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/*
Copyright(C) 2015-2018 Brazil
Copyright(C) 2020-2022 Sutou Kouhei <kou@clear-code.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include "grn.h"
#include "grn_db.h"
#include "grn_expr.h"
#include "grn_scorer.h"
#include <groonga/scorer.h>
grn_obj *
grn_scorer_matched_record_get_table(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->table;
}
grn_obj *
grn_scorer_matched_record_get_lexicon(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->lexicon;
}
grn_id
grn_scorer_matched_record_get_id(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->id;
}
grn_obj *
grn_scorer_matched_record_get_terms(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return &(record->terms);
}
grn_obj *
grn_scorer_matched_record_get_term_weights(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return &(record->term_weights);
}
uint32_t
grn_scorer_matched_record_get_total_term_weights(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->total_term_weights;
}
uint64_t
grn_scorer_matched_record_get_n_documents(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->n_documents;
}
uint32_t
grn_scorer_matched_record_get_n_occurrences(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->n_occurrences;
}
uint64_t
grn_scorer_matched_record_get_n_candidates(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->n_candidates;
}
uint32_t
grn_scorer_matched_record_get_n_tokens(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->n_tokens;
}
int
grn_scorer_matched_record_get_weight(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
return record->weight;
}
grn_obj *
grn_scorer_matched_record_get_arg(grn_ctx *ctx,
grn_scorer_matched_record *record,
unsigned int i)
{
grn_expr *expr;
grn_expr_code *codes_original;
uint32_t codes_curr_original;
grn_obj *arg;
if (!record->args_expr) {
return NULL;
}
expr = (grn_expr *)(record->args_expr);
/* TODO: support getting column value */
codes_original = expr->codes;
codes_curr_original = expr->codes_curr;
expr->codes += record->args_expr_offset;
expr->codes_curr = 1; /* TODO: support 1 or more codes */
arg = grn_expr_exec(ctx, (grn_obj *)expr, 0);
expr->codes_curr = codes_curr_original;
expr->codes = codes_original;
return arg;
}
unsigned int
grn_scorer_matched_record_get_n_args(grn_ctx *ctx,
grn_scorer_matched_record *record)
{
grn_expr *expr;
grn_expr_code *codes;
unsigned int n_args = 0;
if (!record->args_expr) {
return 0;
}
expr = (grn_expr *)(record->args_expr);
codes = expr->codes + record->args_expr_offset;
if (codes[0].op == GRN_OP_CALL) {
return 0;
}
n_args++;
for (; codes[0].op != GRN_OP_CALL; codes++) {
if (codes[0].op == GRN_OP_COMMA) {
n_args++;
}
}
return n_args;
}
grn_rc
grn_scorer_register(grn_ctx *ctx,
const char *scorer_name_ptr,
int scorer_name_length,
grn_scorer_score_func *score)
{
if (scorer_name_length == -1) {
scorer_name_length = (int)strlen(scorer_name_ptr);
}
{
grn_obj *scorer_object = grn_proc_create(ctx,
scorer_name_ptr,
scorer_name_length,
GRN_PROC_SCORER,
NULL, NULL, NULL, 0, NULL);
if (scorer_object == NULL) {
GRN_PLUGIN_ERROR(ctx, GRN_SCORER_ERROR,
"[scorer][%.*s] failed to grn_proc_create()",
scorer_name_length, scorer_name_ptr);
return ctx->rc;
}
{
grn_proc *scorer = (grn_proc *)scorer_object;
scorer->callbacks.scorer.score = score;
}
}
return GRN_SUCCESS;
}
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