Class ClientServerChannel

java.lang.Object
org.apache.cayenne.access.ClientServerChannel
All Implemented Interfaces:
DataChannel

public class ClientServerChannel
extends Object
implements DataChannel
A DataChannel that provides a server-side end of the bridge between client and server objects in a Remote Object Persistence stack.
Since:
1.2
  • Field Details

  • Constructor Details

    • ClientServerChannel

      public ClientServerChannel​(DataContext serverContext)
      Creates a ClientServerChannel that wraps a specified DataContext.
      Since:
      3.0
  • Method Details

    • onQuery

      public QueryResponse onQuery​(ObjectContext context, Query query)
      Description copied from interface: DataChannel
      Executes a query, using provided context to register persistent objects if query returns any objects.
      Specified by:
      onQuery in interface DataChannel
      Parameters:
      context - an ObjectContext that originated the query, used to register result objects.
      Returns:
      a generic response object that encapsulates result of the execution.
    • getParentChannel

      public DataChannel getParentChannel()
      Since:
      3.1
    • getEntityResolver

      public EntityResolver getEntityResolver()
      Description copied from interface: DataChannel
      Returns an EntityResolver instance that contains runtime mapping information.
      Specified by:
      getEntityResolver in interface DataChannel
    • getEventManager

      public EventManager getEventManager()
      Description copied from interface: DataChannel
      Returns an EventManager associated with this channel. Channel may return null if EventManager is not available for any reason.
      Specified by:
      getEventManager in interface DataChannel
    • onSync

      public GraphDiff onSync​(ObjectContext originatingContext, GraphDiff changes, int syncType)
      Description copied from interface: DataChannel
      Processes synchronization request from a child ObjectContext, returning a GraphDiff that describes changes to objects made on the receiving end as a result of synchronization.
      Specified by:
      onSync in interface DataChannel
      Parameters:
      originatingContext - an ObjectContext that initiated the sync. Can be null.
      changes - diff from the context that initiated the sync.
      syncType - One of DataChannel.FLUSH_NOCASCADE_SYNC, DataChannel.FLUSH_CASCADE_SYNC, DataChannel.ROLLBACK_CASCADE_SYNC.