Trigger.TriggerContext (Google Cloud Dataflow SDK 1.9.1 API)

Google Cloud Dataflow SDK for Java, version 1.9.1

Warning: Dataflow SDK 1.x for Java is unsupported as of October 16, 2018. See Migrating from Dataflow SDK 1.x for Java for migration guidance.

Note: If you are using Cloud Dataflow SDK version 2.x, see the Apache Beam API reference documentation.

com.google.cloud.dataflow.sdk.transforms.windowing

Class Trigger.TriggerContext

• java.lang.Object
• • com.google.cloud.dataflow.sdk.transforms.windowing.Trigger.TriggerContext

• Direct Known Subclasses:

  Trigger.OnElementContext, Trigger.OnMergeContext

  Enclosing class:

  Trigger<W extends BoundedWindow>

  ---

  
  

  public abstract class Trigger.TriggerContext
  extends Object

  Information accessible to all operational hooks in this Trigger.

  Used directly in Trigger.shouldFire(com.google.cloud.dataflow.sdk.transforms.windowing.Trigger<W>.TriggerContext) and Trigger.clear(com.google.cloud.dataflow.sdk.transforms.windowing.Trigger<W>.TriggerContext), and extended with additional information in other methods.

• • Constructor Summary

    Constructors 

    Constructor and Description
    TriggerContext()

  • Method Summary

    All Methods Instance Methods Abstract Methods 

    Modifier and Type	Method and Description
    abstract Instant	currentEventTime() The current event time for the input or null if unknown.
    abstract Instant	currentProcessingTime() The current processing time.
    abstract Instant	currentSynchronizedProcessingTime() The current synchronized upstream processing time or null if unknown.
    abstract void	deleteTimer(Instant timestamp, com.google.cloud.dataflow.sdk.util.TimeDomain domain) Removes the timer set in this trigger context for the given Instant and TimeDomain.
    abstract Trigger.TriggerContext	forTrigger(com.google.cloud.dataflow.sdk.util.ExecutableTrigger<W> trigger) Create a sub-context for the given sub-trigger.
    abstract com.google.cloud.dataflow.sdk.util.state.StateAccessor<?>	state() Returns the interface for accessing persistent state.
    abstract Trigger.TriggerInfo<W>	trigger() Returns the interface for accessing trigger info.
    abstract W	window() The window that the current context is executing in.

    • Methods inherited from class java.lang.Object

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

• • Constructor Detail

    • TriggerContext

      public TriggerContext()

  • Method Detail

    • trigger

      public abstract Trigger.TriggerInfo<W> trigger()

      Returns the interface for accessing trigger info.

    • state

      public abstract com.google.cloud.dataflow.sdk.util.state.StateAccessor<?> state()

      Returns the interface for accessing persistent state.

    • window

      public abstract W window()

      The window that the current context is executing in.

    • forTrigger

      public abstract Trigger.TriggerContext forTrigger(com.google.cloud.dataflow.sdk.util.ExecutableTrigger<W> trigger)

      Create a sub-context for the given sub-trigger.

    • deleteTimer

      public abstract void deleteTimer(Instant timestamp,
                                       com.google.cloud.dataflow.sdk.util.TimeDomain domain)

      Removes the timer set in this trigger context for the given Instant and TimeDomain.

    • currentProcessingTime

      public abstract Instant currentProcessingTime()

      The current processing time.

    • currentSynchronizedProcessingTime

      @Nullable
      public abstract Instant currentSynchronizedProcessingTime()

      The current synchronized upstream processing time or null if unknown.

    • currentEventTime

      @Nullable
      public abstract Instant currentEventTime()

      The current event time for the input or null if unknown.