Package com.espertech.esper.common.internal.epl.output.view

Class OutputProcessViewConditionLastAllUnord

java.lang.Object
com.espertech.esper.common.internal.epl.output.core.OutputProcessView
com.espertech.esper.common.internal.epl.output.view.OutputProcessViewBaseWAfter
com.espertech.esper.common.internal.epl.output.view.OutputProcessViewConditionLastAllUnord
All Implemented Interfaces:
AgentInstanceMgmtCallback, JoinSetIndicator, JoinSetProcessor, OutputProcessViewTerminable, OutputProcessViewWithAfter, View, Viewable, Iterable<EventBean>
Direct Known Subclasses:
OutputProcessViewConditionLastAllUnordPostProcessAll
public class OutputProcessViewConditionLastAllUnord extends OutputProcessViewBaseWAfter
Handles output rate limiting for LAST and without order-by.

  • Constructor Details

  • Method Details

    • getNumChangesetRows

      public int getNumChangesetRows()
      Specified by:
      getNumChangesetRows in class OutputProcessView

    • getOptionalOutputCondition

      public OutputCondition getOptionalOutputCondition()
      Specified by:
      getOptionalOutputCondition in class OutputProcessView

    • getOptionalAfterConditionState

      public OutputProcessViewAfterState getOptionalAfterConditionState()
      Specified by:
      getOptionalAfterConditionState in interface OutputProcessViewWithAfter
      Overrides:
      getOptionalAfterConditionState in class OutputProcessViewBaseWAfter

    • update

      public void update(EventBean[] newData, EventBean[] oldData)
      Description copied from interface: View
      Notify that data has been added or removed from the Viewable parent. The last object in the newData array of objects would be the newest object added to the parent view. The first object of the oldData array of objects would be the oldest object removed from the parent view.

      If the call to update contains new (inserted) data, then the first argument will be a non-empty list and the second will be empty. Similarly, if the call is a notification of deleted data, then the first argument will be empty and the second will be non-empty. Either the newData or oldData will be non-null. This method won't be called with both arguments being null, but either one could be null. The same is true for zero-length arrays. Either newData or oldData will be non-empty. If both are non-empty, then the update is a modification notification.

      When update() is called on a view by the parent object, the data in newData will be in the collection of the parent, and its data structures will be arranged to reflect that. The data in oldData will not be in the parent's data structures, and any access to the parent will indicate that that data is no longer there.

      Parameters:
      newData - is the new data that has been added to the parent view
      oldData - is the old data that has been removed from the parent view

    • process

      public void process(Set<MultiKeyArrayOfKeys<EventBean>> newEvents, Set<MultiKeyArrayOfKeys<EventBean>> oldEvents, ExprEvaluatorContext exprEvaluatorContext)
      This process (update) method is for participation in a join.
      Parameters:
      newEvents - - new events
      oldEvents - - old events
      exprEvaluatorContext - expression evaluation context

    • continueOutputProcessingView

      protected void continueOutputProcessingView(boolean doOutput, boolean forceUpdate)
      Called once the output condition has been met. Invokes the result set processor. Used for non-join event data.
      Parameters:
      doOutput - - true if the batched events should actually be output as well as processed, false if they should just be processed
      forceUpdate - - true if output should be made even when no updating events have arrived

    • output

      protected void output(boolean forceUpdate, UniformPair<EventBean[]> results)

    • continueOutputProcessingJoin

      protected void continueOutputProcessingJoin(boolean doOutput, boolean forceUpdate)
      Called once the output condition has been met. Invokes the result set processor. Used for join event data.
      Parameters:
      doOutput - - true if the batched events should actually be output as well as processed, false if they should just be processed
      forceUpdate - - true if output should be made even when no updating events have arrived

    • iterator

      public Iterator<EventBean> iterator()
      Description copied from interface: Viewable
      Allows iteration through all elements in this viewable. The iterator will return the elements in the collection in their natural order, or, if there is no natural ordering, in some unpredictable order.
      Returns:
      an iterator which will go through all current elements in the collection.

    • terminated

      public void terminated()

    • stop

      public void stop(AgentInstanceStopServices services)
      Specified by:
      stop in interface AgentInstanceMgmtCallback
      Overrides:
      stop in class OutputProcessViewBaseWAfter