Compiler*
PhraseQuery_Make_Compiler_IMP(PhraseQuery *self, Searcher *searcher,
float boost, bool subordinate) {
PhraseQueryIVARS *const ivars = PhraseQuery_IVARS(self);
if (Vec_Get_Size(ivars->terms) == 1) {
// Optimize for one-term "phrases".
Obj *term = Vec_Fetch(ivars->terms, 0);
TermQuery *term_query = TermQuery_new(ivars->field, term);
TermCompiler *term_compiler;
TermQuery_Set_Boost(term_query, ivars->boost);
term_compiler
= (TermCompiler*)TermQuery_Make_Compiler(term_query, searcher,
boost, subordinate);
DECREF(term_query);
return (Compiler*)term_compiler;
}
else {
PhraseCompiler *compiler
= PhraseCompiler_new(self, searcher, boost);
if (!subordinate) {
PhraseCompiler_Normalize(compiler);
}
return (Compiler*)compiler;
}
}
PhraseCompiler*
PhraseCompiler_init(PhraseCompiler *self, PhraseQuery *parent,
Searcher *searcher, float boost)
{
Schema *schema = Searcher_Get_Schema(searcher);
Similarity *sim = Schema_Fetch_Sim(schema, parent->field);
VArray *terms = parent->terms;
uint32_t i, max;
// Try harder to find a Similarity if necessary.
if (!sim) { sim = Schema_Get_Similarity(schema); }
// Init.
Compiler_init((Compiler*)self, (Query*)parent, searcher, sim, boost);
// Store IDF for the phrase.
self->idf = 0;
for (i = 0, max = VA_Get_Size(terms); i < max; i++) {
Obj *term = VA_Fetch(terms, i);
int32_t doc_max = Searcher_Doc_Max(searcher);
int32_t doc_freq = Searcher_Doc_Freq(searcher, parent->field, term);
self->idf += Sim_IDF(sim, doc_freq, doc_max);
}
// Calculate raw weight.
self->raw_weight = self->idf * self->boost;
// Make final preparations.
PhraseCompiler_Normalize(self);
return self;
}
PhraseCompiler*
PhraseCompiler_init(PhraseCompiler *self, PhraseQuery *parent,
Searchable *searchable, float boost)
{
Schema *schema = Searchable_Get_Schema(searchable);
Similarity *sim = Schema_Fetch_Sim(schema, parent->field);
VArray *terms = parent->terms;
u32_t i, max;
/* Try harder to find a Similarity if necessary. */
if (!sim) { sim = Schema_Get_Similarity(schema); }
/* Init. */
Compiler_init((Compiler*)self, (Query*)parent, searchable, sim, boost);
/* Store IDF for the phrase. */
self->idf = 0;
for (i = 0, max = VA_Get_Size(terms); i < max; i++) {
Obj *term = VA_Fetch(terms, i);
self->idf += Sim_IDF(sim, searchable, parent->field, term);
}
/* Calculate raw weight. */
self->raw_weight = self->idf * self->boost;
/* Make final preparations. */
PhraseCompiler_Normalize(self);
return self;
}
