com.google.cloud.dataflow.sdk.util.state

Class InMemoryStateInternals

java.lang.Object

com.google.cloud.dataflow.sdk.util.state.MergingStateInternals

com.google.cloud.dataflow.sdk.util.state.InMemoryStateInternals

All Implemented Interfaces:

StateInternals

public class InMemoryStateInternals
extends MergingStateInternals

In-memory implementation of StateInternals. Used in BatchModeExecutionContext and for running tests that need state.

Field Summary

Fields

Modifier and Type	Field and Description
protected StateTable	inMemoryState

Constructor Summary

Constructors

Constructor and Description
InMemoryStateInternals()

Method Summary

Modifier and Type	Method and Description
void	clear()
protected boolean	isEmptyForTesting(State state) Return true if the given state is empty.
<T extends State> T	state(StateNamespace namespace, StateTag<T> address) Return the state associated with address in the specified namespace.

Methods inherited from class com.google.cloud.dataflow.sdk.util.state.MergingStateInternals

mergedState

Methods inherited from class java.lang.Object

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

Field Detail

inMemoryState

protected final StateTable inMemoryState

Constructor Detail

InMemoryStateInternals

public InMemoryStateInternals()

Method Detail

clear

public void clear()

isEmptyForTesting

protected boolean isEmptyForTesting(State state)

Return true if the given state is empty. This is used by the test framework to make sure that the state has been properly cleaned up.

state

public <T extends State> T state(StateNamespace namespace,
                                 StateTag<T> address)

Description copied from interface: StateInternals

Return the state associated with address in the specified namespace.