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/rpn2solr.h>
37 #include <yaz/pquery.h>
39 #include <yaz/oid_db.h>
40 #include <yaz/diagbib1.h>
43 #include <yaz/querytowrbuf.h>
45 namespace mp = metaproxy_1;
46 namespace yf = mp::filter;
48 namespace metaproxy_1 {
50 struct Zoom::Searchable : boost::noncopyable {
51 std::string authentication;
57 std::string query_encoding;
59 std::string request_syntax;
60 std::string element_set;
61 std::string record_encoding;
62 std::string transform_xsl_fname;
65 CCL_bibset ccl_bibset;
66 Searchable(CCL_bibset base);
69 class Zoom::Backend : boost::noncopyable {
71 friend class Frontend;
73 ZOOM_connection m_connection;
74 ZOOM_resultset m_resultset;
75 std::string m_frontend_database;
77 xsltStylesheetPtr xsp;
79 Backend(SearchablePtr sptr);
81 void connect(std::string zurl, int *error, const char **addinfo);
82 void search_pqf(const char *pqf, Odr_int *hits,
83 int *error, const char **addinfo);
84 void search_cql(const char *cql, Odr_int *hits,
85 int *error, const char **addinfo);
86 void present(Odr_int start, Odr_int number, ZOOM_record *recs,
87 int *error, const char **addinfo);
88 void set_option(const char *name, const char *value);
89 const char *get_option(const char *name);
90 void get_zoom_error(int *error, const char **addinfo);
92 class Zoom::Frontend : boost::noncopyable {
97 yazpp_1::GDU m_init_gdu;
99 void handle_package(mp::Package &package);
100 void handle_search(mp::Package &package);
101 void handle_present(mp::Package &package);
102 BackendPtr get_backend_from_databases(std::string &database,
104 const char **addinfo);
105 Z_Records *get_records(Odr_int start,
106 Odr_int number_to_present,
108 const char **addinfo,
109 Odr_int *number_of_records_returned,
110 ODR odr, BackendPtr b,
111 Odr_oid *preferredRecordSyntax,
112 const char *element_set_name);
114 Frontend(Impl *impl);
118 friend class Frontend;
122 void process(metaproxy_1::Package & package);
123 void configure(const xmlNode * ptr, bool test_only);
125 FrontendPtr get_frontend(mp::Package &package);
126 void release_frontend(mp::Package &package);
127 SearchablePtr parse_torus(const xmlNode *ptr);
128 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
129 std::map<mp::Session, FrontendPtr> m_clients;
130 boost::mutex m_mutex;
131 boost::condition m_cond_session_ready;
132 std::string torus_url;
133 std::map<std::string,std::string> fieldmap;
140 // define Pimpl wrapper forwarding to Impl
142 yf::Zoom::Zoom() : m_p(new Impl)
147 { // must have a destructor because of boost::scoped_ptr
150 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only)
152 m_p->configure(xmlnode, test_only);
155 void yf::Zoom::process(mp::Package &package) const
157 m_p->process(package);
161 // define Implementation stuff
163 yf::Zoom::Backend::Backend(SearchablePtr ptr) : sptr(ptr)
165 m_connection = ZOOM_connection_create(0);
170 yf::Zoom::Backend::~Backend()
173 xsltFreeStylesheet(xsp);
174 ZOOM_connection_destroy(m_connection);
175 ZOOM_resultset_destroy(m_resultset);
179 void yf::Zoom::Backend::get_zoom_error(int *error, const char **addinfo)
182 *error = ZOOM_connection_error(m_connection, &msg, addinfo);
185 if (*error >= ZOOM_ERROR_CONNECT)
187 // turn ZOOM diagnostic into a Bib-1 2: with addinfo=zoom err msg
188 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
195 void yf::Zoom::Backend::connect(std::string zurl,
196 int *error, const char **addinfo)
198 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
199 get_zoom_error(error, addinfo);
202 void yf::Zoom::Backend::search_pqf(const char *pqf, Odr_int *hits,
203 int *error, const char **addinfo)
205 m_resultset = ZOOM_connection_search_pqf(m_connection, pqf);
206 get_zoom_error(error, addinfo);
208 *hits = ZOOM_resultset_size(m_resultset);
213 void yf::Zoom::Backend::search_cql(const char *cql, Odr_int *hits,
214 int *error, const char **addinfo)
216 ZOOM_query q = ZOOM_query_create();
218 ZOOM_query_cql(q, cql);
220 m_resultset = ZOOM_connection_search(m_connection, q);
221 ZOOM_query_destroy(q);
222 get_zoom_error(error, addinfo);
224 *hits = ZOOM_resultset_size(m_resultset);
229 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
231 int *error, const char **addinfo)
233 ZOOM_resultset_records(m_resultset, recs, start, number);
234 get_zoom_error(error, addinfo);
237 void yf::Zoom::Backend::set_option(const char *name, const char *value)
239 ZOOM_connection_option_set(m_connection, name, value);
241 ZOOM_resultset_option_set(m_resultset, name, value);
244 const char *yf::Zoom::Backend::get_option(const char *name)
246 return ZOOM_connection_option_get(m_connection, name);
249 yf::Zoom::Searchable::Searchable(CCL_bibset base)
252 use_turbomarc = true;
253 ccl_bibset = ccl_qual_dup(base);
256 yf::Zoom::Searchable::~Searchable()
258 ccl_qual_rm(&ccl_bibset);
261 yf::Zoom::Frontend::Frontend(Impl *impl) :
262 m_p(impl), m_is_virtual(false), m_in_use(true)
266 yf::Zoom::Frontend::~Frontend()
270 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
272 boost::mutex::scoped_lock lock(m_mutex);
274 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
278 it = m_clients.find(package.session());
279 if (it == m_clients.end())
282 if (!it->second->m_in_use)
284 it->second->m_in_use = true;
287 m_cond_session_ready.wait(lock);
289 FrontendPtr f(new Frontend(this));
290 m_clients[package.session()] = f;
295 void yf::Zoom::Impl::release_frontend(mp::Package &package)
297 boost::mutex::scoped_lock lock(m_mutex);
298 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
300 it = m_clients.find(package.session());
301 if (it != m_clients.end())
303 if (package.session().is_closed())
309 it->second->m_in_use = false;
311 m_cond_session_ready.notify_all();
315 yf::Zoom::Impl::Impl()
317 bibset = ccl_qual_mk();
320 yf::Zoom::Impl::~Impl()
322 ccl_qual_rm(&bibset);
325 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus(const xmlNode *ptr1)
327 SearchablePtr notfound;
330 for (ptr1 = ptr1->children; ptr1; ptr1 = ptr1->next)
332 if (ptr1->type != XML_ELEMENT_NODE)
334 if (!strcmp((const char *) ptr1->name, "record"))
336 const xmlNode *ptr2 = ptr1;
337 for (ptr2 = ptr2->children; ptr2; ptr2 = ptr2->next)
339 if (ptr2->type != XML_ELEMENT_NODE)
341 if (!strcmp((const char *) ptr2->name, "layer"))
343 Zoom::SearchablePtr s(new Searchable(bibset));
345 const xmlNode *ptr3 = ptr2;
346 for (ptr3 = ptr3->children; ptr3; ptr3 = ptr3->next)
348 if (ptr3->type != XML_ELEMENT_NODE)
350 if (!strcmp((const char *) ptr3->name,
353 s->authentication = mp::xml::get_text(ptr3);
355 else if (!strcmp((const char *) ptr3->name,
358 s->cfAuth = mp::xml::get_text(ptr3);
360 else if (!strcmp((const char *) ptr3->name,
363 s->cfProxy = mp::xml::get_text(ptr3);
365 else if (!strcmp((const char *) ptr3->name,
368 s->cfSubDb = mp::xml::get_text(ptr3);
370 else if (!strcmp((const char *) ptr3->name, "id"))
372 s->database = mp::xml::get_text(ptr3);
374 else if (!strcmp((const char *) ptr3->name, "zurl"))
376 s->target = mp::xml::get_text(ptr3);
378 else if (!strcmp((const char *) ptr3->name, "sru"))
380 s->sru = mp::xml::get_text(ptr3);
382 else if (!strcmp((const char *) ptr3->name,
385 s->query_encoding = mp::xml::get_text(ptr3);
387 else if (!strcmp((const char *) ptr3->name,
390 s->piggyback = mp::xml::get_bool(ptr3, true);
392 else if (!strcmp((const char *) ptr3->name,
395 s->request_syntax = mp::xml::get_text(ptr3);
397 else if (!strcmp((const char *) ptr3->name,
400 s->element_set = mp::xml::get_text(ptr3);
402 else if (!strcmp((const char *) ptr3->name,
405 s->record_encoding = mp::xml::get_text(ptr3);
407 else if (!strcmp((const char *) ptr3->name,
410 s->transform_xsl_fname = mp::xml::get_text(ptr3);
412 else if (!strcmp((const char *) ptr3->name,
415 ; // useTurboMarc is ignored
417 else if (!strncmp((const char *) ptr3->name,
420 std::string value = mp::xml::get_text(ptr3);
421 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
422 (const char *) ptr3->name + 7);
433 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only)
435 for (ptr = ptr->children; ptr; ptr = ptr->next)
437 if (ptr->type != XML_ELEMENT_NODE)
439 else if (!strcmp((const char *) ptr->name, "torus"))
441 const struct _xmlAttr *attr;
442 for (attr = ptr->properties; attr; attr = attr->next)
444 if (!strcmp((const char *) attr->name, "url"))
445 torus_url = mp::xml::get_text(attr->children);
446 else if (!strcmp((const char *) attr->name, "xsldir"))
447 xsldir = mp::xml::get_text(attr->children);
449 throw mp::filter::FilterException(
450 "Bad attribute " + std::string((const char *)
454 else if (!strcmp((const char *) ptr->name, "cclmap"))
456 const char *addinfo = 0;
457 ccl_xml_config(bibset, ptr, &addinfo);
459 else if (!strcmp((const char *) ptr->name, "fieldmap"))
461 const struct _xmlAttr *attr;
462 std::string ccl_field;
463 std::string cql_field;
464 for (attr = ptr->properties; attr; attr = attr->next)
466 if (!strcmp((const char *) attr->name, "ccl"))
467 ccl_field = mp::xml::get_text(attr->children);
468 else if (!strcmp((const char *) attr->name, "cql"))
469 cql_field = mp::xml::get_text(attr->children);
471 throw mp::filter::FilterException(
472 "Bad attribute " + std::string((const char *)
475 if (cql_field.length())
476 fieldmap[cql_field] = ccl_field;
480 throw mp::filter::FilterException
482 + std::string((const char *) ptr->name)
483 + " in zoom filter");
488 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
489 std::string &database, int *error, const char **addinfo)
491 std::list<BackendPtr>::const_iterator map_it;
492 if (m_backend && m_backend->m_frontend_database == database)
497 std::string torus_db;
498 size_t db_arg_pos = database.find(',');
499 if (db_arg_pos != std::string::npos)
501 torus_db = database.substr(0, db_arg_pos);
502 db_args = database.substr(db_arg_pos+1);
507 xmlDoc *doc = mp::get_searchable(m_p->torus_url, torus_db);
510 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
511 *addinfo = database.c_str();
515 SearchablePtr sptr = m_p->parse_torus(xmlDocGetRootElement(doc));
519 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
520 *addinfo = database.c_str();
525 xsltStylesheetPtr xsp = 0;
526 if (sptr->transform_xsl_fname.length())
530 if (m_p->xsldir.length())
531 fname = m_p->xsldir + "/" + sptr->transform_xsl_fname;
533 fname = sptr->transform_xsl_fname;
534 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
537 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
538 *addinfo = "xmlParseFile failed";
542 xsp = xsltParseStylesheetDoc(xsp_doc);
545 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
546 *addinfo = "xsltParseStylesheetDoc failed";
555 BackendPtr b(new Backend(sptr));
558 b->m_frontend_database = database;
559 std::string authentication = sptr->authentication;
561 b->set_option("timeout", "40");
563 if (sptr->query_encoding.length())
564 b->set_option("rpnCharset", sptr->query_encoding.c_str());
566 if (sptr->cfAuth.length())
568 b->set_option("user", sptr->cfAuth.c_str());
569 if (authentication.length())
571 size_t found = authentication.find('/');
572 if (found != std::string::npos)
574 cf_parm += "user=" + mp::util::uri_encode(authentication.substr(0, found))
575 + "&password=" + mp::util::uri_encode(authentication.substr(found+1));
578 cf_parm += "user=" + mp::util::uri_encode(authentication);
581 else if (authentication.length())
582 b->set_option("user", authentication.c_str());
584 if (sptr->cfProxy.length())
586 if (cf_parm.length())
588 cf_parm += "proxy=" + mp::util::uri_encode(sptr->cfProxy);
590 if (sptr->cfSubDb.length())
592 if (cf_parm.length())
594 cf_parm += "subdatabase=" + mp::util::uri_encode(sptr->cfSubDb);
598 if (sptr->sru.length())
600 url = "http://" + sptr->target;
601 b->set_option("sru", sptr->sru.c_str());
607 if (db_args.length())
608 url += "," + db_args;
609 else if (cf_parm.length())
610 url += "," + cf_parm;
611 yaz_log(YLOG_LOG, "url=%s", url.c_str());
612 b->connect(url, error, addinfo);
620 Z_Records *yf::Zoom::Frontend::get_records(Odr_int start,
621 Odr_int number_to_present,
623 const char **addinfo,
624 Odr_int *number_of_records_returned,
627 Odr_oid *preferredRecordSyntax,
628 const char *element_set_name)
630 *number_of_records_returned = 0;
631 Z_Records *records = 0;
632 bool enable_pz2_transform = false;
634 if (start < 0 || number_to_present <= 0)
637 if (number_to_present > 10000)
638 number_to_present = 10000;
640 ZOOM_record *recs = (ZOOM_record *)
641 odr_malloc(odr, number_to_present * sizeof(*recs));
643 char oid_name_str[OID_STR_MAX];
644 const char *syntax_name = 0;
646 if (preferredRecordSyntax)
648 if (!oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
649 && element_set_name &&
650 !strcmp(element_set_name, "pz2"))
652 if (b->sptr->request_syntax.length())
654 syntax_name = b->sptr->request_syntax.c_str();
655 enable_pz2_transform = true;
661 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
665 b->set_option("preferredRecordSyntax", syntax_name);
667 if (enable_pz2_transform)
669 element_set_name = "F";
670 if (b->sptr->element_set.length())
671 element_set_name = b->sptr->element_set.c_str();
674 b->set_option("elementSetName", element_set_name);
676 b->present(start, number_to_present, recs, error, addinfo);
681 for (i = 0; i < number_to_present; i++)
686 { // only return records if no error and at least one record
687 char *odr_database = odr_strdup(odr,
688 b->m_frontend_database.c_str());
689 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
690 odr_malloc(odr, sizeof(*npl));
691 *number_of_records_returned = i;
692 npl->num_records = i;
693 npl->records = (Z_NamePlusRecord **)
694 odr_malloc(odr, i * sizeof(*npl->records));
695 for (i = 0; i < number_to_present; i++)
697 Z_NamePlusRecord *npr = 0;
699 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
700 &addinfo, 0 /* diagset */);
704 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
707 else if (enable_pz2_transform)
709 char rec_type_str[100];
711 strcpy(rec_type_str, b->sptr->use_turbomarc ?
714 // prevent buffer overflow ...
715 if (b->sptr->record_encoding.length() > 0 &&
716 b->sptr->record_encoding.length() <
717 (sizeof(rec_type_str)-20))
719 strcat(rec_type_str, "; charset=");
720 strcat(rec_type_str, b->sptr->record_encoding.c_str());
724 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
726 if (rec_buf && b->xsp)
728 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
732 rec_res = xsltApplyStylesheet(b->xsp, rec_doc, 0);
735 xsltSaveResultToString((xmlChar **) &rec_buf, &rec_len,
742 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
743 npr->databaseName = odr_database;
744 npr->which = Z_NamePlusRecord_databaseRecord;
745 npr->u.databaseRecord =
746 z_ext_record_xml(odr, rec_buf, rec_len);
750 npr = zget_surrogateDiagRec(
752 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
759 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
762 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
763 npr->databaseName = odr_database;
764 npr->which = Z_NamePlusRecord_databaseRecord;
765 npr->u.databaseRecord = ext;
769 npr = zget_surrogateDiagRec(
771 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
772 "ZOOM_record, type ext");
775 npl->records[i] = npr;
777 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
778 records->which = Z_Records_DBOSD;
779 records->u.databaseOrSurDiagnostics = npl;
784 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
787 struct cql_node *r = 0;
795 std::map<std::string,std::string>::const_iterator it;
796 it = fieldmap.find(cn->u.st.index);
797 if (it == fieldmap.end())
799 if (it->second.length())
800 cn->u.st.index = odr_strdup(odr, it->second.c_str());
806 r = convert_cql_fields(cn->u.boolean.left, odr);
808 r = convert_cql_fields(cn->u.boolean.right, odr);
811 r = convert_cql_fields(cn->u.sort.search, odr);
817 void yf::Zoom::Frontend::handle_search(mp::Package &package)
819 Z_GDU *gdu = package.request().get();
820 Z_APDU *apdu_req = gdu->u.z3950;
821 Z_APDU *apdu_res = 0;
823 Z_SearchRequest *sr = apdu_req->u.searchRequest;
824 if (sr->num_databaseNames != 1)
826 apdu_res = odr.create_searchResponse(
827 apdu_req, YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED, 0);
828 package.response() = apdu_res;
833 const char *addinfo = 0;
834 std::string db(sr->databaseNames[0]);
835 BackendPtr b = get_backend_from_databases(db, &error, &addinfo);
839 odr.create_searchResponse(
840 apdu_req, error, addinfo);
841 package.response() = apdu_res;
845 b->set_option("setname", "default");
848 Z_Query *query = sr->query;
852 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
855 pqf_wrbuf = wrbuf_alloc();
856 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
858 else if (query->which == Z_Query_type_2)
861 ccl_wrbuf = wrbuf_alloc();
862 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
863 query->u.type_2->len);
865 else if (query->which == Z_Query_type_104 &&
866 query->u.type_104->which == Z_External_CQL)
869 const char *cql = query->u.type_104->u.cql;
870 CQL_parser cp = cql_parser_create();
871 int r = cql_parser_string(cp, cql);
874 cql_parser_destroy(cp);
876 odr.create_searchResponse(apdu_req,
877 YAZ_BIB1_MALFORMED_QUERY,
879 package.response() = apdu_res;
882 struct cql_node *cn = cql_parser_result(cp);
883 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
886 // hopefully we are getting a ptr to a index+relation+term node
888 if (cn_error->which == CQL_NODE_ST)
889 addinfo = cn_error->u.st.index;
892 odr.create_searchResponse(apdu_req,
893 YAZ_BIB1_UNSUPP_USE_ATTRIBUTE,
895 package.response() = apdu_res;
900 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
903 ccl_wrbuf = wrbuf_alloc();
904 wrbuf_puts(ccl_wrbuf, ccl_buf);
906 cql_parser_destroy(cp);
910 odr.create_searchResponse(apdu_req,
911 YAZ_BIB1_MALFORMED_QUERY,
912 "CQL to CCL conversion error");
913 package.response() = apdu_res;
920 odr.create_searchResponse(apdu_req, YAZ_BIB1_QUERY_TYPE_UNSUPP, 0);
921 package.response() = apdu_res;
928 assert(pqf_wrbuf == 0);
930 struct ccl_rpn_node *cn;
931 yaz_log(YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
932 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
934 wrbuf_destroy(ccl_wrbuf);
937 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
938 int z3950_diag = YAZ_BIB1_MALFORMED_QUERY;
942 case CCL_ERR_UNKNOWN_QUAL:
943 z3950_diag = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
945 case CCL_ERR_TRUNC_NOT_LEFT:
946 case CCL_ERR_TRUNC_NOT_RIGHT:
947 case CCL_ERR_TRUNC_NOT_BOTH:
948 z3950_diag = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
952 odr.create_searchResponse(apdu_req, z3950_diag, addinfo);
953 package.response() = apdu_res;
956 pqf_wrbuf = wrbuf_alloc();
957 ccl_pquery(pqf_wrbuf, cn);
962 if (b->get_option("sru"))
966 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
967 WRBUF wrb = wrbuf_alloc();
969 if (!strcmp(b->get_option("sru"), "solr"))
971 solr_transform_t cqlt = solr_transform_create();
973 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
975 solr_transform_close(cqlt);
979 cql_transform_t cqlt = cql_transform_create();
981 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
983 cql_transform_close(cqlt);
987 yaz_log(YLOG_LOG, "search CQL: %s", wrbuf_cstr(wrb));
988 b->search_cql(wrbuf_cstr(wrb), &hits, &error, &addinfo);
992 wrbuf_destroy(pqf_wrbuf);
996 odr.create_searchResponse(apdu_req, YAZ_BIB1_MALFORMED_QUERY,
997 "can not convert from RPN to CQL/SOLR");
998 package.response() = apdu_res;
1004 yaz_log(YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
1005 b->search_pqf(wrbuf_cstr(pqf_wrbuf), &hits, &error, &addinfo);
1006 wrbuf_destroy(pqf_wrbuf);
1010 const char *element_set_name = 0;
1011 Odr_int number_to_present = 0;
1013 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1015 Odr_int number_of_records_returned = 0;
1016 Z_Records *records = get_records(
1017 0, number_to_present, &error, &addinfo,
1018 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1020 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1023 apdu_res->u.searchResponse->records = records;
1024 apdu_res->u.searchResponse->numberOfRecordsReturned =
1025 odr_intdup(odr, number_of_records_returned);
1027 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1028 package.response() = apdu_res;
1031 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1033 Z_GDU *gdu = package.request().get();
1034 Z_APDU *apdu_req = gdu->u.z3950;
1035 Z_APDU *apdu_res = 0;
1036 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1041 package.response() = odr.create_presentResponse(
1042 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1045 const char *element_set_name = 0;
1046 Z_RecordComposition *comp = pr->recordComposition;
1047 if (comp && comp->which != Z_RecordComp_simple)
1049 package.response() = odr.create_presentResponse(
1051 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1054 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1055 element_set_name = comp->u.simple->u.generic;
1056 Odr_int number_of_records_returned = 0;
1058 const char *addinfo = 0;
1059 Z_Records *records = get_records(
1060 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1061 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1062 pr->preferredRecordSyntax, element_set_name);
1064 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1067 apdu_res->u.presentResponse->records = records;
1068 apdu_res->u.presentResponse->numberOfRecordsReturned =
1069 odr_intdup(odr, number_of_records_returned);
1071 package.response() = apdu_res;
1074 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1076 Z_GDU *gdu = package.request().get();
1079 else if (gdu->which == Z_GDU_Z3950)
1081 Z_APDU *apdu_req = gdu->u.z3950;
1082 if (apdu_req->which == Z_APDU_initRequest)
1085 package.response() = odr.create_close(
1087 Z_Close_protocolError,
1090 else if (apdu_req->which == Z_APDU_searchRequest)
1092 handle_search(package);
1094 else if (apdu_req->which == Z_APDU_presentRequest)
1096 handle_present(package);
1101 package.response() = odr.create_close(
1103 Z_Close_protocolError,
1104 "zoom filter cannot handle this APDU");
1105 package.session().close();
1110 package.session().close();
1114 void yf::Zoom::Impl::process(mp::Package &package)
1116 FrontendPtr f = get_frontend(package);
1117 Z_GDU *gdu = package.request().get();
1119 if (f->m_is_virtual)
1121 f->handle_package(package);
1123 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1126 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1127 f->m_init_gdu = gdu;
1130 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1131 Z_InitResponse *resp = apdu->u.initResponse;
1134 static const int masks[] = {
1139 for (i = 0; masks[i] != -1; i++)
1140 if (ODR_MASK_GET(req->options, masks[i]))
1141 ODR_MASK_SET(resp->options, masks[i]);
1143 static const int versions[] = {
1144 Z_ProtocolVersion_1,
1145 Z_ProtocolVersion_2,
1146 Z_ProtocolVersion_3,
1149 for (i = 0; versions[i] != -1; i++)
1150 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1151 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1155 *resp->preferredMessageSize = *req->preferredMessageSize;
1156 *resp->maximumRecordSize = *req->maximumRecordSize;
1158 package.response() = apdu;
1159 f->m_is_virtual = true;
1164 release_frontend(package);
1168 static mp::filter::Base* filter_creator()
1170 return new mp::filter::Zoom;
1174 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1185 * c-file-style: "Stroustrup"
1186 * indent-tabs-mode: nil
1188 * vim: shiftwidth=4 tabstop=8 expandtab