org.apache.flink.cdc.runtime.operators.transform

类 PreTransformOperator

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperator<org.apache.flink.cdc.common.event.Event>

org.apache.flink.cdc.runtime.operators.transform.PreTransformOperator

所有已实现的接口:

Serializable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.streaming.api.operators.Input<org.apache.flink.cdc.common.event.Event>, org.apache.flink.streaming.api.operators.KeyContext, org.apache.flink.streaming.api.operators.KeyContextHandler, org.apache.flink.streaming.api.operators.OneInputStreamOperator<org.apache.flink.cdc.common.event.Event,org.apache.flink.cdc.common.event.Event>, org.apache.flink.streaming.api.operators.SetupableStreamOperator<org.apache.flink.cdc.common.event.Event>, org.apache.flink.streaming.api.operators.StreamOperator<org.apache.flink.cdc.common.event.Event>, org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.CheckpointedStreamOperator

public class PreTransformOperator
extends org.apache.flink.streaming.api.operators.AbstractStreamOperator<org.apache.flink.cdc.common.event.Event>
implements org.apache.flink.streaming.api.operators.OneInputStreamOperator<org.apache.flink.cdc.common.event.Event,org.apache.flink.cdc.common.event.Event>, Serializable

A data process function that filters out columns which aren't (directly & indirectly) referenced.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	PreTransformOperator.Builder Builder of PreTransformOperator.

字段概要

从类继承的字段 org.apache.flink.streaming.api.operators.AbstractStreamOperator

chainingStrategy, config, lastRecordAttributes1, lastRecordAttributes2, latencyStats, LOG, metrics, output, processingTimeService

方法概要

限定符和类型	方法和说明
void	close()
void	finish()
void	initializeState(org.apache.flink.runtime.state.StateInitializationContext context)
static PreTransformOperator.Builder	newBuilder()
void	processElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<org.apache.flink.cdc.common.event.Event> element)
void	processProjectionTransform(org.apache.flink.cdc.common.event.TableId tableId, org.apache.flink.cdc.common.schema.Schema tableSchema, LinkedHashSet<org.apache.flink.cdc.common.schema.Column> referencedColumnsSet, PreTransformer transform)
void	setup(org.apache.flink.streaming.runtime.tasks.StreamTask<?,?> containingTask, org.apache.flink.streaming.api.graph.StreamConfig config, org.apache.flink.streaming.api.operators.Output<org.apache.flink.streaming.runtime.streamrecord.StreamRecord<org.apache.flink.cdc.common.event.Event>> output)
void	snapshotState(org.apache.flink.runtime.state.StateSnapshotContext context)

从类继承的方法 org.apache.flink.streaming.api.operators.AbstractStreamOperator

getChainingStrategy, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, open, prepareSnapshotPreBarrier, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processRecordAttributes, processRecordAttributes1, processRecordAttributes2, processWatermark, processWatermark1, processWatermark2, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setChainingStrategy, setCurrentKey, setKeyContextElement1, setKeyContextElement2, setProcessingTimeService, snapshotState

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.streaming.api.operators.OneInputStreamOperator

setKeyContextElement

从接口继承的方法 org.apache.flink.streaming.api.operators.StreamOperator

getMetricGroup, getOperatorID, initializeState, open, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState

从接口继承的方法 org.apache.flink.api.common.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

从接口继承的方法 org.apache.flink.streaming.api.operators.KeyContext

getCurrentKey, setCurrentKey

从接口继承的方法 org.apache.flink.streaming.api.operators.Input

processLatencyMarker, processRecordAttributes, processWatermark, processWatermarkStatus

从接口继承的方法 org.apache.flink.streaming.api.operators.KeyContextHandler

hasKeyContext

方法详细资料

newBuilder

public static PreTransformOperator.Builder newBuilder()

setup

public void setup(org.apache.flink.streaming.runtime.tasks.StreamTask<?,?> containingTask,
                  org.apache.flink.streaming.api.graph.StreamConfig config,
                  org.apache.flink.streaming.api.operators.Output<org.apache.flink.streaming.runtime.streamrecord.StreamRecord<org.apache.flink.cdc.common.event.Event>> output)

指定者:

setup 在接口中 org.apache.flink.streaming.api.operators.SetupableStreamOperator<org.apache.flink.cdc.common.event.Event>

覆盖:

setup 在类中 org.apache.flink.streaming.api.operators.AbstractStreamOperator<org.apache.flink.cdc.common.event.Event>

initializeState

public void initializeState(org.apache.flink.runtime.state.StateInitializationContext context)
                     throws Exception

指定者:

initializeState 在接口中 org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.CheckpointedStreamOperator

覆盖:

initializeState 在类中 org.apache.flink.streaming.api.operators.AbstractStreamOperator<org.apache.flink.cdc.common.event.Event>

抛出:

Exception

snapshotState

public void snapshotState(org.apache.flink.runtime.state.StateSnapshotContext context)
                   throws Exception

指定者:

snapshotState 在接口中 org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.CheckpointedStreamOperator

覆盖:

snapshotState 在类中 org.apache.flink.streaming.api.operators.AbstractStreamOperator<org.apache.flink.cdc.common.event.Event>

抛出:

Exception

finish

public void finish()
            throws Exception

指定者:

finish 在接口中 org.apache.flink.streaming.api.operators.StreamOperator<org.apache.flink.cdc.common.event.Event>

覆盖:

finish 在类中 org.apache.flink.streaming.api.operators.AbstractStreamOperator<org.apache.flink.cdc.common.event.Event>

抛出:

Exception

close

public void close()
           throws Exception

指定者:

close 在接口中 org.apache.flink.streaming.api.operators.StreamOperator<org.apache.flink.cdc.common.event.Event>

覆盖:

close 在类中 org.apache.flink.streaming.api.operators.AbstractStreamOperator<org.apache.flink.cdc.common.event.Event>

抛出:

Exception

processElement

public void processElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<org.apache.flink.cdc.common.event.Event> element)
                    throws Exception

指定者:

processElement 在接口中 org.apache.flink.streaming.api.operators.Input<org.apache.flink.cdc.common.event.Event>

抛出:

Exception

processProjectionTransform

public void processProjectionTransform(org.apache.flink.cdc.common.event.TableId tableId,
                                       org.apache.flink.cdc.common.schema.Schema tableSchema,
                                       LinkedHashSet<org.apache.flink.cdc.common.schema.Column> referencedColumnsSet,
                                       @Nullable
                                       PreTransformer transform)