dict0crea.c
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上传日期:2022-05-23
资源大小:18897k
文件大小:33k
- /******************************************************
- Database object creation
- (c) 1996 Innobase Oy
- Created 1/8/1996 Heikki Tuuri
- *******************************************************/
- #include "dict0crea.h"
- #ifdef UNIV_NONINL
- #include "dict0crea.ic"
- #endif
- #include "btr0pcur.h"
- #include "btr0btr.h"
- #include "page0page.h"
- #include "mach0data.h"
- #include "dict0boot.h"
- #include "dict0dict.h"
- #include "que0que.h"
- #include "row0ins.h"
- #include "row0mysql.h"
- #include "pars0pars.h"
- #include "trx0roll.h"
- #include "usr0sess.h"
- /*********************************************************************
- Based on a table object, this function builds the entry to be inserted
- in the SYS_TABLES system table. */
- static
- dtuple_t*
- dict_create_sys_tables_tuple(
- /*=========================*/
- /* out: the tuple which should be inserted */
- dict_table_t* table, /* in: table */
- mem_heap_t* heap) /* in: memory heap from which the memory for
- the built tuple is allocated */
- {
- dict_table_t* sys_tables;
- dtuple_t* entry;
- dfield_t* dfield;
- byte* ptr;
- ut_ad(table && heap);
- sys_tables = dict_sys->sys_tables;
-
- entry = dtuple_create(heap, 8 + DATA_N_SYS_COLS);
- /* 0: NAME -----------------------------*/
- dfield = dtuple_get_nth_field(entry, 0);
- dfield_set_data(dfield, table->name, ut_strlen(table->name));
- /* 3: ID -------------------------------*/
- dfield = dtuple_get_nth_field(entry, 1);
- ptr = mem_heap_alloc(heap, 8);
- mach_write_to_8(ptr, table->id);
- dfield_set_data(dfield, ptr, 8);
- /* 4: N_COLS ---------------------------*/
- dfield = dtuple_get_nth_field(entry, 2);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, table->n_def);
- dfield_set_data(dfield, ptr, 4);
- /* 5: TYPE -----------------------------*/
- dfield = dtuple_get_nth_field(entry, 3);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, table->type);
- dfield_set_data(dfield, ptr, 4);
- /* 6: MIX_ID ---------------------------*/
- dfield = dtuple_get_nth_field(entry, 4);
- ptr = mem_heap_alloc(heap, 8);
- mach_write_to_8(ptr, table->mix_id);
- dfield_set_data(dfield, ptr, 8);
- /* 7: MIX_LEN --------------------------*/
- /* Track corruption reported on mailing list Jan 14, 2005 */
- if (table->mix_len != 0 && table->mix_len != 0x80000000) {
- fprintf(stderr,
- "InnoDB: Error: mix_len is %lu in table %sn", (ulong)table->mix_len,
- table->name);
- mem_analyze_corruption((byte*)&(table->mix_len));
-
- ut_error;
- }
- dfield = dtuple_get_nth_field(entry, 5);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, table->mix_len);
- dfield_set_data(dfield, ptr, 4);
- /* 8: CLUSTER_NAME ---------------------*/
- dfield = dtuple_get_nth_field(entry, 6);
- if (table->type == DICT_TABLE_CLUSTER_MEMBER) {
- dfield_set_data(dfield, table->cluster_name,
- ut_strlen(table->cluster_name));
- ut_error; /* Oracle-style clusters are not supported yet */
- } else {
- dfield_set_data(dfield, NULL, UNIV_SQL_NULL);
- }
- /* 9: SPACE ----------------------------*/
- dfield = dtuple_get_nth_field(entry, 7);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, table->space);
- dfield_set_data(dfield, ptr, 4);
- /*----------------------------------*/
- dict_table_copy_types(entry, sys_tables);
-
- return(entry);
- }
- /*********************************************************************
- Based on a table object, this function builds the entry to be inserted
- in the SYS_COLUMNS system table. */
- static
- dtuple_t*
- dict_create_sys_columns_tuple(
- /*==========================*/
- /* out: the tuple which should be inserted */
- dict_table_t* table, /* in: table */
- ulint i, /* in: column number */
- mem_heap_t* heap) /* in: memory heap from which the memory for
- the built tuple is allocated */
- {
- dict_table_t* sys_columns;
- dtuple_t* entry;
- dict_col_t* column;
- dfield_t* dfield;
- byte* ptr;
- ut_ad(table && heap);
- column = dict_table_get_nth_col(table, i);
- sys_columns = dict_sys->sys_columns;
-
- entry = dtuple_create(heap, 7 + DATA_N_SYS_COLS);
- /* 0: TABLE_ID -----------------------*/
- dfield = dtuple_get_nth_field(entry, 0);
- ptr = mem_heap_alloc(heap, 8);
- mach_write_to_8(ptr, table->id);
- dfield_set_data(dfield, ptr, 8);
- /* 1: POS ----------------------------*/
- dfield = dtuple_get_nth_field(entry, 1);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, i);
- dfield_set_data(dfield, ptr, 4);
- /* 4: NAME ---------------------------*/
- dfield = dtuple_get_nth_field(entry, 2);
- dfield_set_data(dfield, column->name, ut_strlen(column->name));
- /* 5: MTYPE --------------------------*/
- dfield = dtuple_get_nth_field(entry, 3);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, (column->type).mtype);
- dfield_set_data(dfield, ptr, 4);
- /* 6: PRTYPE -------------------------*/
- dfield = dtuple_get_nth_field(entry, 4);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, (column->type).prtype);
- dfield_set_data(dfield, ptr, 4);
- /* 7: LEN ----------------------------*/
- dfield = dtuple_get_nth_field(entry, 5);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, (column->type).len);
- dfield_set_data(dfield, ptr, 4);
- /* 8: PREC ---------------------------*/
- dfield = dtuple_get_nth_field(entry, 6);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, (column->type).prec);
- dfield_set_data(dfield, ptr, 4);
- /*---------------------------------*/
- dict_table_copy_types(entry, sys_columns);
- return(entry);
- }
- /*******************************************************************
- Builds a table definition to insert. */
- static
- ulint
- dict_build_table_def_step(
- /*======================*/
- /* out: DB_SUCCESS or error code */
- que_thr_t* thr, /* in: query thread */
- tab_node_t* node) /* in: table create node */
- {
- dict_table_t* table;
- dict_table_t* cluster_table;
- dtuple_t* row;
- ulint error;
- const char* path_or_name;
- ibool is_path;
- mtr_t mtr;
- #ifdef UNIV_SYNC_DEBUG
- ut_ad(mutex_own(&(dict_sys->mutex)));
- #endif /* UNIV_SYNC_DEBUG */
- table = node->table;
- table->id = dict_hdr_get_new_id(DICT_HDR_TABLE_ID);
- thr_get_trx(thr)->table_id = table->id;
- if (table->type == DICT_TABLE_CLUSTER_MEMBER) {
- cluster_table = dict_table_get_low(table->cluster_name);
- if (cluster_table == NULL) {
-
- return(DB_CLUSTER_NOT_FOUND);
- }
- /* Inherit space and mix len from the cluster */
- table->space = cluster_table->space;
- table->mix_len = cluster_table->mix_len;
-
- table->mix_id = dict_hdr_get_new_id(DICT_HDR_MIX_ID);
- }
- if (srv_file_per_table) {
- /* We create a new single-table tablespace for the table.
- We initially let it be 4 pages:
- - page 0 is the fsp header and an extent descriptor page,
- - page 1 is an ibuf bitmap page,
- - page 2 is the first inode page,
- - page 3 will contain the root of the clustered index of the
- table we create here. */
-
- table->space = 0; /* reset to zero for the call below */
- if (table->dir_path_of_temp_table) {
- /* We place tables created with CREATE TEMPORARY
- TABLE in the tmp dir of mysqld server */
- path_or_name = table->dir_path_of_temp_table;
- is_path = TRUE;
- } else {
- path_or_name = table->name;
- is_path = FALSE;
- }
- error = fil_create_new_single_table_tablespace(
- &(table->space), path_or_name, is_path,
- FIL_IBD_FILE_INITIAL_SIZE);
- if (error != DB_SUCCESS) {
- return(error);
- }
- mtr_start(&mtr);
- fsp_header_init(table->space, FIL_IBD_FILE_INITIAL_SIZE, &mtr);
-
- mtr_commit(&mtr);
- }
- row = dict_create_sys_tables_tuple(table, node->heap);
- ins_node_set_new_row(node->tab_def, row);
- return(DB_SUCCESS);
- }
- /*******************************************************************
- Builds a column definition to insert. */
- static
- ulint
- dict_build_col_def_step(
- /*====================*/
- /* out: DB_SUCCESS */
- tab_node_t* node) /* in: table create node */
- {
- dtuple_t* row;
- row = dict_create_sys_columns_tuple(node->table, node->col_no,
- node->heap);
- ins_node_set_new_row(node->col_def, row);
-
- return(DB_SUCCESS);
- }
- /*********************************************************************
- Based on an index object, this function builds the entry to be inserted
- in the SYS_INDEXES system table. */
- static
- dtuple_t*
- dict_create_sys_indexes_tuple(
- /*==========================*/
- /* out: the tuple which should be inserted */
- dict_index_t* index, /* in: index */
- mem_heap_t* heap) /* in: memory heap from which the memory for
- the built tuple is allocated */
- {
- dict_table_t* sys_indexes;
- dict_table_t* table;
- dtuple_t* entry;
- dfield_t* dfield;
- byte* ptr;
- #ifdef UNIV_SYNC_DEBUG
- ut_ad(mutex_own(&(dict_sys->mutex)));
- #endif /* UNIV_SYNC_DEBUG */
- ut_ad(index && heap);
- sys_indexes = dict_sys->sys_indexes;
- table = dict_table_get_low(index->table_name);
-
- entry = dtuple_create(heap, 7 + DATA_N_SYS_COLS);
- /* 0: TABLE_ID -----------------------*/
- dfield = dtuple_get_nth_field(entry, 0);
- ptr = mem_heap_alloc(heap, 8);
- mach_write_to_8(ptr, table->id);
- dfield_set_data(dfield, ptr, 8);
- /* 1: ID ----------------------------*/
- dfield = dtuple_get_nth_field(entry, 1);
- ptr = mem_heap_alloc(heap, 8);
- mach_write_to_8(ptr, index->id);
- dfield_set_data(dfield, ptr, 8);
- /* 4: NAME --------------------------*/
- dfield = dtuple_get_nth_field(entry, 2);
- dfield_set_data(dfield, index->name, ut_strlen(index->name));
- /* 5: N_FIELDS ----------------------*/
- dfield = dtuple_get_nth_field(entry, 3);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, index->n_fields);
- dfield_set_data(dfield, ptr, 4);
- /* 6: TYPE --------------------------*/
- dfield = dtuple_get_nth_field(entry, 4);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, index->type);
- dfield_set_data(dfield, ptr, 4);
- /* 7: SPACE --------------------------*/
- #if DICT_SYS_INDEXES_SPACE_NO_FIELD != 7
- #error "DICT_SYS_INDEXES_SPACE_NO_FIELD != 7"
- #endif
- dfield = dtuple_get_nth_field(entry, 5);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, index->space);
- dfield_set_data(dfield, ptr, 4);
- /* 8: PAGE_NO --------------------------*/
- #if DICT_SYS_INDEXES_PAGE_NO_FIELD != 8
- #error "DICT_SYS_INDEXES_PAGE_NO_FIELD != 8"
- #endif
- dfield = dtuple_get_nth_field(entry, 6);
- ptr = mem_heap_alloc(heap, 4);
- mach_write_to_4(ptr, FIL_NULL);
- dfield_set_data(dfield, ptr, 4);
- /*--------------------------------*/
- dict_table_copy_types(entry, sys_indexes);
- return(entry);
- }
- /*********************************************************************
- Based on an index object, this function builds the entry to be inserted
- in the SYS_FIELDS system table. */
- static
- dtuple_t*
- dict_create_sys_fields_tuple(
- /*=========================*/
- /* out: the tuple which should be inserted */
- dict_index_t* index, /* in: index */
- ulint i, /* in: field number */
- mem_heap_t* heap) /* in: memory heap from which the memory for
- the built tuple is allocated */
- {
- dict_table_t* sys_fields;
- dtuple_t* entry;
- dict_field_t* field;
- dfield_t* dfield;
- byte* ptr;
- ibool index_contains_column_prefix_field = FALSE;
- ulint j;
- ut_ad(index && heap);
- for (j = 0; j < index->n_fields; j++) {
- if (dict_index_get_nth_field(index, j)->prefix_len > 0) {
- index_contains_column_prefix_field = TRUE;
- }
- }
- field = dict_index_get_nth_field(index, i);
- sys_fields = dict_sys->sys_fields;
-
- entry = dtuple_create(heap, 3 + DATA_N_SYS_COLS);
- /* 0: INDEX_ID -----------------------*/
- dfield = dtuple_get_nth_field(entry, 0);
- ptr = mem_heap_alloc(heap, 8);
- mach_write_to_8(ptr, index->id);
- dfield_set_data(dfield, ptr, 8);
- /* 1: POS + PREFIX LENGTH ----------------------------*/
- dfield = dtuple_get_nth_field(entry, 1);
- ptr = mem_heap_alloc(heap, 4);
-
- if (index_contains_column_prefix_field) {
- /* If there are column prefix fields in the index, then
- we store the number of the field to the 2 HIGH bytes
- and the prefix length to the 2 low bytes, */
- mach_write_to_4(ptr, (i << 16) + field->prefix_len);
- } else {
- /* Else we store the number of the field to the 2 LOW bytes.
- This is to keep the storage format compatible with
- InnoDB versions < 4.0.14. */
-
- mach_write_to_4(ptr, i);
- }
- dfield_set_data(dfield, ptr, 4);
- /* 4: COL_NAME -------------------------*/
- dfield = dtuple_get_nth_field(entry, 2);
- dfield_set_data(dfield, field->name,
- ut_strlen(field->name));
- /*---------------------------------*/
- dict_table_copy_types(entry, sys_fields);
-
- return(entry);
- }
- /*********************************************************************
- Creates the tuple with which the index entry is searched for writing the index
- tree root page number, if such a tree is created. */
- static
- dtuple_t*
- dict_create_search_tuple(
- /*=====================*/
- /* out: the tuple for search */
- dtuple_t* tuple, /* in: the tuple inserted in the SYS_INDEXES
- table */
- mem_heap_t* heap) /* in: memory heap from which the memory for
- the built tuple is allocated */
- {
- dtuple_t* search_tuple;
- dfield_t* field1;
- dfield_t* field2;
- ut_ad(tuple && heap);
- search_tuple = dtuple_create(heap, 2);
- field1 = dtuple_get_nth_field(tuple, 0);
- field2 = dtuple_get_nth_field(search_tuple, 0);
- dfield_copy(field2, field1);
- field1 = dtuple_get_nth_field(tuple, 1);
- field2 = dtuple_get_nth_field(search_tuple, 1);
- dfield_copy(field2, field1);
- ut_ad(dtuple_validate(search_tuple));
- return(search_tuple);
- }
- /*******************************************************************
- Builds an index definition row to insert. */
- static
- ulint
- dict_build_index_def_step(
- /*======================*/
- /* out: DB_SUCCESS or error code */
- que_thr_t* thr, /* in: query thread */
- ind_node_t* node) /* in: index create node */
- {
- dict_table_t* table;
- dict_index_t* index;
- dtuple_t* row;
- trx_t* trx;
- #ifdef UNIV_SYNC_DEBUG
- ut_ad(mutex_own(&(dict_sys->mutex)));
- #endif /* UNIV_SYNC_DEBUG */
- trx = thr_get_trx(thr);
- index = node->index;
- table = dict_table_get_low(index->table_name);
- if (table == NULL) {
- return(DB_TABLE_NOT_FOUND);
- }
- trx->table_id = table->id;
- node->table = table;
- ut_ad((UT_LIST_GET_LEN(table->indexes) > 0)
- || (index->type & DICT_CLUSTERED));
-
- index->id = dict_hdr_get_new_id(DICT_HDR_INDEX_ID);
- /* Inherit the space id from the table; we store all indexes of a
- table in the same tablespace */
- index->space = table->space;
- index->page_no = FIL_NULL;
-
- row = dict_create_sys_indexes_tuple(index, node->heap);
- node->ind_row = row;
- ins_node_set_new_row(node->ind_def, row);
- return(DB_SUCCESS);
- }
- /*******************************************************************
- Builds a field definition row to insert. */
- static
- ulint
- dict_build_field_def_step(
- /*======================*/
- /* out: DB_SUCCESS */
- ind_node_t* node) /* in: index create node */
- {
- dict_index_t* index;
- dtuple_t* row;
- index = node->index;
-
- row = dict_create_sys_fields_tuple(index, node->field_no, node->heap);
- ins_node_set_new_row(node->field_def, row);
- return(DB_SUCCESS);
- }
- /*******************************************************************
- Creates an index tree for the index if it is not a member of a cluster. */
- static
- ulint
- dict_create_index_tree_step(
- /*========================*/
- /* out: DB_SUCCESS or DB_OUT_OF_FILE_SPACE */
- ind_node_t* node) /* in: index create node */
- {
- dict_index_t* index;
- dict_table_t* sys_indexes;
- dict_table_t* table;
- dtuple_t* search_tuple;
- btr_pcur_t pcur;
- mtr_t mtr;
- #ifdef UNIV_SYNC_DEBUG
- ut_ad(mutex_own(&(dict_sys->mutex)));
- #endif /* UNIV_SYNC_DEBUG */
- index = node->index;
- table = node->table;
- sys_indexes = dict_sys->sys_indexes;
- if (index->type & DICT_CLUSTERED
- && table->type == DICT_TABLE_CLUSTER_MEMBER) {
- /* Do not create a new index tree: entries are put to the
- cluster tree */
- return(DB_SUCCESS);
- }
- /* Run a mini-transaction in which the index tree is allocated for
- the index and its root address is written to the index entry in
- sys_indexes */
- mtr_start(&mtr);
- search_tuple = dict_create_search_tuple(node->ind_row, node->heap);
-
- btr_pcur_open(UT_LIST_GET_FIRST(sys_indexes->indexes),
- search_tuple, PAGE_CUR_L, BTR_MODIFY_LEAF,
- &pcur, &mtr);
- btr_pcur_move_to_next_user_rec(&pcur, &mtr);
- index->page_no = btr_create(index->type, index->space, index->id,
- &mtr);
- /* printf("Created a new index tree in space %lu root page %lun",
- index->space, index->page_no); */
- page_rec_write_index_page_no(btr_pcur_get_rec(&pcur),
- DICT_SYS_INDEXES_PAGE_NO_FIELD,
- index->page_no, &mtr);
- btr_pcur_close(&pcur);
- mtr_commit(&mtr);
- if (index->page_no == FIL_NULL) {
- return(DB_OUT_OF_FILE_SPACE);
- }
- return(DB_SUCCESS);
- }
- /***********************************************************************
- Drops the index tree associated with a row in SYS_INDEXES table. */
- void
- dict_drop_index_tree(
- /*=================*/
- rec_t* rec, /* in: record in the clustered index of SYS_INDEXES
- table */
- mtr_t* mtr) /* in: mtr having the latch on the record page */
- {
- ulint root_page_no;
- ulint space;
- byte* ptr;
- ulint len;
-
- #ifdef UNIV_SYNC_DEBUG
- ut_ad(mutex_own(&(dict_sys->mutex)));
- #endif /* UNIV_SYNC_DEBUG */
-
- ptr = rec_get_nth_field(rec, DICT_SYS_INDEXES_PAGE_NO_FIELD, &len);
- ut_ad(len == 4);
-
- root_page_no = mtr_read_ulint(ptr, MLOG_4BYTES, mtr);
- if (root_page_no == FIL_NULL) {
- /* The tree has already been freed */
- return;
- }
- ptr = rec_get_nth_field(rec, DICT_SYS_INDEXES_SPACE_NO_FIELD, &len);
-
- ut_ad(len == 4);
- space = mtr_read_ulint(ptr, MLOG_4BYTES, mtr);
- if (!fil_tablespace_exists_in_mem(space)) {
- /* It is a single table tablespace and the .ibd file is
- missing: do nothing */
- return;
- }
- /* We free all the pages but the root page first; this operation
- may span several mini-transactions */
- btr_free_but_not_root(space, root_page_no);
- /* Then we free the root page in the same mini-transaction where
- we write FIL_NULL to the appropriate field in the SYS_INDEXES
- record: this mini-transaction marks the B-tree totally freed */
-
- /* printf("Dropping index tree in space %lu root page %lun", space,
- root_page_no); */
- btr_free_root(space, root_page_no, mtr);
- page_rec_write_index_page_no(rec, DICT_SYS_INDEXES_PAGE_NO_FIELD,
- FIL_NULL, mtr);
- }
- /*************************************************************************
- Creates a table create graph. */
- tab_node_t*
- tab_create_graph_create(
- /*====================*/
- /* out, own: table create node */
- dict_table_t* table, /* in: table to create, built as a memory data
- structure */
- mem_heap_t* heap) /* in: heap where created */
- {
- tab_node_t* node;
- node = mem_heap_alloc(heap, sizeof(tab_node_t));
-
- node->common.type = QUE_NODE_CREATE_TABLE;
- node->table = table;
- node->state = TABLE_BUILD_TABLE_DEF;
- node->heap = mem_heap_create(256);
- node->tab_def = ins_node_create(INS_DIRECT, dict_sys->sys_tables,
- heap);
- node->tab_def->common.parent = node;
-
- node->col_def = ins_node_create(INS_DIRECT, dict_sys->sys_columns,
- heap);
- node->col_def->common.parent = node;
- node->commit_node = commit_node_create(heap);
- node->commit_node->common.parent = node;
- return(node);
- }
- /*************************************************************************
- Creates an index create graph. */
- ind_node_t*
- ind_create_graph_create(
- /*====================*/
- /* out, own: index create node */
- dict_index_t* index, /* in: index to create, built as a memory data
- structure */
- mem_heap_t* heap) /* in: heap where created */
- {
- ind_node_t* node;
- node = mem_heap_alloc(heap, sizeof(ind_node_t));
- node->common.type = QUE_NODE_CREATE_INDEX;
- node->index = index;
- node->state = INDEX_BUILD_INDEX_DEF;
- node->heap = mem_heap_create(256);
- node->ind_def = ins_node_create(INS_DIRECT,
- dict_sys->sys_indexes, heap);
- node->ind_def->common.parent = node;
- node->field_def = ins_node_create(INS_DIRECT,
- dict_sys->sys_fields, heap);
- node->field_def->common.parent = node;
- node->commit_node = commit_node_create(heap);
- node->commit_node->common.parent = node;
- return(node);
- }
- /***************************************************************
- Creates a table. This is a high-level function used in SQL execution graphs. */
- que_thr_t*
- dict_create_table_step(
- /*===================*/
- /* out: query thread to run next or NULL */
- que_thr_t* thr) /* in: query thread */
- {
- tab_node_t* node;
- ulint err = DB_ERROR;
- trx_t* trx;
- ut_ad(thr);
- #ifdef UNIV_SYNC_DEBUG
- ut_ad(mutex_own(&(dict_sys->mutex)));
- #endif /* UNIV_SYNC_DEBUG */
- trx = thr_get_trx(thr);
-
- node = thr->run_node;
- ut_ad(que_node_get_type(node) == QUE_NODE_CREATE_TABLE);
- if (thr->prev_node == que_node_get_parent(node)) {
- node->state = TABLE_BUILD_TABLE_DEF;
- }
- if (node->state == TABLE_BUILD_TABLE_DEF) {
- /* DO THE CHECKS OF THE CONSISTENCY CONSTRAINTS HERE */
- err = dict_build_table_def_step(thr, node);
- if (err != DB_SUCCESS) {
- goto function_exit;
- }
-
- node->state = TABLE_BUILD_COL_DEF;
- node->col_no = 0;
- thr->run_node = node->tab_def;
- return(thr);
- }
- if (node->state == TABLE_BUILD_COL_DEF) {
- if (node->col_no < (node->table)->n_def) {
- err = dict_build_col_def_step(node);
- if (err != DB_SUCCESS) {
- goto function_exit;
- }
- node->col_no++;
-
- thr->run_node = node->col_def;
- return(thr);
- } else {
- node->state = TABLE_COMMIT_WORK;
- }
- }
- if (node->state == TABLE_COMMIT_WORK) {
- /* Table was correctly defined: do NOT commit the transaction
- (CREATE TABLE does NOT do an implicit commit of the current
- transaction) */
-
- node->state = TABLE_ADD_TO_CACHE;
- /* thr->run_node = node->commit_node;
- return(thr); */
- }
- if (node->state == TABLE_ADD_TO_CACHE) {
- dict_table_add_to_cache(node->table);
- err = DB_SUCCESS;
- }
- function_exit:
- trx->error_state = err;
- if (err == DB_SUCCESS) {
- /* Ok: do nothing */
- } else if (err == DB_LOCK_WAIT) {
- return(NULL);
- } else {
- /* SQL error detected */
- return(NULL);
- }
- thr->run_node = que_node_get_parent(node);
- return(thr);
- }
- /***************************************************************
- Creates an index. This is a high-level function used in SQL execution
- graphs. */
- que_thr_t*
- dict_create_index_step(
- /*===================*/
- /* out: query thread to run next or NULL */
- que_thr_t* thr) /* in: query thread */
- {
- ind_node_t* node;
- ibool success;
- ulint err = DB_ERROR;
- trx_t* trx;
- ut_ad(thr);
- #ifdef UNIV_SYNC_DEBUG
- ut_ad(mutex_own(&(dict_sys->mutex)));
- #endif /* UNIV_SYNC_DEBUG */
- trx = thr_get_trx(thr);
-
- node = thr->run_node;
- ut_ad(que_node_get_type(node) == QUE_NODE_CREATE_INDEX);
- if (thr->prev_node == que_node_get_parent(node)) {
- node->state = INDEX_BUILD_INDEX_DEF;
- }
- if (node->state == INDEX_BUILD_INDEX_DEF) {
- /* DO THE CHECKS OF THE CONSISTENCY CONSTRAINTS HERE */
- err = dict_build_index_def_step(thr, node);
- if (err != DB_SUCCESS) {
- goto function_exit;
- }
-
- node->state = INDEX_BUILD_FIELD_DEF;
- node->field_no = 0;
- thr->run_node = node->ind_def;
- return(thr);
- }
- if (node->state == INDEX_BUILD_FIELD_DEF) {
- if (node->field_no < (node->index)->n_fields) {
- err = dict_build_field_def_step(node);
- if (err != DB_SUCCESS) {
- goto function_exit;
- }
- node->field_no++;
-
- thr->run_node = node->field_def;
- return(thr);
- } else {
- node->state = INDEX_CREATE_INDEX_TREE;
- }
- }
- if (node->state == INDEX_CREATE_INDEX_TREE) {
- err = dict_create_index_tree_step(node);
- if (err != DB_SUCCESS) {
- goto function_exit;
- }
- node->state = INDEX_COMMIT_WORK;
- }
- if (node->state == INDEX_COMMIT_WORK) {
- /* Index was correctly defined: do NOT commit the transaction
- (CREATE INDEX does NOT currently do an implicit commit of
- the current transaction) */
-
- node->state = INDEX_ADD_TO_CACHE;
- /* thr->run_node = node->commit_node;
- return(thr); */
- }
- if (node->state == INDEX_ADD_TO_CACHE) {
- success = dict_index_add_to_cache(node->table, node->index);
- ut_a(success);
- err = DB_SUCCESS;
- }
- function_exit:
- trx->error_state = err;
- if (err == DB_SUCCESS) {
- /* Ok: do nothing */
- } else if (err == DB_LOCK_WAIT) {
- return(NULL);
- } else {
- /* SQL error detected */
- return(NULL);
- }
- thr->run_node = que_node_get_parent(node);
- return(thr);
- }
- /********************************************************************
- Creates the foreign key constraints system tables inside InnoDB
- at database creation or database start if they are not found or are
- not of the right form. */
- ulint
- dict_create_or_check_foreign_constraint_tables(void)
- /*================================================*/
- /* out: DB_SUCCESS or error code */
- {
- dict_table_t* table1;
- dict_table_t* table2;
- que_thr_t* thr;
- que_t* graph;
- ulint error;
- trx_t* trx;
- const char* str;
- mutex_enter(&(dict_sys->mutex));
- table1 = dict_table_get_low("SYS_FOREIGN");
- table2 = dict_table_get_low("SYS_FOREIGN_COLS");
-
- if (table1 && table2
- && UT_LIST_GET_LEN(table1->indexes) == 3
- && UT_LIST_GET_LEN(table2->indexes) == 1) {
- /* Foreign constraint system tables have already been
- created, and they are ok */
- mutex_exit(&(dict_sys->mutex));
- return(DB_SUCCESS);
- }
- mutex_exit(&(dict_sys->mutex));
- trx = trx_allocate_for_mysql();
-
- trx->op_info = "creating foreign key sys tables";
- row_mysql_lock_data_dictionary(trx);
- if (table1) {
- fprintf(stderr,
- "InnoDB: dropping incompletely created SYS_FOREIGN tablen");
- row_drop_table_for_mysql("SYS_FOREIGN", trx, TRUE);
- }
- if (table2) {
- fprintf(stderr,
- "InnoDB: dropping incompletely created SYS_FOREIGN_COLS tablen");
- row_drop_table_for_mysql("SYS_FOREIGN_COLS", trx, TRUE);
- }
- fprintf(stderr,
- "InnoDB: Creating foreign key constraint system tablesn");
- /* NOTE: in dict_load_foreigns we use the fact that
- there are 2 secondary indexes on SYS_FOREIGN, and they
- are defined just like below */
-
- /* NOTE: when designing InnoDB's foreign key support in 2001, we made
- an error and made the table names and the foreign key id of type
- 'CHAR' (internally, really a VARCHAR). We should have made the type
- VARBINARY, like in other InnoDB system tables, to get a clean
- design. */
- str =
- "PROCEDURE CREATE_FOREIGN_SYS_TABLES_PROC () ISn"
- "BEGINn"
- "CREATE TABLEn"
- "SYS_FOREIGN(ID CHAR, FOR_NAME CHAR, REF_NAME CHAR, N_COLS INT);n"
- "CREATE UNIQUE CLUSTERED INDEX ID_IND ON SYS_FOREIGN (ID);n"
- "CREATE INDEX FOR_IND ON SYS_FOREIGN (FOR_NAME);n"
- "CREATE INDEX REF_IND ON SYS_FOREIGN (REF_NAME);n"
- "CREATE TABLEn"
- "SYS_FOREIGN_COLS(ID CHAR, POS INT, FOR_COL_NAME CHAR, REF_COL_NAME CHAR);n"
- "CREATE UNIQUE CLUSTERED INDEX ID_IND ON SYS_FOREIGN_COLS (ID, POS);n"
- "COMMIT WORK;n"
- "END;n";
- graph = pars_sql(str);
- ut_a(graph);
- graph->trx = trx;
- trx->graph = NULL;
- graph->fork_type = QUE_FORK_MYSQL_INTERFACE;
- ut_a(thr = que_fork_start_command(graph));
- que_run_threads(thr);
- error = trx->error_state;
- if (error != DB_SUCCESS) {
- fprintf(stderr, "InnoDB: error %lu in creationn",
- (ulong) error);
-
- ut_a(error == DB_OUT_OF_FILE_SPACE);
- fprintf(stderr, "InnoDB: creation failedn");
- fprintf(stderr, "InnoDB: tablespace is fulln");
- fprintf(stderr,
- "InnoDB: dropping incompletely created SYS_FOREIGN tablesn");
- row_drop_table_for_mysql("SYS_FOREIGN", trx, TRUE);
- row_drop_table_for_mysql("SYS_FOREIGN_COLS", trx, TRUE);
- error = DB_MUST_GET_MORE_FILE_SPACE;
- }
- que_graph_free(graph);
-
- trx->op_info = "";
- row_mysql_unlock_data_dictionary(trx);
- trx_free_for_mysql(trx);
- if (error == DB_SUCCESS) {
- fprintf(stderr,
- "InnoDB: Foreign key constraint system tables createdn");
- }
- return(error);
- }
- /************************************************************************
- Adds foreign key definitions to data dictionary tables in the database. We
- look at table->foreign_list, and also generate names to constraints that were
- not named by the user. A generated constraint has a name of the format
- databasename/tablename_ibfk_<number>, where the numbers start from 1, and are
- given locally for this table, that is, the number is not global, as in the
- old format constraints < 4.0.18 it used to be. */
- ulint
- dict_create_add_foreigns_to_dictionary(
- /*===================================*/
- /* out: error code or DB_SUCCESS */
- ulint start_id,/* in: if we are actually doing ALTER TABLE
- ADD CONSTRAINT, we want to generate constraint
- numbers which are bigger than in the table so
- far; we number the constraints from
- start_id + 1 up; start_id should be set to 0 if
- we are creating a new table, or if the table
- so far has no constraints for which the name
- was generated here */
- dict_table_t* table, /* in: table */
- trx_t* trx) /* in: transaction */
- {
- dict_foreign_t* foreign;
- que_thr_t* thr;
- que_t* graph;
- ulint number = start_id + 1;
- ulint len;
- ulint error;
- FILE* ef = dict_foreign_err_file;
- ulint i;
- char* sql;
- char* sqlend;
- /* This procedure builds an InnoDB stored procedure which will insert
- the necessary rows into SYS_FOREIGN and SYS_FOREIGN_COLS. */
- static const char str1[] = "PROCEDURE ADD_FOREIGN_DEFS_PROC () ISn"
- "BEGINn"
- "INSERT INTO SYS_FOREIGN VALUES(";
- static const char str2[] = ");n";
- static const char str3[] =
- "INSERT INTO SYS_FOREIGN_COLS VALUES(";
- static const char str4[] =
- "COMMIT WORK;n"
- "END;n";
- #ifdef UNIV_SYNC_DEBUG
- ut_ad(mutex_own(&(dict_sys->mutex)));
- #endif /* UNIV_SYNC_DEBUG */
- if (NULL == dict_table_get_low("SYS_FOREIGN")) {
- fprintf(stderr,
- "InnoDB: table SYS_FOREIGN not found from internal data dictionaryn");
- return(DB_ERROR);
- }
- foreign = UT_LIST_GET_FIRST(table->foreign_list);
- loop:
- if (foreign == NULL) {
- return(DB_SUCCESS);
- }
- if (foreign->id == NULL) {
- /* Generate a new constraint id */
- ulint namelen = strlen(table->name);
- char* id = mem_heap_alloc(foreign->heap, namelen + 20);
- /* no overflow if number < 1e13 */
- sprintf(id, "%s_ibfk_%lu", table->name, (ulong) number++);
- foreign->id = id;
- }
- len = (sizeof str1) + (sizeof str2) + (sizeof str4) - 3
- + 9/* ' and , chars */ + 10/* 32-bit integer */
- + ut_strlenq(foreign->id, ''') * (foreign->n_fields + 1)
- + ut_strlenq(table->name, ''')
- + ut_strlenq(foreign->referenced_table_name, ''');
- for (i = 0; i < foreign->n_fields; i++) {
- len += 9/* ' and , chars */ + 10/* 32-bit integer */
- + (sizeof str3) + (sizeof str2) - 2
- + ut_strlenq(foreign->foreign_col_names[i], ''')
- + ut_strlenq(foreign->referenced_col_names[i], ''');
- }
- sql = sqlend = mem_alloc(len + 1);
- /* INSERT INTO SYS_FOREIGN VALUES(...); */
- memcpy(sqlend, str1, (sizeof str1) - 1);
- sqlend += (sizeof str1) - 1;
- *sqlend++ = ''';
- sqlend = ut_strcpyq(sqlend, ''', foreign->id);
- *sqlend++ = ''', *sqlend++ = ',', *sqlend++ = ''';
- sqlend = ut_strcpyq(sqlend, ''', table->name);
- *sqlend++ = ''', *sqlend++ = ',', *sqlend++ = ''';
- sqlend = ut_strcpyq(sqlend, ''', foreign->referenced_table_name);
- *sqlend++ = ''', *sqlend++ = ',';
- sqlend += sprintf(sqlend, "%010lu",
- foreign->n_fields + (foreign->type << 24));
- memcpy(sqlend, str2, (sizeof str2) - 1);
- sqlend += (sizeof str2) - 1;
- for (i = 0; i < foreign->n_fields; i++) {
- /* INSERT INTO SYS_FOREIGN_COLS VALUES(...); */
- memcpy(sqlend, str3, (sizeof str3) - 1);
- sqlend += (sizeof str3) - 1;
- *sqlend++ = ''';
- sqlend = ut_strcpyq(sqlend, ''', foreign->id);
- *sqlend++ = '''; *sqlend++ = ',';
- sqlend += sprintf(sqlend, "%010lu", (ulong) i);
- *sqlend++ = ','; *sqlend++ = ''';
- sqlend = ut_strcpyq(sqlend, ''',
- foreign->foreign_col_names[i]);
- *sqlend++ = '''; *sqlend++ = ','; *sqlend++ = ''';
- sqlend = ut_strcpyq(sqlend, ''',
- foreign->referenced_col_names[i]);
- *sqlend++ = ''';
- memcpy(sqlend, str2, (sizeof str2) - 1);
- sqlend += (sizeof str2) - 1;
- }
- memcpy(sqlend, str4, sizeof str4);
- sqlend += sizeof str4;
- ut_a(sqlend == sql + len + 1);
- graph = pars_sql(sql);
- ut_a(graph);
- mem_free(sql);
- graph->trx = trx;
- trx->graph = NULL;
- graph->fork_type = QUE_FORK_MYSQL_INTERFACE;
- ut_a(thr = que_fork_start_command(graph));
- que_run_threads(thr);
- error = trx->error_state;
- que_graph_free(graph);
- if (error == DB_DUPLICATE_KEY) {
- mutex_enter(&dict_foreign_err_mutex);
- rewind(ef);
- ut_print_timestamp(ef);
- fputs(" Error in foreign key constraint creation for table ",
- ef);
- ut_print_name(ef, trx, table->name);
- fputs(".nA foreign key constraint of name ", ef);
- ut_print_name(ef, trx, foreign->id);
- fputs("nalready exists."
- " (Note that internally InnoDB adds 'databasename/'n"
- "in front of the user-defined constraint name).n",
- ef);
- fputs("Note that InnoDB's FOREIGN KEY system tables storen"
- "constraint names as case-insensitive, with then"
- "MySQL standard latin1_swedish_ci collation. If youn"
- "create tables or databases whose names differ only inn"
- "the character case, then collisions in constraintn"
- "names can occur. Workaround: name your constraintsn"
- "explicitly with unique names.n",
- ef);
- mutex_exit(&dict_foreign_err_mutex);
- return(error);
- }
- if (error != DB_SUCCESS) {
- fprintf(stderr,
- "InnoDB: Foreign key constraint creation failed:n"
- "InnoDB: internal error number %lun", (ulong) error);
- mutex_enter(&dict_foreign_err_mutex);
- ut_print_timestamp(ef);
- fputs(" Internal error in foreign key constraint creation"
- " for table ", ef);
- ut_print_name(ef, trx, table->name);
- fputs(".n"
- "See the MySQL .err log in the datadir for more information.n", ef);
- mutex_exit(&dict_foreign_err_mutex);
- return(error);
- }
-
- foreign = UT_LIST_GET_NEXT(foreign_list, foreign);
- goto loop;
- }