Package i5.las2peer.persistency

Interface StorageCollisionHandler

All Known Implementing Classes:
StoreProcessHelper
public interface StorageCollisionHandler
This interface can be used to implement a handler that is called if a collision occurs during a store operation.

  • Method Details

    • onCollision

      Serializable onCollision(EnvelopeVersion toStore, EnvelopeVersion inNetwork, long numberOfCollisions) throws StopMergingException
      This method is called if an envelope is already known for the given identifier and version.
      Parameters:
      toStore - This is the envelope that was requested to be stored in the network.
      inNetwork - This is the colliding envelope that was fetched from the network.
      numberOfCollisions - This is an increasing counter on how often this method was called. It should be a hint to the developer to reconsider his storage structure if this value reaches often high values.
      Returns:
      Returns the merged content from both envelopes, which is automatically wrapped in a new store operation.
      Throws:
      StopMergingException - If there should be made no further merging attempt.

    • mergeReaders

      Set<PublicKey> mergeReaders(Set<PublicKey> toStoreReaders, Set<PublicKey> inNetworkReaders)

    • mergeGroups

      Set<String> mergeGroups(Set<String> toStoreGroups, Set<String> inNetworkGroups)