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/* Copyright (C) 2003 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef PLUGIN_ARCHIVE_HA_ARCHIVE_H
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#define PLUGIN_ARCHIVE_HA_ARCHIVE_H
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Please read ha_archive.cc first. If you are looking for more general
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answers on how storage engines work, look at ha_example.cc and
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ArchiveShare(const char *name);
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bool prime(uint64_t *auto_increment);
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std::string table_name;
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std::string data_file_name;
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pthread_mutex_t _mutex;
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drizzled::THR_LOCK _lock;
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azio_stream archive_write; /* Archive file we are working with */
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bool archive_write_open;
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bool dirty; /* Flag for if a flush should occur */
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bool crashed; /* Meta file is crashed */
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uint64_t mean_rec_length;
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char real_path[FN_REFLEN];
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drizzled::ha_rows rows_recorded; /* Number of rows in tables */
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drizzled::ha_rows version_rows;
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pthread_mutex_t &mutex()
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Version for file format.
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1 - Initial Version (Never Released)
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2 - Stream Compression, seperate blobs, no packing
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3 - One steam (row and blobs), with packing
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#define ARCHIVE_VERSION 3
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class ha_archive: public drizzled::Cursor
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drizzled::THR_LOCK_DATA lock; /* MySQL lock */
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ArchiveShare *share; /* Shared lock info */
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azio_stream archive; /* Archive file we are working with */
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drizzled::internal::my_off_t current_position; /* The position of the row we just read */
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unsigned char byte_buffer[IO_SIZE]; /* Initial buffer for our string */
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drizzled::String buffer; /* Buffer used for blob storage */
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drizzled::ha_rows scan_rows; /* Number of rows left in scan */
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bool delayed_insert; /* If the insert is delayed */
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bool bulk_insert; /* If we are performing a bulk insert */
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const unsigned char *current_key;
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uint32_t current_key_len;
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uint32_t current_k_offset;
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std::vector <unsigned char> record_buffer;
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bool archive_reader_open;
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ha_archive(drizzled::plugin::StorageEngine &engine_arg,
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drizzled::Table &table_arg);
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const char *index_type(uint32_t)
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void get_auto_increment(uint64_t, uint64_t, uint64_t,
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uint64_t *first_value, uint64_t *nb_reserved_values);
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drizzled::ha_rows records() { return share->rows_recorded; }
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int doStartIndexScan(uint32_t keynr, bool sorted);
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virtual int index_read(unsigned char * buf, const unsigned char * key,
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drizzled::ha_rkey_function find_flag);
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int index_next(unsigned char * buf);
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int doOpen(const drizzled::identifier::Table &identifier, int mode, uint32_t test_if_locked);
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int open(const char *name, int mode, uint32_t test_if_locked);
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int doInsertRecord(unsigned char * buf);
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int real_write_row(unsigned char *buf, azio_stream *writer);
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int delete_all_rows();
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int doStartTableScan(bool scan=1);
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int rnd_next(unsigned char *buf);
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int rnd_pos(unsigned char * buf, unsigned char *pos);
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ArchiveShare *get_share(const char *table_name, int *rc);
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int init_archive_writer();
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int init_archive_reader();
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void position(const unsigned char *record);
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int get_row(azio_stream *file_to_read, unsigned char *buf);
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int get_row_version2(azio_stream *file_to_read, unsigned char *buf);
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int get_row_version3(azio_stream *file_to_read, unsigned char *buf);
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int read_data_header(azio_stream *file_to_read);
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void start_bulk_insert(drizzled::ha_rows rows);
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int end_bulk_insert();
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drizzled::THR_LOCK_DATA **store_lock(drizzled::Session *session,
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drizzled::THR_LOCK_DATA **to,
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drizzled::thr_lock_type lock_type);
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int check(drizzled::Session* session);
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bool check_and_repair(drizzled::Session *session);
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uint32_t max_row_length(const unsigned char *buf);
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bool fix_rec_buff(unsigned int length);
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int unpack_row(azio_stream *file_to_read, unsigned char *record);
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unsigned int pack_row(unsigned char *record);
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#endif /* PLUGIN_ARCHIVE_HA_ARCHIVE_H */