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query_classifier.cc: added detection for CREATE TEMPORARY TABLE and setting a new query type QUERY_TYPE_CREATE_TMP_TABLE for it.

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query_classifier.h: added QUERY_TYPE_CREATE_TMP_TABLE and QUERY_TYPE_READ_TMP_TABLE for use of temporary table support.
hashtable.c:Added variant of hashtable which is 'flat', that is, stored to existing memory instead of allocating memory as a part of the call. Existing function declarations don't change but added hashtable_alloc_flat for the purpose. Both hashtable_alloc and hashtable_alloc_flat now call the real allocation function, hashtable_alloc_real. hashtable_free only frees memory which is allocated in hashtable_alloc_real.
hashtable.h: added a flag to HASHTABLE struct to indicate whether hashtable owns its memory or not.
readwritesplit.h: Added RSES_PROP_TYPE_TMPTABLES property type to be used for keeping the hashtable for tablenames.
readwritesplit.c: Added comments about temporary table support implementation.
This commit is contained in:
VilhoRaatikka
2014-08-29 10:08:48 +03:00
parent 493feb49ba
commit 531d8d7b47
6 changed files with 175 additions and 8 deletions
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6
query_classifier/query_classifier.h
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@ -43,7 +43,9 @@ typedef enum {
QUERY_TYPE_COMMIT = 0x0200, /*< COMMIT */
QUERY_TYPE_PREPARE_NAMED_STMT = 0x0400, /*< Prepared stmt with name from user */
QUERY_TYPE_PREPARE_STMT = 0x0800, /*< Prepared stmt with id provided by server */
QUERY_TYPE_EXEC_STMT = 0x1000 /*< Execute prepared statement */
QUERY_TYPE_EXEC_STMT = 0x1000, /*< Execute prepared statement */
QUERY_TYPE_CREATE_TMP_TABLE = 0x2000, /*< Create temporary table */
QUERY_TYPE_READ_TMP_TABLE = 0x4000 /*< Read temporary table */
} skygw_query_type_t;
#define QUERY_IS_TYPE(mask,type) ((mask & type) == type)
@ -60,6 +62,8 @@ skygw_query_type_t skygw_query_classifier_get_type(
/** Free THD context and close MYSQL */
void skygw_query_classifier_free(MYSQL* mysql);
char* skygw_query_classifier_get_stmtname(MYSQL* mysql);
void* skygw_get_affected_tables(void* thdp);
EXTERN_C_BLOCK_END