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Diffstat (limited to 'storage/federatedx/federatedx_io_null.cc')
| -rw-r--r-- | storage/federatedx/federatedx_io_null.cc | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/storage/federatedx/federatedx_io_null.cc b/storage/federatedx/federatedx_io_null.cc new file mode 100644 index 00000000..b1058dbd --- /dev/null +++ b/storage/federatedx/federatedx_io_null.cc @@ -0,0 +1,301 @@ +/* +Copyright (c) 2007, Antony T Curtis +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + + * Neither the name of FederatedX nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + + +/*#define MYSQL_SERVER 1*/ +#include <my_global.h> +#include "sql_priv.h" + +#include "ha_federatedx.h" + +#include "m_string.h" + +#ifdef USE_PRAGMA_IMPLEMENTATION +#pragma implementation // gcc: Class implementation +#endif + + +#define SAVEPOINT_REALIZED 1 +#define SAVEPOINT_RESTRICT 2 +#define SAVEPOINT_EMITTED 4 + + +typedef struct federatedx_savepoint +{ + ulong level; + uint flags; +} SAVEPT; + + +class federatedx_io_null :public federatedx_io +{ +public: + federatedx_io_null(FEDERATEDX_SERVER *); + ~federatedx_io_null(); + + int query(const char *buffer, size_t length); + virtual FEDERATEDX_IO_RESULT *store_result(); + + virtual size_t max_query_size() const; + + virtual my_ulonglong affected_rows() const; + virtual my_ulonglong last_insert_id() const; + + virtual int error_code(); + virtual const char *error_str(); + + void reset(); + int commit(); + int rollback(); + + int savepoint_set(ulong sp); + ulong savepoint_release(ulong sp); + ulong savepoint_rollback(ulong sp); + void savepoint_restrict(ulong sp); + + ulong last_savepoint() const; + ulong actual_savepoint() const; + bool is_autocommit() const; + + bool table_metadata(ha_statistics *stats, const char *table_name, + uint table_name_length, uint flag); + + /* resultset operations */ + + virtual void free_result(FEDERATEDX_IO_RESULT *io_result); + virtual unsigned int get_num_fields(FEDERATEDX_IO_RESULT *io_result); + virtual my_ulonglong get_num_rows(FEDERATEDX_IO_RESULT *io_result); + virtual FEDERATEDX_IO_ROW *fetch_row(FEDERATEDX_IO_RESULT *io_result, + FEDERATEDX_IO_ROWS **current= NULL); + virtual ulong *fetch_lengths(FEDERATEDX_IO_RESULT *io_result); + virtual const char *get_column_data(FEDERATEDX_IO_ROW *row, + unsigned int column); + virtual bool is_column_null(const FEDERATEDX_IO_ROW *row, + unsigned int column) const; + virtual size_t get_ref_length() const; + virtual void mark_position(FEDERATEDX_IO_RESULT *io_result, + void *ref, FEDERATEDX_IO_ROWS *current); + virtual int seek_position(FEDERATEDX_IO_RESULT **io_result, + const void *ref); +}; + + +federatedx_io *instantiate_io_null(MEM_ROOT *server_root, + FEDERATEDX_SERVER *server) +{ + return new (server_root) federatedx_io_null(server); +} + + +federatedx_io_null::federatedx_io_null(FEDERATEDX_SERVER *aserver) + : federatedx_io(aserver) +{ +} + + +federatedx_io_null::~federatedx_io_null() +{ +} + + +void federatedx_io_null::reset() +{ +} + + +int federatedx_io_null::commit() +{ + return 0; +} + +int federatedx_io_null::rollback() +{ + return 0; +} + + +ulong federatedx_io_null::last_savepoint() const +{ + return 0; +} + + +ulong federatedx_io_null::actual_savepoint() const +{ + return 0; +} + +bool federatedx_io_null::is_autocommit() const +{ + return 0; +} + + +int federatedx_io_null::savepoint_set(ulong sp) +{ + return 0; +} + + +ulong federatedx_io_null::savepoint_release(ulong sp) +{ + return 0; +} + + +ulong federatedx_io_null::savepoint_rollback(ulong sp) +{ + return 0; +} + + +void federatedx_io_null::savepoint_restrict(ulong sp) +{ +} + + +int federatedx_io_null::query(const char *buffer, size_t length) +{ + return 0; +} + + +size_t federatedx_io_null::max_query_size() const +{ + return INT_MAX; +} + + +my_ulonglong federatedx_io_null::affected_rows() const +{ + return 0; +} + + +my_ulonglong federatedx_io_null::last_insert_id() const +{ + return 0; +} + + +int federatedx_io_null::error_code() +{ + return 0; +} + + +const char *federatedx_io_null::error_str() +{ + return ""; +} + + +FEDERATEDX_IO_RESULT *federatedx_io_null::store_result() +{ + FEDERATEDX_IO_RESULT *result; + DBUG_ENTER("federatedx_io_null::store_result"); + + result= NULL; + + DBUG_RETURN(result); +} + + +void federatedx_io_null::free_result(FEDERATEDX_IO_RESULT *) +{ +} + + +unsigned int federatedx_io_null::get_num_fields(FEDERATEDX_IO_RESULT *) +{ + return 0; +} + + +my_ulonglong federatedx_io_null::get_num_rows(FEDERATEDX_IO_RESULT *) +{ + return 0; +} + + +FEDERATEDX_IO_ROW *federatedx_io_null::fetch_row(FEDERATEDX_IO_RESULT *, + FEDERATEDX_IO_ROWS **current) +{ + return NULL; +} + + +ulong *federatedx_io_null::fetch_lengths(FEDERATEDX_IO_RESULT *) +{ + return NULL; +} + + +const char *federatedx_io_null::get_column_data(FEDERATEDX_IO_ROW *, + unsigned int) +{ + return ""; +} + + +bool federatedx_io_null::is_column_null(const FEDERATEDX_IO_ROW *, + unsigned int) const +{ + return true; +} + +bool federatedx_io_null::table_metadata(ha_statistics *stats, + const char *table_name, + uint table_name_length, uint flag) +{ + stats->records= (ha_rows) 0; + stats->mean_rec_length= (ulong) 0; + stats->data_file_length= 0; + + stats->update_time= (time_t) 0; + stats->check_time= (time_t) 0; + + return 0; +} + +size_t federatedx_io_null::get_ref_length() const +{ + return sizeof(int); +} + + +void federatedx_io_null::mark_position(FEDERATEDX_IO_RESULT *io_result, + void *ref, FEDERATEDX_IO_ROWS *current) +{ +} + +int federatedx_io_null::seek_position(FEDERATEDX_IO_RESULT **io_result, + const void *ref) +{ + return 0; +} |