#include <metaproxy/package.hpp>
#include <metaproxy/util.hpp>
#include <yaz/log.h>
+#include <yaz/oid_db.h>
+#include <yaz/diagbib1.h>
#include <map>
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+
+#include <zorba/zorba.h>
+#include <zorba/store_manager.h>
+#include <zorba/serializer.h>
+#include <zorba/singleton_item_sequence.h>
+#include <zorba/zorba_exception.h>
+
namespace mp = metaproxy_1;
namespace yf = mp::filter;
namespace mp_util = metaproxy_1::util;
using namespace mp;
+using namespace zorba;
namespace metaproxy_1 {
namespace filter {
void start() const;
void stop(int signo) const;
private:
+ bool convert_one_record(const char *input_buf,
+ size_t input_len,
+ std::string &result) const;
std::map<std::string, std::string> zorba_variables;
std::string zorba_filename;
std::string zorba_script;
std::string zorba_record_variable;
+ std::string elementset_input;
+ std::string elementset_output;
+ Zorba *lZorba;
+ XQuery_t lQuery;
};
}
}
yf::XQuery::XQuery()
{
+ lZorba = 0;
}
yf::XQuery::~XQuery()
{
-
+ if (lZorba)
+ lZorba->shutdown();
}
-
void yf::XQuery::start() const
{
}
{
}
+bool yf::XQuery::convert_one_record(const char *input_buf,
+ size_t input_len,
+ std::string &result) const
+{
+ XQuery_t tQuery = lQuery->clone();
+
+ zorba::DynamicContext* lDynamicContext = tQuery->getDynamicContext();
+
+ zorba::Item lItem;
+ std::map<std::string, std::string>::const_iterator it;
+ for (it = zorba_variables.begin(); it != zorba_variables.end(); it++)
+ {
+ lItem = lZorba->getItemFactory()->createString(it->second);
+ lDynamicContext->setVariable(it->first, lItem);
+ }
+ std::string rec_content = "raw:" + std::string(input_buf, input_len);
+ lItem = lZorba->getItemFactory()->createString(rec_content);
+ lDynamicContext->setVariable(zorba_record_variable, lItem);
+
+ try {
+ std::stringstream ss;
+ tQuery->execute(ss);
+ result = ss.str();
+ return true;
+ } catch ( ZorbaException &e) {
+ result = e.what();
+ yaz_log(YLOG_WARN, "XQuery execute: %s", result.c_str());
+ return false;
+ }
+}
+
void yf::XQuery::process(Package &package) const
{
Z_GDU *gdu_req = package.request().get();
package.move();
return;
}
+
+ mp::odr odr_en(ODR_ENCODE);
+
+ const char *backend_schema = 0;
+ const Odr_oid *backend_syntax = 0;
+
+ if (input_schema && !strcmp(input_schema, elementset_input.c_str()) &&
+ (!input_syntax || !oid_oidcmp(input_syntax, yaz_oid_recsyn_xml)))
+ {
+ backend_schema = elementset_output.c_str();
+ backend_syntax = yaz_oid_recsyn_xml;
+ }
+ else
+ {
+ package.move();
+ return;
+ }
+
+ if (sr_req)
+ {
+ if (backend_syntax)
+ sr_req->preferredRecordSyntax = odr_oiddup(odr_en, backend_syntax);
+ else
+ sr_req->preferredRecordSyntax = 0;
+ if (backend_schema)
+ {
+ sr_req->smallSetElementSetNames
+ = (Z_ElementSetNames *)
+ odr_malloc(odr_en, sizeof(Z_ElementSetNames));
+ sr_req->smallSetElementSetNames->which = Z_ElementSetNames_generic;
+ sr_req->smallSetElementSetNames->u.generic
+ = odr_strdup(odr_en, backend_schema);
+ sr_req->mediumSetElementSetNames = sr_req->smallSetElementSetNames;
+ }
+ else
+ {
+ sr_req->smallSetElementSetNames = 0;
+ sr_req->mediumSetElementSetNames = 0;
+ }
+ }
+ else if (pr_req)
+ {
+ if (backend_syntax)
+ pr_req->preferredRecordSyntax = odr_oiddup(odr_en, backend_syntax);
+ else
+ pr_req->preferredRecordSyntax = 0;
+
+ 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);
+ }
+ else
+ pr_req->recordComposition = 0;
+ }
package.move();
+
+ Z_GDU *gdu_res = package.response().get();
+
+ // see if we have a records list to patch!
+ Z_NamePlusRecordList *records = 0;
+ if (gdu_res && gdu_res->which == Z_GDU_Z3950 &&
+ gdu_res->u.z3950->which == Z_APDU_presentResponse)
+ {
+ Z_PresentResponse * pr_res = gdu_res->u.z3950->u.presentResponse;
+
+ if (pr_res
+ && pr_res->numberOfRecordsReturned
+ && *(pr_res->numberOfRecordsReturned) > 0
+ && pr_res->records
+ && pr_res->records->which == Z_Records_DBOSD)
+ {
+ records = pr_res->records->u.databaseOrSurDiagnostics;
+ }
+ }
+ if (gdu_res && gdu_res->which == Z_GDU_Z3950 &&
+ gdu_res->u.z3950->which == Z_APDU_searchResponse)
+ {
+ Z_SearchResponse *sr_res = gdu_res->u.z3950->u.searchResponse;
+
+ if (sr_res
+ && sr_res->numberOfRecordsReturned
+ && *(sr_res->numberOfRecordsReturned) > 0
+ && sr_res->records
+ && sr_res->records->which == Z_Records_DBOSD)
+ {
+ records = sr_res->records->u.databaseOrSurDiagnostics;
+ }
+ }
+ if (records)
+ {
+ int i;
+ for (i = 0; i < records->num_records; i++)
+ {
+ Z_NamePlusRecord **npr = &records->records[i];
+ if ((*npr)->which == Z_NamePlusRecord_databaseRecord)
+ {
+ const char *details = 0;
+ Z_External *r = (*npr)->u.databaseRecord;
+ int ret_trans = -1;
+ if (r->which == Z_External_octet &&
+ !oid_oidcmp(r->direct_reference, yaz_oid_recsyn_xml))
+ {
+ std::string result;
+ if (convert_one_record(
+ r->u.octet_aligned->buf, r->u.octet_aligned->len,
+ result))
+ {
+ (*npr)->u.databaseRecord =
+ z_ext_record_oid(odr_en, yaz_oid_recsyn_xml,
+ result.c_str(),
+ result.length());
+ }
+ else
+ {
+ *npr = zget_surrogateDiagRec(
+ odr_en, (*npr)->databaseName,
+ YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS,
+ result.c_str());
+ }
+ }
+ }
+ }
+ package.response() = gdu_res;
+ }
}
void yf::XQuery::configure(const xmlNode * ptr, bool test_only,
{
if (ptr->type != XML_ELEMENT_NODE)
continue;
- if (!strcmp((const char *) ptr->name, "setVariable"))
+ if (!strcmp((const char *) ptr->name, "elementset"))
{
- std::string name;
- std::string value;
struct _xmlAttr *attr;
for (attr = ptr->properties; attr; attr = attr->next)
if (!strcmp((const char *) attr->name, "name"))
- name = mp::xml::get_text(attr->children);
- else if (!strcmp((const char *) attr->name, "value"))
- value = mp::xml::get_text(attr->children);
+ elementset_input = mp::xml::get_text(attr->children);
+ else if (!strcmp((const char *) attr->name, "backend"))
+ elementset_output = mp::xml::get_text(attr->children);
else
throw mp::filter::FilterException(
"Bad attribute " + std::string((const char *)
attr->name));
- if (name.length() > 0)
- zorba_variables[name] = value;
}
- else if (!strcmp((const char *) ptr->name, "filename"))
+ else if (!strcmp((const char *) ptr->name, "variable"))
{
+ std::string name;
std::string value;
struct _xmlAttr *attr;
for (attr = ptr->properties; attr; attr = attr->next)
- if (!strcmp((const char *) attr->name, "value"))
+ if (!strcmp((const char *) attr->name, "name"))
+ name = mp::xml::get_text(attr->children);
+ else if (!strcmp((const char *) attr->name, "value"))
value = mp::xml::get_text(attr->children);
else
throw mp::filter::FilterException(
"Bad attribute " + std::string((const char *)
attr->name));
- zorba_filename = value;
+ if (name.length() > 0)
+ zorba_variables[name] = value;
}
else if (!strcmp((const char *) ptr->name, "script"))
{
- std::string value;
+ std::string name;
struct _xmlAttr *attr;
for (attr = ptr->properties; attr; attr = attr->next)
- if (!strcmp((const char *) attr->name, "value"))
- value = mp::xml::get_text(attr->children);
+ if (!strcmp((const char *) attr->name, "name"))
+ name = mp::xml::get_text(attr->children);
else
throw mp::filter::FilterException(
"Bad attribute " + std::string((const char *)
attr->name));
- zorba_script = value;
+ zorba_script = name;
}
else if (!strcmp((const char *) ptr->name, "record"))
{
- std::string value;
+ std::string name;
struct _xmlAttr *attr;
for (attr = ptr->properties; attr; attr = attr->next)
- if (!strcmp((const char *) attr->name, "value"))
- value = mp::xml::get_text(attr->children);
+ if (!strcmp((const char *) attr->name, "name"))
+ name = mp::xml::get_text(attr->children);
else
throw mp::filter::FilterException(
"Bad attribute " + std::string((const char *)
attr->name));
- zorba_record_variable = value;
+ zorba_record_variable = name;
}
else
{
throw mp::filter::FilterException("Missing element script");
if (zorba_record_variable.length() == 0)
throw mp::filter::FilterException("Missing element record");
- if (zorba_filename.length() == 0)
- throw mp::filter::FilterException("Missing element filename");
+ if (!test_only)
+ {
+ void* lStore = StoreManager::getStore();
+ lZorba = Zorba::getInstance(lStore);
+
+ lQuery = lZorba->createQuery();
+
+ try {
+ size_t t = zorba_script.find_last_of('/');
+ if (t != std::string::npos)
+ lQuery->setFileName(zorba_script.substr(0, t + 1));
+ std::unique_ptr<std::istream> qfile(
+ new std::ifstream(zorba_script.c_str()));
+ Zorba_CompilerHints lHints;
+ lQuery->compile(*qfile, lHints);
+ } catch ( ZorbaException &e) {
+ std::string msg = "XQuery compile: ";
+ msg += e.what();
+ throw mp::filter::FilterException(msg);
+ }
+ }
}
static yf::Base* filter_creator()
projects / mp-xquery-moved-to-github.git / blobdiff