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+/*****************************************************************************
+
+Copyright (c) 2005, 2009, Innobase Oy. All Rights Reserved.
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; version 2 of the License.
+
+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 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., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307 USA
+
+*****************************************************************************/
+
+/******************************************************
+Index build routines using a merge sort
+
+Created 13/06/2005 Jan Lindstrom
+*******************************************************/
+
+#ifndef row0merge_h
+#define row0merge_h
+
+#include "univ.i"
+#include "data0data.h"
+#include "dict0types.h"
+#include "trx0types.h"
+#include "que0types.h"
+#include "mtr0mtr.h"
+#include "rem0types.h"
+#include "rem0rec.h"
+#include "read0types.h"
+#include "btr0types.h"
+#include "row0mysql.h"
+#include "lock0types.h"
+
+/* This structure holds index field definitions */
+
+struct merge_index_field_struct {
+	ulint		prefix_len;	/* Prefix len */
+	const char*	field_name;	/* Field name */
+};
+
+typedef struct merge_index_field_struct merge_index_field_t;
+
+/* This structure holds index definitions */
+
+struct merge_index_def_struct {
+	const char*		name;		/* Index name */
+	ulint			ind_type;	/* 0, DICT_UNIQUE,
+						or DICT_CLUSTERED */
+	ulint			n_fields;	/* Number of fields in index */
+	merge_index_field_t*	fields;		/* Field definitions */
+};
+
+typedef struct merge_index_def_struct merge_index_def_t;
+
+/*************************************************************************
+Sets an exclusive lock on a table, for the duration of creating indexes. */
+UNIV_INTERN
+ulint
+row_merge_lock_table(
+/*=================*/
+					/* out: error code or DB_SUCCESS */
+	trx_t*		trx,		/* in/out: transaction */
+	dict_table_t*	table,		/* in: table to lock */
+	enum lock_mode	mode);		/* in: LOCK_X or LOCK_S */
+/*************************************************************************
+Drop an index from the InnoDB system tables.  The data dictionary must
+have been locked exclusively by the caller, because the transaction
+will not be committed. */
+UNIV_INTERN
+void
+row_merge_drop_index(
+/*=================*/
+	dict_index_t*	index,	/* in: index to be removed */
+	dict_table_t*	table,	/* in: table */
+	trx_t*		trx);	/* in: transaction handle */
+/*************************************************************************
+Drop those indexes which were created before an error occurred when
+building an index.  The data dictionary must have been locked
+exclusively by the caller, because the transaction will not be
+committed. */
+UNIV_INTERN
+void
+row_merge_drop_indexes(
+/*===================*/
+	trx_t*		trx,		/* in: transaction */
+	dict_table_t*	table,		/* in: table containing the indexes */
+	dict_index_t**	index,		/* in: indexes to drop */
+	ulint		num_created);	/* in: number of elements in index[] */
+/*************************************************************************
+Drop all partially created indexes during crash recovery. */
+UNIV_INTERN
+void
+row_merge_drop_temp_indexes(void);
+/*=============================*/
+/*************************************************************************
+Rename the tables in the data dictionary.  The data dictionary must
+have been locked exclusively by the caller, because the transaction
+will not be committed. */
+UNIV_INTERN
+ulint
+row_merge_rename_tables(
+/*====================*/
+					/* out: error code or DB_SUCCESS */
+	dict_table_t*	old_table,	/* in/out: old table, renamed to
+					tmp_name */
+	dict_table_t*	new_table,	/* in/out: new table, renamed to
+					old_table->name */
+	const char*	tmp_name,	/* in: new name for old_table */
+	trx_t*		trx);		/* in: transaction handle */
+
+/*************************************************************************
+Create a temporary table for creating a primary key, using the definition
+of an existing table. */
+UNIV_INTERN
+dict_table_t*
+row_merge_create_temporary_table(
+/*=============================*/
+						/* out: table,
+						or NULL on error */
+	const char*		table_name,	/* in: new table name */
+	const merge_index_def_t*index_def,	/* in: the index definition
+						of the primary key */
+	const dict_table_t*	table,		/* in: old table definition */
+	trx_t*			trx);		/* in/out: transaction
+						(sets error_state) */
+/*************************************************************************
+Rename the temporary indexes in the dictionary to permanent ones.  The
+data dictionary must have been locked exclusively by the caller,
+because the transaction will not be committed. */
+UNIV_INTERN
+ulint
+row_merge_rename_indexes(
+/*=====================*/
+					/* out: DB_SUCCESS if all OK */
+	trx_t*		trx,		/* in/out: transaction */
+	dict_table_t*	table);		/* in/out: table with new indexes */
+/*************************************************************************
+Create the index and load in to the dictionary. */
+UNIV_INTERN
+dict_index_t*
+row_merge_create_index(
+/*===================*/
+					/* out: index, or NULL on error */
+	trx_t*		trx,		/* in/out: trx (sets error_state) */
+	dict_table_t*	table,		/* in: the index is on this table */
+	const merge_index_def_t*	/* in: the index definition */
+			index_def);
+#ifdef ROW_MERGE_IS_INDEX_USABLE
+/*************************************************************************
+Check if a transaction can use an index. */
+UNIV_INTERN
+ibool
+row_merge_is_index_usable(
+/*======================*/
+					/* out: TRUE if index can be used by
+					the transaction else FALSE*/
+	const trx_t*		trx,	/* in: transaction */
+	const dict_index_t*	index);	/* in: index to check */
+#endif /* ROW_MERGE_IS_INDEX_USABLE */
+/*************************************************************************
+If there are views that refer to the old table name then we "attach" to
+the new instance of the table else we drop it immediately. */
+UNIV_INTERN
+ulint
+row_merge_drop_table(
+/*=================*/
+					/* out: DB_SUCCESS or error code */
+	trx_t*		trx,		/* in: transaction */
+	dict_table_t*	table);		/* in: table instance to drop */
+
+/*************************************************************************
+Build indexes on a table by reading a clustered index,
+creating a temporary file containing index entries, merge sorting
+these index entries and inserting sorted index entries to indexes. */
+UNIV_INTERN
+ulint
+row_merge_build_indexes(
+/*====================*/
+					/* out: DB_SUCCESS or error code */
+	trx_t*		trx,		/* in: transaction */
+	dict_table_t*	old_table,	/* in: table where rows are
+					read from */
+	dict_table_t*	new_table,	/* in: table where indexes are
+					created; identical to old_table
+					unless creating a PRIMARY KEY */
+	dict_index_t**	indexes,	/* in: indexes to be created */
+	ulint		n_indexes,	/* in: size of indexes[] */
+	TABLE*		table);		/* in/out: MySQL table, for
+					reporting erroneous key value
+					if applicable */
+#endif /* row0merge.h */