org.apache.drill.exec.compile

Class FsmCursor

java.lang.Object

org.apache.drill.exec.compile.FsmCursor

public class FsmCursor
extends Object

Maintains state while traversing a finite state machine described by an FsmDescriptor. To begin, use createCursor.

Method Summary

Methods

Modifier and Type	Method and Description
void	reset() Resets the state machine, setting it back to the start state.
void	transition(String token) Record a transition in the state machine.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

transition

public void transition(String token)

Record a transition in the state machine.

Validates the transition using FsmDescriptor.validateTransitions(CharSequence).

Parameters:

token - the name of the transition

reset

public void reset()

Resets the state machine, setting it back to the start state.