X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;ds=sidebyside;f=src%2Ffilter_record_transform.cpp;h=87fdf87dab1400ab9c3c856c5b6570c9ecd596f4;hb=b468b79801ad1e8ee16e9fa0a95c54abbb9181ff;hp=62016979a92219e78d9797b87fb7f9aa60b6e978;hpb=dad313c700b9ff9b4728d1b8ef4a0ab5bedf86b1;p=metaproxy-moved-to-github.git diff --git a/src/filter_record_transform.cpp b/src/filter_record_transform.cpp index 6201697..87fdf87 100644 --- a/src/filter_record_transform.cpp +++ b/src/filter_record_transform.cpp @@ -1,26 +1,36 @@ -/* $Id: filter_record_transform.cpp,v 1.2 2006-10-04 11:21:47 marc Exp $ - Copyright (c) 2005-2006, Index Data. +/* This file is part of Metaproxy. + Copyright (C) 2005-2011 Index Data - See the LICENSE file for details - */ +Metaproxy is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ #include "config.hpp" -#include "filter.hpp" #include "filter_record_transform.hpp" -#include "package.hpp" -#include "util.hpp" +#include +#include #include "gduutil.hpp" -#include "xmlutil.hpp" +#include #include #include -//#include - #include namespace mp = metaproxy_1; namespace yf = mp::filter; +namespace mp_util = metaproxy_1::util; namespace metaproxy_1 { namespace filter { @@ -29,7 +39,7 @@ namespace metaproxy_1 { Impl(); ~Impl(); void process(metaproxy_1::Package & package) const; - void configure(const xmlNode * xml_node); + void configure(const xmlNode * xml_node, const char *path); private: yaz_retrieval_t m_retrieval; }; @@ -46,9 +56,10 @@ yf::RecordTransform::~RecordTransform() { // must have a destructor because of boost::scoped_ptr } -void yf::RecordTransform::configure(const xmlNode *xmlnode) +void yf::RecordTransform::configure(const xmlNode *xmlnode, bool test_only, + const char *path) { - m_p->configure(xmlnode); + m_p->configure(xmlnode, path); } void yf::RecordTransform::process(mp::Package &package) const @@ -73,11 +84,10 @@ yf::RecordTransform::Impl::~Impl() yaz_retrieval_destroy(m_retrieval); } -void yf::RecordTransform::Impl::configure(const xmlNode *xml_node) +void yf::RecordTransform::Impl::configure(const xmlNode *xml_node, + const char *path) { - //const char *srcdir = getenv("srcdir"); - //if (srcdir) - // yaz_retrieval_set_path(m_retrieval, srcdir); + yaz_retrieval_set_path(m_retrieval, path); if (!xml_node) throw mp::XMLError("RecordTransform filter config: empty XML DOM"); @@ -93,7 +103,7 @@ void yf::RecordTransform::Impl::configure(const xmlNode *xml_node) if (0 == strcmp((const char *) retrieval_node->name, "retrievalinfo")) break; } - + // read configuration if ( 0 != yaz_retrieval_configure(m_retrieval, retrieval_node)){ std::string msg("RecordTransform filter config: "); @@ -117,46 +127,103 @@ void yf::RecordTransform::Impl::process(mp::Package &package) const } // getting original present request - Z_PresentRequest *pr = gdu_req->u.z3950->u.presentRequest; + Z_PresentRequest *pr_req = gdu_req->u.z3950->u.presentRequest; // setting up ODR's for memory during encoding/decoding //mp::odr odr_de(ODR_DECODE); mp::odr odr_en(ODR_ENCODE); - // now re-insructing the z3950 backend present request - - // z3950'fy record syntax - //Odr_oid odr_oid; - if(pr->preferredRecordSyntax){ - (pr->preferredRecordSyntax) - = yaz_str_to_z3950oid(odr_en, CLASS_RECSYN, "xml"); - - // = yaz_oidval_to_z3950oid (odr_en, CLASS_RECSYN, VAL_TEXT_XML); + // setting up variables for conversion state + yaz_record_conv_t rc = 0; + int ret_code; + + const char *input_schema = 0; + Odr_oid *input_syntax = 0; + + if(pr_req->recordComposition){ + input_schema + = mp_util::record_composition_to_esn(pr_req->recordComposition); + } + if(pr_req->preferredRecordSyntax){ + input_syntax = pr_req->preferredRecordSyntax; } - // Odr_oid *yaz_str_to_z3950oid (ODR o, int oid_class, - // const char *str); - // const char *yaz_z3950oid_to_str (Odr_oid *oid, int *oid_class); + + const char *match_schema = 0; + Odr_oid *match_syntax = 0; + + const char *backend_schema = 0; + Odr_oid *backend_syntax = 0; + ret_code + = yaz_retrieval_request(m_retrieval, + input_schema, input_syntax, + &match_schema, &match_syntax, + &rc, + &backend_schema, &backend_syntax); + + // error handling + if (ret_code != 0) + { + // need to construct present error package and send back + + Z_APDU *apdu = 0; + + const char *details = 0; + if (ret_code == -1) /* error ? */ + { + details = yaz_retrieval_get_error(m_retrieval); + apdu = odr_en.create_presentResponse( + gdu_req->u.z3950, + YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS, details); + } + else if (ret_code == 1 || ret_code == 3) + { + details = input_schema; + apdu = odr_en.create_presentResponse( + gdu_req->u.z3950, + YAZ_BIB1_ELEMENT_SET_NAMES_UNSUPP, details); + } + else if (ret_code == 2) + { + char oidbuf[OID_STR_MAX]; + oid_oid_to_dotstring(input_syntax, oidbuf); + details = odr_strdup(odr_en, oidbuf); + + apdu = odr_en.create_presentResponse( + gdu_req->u.z3950, + YAZ_BIB1_RECORD_SYNTAX_UNSUPP, details); + } + package.response() = apdu; + return; + } + + // now re-coding the z3950 backend present request + + if (backend_syntax) + pr_req->preferredRecordSyntax = odr_oiddup(odr_en, backend_syntax); + else + pr_req->preferredRecordSyntax = 0; + // z3950'fy record schema - //if () - // { - // pr->recordComposition - // = (Z_RecordComposition *) - // odr_malloc(odr_en, sizeof(Z_RecordComposition)); - // pr->recordComposition->which - // = Z_RecordComp_simple; - // pr->recordComposition->u.simple - // = build_esn_from_schema(odr_en, - // (const char *) sr_req->recordSchema); - // } + if (backend_schema) + { + pr_req->recordComposition + = (Z_RecordComposition *) + odr_malloc(odr_en, sizeof(Z_RecordComposition)); + pr_req->recordComposition->which + = Z_RecordComp_simple; + pr_req->recordComposition->u.simple + = (Z_ElementSetNames *) + odr_malloc(odr_en, sizeof(Z_ElementSetNames)); + pr_req->recordComposition->u.simple->which = Z_ElementSetNames_generic; + pr_req->recordComposition->u.simple->u.generic + = odr_strdup(odr_en, backend_schema); + } // attaching Z3950 package to filter chain package.request() = gdu_req; - // std::cout << "z3950_present_request " << *apdu << "\n"; - - // sending package package.move(); //check successful Z3950 present response @@ -166,7 +233,6 @@ void yf::RecordTransform::Impl::process(mp::Package &package) const || !gdu_res->u.z3950->u.presentResponse) { - std::cout << "record-transform: error back present\n"; package.session().close(); return; } @@ -176,7 +242,80 @@ void yf::RecordTransform::Impl::process(mp::Package &package) const // std::cout << "z3950_present_request OK\n"; // std::cout << "back z3950 " << *gdu_res << "\n"; + Z_PresentResponse * pr_res = gdu_res->u.z3950->u.presentResponse; + // let non surrogate dioagnostics in Z3950 present response package + // pass to frontend - just return + if (pr_res->records + && pr_res->records->which == Z_Records_NSD + && pr_res->records->u.nonSurrogateDiagnostic) + { + // we might do more clever tricks to "reverse" + // these error(s). + + //*pr_res->records->u.nonSurrogateDiagnostic->condition = + // YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS; + } + + // record transformation must take place + if (rc && pr_res + && pr_res->numberOfRecordsReturned + && *(pr_res->numberOfRecordsReturned) > 0 + && pr_res->records + && pr_res->records->which == Z_Records_DBOSD + && pr_res->records->u.databaseOrSurDiagnostics->num_records) + { + //transform all records + for (int i = 0; + i < pr_res->records->u.databaseOrSurDiagnostics->num_records; + i++) + { + Z_NamePlusRecord *npr + = pr_res->records->u.databaseOrSurDiagnostics->records[i]; + if (npr->which == Z_NamePlusRecord_databaseRecord) + { + WRBUF output_record = wrbuf_alloc(); + Z_External *r = npr->u.databaseRecord; + int ret_trans = 0; + if (r->which == Z_External_OPAC) + { +#if YAZ_VERSIONL >= 0x030011 + ret_trans = + yaz_record_conv_opac_record(rc, r->u.opac, + output_record); +#else + ; +#endif + } + else if (r->which == Z_External_octet) + { + ret_trans = + yaz_record_conv_record(rc, (const char *) + r->u.octet_aligned->buf, + r->u.octet_aligned->len, + output_record); + } + if (ret_trans == 0) + { + npr->u.databaseRecord = + z_ext_record_oid(odr_en, match_syntax, + wrbuf_buf(output_record), + wrbuf_len(output_record)); + } + else + { + pr_res->records-> + u.databaseOrSurDiagnostics->records[i] + = zget_surrogateDiagRec( + odr_en, npr->databaseName, + YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS, + yaz_record_conv_get_error(rc)); + } + wrbuf_destroy(output_record); + } + } + } + package.response() = gdu_res; return; } @@ -198,8 +337,9 @@ extern "C" { /* * Local variables: * c-basic-offset: 4 + * c-file-style: "Stroustrup" * indent-tabs-mode: nil - * c-file-style: "stroustrup" * End: * vim: shiftwidth=4 tabstop=8 expandtab */ +