org.apache.beam.sdk.extensions.sql.impl.rel

Class BeamIOSourceRel

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.TableScan

org.apache.beam.sdk.extensions.sql.impl.rel.BeamIOSourceRel

All Implemented Interfaces:

java.lang.Cloneable, BeamRelNode, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.RelNode

public class BeamIOSourceRel
extends org.apache.calcite.rel.core.TableScan
implements BeamRelNode

BeamRelNode to replace a TableScan node.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.rel.RelNode

org.apache.calcite.rel.RelNode.Context

Field Summary

Fields inherited from class org.apache.calcite.rel.core.TableScan

table

Fields inherited from class org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Constructor and Description
BeamIOSourceRel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelOptTable table, BeamSqlTable beamTable, java.util.Map<java.lang.String,java.lang.String> pipelineOptions, BeamCalciteTable calciteTable)

Method Summary

Modifier and Type	Method and Description
PTransform<PCollectionList<Row>,PCollection<Row>>	buildPTransform()
org.apache.calcite.plan.RelOptCost	computeSelfCost(org.apache.calcite.plan.RelOptPlanner planner, org.apache.calcite.rel.metadata.RelMetadataQuery mq)
double	estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery mq)
protected BeamSqlTable	getBeamSqlTable()
java.util.Map<java.lang.String,java.lang.String>	getPipelineOptions() Perform a DFS(Depth-First-Search) to find the PipelineOptions config.
PCollection.IsBounded	isBounded() Whether the collection of rows represented by this relational expression is bounded (known to be finite) or unbounded (may or may not be finite).

Methods inherited from class org.apache.calcite.rel.core.TableScan

accept, deriveRowType, explainTerms, getCollationList, getTable, identity, identity, project

Methods inherited from class org.apache.calcite.rel.AbstractRelNode

accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, copy, explain, getChildExps, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTraitSet, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput, sole, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.beam.sdk.extensions.sql.impl.rel.BeamRelNode

getPCollectionInputs

Methods inherited from interface org.apache.calcite.rel.RelNode

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, copy, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

Methods inherited from interface org.apache.calcite.plan.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

Constructor Detail

BeamIOSourceRel

public BeamIOSourceRel(org.apache.calcite.plan.RelOptCluster cluster,
                       org.apache.calcite.plan.RelOptTable table,
                       BeamSqlTable beamTable,
                       java.util.Map<java.lang.String,java.lang.String> pipelineOptions,
                       BeamCalciteTable calciteTable)

Method Detail

estimateRowCount

public double estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Specified by:

estimateRowCount in interface org.apache.calcite.rel.RelNode

Overrides:

estimateRowCount in class org.apache.calcite.rel.core.TableScan

isBounded

public PCollection.IsBounded isBounded()

Description copied from interface: BeamRelNode

Whether the collection of rows represented by this relational expression is bounded (known to be finite) or unbounded (may or may not be finite).

Specified by:

isBounded in interface BeamRelNode

Returns:

bounded if and only if all PCollection inputs are bounded

buildPTransform

public PTransform<PCollectionList<Row>,PCollection<Row>> buildPTransform()

Specified by:

buildPTransform in interface BeamRelNode

computeSelfCost

public org.apache.calcite.plan.RelOptCost computeSelfCost(org.apache.calcite.plan.RelOptPlanner planner,
                                                          org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Specified by:

computeSelfCost in interface org.apache.calcite.rel.RelNode

Overrides:

computeSelfCost in class org.apache.calcite.rel.core.TableScan

getBeamSqlTable

protected BeamSqlTable getBeamSqlTable()

getPipelineOptions

public java.util.Map<java.lang.String,java.lang.String> getPipelineOptions()

Description copied from interface: BeamRelNode

Perform a DFS(Depth-First-Search) to find the PipelineOptions config.

Specified by:

getPipelineOptions in interface BeamRelNode