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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "query.h"
#include "queryhandle.h"
#include "juniperdebug.h"
#include "Matcher.h"
#include "queryparser.h"
#include "querymodifier.h"
#include <vespa/log/log.h>
LOG_SETUP(".juniper.queryhandle");
namespace juniper
{
QueryHandle::QueryHandle(const IQuery& fquery, const char* options, QueryModifier & modifier) :
_mo(NULL),
_privileged_port(false),
_dynsum_len(-1),
_max_matches(-1),
_surround_max(-1),
_stem_extend(-1),
_stem_min(-1),
_winsize(-1),
_winsize_fallback_multiplier(-1),
_max_match_candidates(-1),
_querytext(""),
_expansion_cache(NULL),
_log_mask(0), _options(0), _limit(0), _has_expansions(false),
_has_reductions(false)
{
QueryVisitor* vis;
/* Parse the options parameter structure, the parameter
* will be invalid later on so results must be stored here
*/
parse_parameters(options);
/* Then parse the original query */
if (_querytext.size() > 0) {
// override the fastserver query stack with the query.xxx stack value:
QueryParser q(_querytext.c_str());
LOG(debug, "Using juniper specific query '%s'", _querytext.c_str());
vis = new QueryVisitor(q, this, modifier);
} else {
vis = new QueryVisitor(fquery, this, modifier);
}
QueryExpr* query = vis->GetQuery();
if (query) {
if (LOG_WOULD_LOG(debug)) {
std::string s;
query->Dump(s);
LOG(debug, "juniper::QueryHandle: stack dump: %s", s.c_str());
}
/* The default match object keeps a set of "compiled" data for the
* original query (no language dependent expansion or rewriting (reduction)
* applied)
*/
_mo = new MatchObject(query, _has_reductions);
if (_has_expansions) { // set by query visitor...
_expansion_cache = new ExpansionCache(_mo);
}
}
else {
LOG(debug, "juniper::QueryHandle: stack dump: (no stack)");
}
delete vis;
}
QueryHandle::~QueryHandle()
{
LOG(debug, "juniper: Deleting query handle");
if (_expansion_cache) delete _expansion_cache;
if (_mo) delete _mo;
}
MatchObject* QueryHandle::MatchObj(uint32_t langid)
{
if (!_expansion_cache || (int)langid < 0) return _mo;
return _expansion_cache->Lookup(langid);
}
void QueryHandle::SetExpansions()
{
_has_expansions = true;
}
void QueryHandle::SetReductions()
{
_has_reductions = true;
}
// small utility
std::string fetchtext(char* cur, char** next)
{
*next = cur;
while (**next != '\0' && **next != '_') (*next)++;
std::string t(cur, *next);
return t;
}
void QueryHandle::parse_parameters(const char* options)
{
if (!options) return;
char* p = const_cast<char*>(options);
LOG(debug, "juniper parameter string '%s'", options);
// Initially check for a privileged option enable from QR server:
if (strncmp(p, "priv.", 5) == 0)
{
p += 5;
SetPrivileged((strtol(p, &p, 10) > 0));
}
// options contains a juniperoptions command string, parse it
for (;*p != '\0';)
{
if (strncmp(p, "dynlength.", 10) == 0)
{
p += 10;
_dynsum_len = strtol(p, &p, 0);
LOG(debug, "Setting dynsum.length to %d", _dynsum_len);
}
else if (strncmp(p, "dynmatches.", 11) == 0)
{
p += 11;
_max_matches = strtol(p, &p, 0);
}
else if (strncmp(p, "dynsurmax.", 10) == 0)
{
p += 10;
_surround_max = strtol(p, &p, 0);
}
else if (strncmp(p, "query.", 6) == 0)
{
p += 6;
_querytext = fetchtext(p, &p);
}
else if (strncmp(p, "near.", 5) == 0)
{
p += 5;
_limit = strtoul(p, &p, 0);
_options |= X_LIMIT | X_COMPLETE | X_CONSTR | X_CHKVAL;
LOG(debug, "juniper parameter: Setting NEAR(%d)", _limit);
}
else if (strncmp(p, "within.", 7) == 0)
{
p += 7;
_limit = strtoul(p, &p, 0);
_options |= X_LIMIT | X_ORDERED | X_COMPLETE | X_CONSTR | X_CHKVAL;
LOG(debug, "juniper parameter: Setting WITHIN(%d)", _limit);
}
else if (strncmp(p, "onear.", 6) == 0)
{
p += 6;
_limit = strtoul(p, &p, 0);
_options |= X_LIMIT | X_ORDERED | X_COMPLETE | X_CONSTR | X_CHKVAL;
LOG(debug, "juniper parameter: Setting ONEAR(%d)", _limit);
}
else if (strncmp(p, "stemext.", 8) == 0)
{
p += 8;
_stem_extend = strtoul(p, &p, 0);
}
else if (strncmp(p, "stemmin.", 8) == 0)
{
p += 8;
_stem_min = strtoul(p, &p, 0);
}
else if (strncmp(p, "winsize.", 8) == 0)
{
p += 8;
_winsize = strtoul(p, &p, 0);
}
else if (strncmp(p, "winsize_fallback_multiplier.", 28) == 0)
{
p += 28;
_winsize_fallback_multiplier = strtoul(p, &p, 0);
}
else if (strncmp(p, "max_match_candidates.", 21) == 0)
{
p += 21;
_max_match_candidates = strtoul(p, &p, 0);
}
else if (Privileged())
{
if (strncmp(p, "log.", 4) == 0)
{
p += 4;
SetLog(strtol(p, &p, 0));
}
else if (strncmp(p, "debug.", 6) == 0)
{
p += 6;
juniper::SetDebug(strtol(p, &p, 0));
}
}
while (*p != '\0' && *p != '_') p++;
if (*p == '_') p++;
}
} // end parse_parameters
} // end juniper namespace
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