org.apache.calcite.adapter.csv

Class CsvTableScan

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.TableScan

org.apache.calcite.adapter.csv.CsvTableScan

All Implemented Interfaces:

Cloneable, EnumerableRel, RelOptNode, RelNode

public class CsvTableScan
extends TableScan
implements EnumerableRel

Relational expression representing a scan of a CSV file.

Like any table scan, it serves as a leaf node of a query tree.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.adapter.enumerable.EnumerableRel

EnumerableRel.Prefer, EnumerableRel.Result

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

Fields inherited from interface org.apache.calcite.adapter.enumerable.EnumerableRel

FILTER_FACTORY, PROJECT_FACTORY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CsvTableScan(RelOptCluster cluster, RelOptTable table, CsvTranslatableTable csvTable, int[] fields)

Method Summary

Methods

Modifier and Type	Method and Description
RelNode	copy(RelTraitSet traitSet, List<RelNode> inputs)
RelDataType	deriveRowType()
RelWriter	explainTerms(RelWriter pw)
EnumerableRel.Result	implement(EnumerableRelImplementor implementor, EnumerableRel.Prefer pref)
void	register(RelOptPlanner planner)

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

accept, computeSelfCost, getCollationList, getRows, getTable, identity, identity, isKey, project

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

accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeDigest, explain, getChildExps, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getQuery, getRelTypeName, getRowType, getTraitSet, getVariablesStopped, isDistinct, isValid, metadata, onRegister, recomputeDigest, 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.calcite.rel.RelNode

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

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

getCluster, getDescription, getDigest, getId, getTraitSet

Constructor Detail

CsvTableScan

protected CsvTableScan(RelOptCluster cluster,
            RelOptTable table,
            CsvTranslatableTable csvTable,
            int[] fields)

Method Detail

copy

public RelNode copy(RelTraitSet traitSet,
           List<RelNode> inputs)

Specified by:

copy in interface RelNode

Overrides:

copy in class AbstractRelNode

explainTerms

public RelWriter explainTerms(RelWriter pw)

Overrides:

explainTerms in class TableScan

deriveRowType

public RelDataType deriveRowType()

Overrides:

deriveRowType in class TableScan

register

public void register(RelOptPlanner planner)

Specified by:

register in interface RelNode

Overrides:

register in class AbstractRelNode

implement

public EnumerableRel.Result implement(EnumerableRelImplementor implementor,
                             EnumerableRel.Prefer pref)

Specified by:

implement in interface EnumerableRel