server

type Conn struct {
	*packet.Conn
	// contains filtered or unexported fields
}

type EmptyHandler struct {
}

type Handler interface {
	//handle COM_INIT_DB command, you can check whether the dbName is valid, or other.
	UseDB(dbName string) error
	//handle COM_QUERY comamnd, like SELECT, INSERT, UPDATE, etc...
	//If Result has a Resultset (SELECT, SHOW, etc...), we will send this as the repsonse, otherwise, we will send Result
	HandleQuery(query string) (*Result, error)
	//handle COM_FILED_LIST command
	HandleFieldList(table string, fieldWildcard string) ([]*Field, error)
	//handle COM_STMT_PREPARE, params is the param number for this statement, columns is the column number
	//context will be used later for statement execute
	HandleStmtPrepare(query string) (params int, columns int, context interface{}, err error)
	//handle COM_STMT_EXECUTE, context is the previous one set in prepare
	//query is the statement prepare query, and args is the params for this statement
	HandleStmtExecute(context interface{}, query string, args []interface{}) (*Result, error)
	//handle COM_STMT_CLOSE, context is the previous one set in prepare
	//this handler has no response
	HandleStmtClose(context interface{}) error
	//handle any other command that is not currently handled by the library,
	//default implementation for this method will return an ER_UNKNOWN_ERROR
	HandleOtherCommand(cmd byte, data []byte) error
}

type Stmt struct {
	ID    uint32
	Query string

	Params  int
	Columns int

	Args []interface{}

	Context interface{}
}