Package com.here.platform.data.client.flink.impl

Class NeverEmitSourceReader

java.lang.Object

com.here.platform.data.client.flink.impl.NeverEmitSourceReader

All Implemented Interfaces:

AutoCloseable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.api.connector.source.SourceReader<org.apache.flink.types.Row,SingleSplitSourceUtils.Split>

public class NeverEmitSourceReader
extends Object
implements org.apache.flink.api.connector.source.SourceReader<org.apache.flink.types.Row,SingleSplitSourceUtils.Split>

SourceReader that never emits – just keeps the source alive. Shared by DummySource (IndexLayerTableSink) and RetractDummySource (VolatileLayerTableSink).

Constructor Summary

Constructors

Constructor	Description
NeverEmitSourceReader(Schema schema)

Method Summary

Modifier and Type	Method	Description
void	addSplits(List<SingleSplitSourceUtils.Split> splits)
void	close()
CompletableFuture<Void>	isAvailable()
void	notifyNoMoreSplits()
org.apache.flink.core.io.InputStatus	pollNext(org.apache.flink.api.connector.source.ReaderOutput<org.apache.flink.types.Row> output)
List<SingleSplitSourceUtils.Split>	snapshotState(long checkpointId)
void	start()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.api.common.state.CheckpointListener

notifyCheckpointAborted

Methods inherited from interface org.apache.flink.api.connector.source.SourceReader

handleSourceEvents, notifyCheckpointComplete, pauseOrResumeSplits

Constructor Details

NeverEmitSourceReader

public NeverEmitSourceReader(Schema schema)

Method Details

addSplits

public void addSplits(List<SingleSplitSourceUtils.Split> splits)

Specified by:

addSplits in interface org.apache.flink.api.connector.source.SourceReader<org.apache.flink.types.Row,SingleSplitSourceUtils.Split>

close

public void close()

Specified by:

close in interface AutoCloseable

isAvailable

public CompletableFuture<Void> isAvailable()

Specified by:

isAvailable in interface org.apache.flink.api.connector.source.SourceReader<org.apache.flink.types.Row,SingleSplitSourceUtils.Split>

notifyNoMoreSplits

public void notifyNoMoreSplits()

Specified by:

notifyNoMoreSplits in interface org.apache.flink.api.connector.source.SourceReader<org.apache.flink.types.Row,SingleSplitSourceUtils.Split>

pollNext

public org.apache.flink.core.io.InputStatus pollNext(org.apache.flink.api.connector.source.ReaderOutput<org.apache.flink.types.Row> output)

Specified by:

pollNext in interface org.apache.flink.api.connector.source.SourceReader<org.apache.flink.types.Row,SingleSplitSourceUtils.Split>

snapshotState

public List<SingleSplitSourceUtils.Split> snapshotState(long checkpointId)

Specified by:

snapshotState in interface org.apache.flink.api.connector.source.SourceReader<org.apache.flink.types.Row,SingleSplitSourceUtils.Split>

start

public void start()

Specified by:

start in interface org.apache.flink.api.connector.source.SourceReader<org.apache.flink.types.Row,SingleSplitSourceUtils.Split>