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97acc4a1c3
InnoDB defines some functions that are not called at all. Other functions are called, but only from the same compilation unit. Remove some function declarations and definitions, and add 'static' keywords. Some symbols must be kept for separately compiled tools, such as innochecksum.
296 lines
8 KiB
C++
296 lines
8 KiB
C++
/*****************************************************************************
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Copyright (c) 2013, 2015, Oracle and/or its affiliates. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/******************************************************************//**
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@file fts/fts0plugin.cc
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Full Text Search plugin support.
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Created 2013/06/04 Shaohua Wang
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***********************************************************************/
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#include "fts0ast.h"
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#include "fts0plugin.h"
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#include "fts0tokenize.h"
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#include "ft_global.h"
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/******************************************************************//**
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FTS default parser init
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@return 0 */
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static
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int
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fts_default_parser_init(
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/*====================*/
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MYSQL_FTPARSER_PARAM *param) /*!< in: plugin parser param */
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{
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return(0);
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}
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/******************************************************************//**
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FTS default parser deinit
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@return 0 */
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static
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int
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fts_default_parser_deinit(
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/*======================*/
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MYSQL_FTPARSER_PARAM *param) /*!< in: plugin parser param */
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{
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return(0);
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}
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/******************************************************************//**
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FTS default parser parse from ft_static.c in MYISAM.
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@return 0 if parse successfully, or return non-zero */
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static
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int
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fts_default_parser_parse(
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/*=====================*/
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MYSQL_FTPARSER_PARAM *param) /*!< in: plugin parser param */
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{
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return(param->mysql_parse(param, param->doc, param->length));
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}
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/* FTS default parser from ft_static.c in MYISAM. */
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struct st_mysql_ftparser fts_default_parser =
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{
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MYSQL_FTPARSER_INTERFACE_VERSION,
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fts_default_parser_parse,
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fts_default_parser_init,
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fts_default_parser_deinit
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};
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/******************************************************************//**
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Get a operator node from token boolean info
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@return node */
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static
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fts_ast_node_t*
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fts_query_get_oper_node(
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/*====================*/
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MYSQL_FTPARSER_BOOLEAN_INFO* info, /*!< in: token info */
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fts_ast_state_t* state) /*!< in/out: query parse state*/
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{
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fts_ast_node_t* oper_node = NULL;
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if (info->yesno > 0) {
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oper_node = fts_ast_create_node_oper(state, FTS_EXIST);
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} else if (info->yesno < 0) {
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oper_node = fts_ast_create_node_oper(state, FTS_IGNORE);
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} else if (info->weight_adjust > 0) {
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oper_node = fts_ast_create_node_oper(state, FTS_INCR_RATING);
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} else if (info->weight_adjust < 0) {
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oper_node = fts_ast_create_node_oper(state, FTS_DECR_RATING);
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} else if (info->wasign > 0) {
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oper_node = fts_ast_create_node_oper(state, FTS_NEGATE);
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}
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return(oper_node);
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}
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/******************************************************************//**
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FTS plugin parser 'myql_add_word' callback function for query parse.
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Refer to 'st_mysql_ftparser_param' for more detail.
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Note:
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a. Parse logic refers to 'ftb_query_add_word' from ft_boolean_search.c in MYISAM;
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b. Parse node or tree refers to fts0pars.y.
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@return 0 if add successfully, or return non-zero. */
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static
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int
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fts_query_add_word_for_parser(
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/*==========================*/
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MYSQL_FTPARSER_PARAM* param, /*!< in: parser param */
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const char* word, /*!< in: token */
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int word_len, /*!< in: token length */
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MYSQL_FTPARSER_BOOLEAN_INFO* info) /*!< in: token info */
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{
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fts_ast_state_t* state =
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static_cast<fts_ast_state_t*>(param->mysql_ftparam);
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fts_ast_node_t* cur_node = state->cur_node;
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fts_ast_node_t* oper_node = NULL;
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fts_ast_node_t* term_node = NULL;
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fts_ast_node_t* node = NULL;
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switch (info->type) {
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case FT_TOKEN_STOPWORD:
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/* We only handler stopword in phrase */
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if (cur_node->type != FTS_AST_PARSER_PHRASE_LIST) {
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break;
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}
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case FT_TOKEN_WORD:
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term_node = fts_ast_create_node_term_for_parser(
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state, word, word_len);
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if (info->trunc) {
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fts_ast_term_set_wildcard(term_node);
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}
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if (cur_node->type == FTS_AST_PARSER_PHRASE_LIST) {
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/* Ignore operator inside phrase */
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fts_ast_add_node(cur_node, term_node);
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} else {
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ut_ad(cur_node->type == FTS_AST_LIST
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|| cur_node->type == FTS_AST_SUBEXP_LIST);
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oper_node = fts_query_get_oper_node(info, state);
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if (oper_node) {
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node = fts_ast_create_node_list(state, oper_node);
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fts_ast_add_node(node, term_node);
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fts_ast_add_node(cur_node, node);
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} else {
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fts_ast_add_node(cur_node, term_node);
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}
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}
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break;
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case FT_TOKEN_LEFT_PAREN:
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/* Check parse error */
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if (cur_node->type != FTS_AST_LIST
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&& cur_node->type != FTS_AST_SUBEXP_LIST) {
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return(1);
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}
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/* Set operator */
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oper_node = fts_query_get_oper_node(info, state);
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if (oper_node != NULL) {
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node = fts_ast_create_node_list(state, oper_node);
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fts_ast_add_node(cur_node, node);
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node->go_up = true;
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node->up_node = cur_node;
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cur_node = node;
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}
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if (info->quot) {
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/* Phrase node */
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node = fts_ast_create_node_phrase_list(state);
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} else {
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/* Subexp list node */
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node = fts_ast_create_node_subexp_list(state, NULL);
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}
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fts_ast_add_node(cur_node, node);
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node->up_node = cur_node;
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state->cur_node = node;
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state->depth += 1;
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break;
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case FT_TOKEN_RIGHT_PAREN:
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info->quot = 0;
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if (cur_node->up_node != NULL) {
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cur_node = cur_node->up_node;
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if (cur_node->go_up) {
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ut_a(cur_node->up_node
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&& !(cur_node->up_node->go_up));
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cur_node = cur_node->up_node;
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}
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}
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state->cur_node = cur_node;
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if (state->depth > 0) {
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state->depth--;
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} else {
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/* Parentheses mismatch */
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return(1);
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}
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break;
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case FT_TOKEN_EOF:
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default:
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break;
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}
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return(0);
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}
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/******************************************************************//**
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FTS plugin parser 'myql_parser' callback function for query parse.
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Refer to 'st_mysql_ftparser_param' for more detail.
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@return 0 if parse successfully */
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static
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int
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fts_parse_query_internal(
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/*=====================*/
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MYSQL_FTPARSER_PARAM* param, /*!< in: parser param */
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const char* query, /*!< in: query string */
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int len) /*!< in: query length */
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{
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MYSQL_FTPARSER_BOOLEAN_INFO info;
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const CHARSET_INFO* cs = param->cs;
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uchar** start = (uchar**)(&query);
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uchar* end = (uchar*)(query + len);
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FT_WORD w = {NULL, 0, 0};
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info.prev = ' ';
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info.quot = 0;
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memset(&w, 0, sizeof(w));
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/* Note: We don't handle simple parser mode here,
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but user supplied plugin parser should handler it. */
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while (fts_get_word(cs, start, end, &w, &info)) {
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int ret = param->mysql_add_word(
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param,
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reinterpret_cast<char*>(w.pos),
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w.len, &info);
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if (ret) {
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return(ret);
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}
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}
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return(0);
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}
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/******************************************************************//**
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fts parse query by plugin parser.
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@return 0 if parse successfully, or return non-zero. */
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int
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fts_parse_by_parser(
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/*================*/
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ibool mode, /*!< in: parse boolean mode */
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uchar* query_str, /*!< in: query string */
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ulint query_len, /*!< in: query string length */
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st_mysql_ftparser* parser, /*!< in: fts plugin parser */
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fts_ast_state_t* state) /*!< in/out: parser state */
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{
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MYSQL_FTPARSER_PARAM param;
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int ret;
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ut_ad(parser);
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/* Initial parser param */
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param.mysql_parse = fts_parse_query_internal;
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param.mysql_add_word = fts_query_add_word_for_parser;
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param.mysql_ftparam = static_cast<void*>(state);
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param.cs = state->charset;
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param.doc = reinterpret_cast<char*>(query_str);
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param.length = static_cast<int>(query_len);
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param.flags = 0;
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param.mode = mode ?
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MYSQL_FTPARSER_FULL_BOOLEAN_INFO :
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MYSQL_FTPARSER_SIMPLE_MODE;
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PARSER_INIT(parser, ¶m);
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ret = parser->parse(¶m);
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PARSER_DEINIT(parser, ¶m);
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return(ret | state->depth);
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}
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