Function to handle query. More...
Defines | |
#define | START_QUERY |
#define | TDS_PUT_N_AS_UCS2(tds, s) |
Enumerations | |
enum | { MUL_STARTED = 1 } |
Functions | |
static char * | tds5_fix_dot_query (const char *query, size_t *query_len, TDSPARAMINFO *params) |
TDSRET | tds71_submit_prepexec (TDSSOCKET *tds, const char *query, const char *id, TDSDYNAMIC **dyn_out, TDSPARAMINFO *params) |
tds71_submit_prepexec() creates a temporary stored procedure in the server. | |
static char * | tds7_build_param_def_from_params (TDSSOCKET *tds, const char *query, size_t query_len, TDSPARAMINFO *params, size_t *out_len) |
Return string with parameters definition, useful for TDS7+. | |
static char * | tds7_build_param_def_from_query (TDSSOCKET *tds, const char *converted_query, size_t converted_query_len, TDSPARAMINFO *params, size_t *out_len) |
Return string with parameters definition, useful for TDS7+. | |
static void | tds7_put_cursor_fetch (TDSSOCKET *tds, TDS_INT cursor_id, TDS_TINYINT fetch_type, TDS_INT i_row, TDS_INT num_rows) |
static void | tds7_put_params_definition (TDSSOCKET *tds, const char *param_definition, size_t param_length) |
static void | tds7_put_query_params (TDSSOCKET *tds, const char *query, size_t query_len) |
Output params types and query (required by sp_prepare/sp_executesql/sp_prepexec). | |
static void | tds7_send_execute (TDSSOCKET *tds, TDSDYNAMIC *dyn) |
static size_t | tds_ascii_to_ucs2 (char *buffer, const char *buf) |
Accept an ASCII string, convert it to UCS2-LE The input is null-terminated, but the output excludes the null. | |
const char * | tds_convert_string (TDSSOCKET *tds, const TDSICONV *char_conv, const char *s, int len, size_t *out_len) |
Convert a string in an allocated buffer. | |
int | tds_count_placeholders (const char *query) |
Count the number of placeholders in query. | |
static int | tds_count_placeholders_ucs2le (const char *query, const char *query_end) |
TDSRET | tds_cursor_close (TDSSOCKET *tds, TDSCURSOR *cursor) |
TDSRET | tds_cursor_dealloc (TDSSOCKET *tds, TDSCURSOR *cursor) |
Send a deallocation request to server libTDS care for all deallocation stuff (memory and server cursor) Caller should not use cursor pointer anymore. | |
TDSRET | tds_cursor_declare (TDSSOCKET *tds, TDSCURSOR *cursor, TDSPARAMINFO *params, int *something_to_send) |
TDSRET | tds_cursor_fetch (TDSSOCKET *tds, TDSCURSOR *cursor, TDS_CURSOR_FETCH fetch_type, TDS_INT i_row) |
TDSRET | tds_cursor_get_cursor_info (TDSSOCKET *tds, TDSCURSOR *cursor, TDS_UINT *prow_number, TDS_UINT *prow_count) |
TDSRET | tds_cursor_open (TDSSOCKET *tds, TDSCURSOR *cursor, TDSPARAMINFO *params, int *something_to_send) |
TDSRET | tds_cursor_setname (TDSSOCKET *tds, TDSCURSOR *cursor) |
TDSRET | tds_cursor_setrows (TDSSOCKET *tds, TDSCURSOR *cursor, int *something_to_send) |
TDSRET | tds_cursor_update (TDSSOCKET *tds, TDSCURSOR *cursor, TDS_CURSOR_OPERATION op, TDS_INT i_row, TDSPARAMINFO *params) |
size_t | tds_fix_column_size (TDSSOCKET *tds, TDSCOLUMN *curcol) |
Get column size for wire. | |
static TDSRET | tds_get_column_declaration (TDSSOCKET *tds, TDSCOLUMN *curcol, char *out) |
Return declaration for column (like "varchar(20)"). | |
TDSRET | tds_multiple_done (TDSSOCKET *tds, TDSMULTIPLE *multiple) |
TDSRET | tds_multiple_execute (TDSSOCKET *tds, TDSMULTIPLE *multiple, TDSDYNAMIC *dyn) |
TDSRET | tds_multiple_init (TDSSOCKET *tds, TDSMULTIPLE *multiple, TDS_MULTIPLE_TYPE type) |
TDSRET | tds_multiple_query (TDSSOCKET *tds, TDSMULTIPLE *multiple, const char *query, TDSPARAMINFO *params) |
int | tds_needs_unprepare (TDSSOCKET *tds, TDSDYNAMIC *dyn) |
const char * | tds_next_placeholder (const char *start) |
Get position of next placeholder. | |
static const char * | tds_next_placeholder_ucs2le (const char *start, const char *end, int named) |
static TDSRET | tds_put_data (TDSSOCKET *tds, TDSCOLUMN *curcol) |
Write data to wire. | |
static TDSRET | tds_put_data_info (TDSSOCKET *tds, TDSCOLUMN *curcol, int flags) |
Put data information to wire. | |
static int | tds_put_data_info_length (TDSSOCKET *tds, TDSCOLUMN *curcol, int flags) |
Calc information length in bytes (useful for calculating full packet length). | |
static TDSRET | tds_put_param_as_string (TDSSOCKET *tds, TDSPARAMINFO *params, int n) |
static void | tds_put_params (TDSSOCKET *tds, TDSPARAMINFO *info, int flags) |
static TDSRET | tds_query_flush_packet (TDSSOCKET *tds) |
static int | tds_quote (TDSSOCKET *tds, char *buffer, char quoting, const char *id, int len) |
static void | tds_quote_and_put (TDSSOCKET *tds, const char *s, const char *end) |
int | tds_quote_id (TDSSOCKET *tds, char *buffer, const char *id, int idlen) |
Quote an id. | |
int | tds_quote_string (TDSSOCKET *tds, char *buffer, const char *str, int len) |
Quote a string. | |
TDSRET | tds_send_cancel (TDSSOCKET *tds) |
tds_send_cancel() sends an empty packet (8 byte header only) tds_process_cancel should be called directly after this. | |
static TDSRET | tds_send_emulated_execute (TDSSOCKET *tds, const char *query, TDSPARAMINFO *params) |
Emulate prepared execute traslating to a normal language. | |
static TDSRET | tds_send_emulated_rpc (TDSSOCKET *tds, const char *rpc_name, TDSPARAMINFO *params) |
static void | tds_set_cur_cursor (TDSSOCKET *tds, TDSCURSOR *cursor) |
static const char * | tds_skip_comment (const char *s) |
static const char * | tds_skip_comment_ucs2le (const char *s, const char *end) |
const char * | tds_skip_quoted (const char *s) |
Skip quoting string (like 'sfsf', "dflkdj" or [dfkjd]). | |
static const char * | tds_skip_quoted_ucs2le (const char *s, const char *end) |
static void | tds_start_query (TDSSOCKET *tds) |
TDSRET | tds_submit_begin_tran (TDSSOCKET *tds) |
TDSRET | tds_submit_commit (TDSSOCKET *tds, int cont) |
TDSRET | tds_submit_execdirect (TDSSOCKET *tds, const char *query, TDSPARAMINFO *params) |
Submit a prepared query with parameters. | |
TDSRET | tds_submit_execute (TDSSOCKET *tds, TDSDYNAMIC *dyn) |
tds_submit_execute() sends a previously prepared dynamic statement to the server. | |
TDSRET | tds_submit_optioncmd (TDSSOCKET *tds, TDS_OPTION_CMD command, TDS_OPTION option, TDS_OPTION_ARG *param, TDS_INT param_size) |
TDSRET | tds_submit_prepare (TDSSOCKET *tds, const char *query, const char *id, TDSDYNAMIC **dyn_out, TDSPARAMINFO *params) |
tds_submit_prepare() creates a temporary stored procedure in the server. | |
TDSRET | tds_submit_query (TDSSOCKET *tds, const char *query) |
tds_submit_query() sends a language string to the database server for processing. | |
TDSRET | tds_submit_query_params (TDSSOCKET *tds, const char *query, TDSPARAMINFO *params) |
tds_submit_query_params() sends a language string to the database server for processing. | |
TDSRET | tds_submit_queryf (TDSSOCKET *tds, const char *queryf,...) |
TDSRET | tds_submit_rollback (TDSSOCKET *tds, int cont) |
TDSRET | tds_submit_rpc (TDSSOCKET *tds, const char *rpc_name, TDSPARAMINFO *params) |
tds_submit_rpc() call a RPC from server. | |
TDSRET | tds_submit_unprepare (TDSSOCKET *tds, TDSDYNAMIC *dyn) |
Send a unprepare request for a prepared query. | |
Variables | |
static const TDS_UCHAR | tds72_query_start [] |
Function to handle query.
#define START_QUERY |
do { \ if (IS_TDS72_PLUS(tds)) \ tds_start_query(tds); \ } while(0)
#define TDS_PUT_N_AS_UCS2 | ( | tds, | |||
s | ) |
do { \ char buffer[sizeof(s)*2-2]; \ tds_put_n(tds, buffer, tds_ascii_to_ucs2(buffer, s)); \ } while(0)
TDSRET tds71_submit_prepexec | ( | TDSSOCKET * | tds, | |
const char * | query, | |||
const char * | id, | |||
TDSDYNAMIC ** | dyn_out, | |||
TDSPARAMINFO * | params | |||
) |
tds71_submit_prepexec() creates a temporary stored procedure in the server.
tds | state information for the socket and the TDS protocol | |
query | language query with given placeholders (?) | |
id | string to identify the dynamic query. Pass NULL for automatic generation. | |
dyn_out | will receive allocated TDSDYNAMIC*. Any older allocated dynamic won't be freed, Can be NULL. | |
params | parameters to use. It can be NULL even if parameters are present. Used only for TDS7+ |
static char * tds7_build_param_def_from_params | ( | TDSSOCKET * | tds, | |
const char * | query, | |||
size_t | query_len, | |||
TDSPARAMINFO * | params, | |||
size_t * | out_len | |||
) | [static] |
Return string with parameters definition, useful for TDS7+.
tds | state information for the socket and the TDS protocol | |
params | parameters to build declaration | |
out_len | length output buffer in bytes |
static char * tds7_build_param_def_from_query | ( | TDSSOCKET * | tds, | |
const char * | converted_query, | |||
size_t | converted_query_len, | |||
TDSPARAMINFO * | params, | |||
size_t * | out_len | |||
) | [static] |
Return string with parameters definition, useful for TDS7+.
tds | state information for the socket and the TDS protocol | |
params | parameters to build declaration | |
out_len | length output buffer in bytes |
static void tds7_put_query_params | ( | TDSSOCKET * | tds, | |
const char * | query, | |||
size_t | query_len | |||
) | [static] |
Output params types and query (required by sp_prepare/sp_executesql/sp_prepexec).
tds | state information for the socket and the TDS protocol | |
query | query (in ucs2le codings) | |
query_len | query length in bytes |
static size_t tds_ascii_to_ucs2 | ( | char * | buffer, | |
const char * | buf | |||
) | [static] |
Accept an ASCII string, convert it to UCS2-LE The input is null-terminated, but the output excludes the null.
buffer | buffer where to store output | |
buf | string to write |
const char* tds_convert_string | ( | TDSSOCKET * | tds, | |
const TDSICONV * | char_conv, | |||
const char * | s, | |||
int | len, | |||
size_t * | out_len | |||
) |
Convert a string in an allocated buffer.
tds | state information for the socket and the TDS protocol | |
char_conv | information about the encodings involved | |
s | input string | |
len | input string length (in bytes), -1 for null terminated | |
out_len | returned output length (in bytes) |
static TDSRET tds_get_column_declaration | ( | TDSSOCKET * | tds, | |
TDSCOLUMN * | curcol, | |||
char * | out | |||
) | [static] |
Return declaration for column (like "varchar(20)").
tds | state information for the socket and the TDS protocol | |
curcol | column | |
out | buffer to hold declaration |
const char* tds_next_placeholder | ( | const char * | start | ) |
Get position of next placeholder.
start | pointer to part of query to search |
Write data to wire.
tds | state information for the socket and the TDS protocol | |
curcol | column where store column information |
Put data information to wire.
tds | state information for the socket and the TDS protocol | |
curcol | column where to store information | |
flags | bit flags on how to send data (use TDS_PUT_DATA_USE_NAME for use name information) |
Calc information length in bytes (useful for calculating full packet length).
tds | state information for the socket and the TDS protocol | |
curcol | column where to store information | |
flags | bit flags on how to send data (use TDS_PUT_DATA_USE_NAME for use name information) |
int tds_quote_id | ( | TDSSOCKET * | tds, | |
char * | buffer, | |||
const char * | id, | |||
int | idlen | |||
) |
Quote an id.
tds | state information for the socket and the TDS protocol | |
buffer | buffer to store quoted id. If NULL do not write anything (useful to compute quote length) | |
id | id to quote | |
idlen | id length |
int tds_quote_string | ( | TDSSOCKET * | tds, | |
char * | buffer, | |||
const char * | str, | |||
int | len | |||
) |
Quote a string.
tds | state information for the socket and the TDS protocol | |
buffer | buffer to store quoted id. If NULL do not write anything (useful to compute quote length) | |
str | string to quote (not necessary null-terminated) | |
len | length of string (-1 for null terminated) |
TDSRET tds_send_cancel | ( | TDSSOCKET * | tds | ) |
tds_send_cancel() sends an empty packet (8 byte header only) tds_process_cancel should be called directly after this.
tds | state information for the socket and the TDS protocol |
On sending the cancel, we may get EAGAIN. We then select(2) until we know either 1) it succeeded or 2) it didn't. On failure, close the socket, tell the app, and fail the function.
On success, we read(2) and wait for a reply with select(2). If we get one, great. If the client's timeout expires, we tell him, but all we can do is wait some more or give up and close the connection. If he tells us to cancel again, we wait some more.
const char* tds_skip_quoted | ( | const char * | s | ) |
Skip quoting string (like 'sfsf', "dflkdj" or [dfkjd]).
s | pointer to first quoting character (should be '," or [) |
TDSRET tds_submit_execdirect | ( | TDSSOCKET * | tds, | |
const char * | query, | |||
TDSPARAMINFO * | params | |||
) |
Submit a prepared query with parameters.
tds | state information for the socket and the TDS protocol | |
query | language query with given placeholders (?) | |
params | parameters to send |
TDSRET tds_submit_execute | ( | TDSSOCKET * | tds, | |
TDSDYNAMIC * | dyn | |||
) |
tds_submit_execute() sends a previously prepared dynamic statement to the server.
tds | state information for the socket and the TDS protocol | |
dyn | dynamic proc to execute. Must build from same tds. |
TDSRET tds_submit_prepare | ( | TDSSOCKET * | tds, | |
const char * | query, | |||
const char * | id, | |||
TDSDYNAMIC ** | dyn_out, | |||
TDSPARAMINFO * | params | |||
) |
tds_submit_prepare() creates a temporary stored procedure in the server.
Under TDS 4.2 dynamic statements are emulated building sql command
tds | state information for the socket and the TDS protocol | |
query | language query with given placeholders (?) | |
id | string to identify the dynamic query. Pass NULL for automatic generation. | |
dyn_out | will receive allocated TDSDYNAMIC*. Any older allocated dynamic won't be freed, Can be NULL. | |
params | parameters to use. It can be NULL even if parameters are present. Used only for TDS7+ |
TDSRET tds_submit_query | ( | TDSSOCKET * | tds, | |
const char * | query | |||
) |
tds_submit_query() sends a language string to the database server for processing.
TDS 4.2 is a plain text message with a packet type of 0x01, TDS 7.0 is a unicode string with packet type 0x01, and TDS 5.0 uses a TDS_LANGUAGE_TOKEN to encapsulate the query and a packet type of 0x0f.
tds | state information for the socket and the TDS protocol | |
query | language query to submit |
TDSRET tds_submit_query_params | ( | TDSSOCKET * | tds, | |
const char * | query, | |||
TDSPARAMINFO * | params | |||
) |
tds_submit_query_params() sends a language string to the database server for processing.
TDS 4.2 is a plain text message with a packet type of 0x01, TDS 7.0 is a unicode string with packet type 0x01, and TDS 5.0 uses a TDS_LANGUAGE_TOKEN to encapsulate the query and a packet type of 0x0f.
tds | state information for the socket and the TDS protocol | |
query | language query to submit | |
params | parameters of query |
TDSRET tds_submit_rpc | ( | TDSSOCKET * | tds, | |
const char * | rpc_name, | |||
TDSPARAMINFO * | params | |||
) |
tds_submit_rpc() call a RPC from server.
Output parameters will be stored in tds->param_info
tds | state information for the socket and the TDS protocol | |
rpc_name | name of RPC | |
params | parameters informations. NULL for no parameters |
TDSRET tds_submit_unprepare | ( | TDSSOCKET * | tds, | |
TDSDYNAMIC * | dyn | |||
) |
Send a unprepare request for a prepared query.
tds | state information for the socket and the TDS protocol | |
dyn | dynamic query |
const TDS_UCHAR tds72_query_start[] [static] |
{ 0x16, 0, 0, 0, 0x12, 0, 0, 0, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 }