org.apache.calcite.adapter.druid

Class DruidJsonFilter

java.lang.Object

org.apache.calcite.adapter.druid.DruidJsonFilter

All Implemented Interfaces:

DruidJson

Direct Known Subclasses:

DruidJsonFilter.JsonBound, DruidJsonFilter.JsonCompositeFilter, DruidJsonFilter.JsonExpressionFilter, DruidJsonFilter.JsonInFilter, DruidJsonFilter.JsonSelector

abstract class DruidJsonFilter
extends Object
implements DruidJson

Filter element of a Druid "groupBy" or "topN" query.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	DruidJsonFilter.JsonBound Bound filter.
private static class	DruidJsonFilter.JsonCompositeFilter Filter that combines other filters using a boolean operator.
protected static class	DruidJsonFilter.JsonDimHavingFilter Druid Having Filter spec
static class	DruidJsonFilter.JsonExpressionFilter Druid Expression filter.
protected static class	DruidJsonFilter.JsonInFilter IN filter.
private static class	DruidJsonFilter.JsonSelector Equality filter.
protected static class	DruidJsonFilter.Type Supported filter types

Field Summary

Fields

Modifier and Type	Field and Description
protected DruidJsonFilter.Type	type

Constructor Summary

Constructors

Modifier	Constructor and Description
private	DruidJsonFilter(DruidJsonFilter.Type type)

Method Summary

Modifier and Type	Method and Description
static DruidJsonFilter	getSelectorFilter(String column, String value, ExtractionFunction extractionFunction)
private static DruidJsonFilter	toBetweenDruidFilter(RexNode rexNode, RelDataType rowType, DruidQuery query)
private static DruidJsonFilter	toBoundDruidFilter(RexNode rexNode, RelDataType rowType, DruidQuery druidQuery)
private static DruidJsonFilter	toDruidExpressionFilter(RexNode rexNode, RelDataType rowType, DruidQuery query)
(package private) static DruidJsonFilter	toDruidFilters(RexNode rexNode, RelDataType rowType, DruidQuery druidQuery)
private static String	toDruidLiteral(RexNode rexNode, RelDataType rowType, DruidQuery druidQuery)
private static DruidJsonFilter	toEqualityKindDruidFilter(RexNode rexNode, RelDataType rowType, DruidQuery druidQuery)
private static DruidJsonFilter	toInKindDruidFilter(RexNode e, RelDataType rowType, DruidQuery druidQuery)
private static DruidJsonFilter	toIsNullKindDruidFilter(RexNode rexNode, RelDataType rowType, DruidQuery druidQuery)
protected static DruidJsonFilter	toNotDruidFilter(DruidJsonFilter druidJsonFilter)
private static DruidJsonFilter	toSimpleDruidFilter(RexNode e, RelDataType rowType, DruidQuery druidQuery)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.adapter.druid.DruidJson

write

Field Detail

type

protected final DruidJsonFilter.Type type

Constructor Detail

DruidJsonFilter

private DruidJsonFilter(DruidJsonFilter.Type type)

Method Detail

toEqualityKindDruidFilter

@Nullable
private static DruidJsonFilter toEqualityKindDruidFilter(RexNode rexNode,
                                                                   RelDataType rowType,
                                                                   DruidQuery druidQuery)

Parameters:

rexNode - rexNode to translate to Druid Json Filter

rowType - rowType associated to rexNode

druidQuery - druid query

Returns:

Druid Json filter or null if it can not translate

toBoundDruidFilter

@Nullable
private static DruidJsonFilter toBoundDruidFilter(RexNode rexNode,
                                                            RelDataType rowType,
                                                            DruidQuery druidQuery)

Parameters:

rexNode - rexNode to translate

rowType - row type associated to Filter

druidQuery - druid query

Returns:

valid Druid Json Bound Filter or null if it can not translate the rexNode.

toDruidLiteral

@Nullable
private static String toDruidLiteral(RexNode rexNode,
                                               RelDataType rowType,
                                               DruidQuery druidQuery)

Parameters:

rexNode - rexNode to translate to Druid literal equivalante

rowType - rowType associated to rexNode

druidQuery - druid Query

Returns:

non null string or null if it can not translate to valid Druid equivalent

toIsNullKindDruidFilter

@Nullable
private static DruidJsonFilter toIsNullKindDruidFilter(RexNode rexNode,
                                                                 RelDataType rowType,
                                                                 DruidQuery druidQuery)

toInKindDruidFilter

@Nullable
private static DruidJsonFilter toInKindDruidFilter(RexNode e,
                                                             RelDataType rowType,
                                                             DruidQuery druidQuery)

toNotDruidFilter

@Nullable
protected static DruidJsonFilter toNotDruidFilter(DruidJsonFilter druidJsonFilter)

toBetweenDruidFilter

@Nullable
private static DruidJsonFilter toBetweenDruidFilter(RexNode rexNode,
                                                              RelDataType rowType,
                                                              DruidQuery query)

toSimpleDruidFilter

@Nullable
private static DruidJsonFilter toSimpleDruidFilter(RexNode e,
                                                             RelDataType rowType,
                                                             DruidQuery druidQuery)

toDruidFilters

@Nullable
static DruidJsonFilter toDruidFilters(RexNode rexNode,
                                                RelDataType rowType,
                                                DruidQuery druidQuery)

Parameters:

rexNode - rexNode to translate to Druid Filter

rowType - rowType of filter input

druidQuery - Druid query

Returns:

Druid Json Filters or null when can not translate to valid Druid Filters.

toDruidExpressionFilter

@Nullable
private static DruidJsonFilter toDruidExpressionFilter(RexNode rexNode,
                                                                 RelDataType rowType,
                                                                 DruidQuery query)

getSelectorFilter

public static DruidJsonFilter getSelectorFilter(String column,
                                                String value,
                                                ExtractionFunction extractionFunction)