com.hazelcast.nio.serialization

Interface DataSerializable

All Known Subinterfaces:

IdentifiedDataSerializable, Member, ScheduledTaskStatistics, SplitBrainMergePolicy<V,T,R>, TenantControl, TypedDataSerializable

All Known Implementing Classes:

AbstractCacheConfig, com.hazelcast.spi.impl.merge.AbstractSplitBrainMergePolicy, AbstractWanPublisherConfig, Address, AliasedDiscoveryConfig, AttributeConfig, AwsConfig, AzureConfig, BitmapIndexOptions, BTreeIndexConfig, CacheConfig, CachePartitionLostListenerConfig, CacheSimpleConfig, CacheSimpleConfig.ExpiryPolicyFactoryConfig, CacheSimpleConfig.ExpiryPolicyFactoryConfig.DurationConfig, CacheSimpleConfig.ExpiryPolicyFactoryConfig.TimedExpiryPolicyFactoryConfig, CacheSimpleEntryListenerConfig, CardinalityEstimatorConfig, CollectionConfig, DAG, DataPersistenceConfig, DiscardMergePolicy, DiscoveryConfig, DiscoveryStrategyConfig, DiskTierConfig, DurableExecutorConfig, Echo, Edge, EdgeConfig, EntryListenerConfig, EurekaConfig, EventJournalConfig, EvictionConfig, ExecutorConfig, ExpirationTimeMergePolicy, ExternalDataStoreConfig, FlakeIdGeneratorConfig, GcpConfig, HazelcastExpiryPolicy, HigherHitsMergePolicy, HotRestartConfig, HyperLogLogMergePolicy, IndexConfig, ItemListenerConfig, JobConfig, JobMetrics, KubernetesConfig, LatestAccessMergePolicy, LatestUpdateMergePolicy, ListConfig, ListenerConfig, MapConfig, MapPartitionLostListenerConfig, MapStoreConfig, Measurement, MemberVersion, MemoryTierConfig, MergePolicyConfig, MerkleTreeConfig, MultiMapConfig, NearCacheConfig, NearCachePreloaderConfig, PartitionAwareKey, PartitioningStrategyConfig, PassThroughMergePolicy, PermissionConfig, PNCounterConfig, PredicateConfig, ProcessorMetaSupplier.ExpectNothingProcessorSupplier, ProcessorMetaSupplier.SpecificMemberPms, PutIfAbsentMergePolicy, QueryCacheConfig, QueueConfig, QueueStoreConfig, ReliableTopicConfig, ReplicatedMapConfig, ResourceConfig, RingbufferConfig, RingbufferStoreConfig, ScheduledExecutorConfig, ScheduledTaskHandler, SetConfig, SimpleTokenCredentials, SplitBrainProtectionConfig, SplitBrainProtectionListenerConfig, TieredStoreConfig, TopicConfig, TransactionOptions, UsernamePasswordCredentials, Version, Vertex, WanBatchPublisherConfig, WanConsumerConfig, WanCustomPublisherConfig, WanReplicationConfig, WanReplicationRef, WanSyncConfig

public interface DataSerializable

DataSerializable is a serialization method alternative to standard Java serialization. DataSerializable is very similar to Externalizable and relies on reflection to create instances using class names.

Conforming classes must provide a no-arguments constructor to facilitate the creation of their instances during the deserialization. Anonymous, local and non-static member classes can't satisfy this requirement since their constructors are always accepting an instance of the enclosing class as an implicit argument, therefore they must be avoided.

See Also:

IdentifiedDataSerializable, Portable, VersionedPortable

Method Summary

Modifier and Type	Method and Description
void	readData(ObjectDataInput in) Reads fields from the input stream
void	writeData(ObjectDataOutput out) Writes object fields to output stream

Method Detail

writeData

void writeData(ObjectDataOutput out)
        throws IOException

Writes object fields to output stream

Parameters:

out - output

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

readData

void readData(ObjectDataInput in)
       throws IOException

Reads fields from the input stream

Parameters:

in - input

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the input stream has been closed.