org.apache.calcite.adapter.spark

Class JdbcToSparkConverter

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.convert.ConverterImpl

org.apache.calcite.adapter.spark.JdbcToSparkConverter

All Implemented Interfaces:

Cloneable, SparkRel, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.convert.Converter, org.apache.calcite.rel.RelNode

public class JdbcToSparkConverter
extends org.apache.calcite.rel.convert.ConverterImpl
implements SparkRel

Relational expression representing a scan of a table in a JDBC data source that returns its results as a Spark RDD.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.adapter.spark.SparkRel

SparkRel.Implementor, SparkRel.Result

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.convert.ConverterImpl

inTraits, traitDef

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

input

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

digest, id, rowType, traitSet

Fields inherited from interface org.apache.calcite.adapter.spark.SparkRel

CONVENTION

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JdbcToSparkConverter(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, org.apache.calcite.rel.RelNode input)

Method Summary

Modifier and Type	Method and Description
@Nullable org.apache.calcite.plan.RelOptCost	computeSelfCost(org.apache.calcite.plan.RelOptPlanner planner, org.apache.calcite.rel.metadata.RelMetadataQuery mq)
org.apache.calcite.rel.RelNode	copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs)
SparkRel.Result	implementSpark(SparkRel.Implementor implementor)

Methods inherited from class org.apache.calcite.rel.convert.ConverterImpl

cannotImplement, getInputTraits, getTraitDef

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

childrenAccept, deriveRowType, estimateRowCount, explainTerms, getInput, getInputs, replaceInput

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

accept, accept, collectVariablesSet, collectVariablesUsed, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

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

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, deepEquals, deepHashCode, estimateRowCount, explain, explain, fieldIsNullable, getConvention, getCorrelVariable, getDigest, getExpectedInputRowType, getInput, getInputs, getRelDigest, getRelTypeName, getRowType, getTable, getVariablesSet, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

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

getCluster, getDescription, getId, getTraitSet

Methods inherited from interface org.apache.calcite.rel.convert.Converter

getInput

Constructor Detail

JdbcToSparkConverter

protected JdbcToSparkConverter(org.apache.calcite.plan.RelOptCluster cluster,
                               org.apache.calcite.plan.RelTraitSet traits,
                               org.apache.calcite.rel.RelNode input)

Method Detail

copy

public org.apache.calcite.rel.RelNode copy(org.apache.calcite.plan.RelTraitSet traitSet,
                                           List<org.apache.calcite.rel.RelNode> inputs)

Specified by:

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

Overrides:

copy in class org.apache.calcite.rel.AbstractRelNode

computeSelfCost

public @Nullable 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.convert.ConverterImpl

implementSpark

public SparkRel.Result implementSpark(SparkRel.Implementor implementor)

Specified by:

implementSpark in interface SparkRel