *gdu = package.request().get();
819 Z_APDU *apdu_req = gdu->u.z3950;
820 Z_APDU *apdu_res = 0;
822 Z_SearchRequest *sr = apdu_req->u.searchRequest;
823 if (sr->num_databaseNames != 1)
825 apdu_res = odr.create_searchResponse(
826 apdu_req, YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED, 0);
827 package.response() = apdu_res;
832 const char *addinfo = 0;
833 std::string db(sr->databaseNames[0]);
834 BackendPtr b = get_backend_from_databases(db, &error, &addinfo);
838 odr.create_searchResponse(
839 apdu_req, error, addinfo);
840 package.response() = apdu_res;
844 b->set_option("setname", "default");
847 Z_Query *query = sr->query;
851 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
854 pqf_wrbuf = wrbuf_alloc();
855 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
857 else if (query->which == Z_Query_type_2)
860 ccl_wrbuf = wrbuf_alloc();
861 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
862 query->u.type_2->len);
864 else if (query->which == Z_Query_type_104 &&
865 query->u.type_104->which == Z_External_CQL)
868 const char *cql = query->u.type_104->u.cql;
869 CQL_parser cp = cql_parser_create();
870 int r = cql_parser_string(cp, cql);
873 cql_parser_destroy(cp);
875 odr.create_searchResponse(apdu_req,
876 YAZ_BIB1_MALFORMED_QUERY,
878 package.response() = apdu_res;
881 struct cql_node *cn = cql_parser_result(cp);
882 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
885 // hopefully we are getting a ptr to a index+relation+term node
887 if (cn_error->which == CQL_NODE_ST)
888 addinfo = cn_error->u.st.index;
891 odr.create_searchResponse(apdu_req,
892 YAZ_BIB1_UNSUPP_USE_ATTRIBUTE,
894 package.response() = apdu_res;
899 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
902 ccl_wrbuf = wrbuf_alloc();
903 wrbuf_puts(ccl_wrbuf, ccl_buf);
905 cql_parser_destroy(cp);
909 odr.create_searchResponse(apdu_req,
910 YAZ_BIB1_MALFORMED_QUERY,
911 "CQL to CCL conversion error");
912 package.response() = apdu_res;
919 odr.create_searchResponse(apdu_req, YAZ_BIB1_QUERY_TYPE_UNSUPP, 0);
920 package.response() = apdu_res;
927 assert(pqf_wrbuf == 0);
929 struct ccl_rpn_node *cn;
930 yaz_log(YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
931 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
933 wrbuf_destroy(ccl_wrbuf);
936 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
937 int z3950_diag = YAZ_BIB1_MALFORMED_QUERY;
941 case CCL_ERR_UNKNOWN_QUAL:
942 z3950_diag = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
944 case CCL_ERR_TRUNC_NOT_LEFT:
945 case CCL_ERR_TRUNC_NOT_RIGHT:
946 case CCL_ERR_TRUNC_NOT_BOTH:
947 z3950_diag = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
951 odr.create_searchResponse(apdu_req, z3950_diag, addinfo);
952 package.response() = apdu_res;
955 pqf_wrbuf = wrbuf_alloc();
956 ccl_pquery(pqf_wrbuf, cn);
961 if (b->get_option("sru"))
963 cql_transform_t cqlt = cql_transform_create();
965 WRBUF wrb = wrbuf_alloc();
968 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
969 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
971 cql_transform_close(cqlt);
975 yaz_log(YLOG_LOG, "search CQL: %s", wrbuf_cstr(wrb));
976 b->search_cql(wrbuf_cstr(wrb), &hits, &error, &addinfo);
980 wrbuf_destroy(pqf_wrbuf);
984 odr.create_searchResponse(apdu_req, YAZ_BIB1_MALFORMED_QUERY,
985 "can not convert from RPN to CQL");
986 package.response() = apdu_res;
992 yaz_log(YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
993 b->search_pqf(wrbuf_cstr(pqf_wrbuf), &hits, &error, &addinfo);
994 wrbuf_destroy(pqf_wrbuf);
998 const char *element_set_name = 0;
999 Odr_int number_to_present = 0;
1001 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1003 Odr_int number_of_records_returned = 0;
1004 Z_Records *records = get_records(
1005 0, number_to_present, &error, &addinfo,
1006 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1008 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1011 apdu_res->u.searchResponse->records = records;
1012 apdu_res->u.searchResponse->numberOfRecordsReturned =
1013 odr_intdup(odr, number_of_records_returned);
1015 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1016 package.response() = apdu_res;
1019 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1021 Z_GDU *gdu = package.request().get();
1022 Z_APDU *apdu_req = gdu->u.z3950;
1023 Z_APDU *apdu_res = 0;
1024 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1029 package.response() = odr.create_presentResponse(
1030 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1033 const char *element_set_name = 0;
1034 Z_RecordComposition *comp = pr->recordComposition;
1035 if (comp && comp->which != Z_RecordComp_simple)
1037 package.response() = odr.create_presentResponse(
1039 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1042 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1043 element_set_name = comp->u.simple->u.generic;
1044 Odr_int number_of_records_returned = 0;
1046 const char *addinfo = 0;
1047 Z_Records *records = get_records(
1048 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1049 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1050 pr->preferredRecordSyntax, element_set_name);
1052 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1055 apdu_res->u.presentResponse->records = records;
1056 apdu_res->u.presentResponse->numberOfRecordsReturned =
1057 odr_intdup(odr, number_of_records_returned);
1059 package.response() = apdu_res;
1062 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1064 Z_GDU *gdu = package.request().get();
1067 else if (gdu->which == Z_GDU_Z3950)
1069 Z_APDU *apdu_req = gdu->u.z3950;
1070 if (apdu_req->which == Z_APDU_initRequest)
1073 package.response() = odr.create_close(
1075 Z_Close_protocolError,
1078 else if (apdu_req->which == Z_APDU_searchRequest)
1080 handle_search(package);
1082 else if (apdu_req->which == Z_APDU_presentRequest)
1084 handle_present(package);
1089 package.response() = odr.create_close(
1091 Z_Close_protocolError,
1092 "zoom filter cannot handle this APDU");
1093 package.session().close();
1098 package.session().close();
1102 void yf::Zoom::Impl::process(mp::Package &package)
1104 FrontendPtr f = get_frontend(package);
1105 Z_GDU *gdu = package.request().get();
1107 if (f->m_is_virtual)
1109 f->handle_package(package);
1111 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1114 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1115 f->m_init_gdu = gdu;
1118 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1119 Z_InitResponse *resp = apdu->u.initResponse;
1122 static const int masks[] = {
1127 for (i = 0; masks[i] != -1; i++)
1128 if (ODR_MASK_GET(req->options, masks[i]))
1129 ODR_MASK_SET(resp->options, masks[i]);
1131 static const int versions[] = {
1132 Z_ProtocolVersion_1,
1133 Z_ProtocolVersion_2,
1134 Z_ProtocolVersion_3,
1137 for (i = 0; versions[i] != -1; i++)
1138 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1139 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1143 *resp->preferredMessageSize = *req->preferredMessageSize;
1144 *resp->maximumRecordSize = *req->maximumRecordSize;
1146 package.response() = apdu;
1147 f->m_is_virtual = true;
1152 release_frontend(package);
1156 static mp::filter::Base* filter_creator()
1158 return new mp::filter::Zoom;
1162 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1173 * c-file-style: "Stroustrup"
1174 * indent-tabs-mode: nil
1176 * vim: shiftwidth=4 tabstop=8 expandtab