context

type Context interface {
	// GetTxn gets a transaction for further execution.
	GetTxn(forceNew bool) (kv.Transaction, error)

	// GetClient gets a kv.Client.
	GetClient() kv.Client

	// RollbackTxn rolls back the current transaction.
	RollbackTxn() error

	// CommitTxn commits the current transaction.
	CommitTxn() error

	// SetValue saves a value associated with this context for key.
	SetValue(key fmt.Stringer, value interface{})

	// Value returns the value associated with this context for key.
	Value(key fmt.Stringer) interface{}

	// ClearValue clears the value associated with this context for key.
	ClearValue(key fmt.Stringer)

	GetSessionVars() *variable.SessionVars
}