Package org.zalando.nakadiproducer.snapshots

Klasse SimpleSnapshotEventGenerator

java.lang.Object
org.zalando.nakadiproducer.snapshots.SimpleSnapshotEventGenerator
Alle implementierten Schnittstellen:
SnapshotEventGenerator
@Deprecated public final class SimpleSnapshotEventGenerator extends Object implements SnapshotEventGenerator
Veraltet.
Please use the SnapshotEventGenerator.of(java.lang.String, java.util.function.Function<java.lang.Object, java.util.List<org.zalando.nakadiproducer.snapshots.Snapshot>>) methods instead.
This is a simple implementation of the SnapshotEventGenerator. It is meant to be used in a functional style.
Siehe auch:

  • Konstruktordetails

    • SimpleSnapshotEventGenerator

      public SimpleSnapshotEventGenerator(String supportedEventType, Function<Object,List<Snapshot>> snapshotEventFactory)
      Veraltet.
      Creates a SnapshotEventGenerator for an event type, which doesn't support filtering.
      Parameter:
      supportedEventType - the eventType that this SnapShotEventProvider will support.
      snapshotEventFactory - a snapshot event factory function conforming to the specification of SnapshotEventGenerator.generateSnapshots(Object, String) (but without the filter parameter). Any filter provided by the caller will be thrown away.

    • SimpleSnapshotEventGenerator

      public SimpleSnapshotEventGenerator(String supportedEventType, BiFunction<Object,String,List<Snapshot>> snapshotEventFactory)
      Veraltet.
      Creates a SnapshotEventGenerator for an event type, with filtering support.
      Parameter:
      supportedEventType - the eventType that this SnapShotEventProvider will support.
      snapshotEventFactory - a snapshot event factory function conforming to the specification of SnapshotEventGenerator.generateSnapshots(Object, String).

  • Methodendetails

    • generateSnapshots

      public List<Snapshot> generateSnapshots(@Nullable Object withIdGreaterThan, String filter)
      Veraltet.
      Beschreibung aus Schnittstelle kopiert: SnapshotEventGenerator

      Returns a batch of snapshots of given type (event type is an event channel topic name). The implementation may return an arbitrary amount of results, but it must return at least one element if there are entities matching the parameters.

      Calling this method must have no side effects.

      The library will call your implementation like this:
      • Request: generateSnapshots(null, filter), Response: 1,2,3
      • Request: generateSnapshots(3, filter), Response: 4,5
      • Request: generateSnapshots(5, filter), Response: emptyList

      It is your responsibility to make sure that the returned events are ordered by their ID ascending and that, given you return a list of events for entities with IDs {id1, ..., idN}, there exists no entity with an ID between id1 and idN, that is not part of the result.

      Angegeben von:
      generateSnapshots in Schnittstelle SnapshotEventGenerator
      Parameter:
      withIdGreaterThan - if not null, only events for entities with an ID greater than the given one must be returned
      filter - a filter for the snapshot generation mechanism. This value is simply passed through from the request body of the REST endpoint (or from any other triggering mechanism). If there was no request body, this will be null. Implementors can interpret it in whatever way they want (even ignore it). All calls for one snapshot generation will receive the same string.
      Gibt zurück:
      list of elements (wrapped in Snapshot objects) ordered by their ID.

    • getSupportedEventType

      public String getSupportedEventType()
      Veraltet.
      Beschreibung aus Schnittstelle kopiert: SnapshotEventGenerator
      The name of the event type supported by this snapshot generator.
      Angegeben von:
      getSupportedEventType in Schnittstelle SnapshotEventGenerator