Package org.apache.flink.table.planner.plan.nodes.exec.stream

Class StreamExecMultipleInput

java.lang.Object

org.apache.flink.table.planner.plan.nodes.exec.ExecNodeBase<RowData>

org.apache.flink.table.planner.plan.nodes.exec.stream.StreamExecMultipleInput

All Implemented Interfaces:

ExecNode<RowData>, ExecNodeTranslator<RowData>, FusionCodegenExecNode, StreamExecNode<RowData>

public class StreamExecMultipleInput
extends ExecNodeBase<RowData>
implements StreamExecNode<RowData>

Stream ExecNode for multiple input which contains a sub-graph of ExecNodes. The root node of the sub-graph is rootNode, and the leaf nodes of the sub-graph are the output nodes of the #getInputNodes().

The following example shows a graph of ExecNodes with multiple input node:

          Sink
           |
 +---------+--------+
 |         |        |
 |       Join       |
 |     /     \      | StreamExecMultipleInput
 |   Agg1    Agg2   |
 |    |       |     |
 +----+-------+-----+
      |       |
 Exchange1 Exchange2
      |       |
    Scan1   Scan2
 

The multiple input node contains three nodes: `Join`, `Agg1` and `Agg2`. `Join` is the root node (rootNode) of the sub-graph, `Agg1` and `Agg2` are the leaf nodes of the sub-graph, `Exchange1` and `Exchange2` are the input nodes of the multiple input node.

Field Summary

Fields inherited from interface org.apache.flink.table.planner.plan.nodes.exec.ExecNode

FIELD_NAME_CONFIGURATION, FIELD_NAME_DESCRIPTION, FIELD_NAME_ID, FIELD_NAME_INPUT_PROPERTIES, FIELD_NAME_OUTPUT_TYPE, FIELD_NAME_STATE, FIELD_NAME_TYPE

Constructor Summary

Constructors

Constructor	Description
StreamExecMultipleInput(ReadableConfig tableConfig, List<InputProperty> inputProperties, ExecNode<?> rootNode, String description)

Method Summary

Modifier and Type	Method	Description
protected Transformation<RowData>	translateToPlanInternal(org.apache.flink.table.planner.delegation.PlannerBase planner, ExecNodeConfig config)	Internal method, translates this node into a Flink operator.

Methods inherited from class org.apache.flink.table.planner.plan.nodes.exec.ExecNodeBase

accept, createFormattedTransformationDescription, createFormattedTransformationName, createTransformationDescription, createTransformationMeta, createTransformationMeta, createTransformationName, createTransformationUid, getContextFromAnnotation, getDescription, getId, getInputEdges, getInputProperties, getOutputType, getPersistedConfig, getSimplifiedName, getTransformation, inputsContainSingleton, replaceInputEdge, setCompiled, setInputEdges, supportFusionCodegen, translateToFusionCodegenSpec, translateToFusionCodegenSpecInternal, translateToPlan

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.planner.plan.nodes.exec.ExecNode

accept, getDescription, getId, getInputEdges, getInputProperties, getOutputType, replaceInputEdge, setCompiled, setInputEdges

Methods inherited from interface org.apache.flink.table.planner.plan.nodes.exec.ExecNodeTranslator

translateToPlan

Methods inherited from interface org.apache.flink.table.planner.plan.nodes.exec.FusionCodegenExecNode

supportFusionCodegen, translateToFusionCodegenSpec

Constructor Detail

StreamExecMultipleInput

public StreamExecMultipleInput(ReadableConfig tableConfig,
                               List<InputProperty> inputProperties,
                               ExecNode<?> rootNode,
                               String description)

Method Detail

translateToPlanInternal

protected Transformation<RowData> translateToPlanInternal(org.apache.flink.table.planner.delegation.PlannerBase planner,
                                                          ExecNodeConfig config)

Description copied from class: ExecNodeBase

Internal method, translates this node into a Flink operator.

Specified by:

translateToPlanInternal in class ExecNodeBase<RowData>

Parameters:

planner - The planner.

config - per-ExecNode configuration that contains the merged configuration from various layers which all the nodes implementing this method should use, instead of retrieving configuration from the planner. For more details check ExecNodeConfig.