Package i5.las2peer.api.persistency

Interface EnvelopeCollisionHandler

public interface EnvelopeCollisionHandler

This interface can be used to implement a handler that is called if a collision occurs during a store operation.

Method Summary

Modifier and Type	Method	Description
Envelope	onCollision(Envelope toStore, Envelope inNetwork)	This method is called if an envelope is already known for the given identifier and version.

Method Details

onCollision

Envelope onCollision(Envelope toStore,
 Envelope inNetwork)
              throws MergeFailedException

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.

Returns:

The merged content from both envelopes, which is automatically wrapped in a new store operation.

Throws:

MergeFailedException - If there should be made no further merging attempt.