IN
- Input type@Internal public class QueryableValueStateOperator<IN> extends AbstractStreamOperator<IN>
Modifier and Type | Field and Description |
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protected String |
registrationName
Name under which the queryable state is registered.
|
protected S |
state
The state instance created on open.
|
protected StateDescriptor<? extends S,?> |
stateDescriptor
State descriptor for the queryable state instance.
|
chainingStrategy, config, latencyStats, LOG, metrics, output, processingTimeService
Constructor and Description |
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QueryableValueStateOperator(String registrationName,
StateDescriptor<ValueState<IN>,IN> stateDescriptor) |
Modifier and Type | Method and Description |
---|---|
void |
open()
This method is called immediately before any elements are processed, it should contain the
operator's initialization logic, e.g. state initialization.
|
void |
processElement(StreamRecord<IN> element)
Processes one element that arrived on this input of the
MultipleInputStreamOperator . |
close, finish, getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processWatermark, processWatermark1, processWatermark2, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setProcessingTimeService, setup, snapshotState, snapshotState
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
setKeyContextElement
close, finish, getMetricGroup, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState
notifyCheckpointAborted, notifyCheckpointComplete
getCurrentKey, setCurrentKey
processLatencyMarker, processWatermark, processWatermarkStatus
hasKeyContext
protected final StateDescriptor<? extends S extends State,?> stateDescriptor
protected final String registrationName
protected transient S extends State state
public QueryableValueStateOperator(String registrationName, StateDescriptor<ValueState<IN>,IN> stateDescriptor)
public void processElement(StreamRecord<IN> element) throws Exception
Input
MultipleInputStreamOperator
.
This method is guaranteed to not be called concurrently with other methods of the operator.Exception
public void open() throws Exception
AbstractStreamOperator
The default implementation does nothing.
open
in interface StreamOperator<IN>
open
in class AbstractStreamOperator<IN>
Exception
- An exception in this method causes the operator to fail.Copyright © 2014–2024 The Apache Software Foundation. All rights reserved.