org.apache.calcite.adapter.splunk

Class SplunkTableScan

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.TableScan

org.apache.calcite.adapter.splunk.SplunkTableScan

All Implemented Interfaces:

Cloneable, EnumerableRel, RelOptNode, RelNode

public class SplunkTableScan
extends TableScan
implements EnumerableRel

Relational expression representing a scan of Splunk.

Splunk does not have tables, but it's easiest to imagine that a Splunk instance is one large table. This "table" does not have a fixed set of columns (Splunk calls them "fields") but each query specifies the fields that it wants. It also specifies a search expression, and optionally earliest and latest dates.

Nested Class Summary

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

EnumerableRel.Prefer, EnumerableRel.Result

Field Summary

Fields

Modifier and Type	Field and Description
(package private) String	earliest
(package private) List<String>	fieldList
(package private) String	latest
private static Method	METHOD
(package private) String	search
(package private) SplunkTable	splunkTable

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	SplunkTableScan(RelOptCluster cluster, RelOptTable table, SplunkTable splunkTable, String search, String earliest, String latest, List<String> fieldList)

Method Summary

Modifier and Type	Method and Description
private static Expression	constantStringList(List<String> strings)
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, estimateRowCount, 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, 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, copy, estimateRowCount, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, replaceInput

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

getCluster, getDescription, getDigest, getId, getTraitSet

Field Detail

splunkTable

final SplunkTable splunkTable

search

final String search

earliest

final String earliest

latest

final String latest

fieldList

final List<String> fieldList

METHOD

private static final Method METHOD

Constructor Detail

SplunkTableScan

protected SplunkTableScan(RelOptCluster cluster,
                          RelOptTable table,
                          SplunkTable splunkTable,
                          String search,
                          String earliest,
                          String latest,
                          List<String> fieldList)

Method Detail

explainTerms

public RelWriter explainTerms(RelWriter pw)

Overrides:

explainTerms in class TableScan

register

public void register(RelOptPlanner planner)

Specified by:

register in interface RelNode

Overrides:

register in class AbstractRelNode

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

constantStringList

private static Expression constantStringList(List<String> strings)