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merged
configure.in: Auto merged mysql-test/Makefile.am: Auto merged mysql-test/r/fulltext.result: Auto merged sql/field.cc: Auto merged sql/ha_berkeley.cc: Auto merged sql/ha_innodb.cc: Auto merged sql/ha_innodb.h: Auto merged sql/handler.cc: Auto merged sql/handler.h: Auto merged sql/item_subselect.cc: Auto merged sql/lex.h: Auto merged sql/opt_range.cc: Auto merged sql/sql_acl.cc: Auto merged sql/sql_cache.cc: Auto merged sql/sql_delete.cc: Auto merged sql/sql_help.cc: Auto merged sql/sql_insert.cc: Auto merged sql/sql_select.cc: Auto merged sql/sql_table.cc: Auto merged sql/sql_update.cc: Auto merged sql/sql_yacc.yy: Auto merged sql/table.cc: Auto merged sql/unireg.cc: Auto merged
This commit is contained in:
unknown
236
sql/sql_help.cc
236
sql/sql_help.cc
@ -22,8 +22,6 @@ struct st_find_field
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Field *field;
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};
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static void free_select(SQL_SELECT *sel);
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/* Used fields */
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static struct st_find_field init_used_fields[]=
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@ -48,9 +46,9 @@ static struct st_find_field init_used_fields[]=
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enum enum_used_fields
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{
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help_topic_help_topic_id= 0,
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help_topic_name,
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help_topic_name,
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help_topic_help_category_id,
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help_topic_description,
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help_topic_description,
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help_topic_example,
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help_category_help_category_id,
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@ -60,13 +58,13 @@ enum enum_used_fields
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help_keyword_help_keyword_id,
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help_keyword_name,
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help_relation_help_topic_id,
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help_relation_help_topic_id,
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help_relation_help_keyword_id
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};
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/*
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Fill st_find_field structure with pointers to fields
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Fill st_find_field structure with pointers to fields
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SYNOPSIS
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init_fields()
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@ -90,7 +88,7 @@ static bool init_fields(THD *thd, TABLE_LIST *tables,
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/* We have to use 'new' here as field will be re_linked on free */
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Item_field *field= new Item_field("mysql", find_fields->table_name,
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find_fields->field_name);
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if (!(find_fields->field= find_field_in_tables(thd, field, tables,
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if (!(find_fields->field= find_field_in_tables(thd, field, tables,
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¬_used, TRUE)))
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DBUG_RETURN(1);
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}
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@ -119,12 +117,12 @@ static bool init_fields(THD *thd, TABLE_LIST *tables,
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NOTE
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Field 'names' is set only if more than one topic is found.
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Fields 'name', 'description', 'example' are set only if
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Fields 'name', 'description', 'example' are set only if
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found exactly one topic.
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*/
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void memorize_variant_topic(THD *thd, TABLE *topics, int count,
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struct st_find_field *find_fields,
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struct st_find_field *find_fields,
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List<String> *names,
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String *name, String *description, String *example)
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{
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@ -136,7 +134,7 @@ void memorize_variant_topic(THD *thd, TABLE *topics, int count,
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get_field(mem_root,find_fields[help_topic_description].field, description);
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get_field(mem_root,find_fields[help_topic_example].field, example);
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}
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else
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else
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{
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if (count == 1)
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names->push_back(name);
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@ -168,7 +166,7 @@ void memorize_variant_topic(THD *thd, TABLE *topics, int count,
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NOTE
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Field 'names' is set only if more than one topic was found.
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Fields 'name', 'description', 'example' are set only if
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Fields 'name', 'description', 'example' are set only if
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exactly one topic was found.
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*/
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@ -179,12 +177,12 @@ int search_topics(THD *thd, TABLE *topics, struct st_find_field *find_fields,
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{
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DBUG_ENTER("search_topics");
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int count= 0;
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READ_RECORD read_record_info;
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init_read_record(&read_record_info, thd, topics, select,1,0);
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while (!read_record_info.read_record(&read_record_info))
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{
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if (!select->cond->val_int()) // Dosn't match like
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if (!select->cond->val_int()) // Doesn't match like
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continue;
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memorize_variant_topic(thd,topics,count,find_fields,
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names,name,description,example);
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@ -219,7 +217,7 @@ int search_keyword(THD *thd, TABLE *keywords, struct st_find_field *find_fields,
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{
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DBUG_ENTER("search_keyword");
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int count= 0;
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READ_RECORD read_record_info;
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init_read_record(&read_record_info, thd, keywords, select,1,0);
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while (!read_record_info.read_record(&read_record_info) && count<2)
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@ -256,13 +254,13 @@ int search_keyword(THD *thd, TABLE *keywords, struct st_find_field *find_fields,
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description description of found topic (out)
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example example for found topic (out)
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NOTE
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NOTE
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Field 'names' is set only if more than one topic was found.
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Fields 'name', 'description', 'example' are set only if
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Fields 'name', 'description', 'example' are set only if
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exactly one topic was found.
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*/
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int get_topics_for_keyword(THD *thd, TABLE *topics, TABLE *relations,
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int get_topics_for_keyword(THD *thd, TABLE *topics, TABLE *relations,
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struct st_find_field *find_fields, int16 key_id,
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List<String> *names,
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String *name, String *description, String *example)
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@ -273,7 +271,7 @@ int get_topics_for_keyword(THD *thd, TABLE *topics, TABLE *relations,
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Field *rtopic_id, *rkey_id;
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DBUG_ENTER("get_topics_for_keyword");
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if ((iindex_topic= find_type((char*) primary_key_name,
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&topics->keynames, 1+2)-1)<0 ||
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(iindex_relations= find_type((char*) primary_key_name,
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@ -284,18 +282,18 @@ int get_topics_for_keyword(THD *thd, TABLE *topics, TABLE *relations,
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}
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rtopic_id= find_fields[help_relation_help_topic_id].field;
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rkey_id= find_fields[help_relation_help_keyword_id].field;
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topics->file->index_init(iindex_topic);
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relations->file->index_init(iindex_relations);
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topics->file->ha_index_init(iindex_topic);
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relations->file->ha_index_init(iindex_relations);
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rkey_id->store((longlong) key_id);
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rkey_id->get_key_image(buff, rkey_id->pack_length(), rkey_id->charset(),
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Field::itRAW);
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int key_res= relations->file->index_read(relations->record[0],
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(byte *)buff, rkey_id->pack_length(),
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HA_READ_KEY_EXACT);
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for ( ;
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for ( ;
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!key_res && key_id == (int16) rkey_id->val_int() ;
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key_res= relations->file->index_next(relations->record[0]))
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{
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@ -305,7 +303,7 @@ int get_topics_for_keyword(THD *thd, TABLE *topics, TABLE *relations,
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field->store((longlong) topic_id);
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field->get_key_image(topic_id_buff, field->pack_length(), field->charset(),
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Field::itRAW);
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if (!topics->file->index_read(topics->record[0], (byte *)topic_id_buff,
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field->pack_length(), HA_READ_KEY_EXACT))
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{
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@ -314,49 +312,11 @@ int get_topics_for_keyword(THD *thd, TABLE *topics, TABLE *relations,
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count++;
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}
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}
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topics->file->ha_index_end();
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relations->file->ha_index_end();
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DBUG_RETURN(count);
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}
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/*
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Look for topics with keyword by mask
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SYNOPSIS
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search_topics_by_keyword()
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thd Thread handler
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keywords Table of keywords
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topics Table of topics
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relations Table of m:m relation "topic/keyword"
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find_fields Filled array of info for fields
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select Function to test for if matching help keyword.
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Normally 'help_keyword.name like 'bit%'
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RETURN VALUES
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# number of topics found
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names array of name of found topics (out)
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name name of found topic (out)
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description description of found topic (out)
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example example for found topic (out)
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NOTE
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Field 'names' is set only if more than one topic was found.
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Fields 'name', 'description', 'example' are set only if
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exactly one topic was found.
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*/
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int search_topics_by_keyword(THD *thd,
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TABLE *keywords, TABLE *topics, TABLE *relations,
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struct st_find_field *find_fields,
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SQL_SELECT *select, List<String> *names,
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String *name, String *description, String *example)
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{
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int key_id;
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return search_keyword(thd,keywords,find_fields,select,&key_id)!=1
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? 0 : get_topics_for_keyword(thd,topics,relations,find_fields,key_id,
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names,name,description,example);
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}
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/*
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Look for categories by mask
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@ -382,10 +342,10 @@ int search_categories(THD *thd, TABLE *categories,
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Field *pfname= find_fields[help_category_name].field;
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Field *pcat_id= find_fields[help_category_help_category_id].field;
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int count= 0;
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READ_RECORD read_record_info;
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READ_RECORD read_record_info;
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DBUG_ENTER("search_categories");
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init_read_record(&read_record_info, thd, categories, select,1,0);
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while (!read_record_info.read_record(&read_record_info))
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{
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@ -398,7 +358,7 @@ int search_categories(THD *thd, TABLE *categories,
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names->push_back(lname);
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}
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end_read_record(&read_record_info);
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DBUG_RETURN(count);
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}
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@ -423,7 +383,7 @@ void get_all_items_for_category(THD *thd, TABLE *items, Field *pfname,
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init_read_record(&read_record_info, thd, items, select,1,0);
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while (!read_record_info.read_record(&read_record_info))
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{
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if (!select->cond->val_int())
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if (!select->cond->val_int())
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continue;
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String *name= new (&thd->mem_root) String();
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get_field(&thd->mem_root,pfname,name);
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@ -436,7 +396,7 @@ void get_all_items_for_category(THD *thd, TABLE *items, Field *pfname,
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/*
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Send to client answer for help request
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SYNOPSIS
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send_answer_1()
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protocol - protocol for sending
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@ -466,10 +426,10 @@ int send_answer_1(Protocol *protocol, String *s1, String *s2, String *s3)
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field_list.push_back(new Item_empty_string("name",64));
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field_list.push_back(new Item_empty_string("description",1000));
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field_list.push_back(new Item_empty_string("example",1000));
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if (protocol->send_fields(&field_list,1))
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DBUG_RETURN(1);
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protocol->prepare_for_resend();
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protocol->store(s1);
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protocol->store(s2);
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@ -539,7 +499,7 @@ extern "C" int string_ptr_cmp(const void* ptr1, const void* ptr2)
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SYNOPSIS
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send_variant_2_list()
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protocol Protocol for sending
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names List of names
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names List of names
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cat Value of the column <is_it_category>
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source_name name of category for all items..
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@ -548,8 +508,8 @@ extern "C" int string_ptr_cmp(const void* ptr1, const void* ptr2)
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0 Data was successefully send
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*/
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int send_variant_2_list(MEM_ROOT *mem_root, Protocol *protocol,
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List<String> *names,
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int send_variant_2_list(MEM_ROOT *mem_root, Protocol *protocol,
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List<String> *names,
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const char *cat, String *source_name)
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{
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DBUG_ENTER("send_variant_2_list");
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@ -589,17 +549,22 @@ int send_variant_2_list(MEM_ROOT *mem_root, Protocol *protocol,
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table goal table
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error code of error (out)
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RETURN VALUES
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# created SQL_SELECT
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# created SQL_SELECT
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*/
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SQL_SELECT *prepare_simple_select(THD *thd, Item *cond, TABLE_LIST *tables,
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SQL_SELECT *prepare_simple_select(THD *thd, Item *cond, TABLE_LIST *tables,
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TABLE *table, int *error)
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{
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cond->fix_fields(thd, tables, &cond); // can never fail
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SQL_SELECT *res= make_select(table,0,0,cond,error);
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return (*error || (res && res->check_quick(thd, 0, HA_POS_ERROR))) ? 0 : res;
|
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if (*error || (res && res->check_quick(thd, 0, HA_POS_ERROR)))
|
||||
{
|
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delete res;
|
||||
res=0;
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -615,9 +580,9 @@ SQL_SELECT *prepare_simple_select(THD *thd, Item *cond, TABLE_LIST *tables,
|
||||
pfname field "name" in table
|
||||
|
||||
error code of error (out)
|
||||
|
||||
|
||||
RETURN VALUES
|
||||
# created SQL_SELECT
|
||||
# created SQL_SELECT
|
||||
*/
|
||||
|
||||
SQL_SELECT *prepare_select_for_name(THD *thd, const char *mask, uint mlen,
|
||||
@ -649,12 +614,10 @@ SQL_SELECT *prepare_select_for_name(THD *thd, const char *mask, uint mlen,
|
||||
int mysqld_help(THD *thd, const char *mask)
|
||||
{
|
||||
Protocol *protocol= thd->protocol;
|
||||
SQL_SELECT *select_topics_by_name= 0, *select_keyword_by_name= 0,
|
||||
*select_cat_by_name= 0, *select_topics_by_cat= 0, *select_cat_by_cat= 0,
|
||||
*select_root_cats= 0;
|
||||
SQL_SELECT *select;
|
||||
st_find_field used_fields[array_elements(init_used_fields)];
|
||||
DBUG_ENTER("mysqld_help");
|
||||
|
||||
|
||||
TABLE_LIST tables[4];
|
||||
bzero((gptr)tables,sizeof(tables));
|
||||
tables[0].alias= tables[0].real_name= (char*) "help_topic";
|
||||
@ -670,13 +633,13 @@ int mysqld_help(THD *thd, const char *mask)
|
||||
tables[3].lock_type= TL_READ;
|
||||
tables[3].next= 0;
|
||||
tables[0].db= tables[1].db= tables[2].db= tables[3].db= (char*) "mysql";
|
||||
|
||||
|
||||
List<String> topics_list, categories_list, subcategories_list;
|
||||
String name, description, example;
|
||||
int res, count_topics, count_categories, error;
|
||||
uint mlen= strlen(mask);
|
||||
MEM_ROOT *mem_root= &thd->mem_root;
|
||||
|
||||
|
||||
if (open_and_lock_tables(thd, tables))
|
||||
{
|
||||
res= -1;
|
||||
@ -684,7 +647,7 @@ int mysqld_help(THD *thd, const char *mask)
|
||||
}
|
||||
/* Init tables and fields to be usable from items */
|
||||
setup_tables(tables);
|
||||
memcpy((char*) used_fields, (char*) init_used_fields, sizeof(used_fields));
|
||||
memcpy((char*) used_fields, (char*) init_used_fields, sizeof(used_fields));
|
||||
if (init_fields(thd, tables, used_fields, array_elements(used_fields)))
|
||||
{
|
||||
res= -1;
|
||||
@ -693,39 +656,55 @@ int mysqld_help(THD *thd, const char *mask)
|
||||
size_t i;
|
||||
for (i=0; i<sizeof(tables)/sizeof(TABLE_LIST); i++)
|
||||
tables[i].table->file->init_table_handle_for_HANDLER();
|
||||
|
||||
if (!(select_topics_by_name=
|
||||
|
||||
if (!(select=
|
||||
prepare_select_for_name(thd,mask,mlen,tables,tables[0].table,
|
||||
used_fields[help_topic_name].field,&error)) ||
|
||||
!(select_cat_by_name=
|
||||
prepare_select_for_name(thd,mask,mlen,tables,tables[1].table,
|
||||
used_fields[help_category_name].field,&error))||
|
||||
!(select_keyword_by_name=
|
||||
prepare_select_for_name(thd,mask,mlen,tables,tables[3].table,
|
||||
used_fields[help_keyword_name].field,&error)))
|
||||
used_fields[help_topic_name].field,&error)))
|
||||
{
|
||||
res= -1;
|
||||
goto end;
|
||||
}
|
||||
|
||||
res= 1;
|
||||
count_topics= search_topics(thd,tables[0].table,used_fields,
|
||||
select_topics_by_name,&topics_list,
|
||||
count_topics= search_topics(thd,tables[0].table,used_fields,
|
||||
select,&topics_list,
|
||||
&name, &description, &example);
|
||||
delete select;
|
||||
|
||||
if (count_topics == 0)
|
||||
count_topics= search_topics_by_keyword(thd,tables[3].table,tables[0].table,
|
||||
tables[2].table,used_fields,
|
||||
select_keyword_by_name,&topics_list,
|
||||
&name,&description,&example);
|
||||
|
||||
{
|
||||
int key_id;
|
||||
if (!(select=
|
||||
prepare_select_for_name(thd,mask,mlen,tables,tables[3].table,
|
||||
used_fields[help_keyword_name].field,&error)))
|
||||
{
|
||||
res= -1;
|
||||
goto end;
|
||||
}
|
||||
count_topics=search_keyword(thd,tables[3].table,used_fields,select,&key_id);
|
||||
delete select;
|
||||
count_topics= (count_topics != 1) ? 0 :
|
||||
get_topics_for_keyword(thd,tables[0].table,tables[2].table,
|
||||
used_fields,key_id,&topics_list,&name,
|
||||
&description,&example);
|
||||
}
|
||||
|
||||
if (count_topics == 0)
|
||||
{
|
||||
int16 category_id;
|
||||
Field *cat_cat_id= used_fields[help_category_parent_category_id].field;
|
||||
if (!(select=
|
||||
prepare_select_for_name(thd,mask,mlen,tables,tables[1].table,
|
||||
used_fields[help_category_name].field,&error)))
|
||||
{
|
||||
res= -1;
|
||||
goto end;
|
||||
}
|
||||
|
||||
count_categories= search_categories(thd, tables[1].table, used_fields,
|
||||
select_cat_by_name,
|
||||
select,
|
||||
&categories_list,&category_id);
|
||||
delete select;
|
||||
if (!count_categories)
|
||||
{
|
||||
if (send_header_2(protocol,FALSE))
|
||||
@ -746,22 +725,26 @@ int mysqld_help(THD *thd, const char *mask)
|
||||
Item *cond_cat_by_cat=
|
||||
new Item_func_equal(new Item_field(cat_cat_id),
|
||||
new Item_int((int32)category_id));
|
||||
if (!(select_topics_by_cat= prepare_simple_select(thd,cond_topic_by_cat,
|
||||
tables,tables[0].table,
|
||||
&error)) ||
|
||||
!(select_cat_by_cat=
|
||||
prepare_simple_select(thd,cond_cat_by_cat,tables,
|
||||
tables[1].table,&error)))
|
||||
if (!(select= prepare_simple_select(thd,cond_topic_by_cat,
|
||||
tables,tables[0].table,&error)))
|
||||
{
|
||||
res= -1;
|
||||
goto end;
|
||||
}
|
||||
get_all_items_for_category(thd,tables[0].table,
|
||||
used_fields[help_topic_name].field,
|
||||
select_topics_by_cat,&topics_list);
|
||||
select,&topics_list);
|
||||
delete select;
|
||||
if (!(select= prepare_simple_select(thd,cond_cat_by_cat,tables,
|
||||
tables[1].table,&error)))
|
||||
{
|
||||
res= -1;
|
||||
goto end;
|
||||
}
|
||||
get_all_items_for_category(thd,tables[1].table,
|
||||
used_fields[help_category_name].field,
|
||||
select_cat_by_cat,&subcategories_list);
|
||||
select,&subcategories_list);
|
||||
delete select;
|
||||
String *cat= categories_list.head();
|
||||
if (send_header_2(protocol, true) ||
|
||||
send_variant_2_list(mem_root,protocol,&topics_list, "N",cat) ||
|
||||
@ -780,30 +763,25 @@ int mysqld_help(THD *thd, const char *mask)
|
||||
if (send_header_2(protocol, FALSE) ||
|
||||
send_variant_2_list(mem_root,protocol, &topics_list, "N", 0))
|
||||
goto end;
|
||||
search_categories(thd, tables[1].table, used_fields,
|
||||
select_cat_by_name,&categories_list, 0);
|
||||
if (!(select=
|
||||
prepare_select_for_name(thd,mask,mlen,tables,tables[1].table,
|
||||
used_fields[help_category_name].field,&error)))
|
||||
{
|
||||
res= -1;
|
||||
goto end;
|
||||
}
|
||||
search_categories(thd, tables[1].table, used_fields,
|
||||
select,&categories_list, 0);
|
||||
delete select;
|
||||
/* Then send categories */
|
||||
if (send_variant_2_list(mem_root,protocol, &categories_list, "Y", 0))
|
||||
goto end;
|
||||
}
|
||||
res= 0;
|
||||
|
||||
|
||||
send_eof(thd);
|
||||
|
||||
end:
|
||||
free_select(select_topics_by_name);
|
||||
free_select(select_keyword_by_name);
|
||||
free_select(select_cat_by_name);
|
||||
free_select(select_topics_by_cat);
|
||||
free_select(select_cat_by_cat);
|
||||
free_select(select_root_cats);
|
||||
|
||||
DBUG_RETURN(res);
|
||||
}
|
||||
|
||||
|
||||
static void free_select(SQL_SELECT *sel)
|
||||
{
|
||||
if (sel)
|
||||
delete sel->quick;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user