Class DdlCommandExecutor¶

class DdlCommandExecutor¶

Public Functions

DdlCommandExecutor(const std::string &ddl_statement, std::shared_ptr<Catalog_Namespace::SessionInfo const> session_ptr)¶

ExecutionResult execute()¶

Parses given JSON string and routes resulting payload to appropriate DDL command class for execution.

Parameters

return: ExecutionResult of DDL command execution (if applicable)

bool isShowUserSessions()¶: Returns true if this command is SHOW USER SESSIONS

bool isShowQueries()¶: Returns true if this command is SHOW QUERIES

bool isShowCreateTable()¶: Returns true if this command is SHOW CREATE TABLE

bool isKillQuery()¶: Returns true if this command is KILL QUERY

bool isAlterSystemClear()¶: Returns true if this command is ALTER SYSTEM CLEAR

std::string returnCacheType()¶: Returns which kind of caches if to clear ALTER SYSTEM CLEAR

const std::string getTargetQuerySessionToKill()¶: Returns target query session if this command is KILL QUERY

DistributedExecutionDetails getDistributedExecutionDetails()¶: Returns an object indicating where command execution should take place and how results should be aggregated for distributed setups.

const std::string commandStr()¶: Returns command string, can be useful for logging, conversion

Private Members

std::string ddl_statement_¶

std::string ddl_command_¶

std::unique_ptr<DdlCommandData> ddl_data_¶

std::shared_ptr<Catalog_Namespace::SessionInfo const> session_ptr_¶