/*****************************************************************************

Copyright (c) 1996, 2023, Oracle and/or its affiliates.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.

This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation.  The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.

This program 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 General Public License, version 2.0, for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA

*****************************************************************************/

/**************************************************//**
@file include/row0ins.h
Insert into a table

Created 4/20/1996 Heikki Tuuri
*******************************************************/

#ifndef row0ins_h
#define row0ins_h

#include "univ.i"
#include "data0data.h"
#include "que0types.h"
#include "dict0types.h"
#include "trx0types.h"
#include "row0types.h"

/***************************************************************//**
Checks if foreign key constraint fails for an index entry. Sets shared locks
which lock either the success or the failure of the constraint. NOTE that
the caller must have a shared latch on dict_foreign_key_check_lock.
@return DB_SUCCESS, DB_LOCK_WAIT, DB_NO_REFERENCED_ROW, or
DB_ROW_IS_REFERENCED */
dberr_t
row_ins_check_foreign_constraint(
/*=============================*/
	ibool		check_ref,/*!< in: TRUE If we want to check that
				the referenced table is ok, FALSE if we
				want to check the foreign key table */
	dict_foreign_t*	foreign,/*!< in: foreign constraint; NOTE that the
				tables mentioned in it must be in the
				dictionary cache if they exist at all */
	dict_table_t*	table,	/*!< in: if check_ref is TRUE, then the foreign
				table, else the referenced table */
	dtuple_t*	entry,	/*!< in: index entry for index */
	que_thr_t*	thr)	/*!< in: query thread */
	MY_ATTRIBUTE((nonnull, warn_unused_result));
/*********************************************************************//**
Creates an insert node struct.
@return own: insert node struct */
ins_node_t*
ins_node_create(
/*============*/
	ulint		ins_type,	/*!< in: INS_VALUES, ... */
	dict_table_t*	table,		/*!< in: table where to insert */
	mem_heap_t*	heap);		/*!< in: mem heap where created */
/*********************************************************************//**
Sets a new row to insert for an INS_DIRECT node. This function is only used
if we have constructed the row separately, which is a rare case; this
function is quite slow. */
void
ins_node_set_new_row(
/*=================*/
	ins_node_t*	node,	/*!< in: insert node */
	dtuple_t*	row);	/*!< in: new row (or first row) for the node */
/***************************************************************//**
Tries to insert an entry into a clustered index, ignoring foreign key
constraints. If a record with the same unique key is found, the other
record is necessarily marked deleted by a committed transaction, or a
unique key violation error occurs. The delete marked record is then
updated to an existing record, and we must write an undo log record on
the delete marked record.
@retval DB_SUCCESS on success
@retval DB_LOCK_WAIT on lock wait when !(flags & BTR_NO_LOCKING_FLAG)
@retval DB_FAIL if retry with BTR_MODIFY_TREE is needed
@return error code */
dberr_t
row_ins_clust_index_entry_low(
/*==========================*/
	ulint		flags,	/*!< in: undo logging and locking flags */
	ulint		mode,	/*!< in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE,
				depending on whether we wish optimistic or
				pessimistic descent down the index tree */
	dict_index_t*	index,	/*!< in: clustered index */
	ulint		n_uniq,	/*!< in: 0 or index->n_uniq */
	dtuple_t*	entry,	/*!< in/out: index entry to insert */
	ulint		n_ext,	/*!< in: number of externally stored columns */
	que_thr_t*	thr,	/*!< in: query thread or NULL */
	bool		dup_chk_only)
				/*!< in: if true, just do duplicate check
				and return. don't execute actual insert. */
	MY_ATTRIBUTE((warn_unused_result));

/***************************************************************//**
Tries to insert an entry into a secondary index. If a record with exactly the
same fields is found, the other record is necessarily marked deleted.
It is then unmarked. Otherwise, the entry is just inserted to the index.
@retval DB_SUCCESS on success
@retval DB_LOCK_WAIT on lock wait when !(flags & BTR_NO_LOCKING_FLAG)
@retval DB_FAIL if retry with BTR_MODIFY_TREE is needed
@return error code */
dberr_t
row_ins_sec_index_entry_low(
/*========================*/
	ulint		flags,	/*!< in: undo logging and locking flags */
	ulint		mode,	/*!< in: BTR_MODIFY_LEAF or BTR_MODIFY_TREE,
				depending on whether we wish optimistic or
				pessimistic descent down the index tree */
	dict_index_t*	index,	/*!< in: secondary index */
	mem_heap_t*	offsets_heap,
				/*!< in/out: memory heap that can be emptied */
	mem_heap_t*	heap,	/*!< in/out: memory heap */
	dtuple_t*	entry,	/*!< in/out: index entry to insert */
	trx_id_t	trx_id,	/*!< in: PAGE_MAX_TRX_ID during
				row_log_table_apply(), or 0 */
	que_thr_t*	thr,	/*!< in: query thread */
	bool		dup_chk_only)
				/*!< in: if true, just do duplicate check
				and return. don't execute actual insert. */
	MY_ATTRIBUTE((warn_unused_result));
/** Sets the values of the dtuple fields in entry from the values of appropriate
columns in row.
@param[in]	index	index handler
@param[out]	entry	index entry to make
@param[in]	row	row */
dberr_t
row_ins_index_entry_set_vals(
	const dict_index_t*	index,
	dtuple_t*		entry,
	const dtuple_t*		row);

/***************************************************************//**
Tries to insert the externally stored fields (off-page columns)
of a clustered index entry.
@return DB_SUCCESS or DB_OUT_OF_FILE_SPACE */
dberr_t
row_ins_index_entry_big_rec_func(
/*=============================*/
	const dtuple_t*		entry,	/*!< in/out: index entry to insert */
	const big_rec_t*	big_rec,/*!< in: externally stored fields */
	ulint*			offsets,/*!< in/out: rec offsets */
	mem_heap_t**		heap,	/*!< in/out: memory heap */
	dict_index_t*		index,	/*!< in: index */
	const char*		file,	/*!< in: file name of caller */
#ifndef NDEBUG
	const void*		thd,	/*!< in: connection, or NULL */
#endif /* NDEBUG */
	ulint			line)	/*!< in: line number of caller */
	MY_ATTRIBUTE((nonnull(1,2,3,4,5,6), warn_unused_result));
#ifdef NDEBUG
# define row_ins_index_entry_big_rec(e,big,ofs,heap,index,thd,file,line) \
	row_ins_index_entry_big_rec_func(e,big,ofs,heap,index,file,line)
#else /* NDEBUG */
# define row_ins_index_entry_big_rec(e,big,ofs,heap,index,thd,file,line) \
	row_ins_index_entry_big_rec_func(e,big,ofs,heap,index,file,thd,line)
#endif /* NDEBUG */
/***************************************************************//**
Inserts an entry into a clustered index. Tries first optimistic,
then pessimistic descent down the tree. If the entry matches enough
to a delete marked record, performs the insert by updating or delete
unmarking the delete marked record.
@return DB_SUCCESS, DB_LOCK_WAIT, DB_DUPLICATE_KEY, or some other error code */
dberr_t
row_ins_clust_index_entry(
/*======================*/
	dict_index_t*	index,	/*!< in: clustered index */
	dtuple_t*	entry,	/*!< in/out: index entry to insert */
	que_thr_t*	thr,	/*!< in: query thread */
	ulint		n_ext,	/*!< in: number of externally stored columns */
	bool		dup_chk_only)
				/*!< in: if true, just do duplicate check
				and return. don't execute actual insert. */
	MY_ATTRIBUTE((warn_unused_result));
/***************************************************************//**
Inserts an entry into a secondary index. Tries first optimistic,
then pessimistic descent down the tree. If the entry matches enough
to a delete marked record, performs the insert by updating or delete
unmarking the delete marked record.
@return DB_SUCCESS, DB_LOCK_WAIT, DB_DUPLICATE_KEY, or some other error code */
dberr_t
row_ins_sec_index_entry(
/*====================*/
	dict_index_t*	index,	/*!< in: secondary index */
	dtuple_t*	entry,	/*!< in/out: index entry to insert */
	que_thr_t*	thr,	/*!< in: query thread */
	bool		dup_chk_only)
				/*!< in: if true, just do duplicate check
				and return. don't execute actual insert. */
	MY_ATTRIBUTE((warn_unused_result));
/***********************************************************//**
Inserts a row to a table. This is a high-level function used in
SQL execution graphs.
@return query thread to run next or NULL */
que_thr_t*
row_ins_step(
/*=========*/
	que_thr_t*	thr);	/*!< in: query thread */

/* Insert node structure */

struct ins_node_t{
	que_common_t	common;	/*!< node type: QUE_NODE_INSERT */
	ulint		ins_type;/* INS_VALUES, INS_SEARCHED, or INS_DIRECT */
	dtuple_t*	row;	/*!< row to insert */
	dict_table_t*	table;	/*!< table where to insert */
	sel_node_t*	select;	/*!< select in searched insert */
	que_node_t*	values_list;/* list of expressions to evaluate and
				insert in an INS_VALUES insert */
	ulint		state;	/*!< node execution state */
	dict_index_t*	index;	/*!< NULL, or the next index where the index
				entry should be inserted */
	dtuple_t*	entry;	/*!< NULL, or entry to insert in the index;
				after a successful insert of the entry,
				this should be reset to NULL */
	UT_LIST_BASE_NODE_T(dtuple_t)
			entry_list;/* list of entries, one for each index */
	byte*		row_id_buf;/* buffer for the row id sys field in row */
	trx_id_t	trx_id;	/*!< trx id or the last trx which executed the
				node */
	byte*		trx_id_buf;/* buffer for the trx id sys field in row */
	mem_heap_t*	entry_sys_heap;
				/* memory heap used as auxiliary storage;
				entry_list and sys fields are stored here;
				if this is NULL, entry list should be created
				and buffers for sys fields in row allocated */
	ulint		magic_n;
};

#define	INS_NODE_MAGIC_N	15849075

/* Insert node types */
#define INS_SEARCHED	0	/* INSERT INTO ... SELECT ... */
#define INS_VALUES	1	/* INSERT INTO ... VALUES ... */
#define INS_DIRECT	2	/* this is for internal use in dict0crea:
				insert the row directly */

/* Node execution states */
#define	INS_NODE_SET_IX_LOCK	1	/* we should set an IX lock on table */
#define INS_NODE_ALLOC_ROW_ID	2	/* row id should be allocated */
#define	INS_NODE_INSERT_ENTRIES 3	/* index entries should be built and
					inserted */

#ifndef UNIV_NONINL
#include "row0ins.ic"
#endif

#endif
