Field Detail

• statementContext

  private StatementContext statementContext

  Reference to the StatementContext for the executing statement which might time out.

Constructor Detail

• CancelQueryTask

  public CancelQueryTask​(StatementContext ctx)

  Initializes a new task for timing out a statement's execution. This does not schedule it for execution, the caller is responsible for calling Timer.schedule() with this object as parameter.

Method Detail

• run

  public void run()

  Invoked by a Timer class to cancel an executing statement. This method just sets a volatile flag in the associated StatementContext object by calling StatementContext.cancel(); it is the responsibility of the thread executing the statement to check this flag regularly.

  Specified by:

  run in interface java.lang.Runnable

  Specified by:

  run in class java.util.TimerTask

• forgetContext

  public void forgetContext()

  Stops this task and prevents it from cancelling a statement. Guarantees that after this method returns, the associated StatementContext object will not be tampered with by this task. Thus, the StatementContext object may safely be allocated to other executing statements.