Class ReplicatedMap<K,V>

java.lang.Object
org.apache.catalina.tribes.tipis.AbstractReplicatedMap<K,V>
org.apache.catalina.tribes.tipis.ReplicatedMap<K,V>
Type Parameters:
K - The type of Key
V - The type of Value
All Implemented Interfaces:
Serializable, Map<K,V>, ChannelListener, RpcCallback, Heartbeat, MembershipListener

public class ReplicatedMap<K,V> extends AbstractReplicatedMap<K,V>
All-to-all replication for a hash map implementation. Each node in the cluster will carry an identical copy of the map.

This map implementation doesn't have a background thread running to replicate changes. If you do have changes without invoking put/remove then you need to invoke one of the following methods:
  • replicate(Object,boolean) - replicates only the object that belongs to the key
  • replicate(boolean) - Scans the entire map for changes and replicates data
the boolean value in the replicate method used to decide whether to only replicate objects that implement the ReplicatedMapEntry interface or to replicate all objects. If an object doesn't implement the ReplicatedMapEntry interface each time the object gets replicated the entire object gets serialized, hence a call to replicate(true) will replicate all objects in this map that are using this node as primary.

REMEMBER TO CALL breakdown() when you are done with the map to avoid memory leaks.

TODO implement periodic sync/transfer thread
TODO memberDisappeared, should do nothing except change map membership by default it relocates the primary objects
See Also:
  • Constructor Details

    • ReplicatedMap

      public ReplicatedMap(AbstractReplicatedMap.MapOwner owner, Channel channel, long timeout, String mapContextName, int initialCapacity, float loadFactor, ClassLoader[] cls)
      Creates a new map
      Parameters:
      owner - The map owner
      channel - The channel to use for communication
      timeout - long - timeout for RPC messages
      mapContextName - String - unique name for this map, to allow multiple maps per channel
      initialCapacity - int - the size of this map, see HashMap
      loadFactor - float - load factor, see HashMap
      cls - Class loaders
    • ReplicatedMap

      public ReplicatedMap(AbstractReplicatedMap.MapOwner owner, Channel channel, long timeout, String mapContextName, int initialCapacity, ClassLoader[] cls)
      Creates a new map
      Parameters:
      owner - The map owner
      channel - The channel to use for communication
      timeout - long - timeout for RPC messages
      mapContextName - String - unique name for this map, to allow multiple maps per channel
      initialCapacity - int - the size of this map, see HashMap
      cls - Class loaders
    • ReplicatedMap

      public ReplicatedMap(AbstractReplicatedMap.MapOwner owner, Channel channel, long timeout, String mapContextName, ClassLoader[] cls)
      Creates a new map
      Parameters:
      owner - The map owner
      channel - The channel to use for communication
      timeout - long - timeout for RPC messages
      mapContextName - String - unique name for this map, to allow multiple maps per channel
      cls - Class loaders
    • ReplicatedMap

      public ReplicatedMap(AbstractReplicatedMap.MapOwner owner, Channel channel, long timeout, String mapContextName, ClassLoader[] cls, boolean terminate)
      Creates a new map
      Parameters:
      owner - The map owner
      channel - The channel to use for communication
      timeout - long - timeout for RPC messages
      mapContextName - String - unique name for this map, to allow multiple maps per channel
      cls - Class loaders
      terminate - boolean - Flag for whether to terminate this map that failed to start.
  • Method Details