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authorunknown <brian@zim.(none)>2005-09-28 19:04:51 -0700
committerunknown <brian@zim.(none)>2005-09-28 19:04:51 -0700
commit5c24a8feef931f4769a1b9e5625004ba7a54b22c (patch)
treebb92cbf8665195bd13d26505fef281da28afbab7 /sql/ha_archive.h
parent0fda286a415777e755d4bc076d4d35f27c071219 (diff)
downloadmariadb-git-5c24a8feef931f4769a1b9e5625004ba7a54b22c.tar.gz
Moving archive from example to sql.
sql/ha_archive.h: Rename: sql/examples/ha_archive.h -> sql/ha_archive.h libmysqld/Makefile.am: Moved archive files references sql/Makefile.am: Moved archive from example to sql sql/ha_archive.cc: Moved location of prov file. sql/handler.cc: Moved location from examples to sql
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+/* Copyright (C) 2003 MySQL AB
+
+ 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; either version 2 of the License, or
+ (at your option) any later version.
+
+ 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 */
+
+#ifdef USE_PRAGMA_INTERFACE
+#pragma interface /* gcc class implementation */
+#endif
+
+#include <zlib.h>
+
+/*
+ Please read ha_archive.cc first. If you are looking for more general
+ answers on how storage engines work, look at ha_example.cc and
+ ha_example.h.
+*/
+
+typedef struct st_archive_share {
+ char *table_name;
+ char data_file_name[FN_REFLEN];
+ uint table_name_length,use_count;
+ pthread_mutex_t mutex;
+ THR_LOCK lock;
+ File meta_file; /* Meta file we use */
+ gzFile archive_write; /* Archive file we are working with */
+ bool dirty; /* Flag for if a flush should occur */
+ bool crashed; /* Meta file is crashed */
+ ha_rows rows_recorded; /* Number of rows in tables */
+} ARCHIVE_SHARE;
+
+/*
+ Version for file format.
+ 1 - Initial Version
+*/
+#define ARCHIVE_VERSION 1
+
+class ha_archive: public handler
+{
+ THR_LOCK_DATA lock; /* MySQL lock */
+ ARCHIVE_SHARE *share; /* Shared lock info */
+ gzFile archive; /* Archive file we are working with */
+ z_off_t current_position; /* The position of the row we just read */
+ byte byte_buffer[IO_SIZE]; /* Initial buffer for our string */
+ String buffer; /* Buffer used for blob storage */
+ ha_rows scan_rows; /* Number of rows left in scan */
+ bool delayed_insert; /* If the insert is delayed */
+ bool bulk_insert; /* If we are performing a bulk insert */
+
+public:
+ ha_archive(TABLE *table_arg);
+ ~ha_archive()
+ {
+ }
+ const char *table_type() const { return "ARCHIVE"; }
+ const char *index_type(uint inx) { return "NONE"; }
+ const char **bas_ext() const;
+ ulong table_flags() const
+ {
+ return (HA_REC_NOT_IN_SEQ | HA_NOT_EXACT_COUNT | HA_NO_AUTO_INCREMENT |
+ HA_FILE_BASED | HA_CAN_INSERT_DELAYED);
+ }
+ ulong index_flags(uint idx, uint part, bool all_parts) const
+ {
+ return 0;
+ }
+ int open(const char *name, int mode, uint test_if_locked);
+ int close(void);
+ int write_row(byte * buf);
+ int real_write_row(byte *buf, gzFile writer);
+ int delete_all_rows();
+ int rnd_init(bool scan=1);
+ int rnd_next(byte *buf);
+ int rnd_pos(byte * buf, byte *pos);
+ int get_row(gzFile file_to_read, byte *buf);
+ int read_meta_file(File meta_file, ha_rows *rows);
+ int write_meta_file(File meta_file, ha_rows rows, bool dirty);
+ ARCHIVE_SHARE *get_share(const char *table_name, TABLE *table);
+ int free_share(ARCHIVE_SHARE *share);
+ bool auto_repair() const { return 1; } // For the moment we just do this
+ int read_data_header(gzFile file_to_read);
+ int write_data_header(gzFile file_to_write);
+ void position(const byte *record);
+ void info(uint);
+ int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info);
+ int optimize(THD* thd, HA_CHECK_OPT* check_opt);
+ int repair(THD* thd, HA_CHECK_OPT* check_opt);
+ void start_bulk_insert(ha_rows rows);
+ int end_bulk_insert();
+ enum row_type get_row_type() const
+ {
+ return ROW_TYPE_COMPRESSED;
+ }
+ THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
+ enum thr_lock_type lock_type);
+};
+
+handlerton *archive_db_init(void);
+bool archive_db_end(void);
+