org.apache.beam.runners.samza.runtime

Class SamzaStoreStateInternals<K>

java.lang.Object

org.apache.beam.runners.samza.runtime.SamzaStoreStateInternals<K>

All Implemented Interfaces:

org.apache.beam.runners.core.StateInternals

public class SamzaStoreStateInternals<K>
extends java.lang.Object
implements org.apache.beam.runners.core.StateInternals

StateInternals that uses Samza local KeyValueStore to manage state.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SamzaStoreStateInternals.ByteArray Wrapper of byte[] so it can used as key in the KeyValueStore for caching.
static class	SamzaStoreStateInternals.ByteArraySerdeFactory Factory class to provide SamzaStoreStateInternals.ByteArraySerdeFactory.ByteArraySerde.
static class	SamzaStoreStateInternals.Factory<K> Factory class to create SamzaStoreStateInternals.
static class	SamzaStoreStateInternals.StateValue<T> Wrapper for state value so that unencoded value can be read directly from the cache of KeyValueStore.
static class	SamzaStoreStateInternals.StateValueSerdeFactory Factory class to provide SamzaStoreStateInternals.StateValueSerdeFactory.StateValueSerde.

Method Summary

Modifier and Type	Method and Description
K	getKey()
<T extends org.apache.beam.sdk.state.State> T	state(org.apache.beam.runners.core.StateNamespace stateNamespace, org.apache.beam.runners.core.StateTag<T> stateTag)
<V extends org.apache.beam.sdk.state.State> V	state(org.apache.beam.runners.core.StateNamespace namespace, org.apache.beam.runners.core.StateTag<V> address, org.apache.beam.sdk.state.StateContext<?> stateContext)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getKey

public K getKey()

Specified by:

getKey in interface org.apache.beam.runners.core.StateInternals

state

public <T extends org.apache.beam.sdk.state.State> T state(org.apache.beam.runners.core.StateNamespace stateNamespace,
                                                           org.apache.beam.runners.core.StateTag<T> stateTag)

Specified by:

state in interface org.apache.beam.runners.core.StateInternals

state

public <V extends org.apache.beam.sdk.state.State> V state(org.apache.beam.runners.core.StateNamespace namespace,
                                                           org.apache.beam.runners.core.StateTag<V> address,
                                                           org.apache.beam.sdk.state.StateContext<?> stateContext)

Specified by:

state in interface org.apache.beam.runners.core.StateInternals