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 void configure_local_records(const xmlNode * ptr, bool test_only);
126 FrontendPtr get_frontend(mp::Package &package);
127 void release_frontend(mp::Package &package);
128 SearchablePtr parse_torus_record(const xmlNode *ptr);
129 struct cql_node *convert_cql_fields(struct cql_node *cn, ODR odr);
130 std::map<mp::Session, FrontendPtr> m_clients;
131 boost::mutex m_mutex;
132 boost::condition m_cond_session_ready;
133 std::string torus_url;
134 std::map<std::string,std::string> fieldmap;
137 std::map<std::string,SearchablePtr> s_map;
142 // define Pimpl wrapper forwarding to Impl
144 yf::Zoom::Zoom() : m_p(new Impl)
149 { // must have a destructor because of boost::scoped_ptr
152 void yf::Zoom::configure(const xmlNode *xmlnode, bool test_only)
154 m_p->configure(xmlnode, test_only);
157 void yf::Zoom::process(mp::Package &package) const
159 m_p->process(package);
163 // define Implementation stuff
165 yf::Zoom::Backend::Backend(SearchablePtr ptr) : sptr(ptr)
167 m_connection = ZOOM_connection_create(0);
172 yf::Zoom::Backend::~Backend()
175 xsltFreeStylesheet(xsp);
176 ZOOM_connection_destroy(m_connection);
177 ZOOM_resultset_destroy(m_resultset);
181 void yf::Zoom::Backend::get_zoom_error(int *error, const char **addinfo)
184 *error = ZOOM_connection_error(m_connection, &msg, addinfo);
187 if (*error >= ZOOM_ERROR_CONNECT)
189 // turn ZOOM diagnostic into a Bib-1 2: with addinfo=zoom err msg
190 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
197 void yf::Zoom::Backend::connect(std::string zurl,
198 int *error, const char **addinfo)
200 ZOOM_connection_connect(m_connection, zurl.c_str(), 0);
201 get_zoom_error(error, addinfo);
204 void yf::Zoom::Backend::search_pqf(const char *pqf, Odr_int *hits,
205 int *error, const char **addinfo)
207 m_resultset = ZOOM_connection_search_pqf(m_connection, pqf);
208 get_zoom_error(error, addinfo);
210 *hits = ZOOM_resultset_size(m_resultset);
215 void yf::Zoom::Backend::search_cql(const char *cql, Odr_int *hits,
216 int *error, const char **addinfo)
218 ZOOM_query q = ZOOM_query_create();
220 ZOOM_query_cql(q, cql);
222 m_resultset = ZOOM_connection_search(m_connection, q);
223 ZOOM_query_destroy(q);
224 get_zoom_error(error, addinfo);
226 *hits = ZOOM_resultset_size(m_resultset);
231 void yf::Zoom::Backend::present(Odr_int start, Odr_int number,
233 int *error, const char **addinfo)
235 ZOOM_resultset_records(m_resultset, recs, start, number);
236 get_zoom_error(error, addinfo);
239 void yf::Zoom::Backend::set_option(const char *name, const char *value)
241 ZOOM_connection_option_set(m_connection, name, value);
243 ZOOM_resultset_option_set(m_resultset, name, value);
246 const char *yf::Zoom::Backend::get_option(const char *name)
248 return ZOOM_connection_option_get(m_connection, name);
251 yf::Zoom::Searchable::Searchable(CCL_bibset base)
254 use_turbomarc = true;
255 ccl_bibset = ccl_qual_dup(base);
258 yf::Zoom::Searchable::~Searchable()
260 ccl_qual_rm(&ccl_bibset);
263 yf::Zoom::Frontend::Frontend(Impl *impl) :
264 m_p(impl), m_is_virtual(false), m_in_use(true)
268 yf::Zoom::Frontend::~Frontend()
272 yf::Zoom::FrontendPtr yf::Zoom::Impl::get_frontend(mp::Package &package)
274 boost::mutex::scoped_lock lock(m_mutex);
276 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
280 it = m_clients.find(package.session());
281 if (it == m_clients.end())
284 if (!it->second->m_in_use)
286 it->second->m_in_use = true;
289 m_cond_session_ready.wait(lock);
291 FrontendPtr f(new Frontend(this));
292 m_clients[package.session()] = f;
297 void yf::Zoom::Impl::release_frontend(mp::Package &package)
299 boost::mutex::scoped_lock lock(m_mutex);
300 std::map<mp::Session,yf::Zoom::FrontendPtr>::iterator it;
302 it = m_clients.find(package.session());
303 if (it != m_clients.end())
305 if (package.session().is_closed())
311 it->second->m_in_use = false;
313 m_cond_session_ready.notify_all();
317 yf::Zoom::Impl::Impl()
319 bibset = ccl_qual_mk();
322 yf::Zoom::Impl::~Impl()
324 ccl_qual_rm(&bibset);
327 yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
329 Zoom::SearchablePtr s(new Searchable(bibset));
331 for (ptr = ptr->children; ptr; ptr = ptr->next)
333 if (ptr->type != XML_ELEMENT_NODE)
335 if (!strcmp((const char *) ptr->name, "layer"))
337 else if (!strcmp((const char *) ptr->name,
340 s->authentication = mp::xml::get_text(ptr);
342 else if (!strcmp((const char *) ptr->name,
345 s->cfAuth = mp::xml::get_text(ptr);
347 else if (!strcmp((const char *) ptr->name,
350 s->cfProxy = mp::xml::get_text(ptr);
352 else if (!strcmp((const char *) ptr->name,
355 s->cfSubDb = mp::xml::get_text(ptr);
357 else if (!strcmp((const char *) ptr->name, "udb"))
359 s->udb = mp::xml::get_text(ptr);
361 else if (!strcmp((const char *) ptr->name, "zurl"))
363 s->target = mp::xml::get_text(ptr);
365 else if (!strcmp((const char *) ptr->name, "sru"))
367 s->sru = mp::xml::get_text(ptr);
369 else if (!strcmp((const char *) ptr->name,
372 s->query_encoding = mp::xml::get_text(ptr);
374 else if (!strcmp((const char *) ptr->name,
377 s->piggyback = mp::xml::get_bool(ptr, true);
379 else if (!strcmp((const char *) ptr->name,
382 s->request_syntax = mp::xml::get_text(ptr);
384 else if (!strcmp((const char *) ptr->name,
387 s->element_set = mp::xml::get_text(ptr);
389 else if (!strcmp((const char *) ptr->name,
392 s->record_encoding = mp::xml::get_text(ptr);
394 else if (!strcmp((const char *) ptr->name,
397 s->transform_xsl_fname = mp::xml::get_text(ptr);
399 else if (!strcmp((const char *) ptr->name,
402 ; // useTurboMarc is ignored
404 else if (!strncmp((const char *) ptr->name,
407 std::string value = mp::xml::get_text(ptr);
408 ccl_qual_fitem(s->ccl_bibset, value.c_str(),
409 (const char *) ptr->name + 7);
415 void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
417 while (ptr && ptr->type != XML_ELEMENT_NODE)
422 if (!strcmp((const char *) ptr->name, "records"))
424 for (ptr = ptr->children; ptr; ptr = ptr->next)
426 if (ptr->type != XML_ELEMENT_NODE)
428 if (!strcmp((const char *) ptr->name, "record"))
430 SearchablePtr s = parse_torus_record(ptr);
433 std::string udb = s->udb;
438 throw mp::filter::FilterException
439 ("No udb for local torus record");
445 throw mp::filter::FilterException
447 + std::string((const char *) ptr->name)
448 + " in zoom filter inside element "
455 throw mp::filter::FilterException
457 + std::string((const char *) ptr->name)
458 + " in zoom filter inside element <torus>");
463 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only)
465 for (ptr = ptr->children; ptr; ptr = ptr->next)
467 if (ptr->type != XML_ELEMENT_NODE)
469 else if (!strcmp((const char *) ptr->name, "torus"))
471 const struct _xmlAttr *attr;
472 for (attr = ptr->properties; attr; attr = attr->next)
474 if (!strcmp((const char *) attr->name, "url"))
475 torus_url = mp::xml::get_text(attr->children);
476 else if (!strcmp((const char *) attr->name, "xsldir"))
477 xsldir = mp::xml::get_text(attr->children);
479 throw mp::filter::FilterException(
480 "Bad attribute " + std::string((const char *)
483 configure_local_records(ptr->children, test_only);
485 else if (!strcmp((const char *) ptr->name, "cclmap"))
487 const char *addinfo = 0;
488 ccl_xml_config(bibset, ptr, &addinfo);
490 else if (!strcmp((const char *) ptr->name, "fieldmap"))
492 const struct _xmlAttr *attr;
493 std::string ccl_field;
494 std::string cql_field;
495 for (attr = ptr->properties; attr; attr = attr->next)
497 if (!strcmp((const char *) attr->name, "ccl"))
498 ccl_field = mp::xml::get_text(attr->children);
499 else if (!strcmp((const char *) attr->name, "cql"))
500 cql_field = mp::xml::get_text(attr->children);
502 throw mp::filter::FilterException(
503 "Bad attribute " + std::string((const char *)
506 if (cql_field.length())
507 fieldmap[cql_field] = ccl_field;
511 throw mp::filter::FilterException
513 + std::string((const char *) ptr->name)
514 + " in zoom filter");
519 yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
520 std::string &database, int *error, const char **addinfo)
522 std::list<BackendPtr>::const_iterator map_it;
523 if (m_backend && m_backend->m_frontend_database == database)
528 std::string torus_db;
529 size_t db_arg_pos = database.find(',');
530 if (db_arg_pos != std::string::npos)
532 torus_db = database.substr(0, db_arg_pos);
533 db_args = database.substr(db_arg_pos+1);
540 std::map<std::string,SearchablePtr>::iterator it;
541 it = m_p->s_map.find(torus_db);
542 if (it != m_p->s_map.end())
546 xmlDoc *doc = mp::get_searchable(m_p->torus_url, torus_db);
549 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
550 *addinfo = database.c_str();
554 const xmlNode *ptr = xmlDocGetRootElement(doc);
556 { // presumably ptr is a records element node
557 // parse first record in document
558 for (ptr = ptr->children; ptr; ptr = ptr->next)
560 if (ptr->type == XML_ELEMENT_NODE
561 && !strcmp((const char *) ptr->name, "record"))
563 sptr = m_p->parse_torus_record(ptr);
573 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
574 *addinfo = database.c_str();
579 xsltStylesheetPtr xsp = 0;
580 if (sptr->transform_xsl_fname.length())
584 if (m_p->xsldir.length())
585 fname = m_p->xsldir + "/" + sptr->transform_xsl_fname;
587 fname = sptr->transform_xsl_fname;
588 xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
591 *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
592 *addinfo = "xmlParseFile failed";
596 xsp = xsltParseStylesheetDoc(xsp_doc);
599 *error = YAZ_BIB1_DATABASE_DOES_NOT_EXIST;
600 *addinfo = "xsltParseStylesheetDoc failed";
609 BackendPtr b(new Backend(sptr));
612 b->m_frontend_database = database;
613 std::string authentication = sptr->authentication;
615 b->set_option("timeout", "40");
617 if (sptr->query_encoding.length())
618 b->set_option("rpnCharset", sptr->query_encoding.c_str());
620 if (sptr->cfAuth.length())
622 b->set_option("user", sptr->cfAuth.c_str());
623 if (authentication.length())
625 size_t found = authentication.find('/');
626 if (found != std::string::npos)
628 cf_parm += "user=" + mp::util::uri_encode(authentication.substr(0, found))
629 + "&password=" + mp::util::uri_encode(authentication.substr(found+1));
632 cf_parm += "user=" + mp::util::uri_encode(authentication);
635 else if (authentication.length())
636 b->set_option("user", authentication.c_str());
638 if (sptr->cfProxy.length())
640 if (cf_parm.length())
642 cf_parm += "proxy=" + mp::util::uri_encode(sptr->cfProxy);
644 if (sptr->cfSubDb.length())
646 if (cf_parm.length())
648 cf_parm += "subdatabase=" + mp::util::uri_encode(sptr->cfSubDb);
652 if (sptr->sru.length())
654 url = "http://" + sptr->target;
655 b->set_option("sru", sptr->sru.c_str());
661 if (db_args.length())
662 url += "," + db_args;
663 else if (cf_parm.length())
664 url += "," + cf_parm;
665 yaz_log(YLOG_LOG, "url=%s", url.c_str());
666 b->connect(url, error, addinfo);
674 Z_Records *yf::Zoom::Frontend::get_records(Odr_int start,
675 Odr_int number_to_present,
677 const char **addinfo,
678 Odr_int *number_of_records_returned,
681 Odr_oid *preferredRecordSyntax,
682 const char *element_set_name)
684 *number_of_records_returned = 0;
685 Z_Records *records = 0;
686 bool enable_pz2_transform = false;
688 if (start < 0 || number_to_present <= 0)
691 if (number_to_present > 10000)
692 number_to_present = 10000;
694 ZOOM_record *recs = (ZOOM_record *)
695 odr_malloc(odr, number_to_present * sizeof(*recs));
697 char oid_name_str[OID_STR_MAX];
698 const char *syntax_name = 0;
700 if (preferredRecordSyntax)
702 if (!oid_oidcmp(preferredRecordSyntax, yaz_oid_recsyn_xml)
703 && element_set_name &&
704 !strcmp(element_set_name, "pz2"))
706 if (b->sptr->request_syntax.length())
707 syntax_name = b->sptr->request_syntax.c_str();
708 enable_pz2_transform = true;
713 yaz_oid_to_string_buf(preferredRecordSyntax, 0, oid_name_str);
717 b->set_option("preferredRecordSyntax", syntax_name);
719 if (enable_pz2_transform)
721 element_set_name = "F";
722 if (b->sptr->element_set.length())
723 element_set_name = b->sptr->element_set.c_str();
726 b->set_option("elementSetName", element_set_name);
728 b->present(start, number_to_present, recs, error, addinfo);
733 for (i = 0; i < number_to_present; i++)
738 { // only return records if no error and at least one record
739 char *odr_database = odr_strdup(odr,
740 b->m_frontend_database.c_str());
741 Z_NamePlusRecordList *npl = (Z_NamePlusRecordList *)
742 odr_malloc(odr, sizeof(*npl));
743 *number_of_records_returned = i;
744 npl->num_records = i;
745 npl->records = (Z_NamePlusRecord **)
746 odr_malloc(odr, i * sizeof(*npl->records));
747 for (i = 0; i < number_to_present; i++)
749 Z_NamePlusRecord *npr = 0;
751 int sur_error = ZOOM_record_error(recs[i], 0 /* msg */,
752 &addinfo, 0 /* diagset */);
756 npr = zget_surrogateDiagRec(odr, odr_database, sur_error,
759 else if (enable_pz2_transform)
761 char rec_type_str[100];
763 strcpy(rec_type_str, b->sptr->use_turbomarc ?
765 // prevent buffer overflow ...
766 if (b->sptr->record_encoding.length() > 0 &&
767 b->sptr->record_encoding.length() <
768 (sizeof(rec_type_str)-20))
770 strcat(rec_type_str, "; charset=");
771 strcat(rec_type_str, b->sptr->record_encoding.c_str());
775 const char *rec_buf = ZOOM_record_get(recs[i], rec_type_str,
777 if (rec_buf && b->xsp)
779 xmlDoc *rec_doc = xmlParseMemory(rec_buf, rec_len);
783 rec_res = xsltApplyStylesheet(b->xsp, rec_doc, 0);
786 xsltSaveResultToString((xmlChar **) &rec_buf, &rec_len,
793 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
794 npr->databaseName = odr_database;
795 npr->which = Z_NamePlusRecord_databaseRecord;
796 npr->u.databaseRecord =
797 z_ext_record_xml(odr, rec_buf, rec_len);
801 npr = zget_surrogateDiagRec(
803 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
810 (Z_External *) ZOOM_record_get(recs[i], "ext", 0);
813 npr = (Z_NamePlusRecord *) odr_malloc(odr, sizeof(*npr));
814 npr->databaseName = odr_database;
815 npr->which = Z_NamePlusRecord_databaseRecord;
816 npr->u.databaseRecord = ext;
820 npr = zget_surrogateDiagRec(
822 YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
823 "ZOOM_record, type ext");
826 npl->records[i] = npr;
828 records = (Z_Records*) odr_malloc(odr, sizeof(*records));
829 records->which = Z_Records_DBOSD;
830 records->u.databaseOrSurDiagnostics = npl;
835 struct cql_node *yf::Zoom::Impl::convert_cql_fields(struct cql_node *cn,
838 struct cql_node *r = 0;
846 std::map<std::string,std::string>::const_iterator it;
847 it = fieldmap.find(cn->u.st.index);
848 if (it == fieldmap.end())
850 if (it->second.length())
851 cn->u.st.index = odr_strdup(odr, it->second.c_str());
857 r = convert_cql_fields(cn->u.boolean.left, odr);
859 r = convert_cql_fields(cn->u.boolean.right, odr);
862 r = convert_cql_fields(cn->u.sort.search, odr);
868 void yf::Zoom::Frontend::handle_search(mp::Package &package)
870 Z_GDU *gdu = package.request().get();
871 Z_APDU *apdu_req = gdu->u.z3950;
872 Z_APDU *apdu_res = 0;
874 Z_SearchRequest *sr = apdu_req->u.searchRequest;
875 if (sr->num_databaseNames != 1)
877 apdu_res = odr.create_searchResponse(
878 apdu_req, YAZ_BIB1_TOO_MANY_DATABASES_SPECIFIED, 0);
879 package.response() = apdu_res;
884 const char *addinfo = 0;
885 std::string db(sr->databaseNames[0]);
886 BackendPtr b = get_backend_from_databases(db, &error, &addinfo);
890 odr.create_searchResponse(
891 apdu_req, error, addinfo);
892 package.response() = apdu_res;
896 b->set_option("setname", "default");
899 Z_Query *query = sr->query;
903 if (query->which == Z_Query_type_1 || query->which == Z_Query_type_101)
906 pqf_wrbuf = wrbuf_alloc();
907 yaz_rpnquery_to_wrbuf(pqf_wrbuf, query->u.type_1);
909 else if (query->which == Z_Query_type_2)
912 ccl_wrbuf = wrbuf_alloc();
913 wrbuf_write(ccl_wrbuf, (const char *) query->u.type_2->buf,
914 query->u.type_2->len);
916 else if (query->which == Z_Query_type_104 &&
917 query->u.type_104->which == Z_External_CQL)
920 const char *cql = query->u.type_104->u.cql;
921 CQL_parser cp = cql_parser_create();
922 int r = cql_parser_string(cp, cql);
925 cql_parser_destroy(cp);
927 odr.create_searchResponse(apdu_req,
928 YAZ_BIB1_MALFORMED_QUERY,
930 package.response() = apdu_res;
933 struct cql_node *cn = cql_parser_result(cp);
934 struct cql_node *cn_error = m_p->convert_cql_fields(cn, odr);
937 // hopefully we are getting a ptr to a index+relation+term node
939 if (cn_error->which == CQL_NODE_ST)
940 addinfo = cn_error->u.st.index;
943 odr.create_searchResponse(apdu_req,
944 YAZ_BIB1_UNSUPP_USE_ATTRIBUTE,
946 package.response() = apdu_res;
951 r = cql_to_ccl_buf(cn, ccl_buf, sizeof(ccl_buf));
954 ccl_wrbuf = wrbuf_alloc();
955 wrbuf_puts(ccl_wrbuf, ccl_buf);
957 cql_parser_destroy(cp);
961 odr.create_searchResponse(apdu_req,
962 YAZ_BIB1_MALFORMED_QUERY,
963 "CQL to CCL conversion error");
964 package.response() = apdu_res;
971 odr.create_searchResponse(apdu_req, YAZ_BIB1_QUERY_TYPE_UNSUPP, 0);
972 package.response() = apdu_res;
979 assert(pqf_wrbuf == 0);
981 struct ccl_rpn_node *cn;
982 yaz_log(YLOG_LOG, "CCL: %s", wrbuf_cstr(ccl_wrbuf));
983 cn = ccl_find_str(b->sptr->ccl_bibset, wrbuf_cstr(ccl_wrbuf),
985 wrbuf_destroy(ccl_wrbuf);
988 char *addinfo = odr_strdup(odr, ccl_err_msg(cerror));
989 int z3950_diag = YAZ_BIB1_MALFORMED_QUERY;
993 case CCL_ERR_UNKNOWN_QUAL:
994 z3950_diag = YAZ_BIB1_UNSUPP_USE_ATTRIBUTE;
996 case CCL_ERR_TRUNC_NOT_LEFT:
997 case CCL_ERR_TRUNC_NOT_RIGHT:
998 case CCL_ERR_TRUNC_NOT_BOTH:
999 z3950_diag = YAZ_BIB1_UNSUPP_TRUNCATION_ATTRIBUTE;
1003 odr.create_searchResponse(apdu_req, z3950_diag, addinfo);
1004 package.response() = apdu_res;
1007 pqf_wrbuf = wrbuf_alloc();
1008 ccl_pquery(pqf_wrbuf, cn);
1013 if (b->get_option("sru"))
1017 zquery = p_query_rpn(odr, wrbuf_cstr(pqf_wrbuf));
1018 WRBUF wrb = wrbuf_alloc();
1020 if (!strcmp(b->get_option("sru"), "solr"))
1022 solr_transform_t cqlt = solr_transform_create();
1024 status = solr_transform_rpn2solr_wrbuf(cqlt, wrb, zquery);
1026 solr_transform_close(cqlt);
1030 cql_transform_t cqlt = cql_transform_create();
1032 status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery);
1034 cql_transform_close(cqlt);
1038 yaz_log(YLOG_LOG, "search CQL: %s", wrbuf_cstr(wrb));
1039 b->search_cql(wrbuf_cstr(wrb), &hits, &error, &addinfo);
1043 wrbuf_destroy(pqf_wrbuf);
1047 odr.create_searchResponse(apdu_req, YAZ_BIB1_MALFORMED_QUERY,
1048 "can not convert from RPN to CQL/SOLR");
1049 package.response() = apdu_res;
1055 yaz_log(YLOG_LOG, "search PQF: %s", wrbuf_cstr(pqf_wrbuf));
1056 b->search_pqf(wrbuf_cstr(pqf_wrbuf), &hits, &error, &addinfo);
1057 wrbuf_destroy(pqf_wrbuf);
1061 const char *element_set_name = 0;
1062 Odr_int number_to_present = 0;
1064 mp::util::piggyback_sr(sr, hits, number_to_present, &element_set_name);
1066 Odr_int number_of_records_returned = 0;
1067 Z_Records *records = get_records(
1068 0, number_to_present, &error, &addinfo,
1069 &number_of_records_returned, odr, b, sr->preferredRecordSyntax,
1071 apdu_res = odr.create_searchResponse(apdu_req, error, addinfo);
1074 apdu_res->u.searchResponse->records = records;
1075 apdu_res->u.searchResponse->numberOfRecordsReturned =
1076 odr_intdup(odr, number_of_records_returned);
1078 apdu_res->u.searchResponse->resultCount = odr_intdup(odr, hits);
1079 package.response() = apdu_res;
1082 void yf::Zoom::Frontend::handle_present(mp::Package &package)
1084 Z_GDU *gdu = package.request().get();
1085 Z_APDU *apdu_req = gdu->u.z3950;
1086 Z_APDU *apdu_res = 0;
1087 Z_PresentRequest *pr = apdu_req->u.presentRequest;
1092 package.response() = odr.create_presentResponse(
1093 apdu_req, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, 0);
1096 const char *element_set_name = 0;
1097 Z_RecordComposition *comp = pr->recordComposition;
1098 if (comp && comp->which != Z_RecordComp_simple)
1100 package.response() = odr.create_presentResponse(
1102 YAZ_BIB1_PRESENT_COMP_SPEC_PARAMETER_UNSUPP, 0);
1105 if (comp && comp->u.simple->which == Z_ElementSetNames_generic)
1106 element_set_name = comp->u.simple->u.generic;
1107 Odr_int number_of_records_returned = 0;
1109 const char *addinfo = 0;
1110 Z_Records *records = get_records(
1111 *pr->resultSetStartPoint - 1, *pr->numberOfRecordsRequested,
1112 &error, &addinfo, &number_of_records_returned, odr, m_backend,
1113 pr->preferredRecordSyntax, element_set_name);
1115 apdu_res = odr.create_presentResponse(apdu_req, error, addinfo);
1118 apdu_res->u.presentResponse->records = records;
1119 apdu_res->u.presentResponse->numberOfRecordsReturned =
1120 odr_intdup(odr, number_of_records_returned);
1122 package.response() = apdu_res;
1125 void yf::Zoom::Frontend::handle_package(mp::Package &package)
1127 Z_GDU *gdu = package.request().get();
1130 else if (gdu->which == Z_GDU_Z3950)
1132 Z_APDU *apdu_req = gdu->u.z3950;
1133 if (apdu_req->which == Z_APDU_initRequest)
1136 package.response() = odr.create_close(
1138 Z_Close_protocolError,
1141 else if (apdu_req->which == Z_APDU_searchRequest)
1143 handle_search(package);
1145 else if (apdu_req->which == Z_APDU_presentRequest)
1147 handle_present(package);
1152 package.response() = odr.create_close(
1154 Z_Close_protocolError,
1155 "zoom filter cannot handle this APDU");
1156 package.session().close();
1161 package.session().close();
1165 void yf::Zoom::Impl::process(mp::Package &package)
1167 FrontendPtr f = get_frontend(package);
1168 Z_GDU *gdu = package.request().get();
1170 if (f->m_is_virtual)
1172 f->handle_package(package);
1174 else if (gdu && gdu->which == Z_GDU_Z3950 && gdu->u.z3950->which ==
1177 Z_InitRequest *req = gdu->u.z3950->u.initRequest;
1178 f->m_init_gdu = gdu;
1181 Z_APDU *apdu = odr.create_initResponse(gdu->u.z3950, 0, 0);
1182 Z_InitResponse *resp = apdu->u.initResponse;
1185 static const int masks[] = {
1190 for (i = 0; masks[i] != -1; i++)
1191 if (ODR_MASK_GET(req->options, masks[i]))
1192 ODR_MASK_SET(resp->options, masks[i]);
1194 static const int versions[] = {
1195 Z_ProtocolVersion_1,
1196 Z_ProtocolVersion_2,
1197 Z_ProtocolVersion_3,
1200 for (i = 0; versions[i] != -1; i++)
1201 if (ODR_MASK_GET(req->protocolVersion, versions[i]))
1202 ODR_MASK_SET(resp->protocolVersion, versions[i]);
1206 *resp->preferredMessageSize = *req->preferredMessageSize;
1207 *resp->maximumRecordSize = *req->maximumRecordSize;
1209 package.response() = apdu;
1210 f->m_is_virtual = true;
1215 release_frontend(package);
1219 static mp::filter::Base* filter_creator()
1221 return new mp::filter::Zoom;
1225 struct metaproxy_1_filter_struct metaproxy_1_filter_zoom = {
1236 * c-file-style: "Stroustrup"
1237 * indent-tabs-mode: nil
1239 * vim: shiftwidth=4 tabstop=8 expandtab