org.apache.calcite.adapter.file

Class FileTableScan

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.TableScan

org.apache.calcite.adapter.file.FileTableScan

All Implemented Interfaces:

Cloneable, EnumerableRel, RelOptNode, RelNode

class FileTableScan
extends TableScan
implements EnumerableRel

Relational expression representing a scan of an HTML table.

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

Trivially modified from CsvTableScan.

Nested Class Summary

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

EnumerableRel.Prefer, EnumerableRel.Result

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

RelNode.Context

Field Summary

Fields

Modifier and Type	Field and Description
private int[]	fields
private FileTable	webTable

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	FileTableScan(RelOptCluster cluster, RelOptTable table, FileTable webTable, int[] fields)

Method Summary

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)

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

accept, computeSelfCost, estimateRowCount, getCollationList, getTable, identity, identity, project

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

accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, 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.calcite.rel.RelNode

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, computeSelfCost, estimateRowCount, 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

Field Detail

webTable

private final FileTable webTable

fields

private final int[] fields

Constructor Detail

FileTableScan

protected FileTableScan(RelOptCluster cluster,
                        RelOptTable table,
                        FileTable webTable,
                        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

implement

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

Specified by:

implement in interface EnumerableRel