org.infinispan.marshall
Class AbstractExternalizer<T>

java.lang.Object
  extended by org.infinispan.marshall.AbstractExternalizer<T>
All Implemented Interfaces:
Externalizer<T>
Direct Known Subclasses:
AbstractWheelConsistentHash.Externalizer, ArrayListExternalizer, AtomicHashMap.Externalizer, AtomicHashMapDelta.Externalizer, Bucket.Externalizer, ByteArrayKey.Externalizer, ChunkCacheKey.Externalizer, ClearOperation.Externalizer, DldGlobalTransaction.Externalizer, ExceptionResponse.Externalizer, ExperimentalDefaultConsistentHash.Externalizer, ExtendedResponse.Externalizer, FileCacheKey.Externalizer, FileListCacheKey.Externalizer, FileMetadata.Externalizer, FileReadLockKey.Externalizer, Fqn.Externalizer, GlobalTransaction.Externalizer, ImmortalCacheEntry.Externalizer, ImmortalCacheValue.Externalizer, Immutables.ImmutableMapWrapperExternalizer, JGroupsAddress.Externalizer, LinkedListExternalizer, MapExternalizer, MarshalledValue.Externalizer, MortalCacheEntry.Externalizer, MortalCacheValue.Externalizer, NodeKey.Externalizer, NodeTopologyInfo.Externalizer, PutOperation.Externalizer, RecoveryAwareDldGlobalTransaction.Externalizer, RecoveryAwareGlobalTransaction.Externalizer, RemoteTransactionLogDetails.Externalizer, RemoveOperation.Externalizer, ReplicableCommandExternalizer, RequestIgnoredResponse.Externalizer, SerializableXid.XidExternalizer, SetExternalizer, SingletonListExternalizer, SuccessfulResponse.Externalizer, TransactionLog.LogEntry.Externalizer, TransientCacheEntry.Externalizer, TransientCacheValue.Externalizer, TransientMortalCacheEntry.Externalizer, TransientMortalCacheValue.Externalizer, UnionConsistentHash.Externalizer, UnsuccessfulResponse.Externalizer, UnsureResponse.Externalizer

public abstract class AbstractExternalizer<T>
extends Object
implements Externalizer<T>

Base class for Externalizer implementations that offers default implementations for some of its methods.

Since:
5.0
Author:
Galder ZamarreƱo

Constructor Summary
AbstractExternalizer()
           
 
Method Summary
 Integer getId()
          Returns an integer that identifies the externalizer type.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.infinispan.marshall.Externalizer
getTypeClasses, readObject, writeObject
 

Constructor Detail

AbstractExternalizer

public AbstractExternalizer()
Method Detail

getId

public Integer getId()
Description copied from interface: Externalizer
Returns an integer that identifies the externalizer type. This is used at read time to figure out which Externalizer should read the contents of the incoming buffer. Using a positive integer allows for very efficient variable length encoding of numbers, and it's much more efficient than shipping Externalizer implementation class information around. Negative values are not allowed. Implementers of this interface can use any positive integer as long as it does not clash with any other identifier in the system. You can find information on the pre-assigned identifier ranges in here. It's highly recommended that maintaining of these identifiers is done in a centralized way and you can do so by making annotations reference a set of statically defined identifiers in a separate class or interface. Such class/interface gives a global view of the identifiers in use and so can make it easier to assign new ids. Implementors can optionally avoid giving a meaningful implementation to this method (i.e. return null) and instead rely on XML or programmatic configuration to provide the Externalizer id. If no id can be determined via the implementation or XML/programmatic configuration, an error will be reported. If an id has been defined both via the implementation and XML/programmatic configuration, the value defined via XML/programmatic configuration will be used ignoring the other.

Specified by:
getId in interface Externalizer<T>
Returns:
A positive identifier for the Externalizer.

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