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

Class OutputProcessViewSimple

java.lang.Object
com.espertech.esper.common.internal.epl.output.core.OutputProcessView
com.espertech.esper.common.internal.epl.output.core.OutputProcessViewSimple
All Implemented Interfaces:
AgentInstanceMgmtCallback, JoinSetIndicator, JoinSetProcessor, OutputProcessViewTerminable, View, Viewable, Iterable<EventBean>
public class OutputProcessViewSimple extends OutputProcessView

  • Constructor Details

    • OutputProcessViewSimple

      public OutputProcessViewSimple(AgentInstanceContext agentInstanceContext)

  • Method Details

    • getNumChangesetRows

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

    • getOptionalOutputCondition

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

    • stop

      public void stop(AgentInstanceStopServices services)

    • process

      public void process(Set<MultiKeyArrayOfKeys<EventBean>> newEvents, Set<MultiKeyArrayOfKeys<EventBean>> oldEvents, ExprEvaluatorContext exprEvaluatorContext)
      Description copied from interface: JoinSetProcessor
      Process join result set.
      Parameters:
      newEvents - - set of event tuples representing new data
      oldEvents - - set of event tuples representing old data
      exprEvaluatorContext - expression evaluation context

    • 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

    • getEventType

      public EventType getEventType()
      Description copied from interface: Viewable
      Provides metadata information about the type of object the event collection contains.
      Returns:
      metadata for the objects in the collection

    • 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()