Package org.apache.calcite.adapter.druid

package org.apache.calcite.adapter.druid

Query provider based on a Druid database.

Class	Description
BinaryOperatorConversion	Binary operator conversion utility class; used to convert expressions like exp1 Operator exp2.
CeilOperatorConversion	DruidSqlOperatorConverter implementation that handles Ceil operations conversions.
ComplexMetric	Stores information about available complex metrics in the Druid Adapter.
DefaultDimensionSpec	Default implementation of DimensionSpec.
DimensionSpec	Interface for Druid DimensionSpec.
DirectOperatorConversion	Direct operator conversion for expression like Function(exp_1,...exp_n)
DruidConnection	Connection to Druid.
DruidDateTimeUtils	Utilities for generating intervals from RexNode.
DruidExpressions	Expression utility class to transform Calcite expressions to Druid expressions when possible.
DruidJson	Object that knows how to write itself to a JsonGenerator.
DruidQuery	Relational expression representing a scan of a Druid data set.
DruidQuery.JsonPostAggregation	Post-aggregator abstract writer.
DruidQuery.QuerySpec	Druid query specification.
DruidRules	Rules and relational operators for DruidQuery.
DruidRules.DruidAggregateProjectRule	Rule to push an Aggregate and Project into a DruidQuery.
DruidRules.DruidAggregateProjectRule.DruidAggregateProjectRuleConfig	Rule configuration.
DruidRules.DruidAggregateRule	Rule to push an Aggregate into a DruidQuery.
DruidRules.DruidAggregateRule.DruidAggregateRuleConfig	Rule configuration.
DruidRules.DruidFilterRule	Rule to push a Filter into a DruidQuery.
DruidRules.DruidFilterRule.DruidFilterRuleConfig	Rule configuration.
DruidRules.DruidHavingFilterRule	Rule to Push a Having Filter into a DruidQuery.
DruidRules.DruidHavingFilterRule.DruidHavingFilterRuleConfig	Rule configuration.
DruidRules.DruidPostAggregationProjectRule	Rule to push a Project into a DruidQuery as a Post aggregator.
DruidRules.DruidPostAggregationProjectRule.DruidPostAggregationProjectRuleConfig	Rule configuration.
DruidRules.DruidProjectRule	Rule to push a Project into a DruidQuery.
DruidRules.DruidProjectRule.DruidProjectRuleConfig	Rule configuration.
DruidRules.DruidSortRule	Rule to push a Sort into a DruidQuery.
DruidRules.DruidSortRule.DruidSortRuleConfig	Rule configuration.
DruidSchema	Schema mapped onto a Druid instance.
DruidSchemaFactory	Schema factory that creates Druid schemas.
DruidSqlCastConverter	Druid cast converter operator; used to translates Calcite casts to Druid expression casts.
DruidSqlOperatorConverter	Defines how to convert a RexNode with a given Calcite SQL operator to a Druid expression.
DruidTable	Table mapped onto a Druid table.
DruidTableFactory	Implementation of TableFactory for Druid.
DruidType	Druid type.
ExtractionDimensionSpec	Implementation of extraction function DimensionSpec.
ExtractionFunction	Interface for Druid extraction functions.
ExtractOperatorConversion	Time extract operator conversion for expressions like EXTRACT(timeUnit FROM arg).
FloorOperatorConversion	DruidSqlOperatorConverter implementation that handles Floor operations conversions.
Granularities	Factory methods and helpers for Granularity.
Granularity	A strategy by which Druid rolls up rows into sub-totals based on their timestamp values.
Granularity.Type	Type of supported periods for granularity.
NaryOperatorConverter	Converts Calcite n-ary operators to Druid expressions, for example arg1 Op arg2 Op arg3.
QueryType	Type of Druid query.
SubstringOperatorConversion	Converts Calcite SUBSTRING call to Druid Expression when possible.
TimeExtractionFunction	Implementation of Druid time format extraction function.
UnaryPrefixOperatorConversion	Unary prefix Operator conversion class; used to convert expressions like Unary NOT and Minus.
UnarySuffixOperatorConversion	Unary suffix operator conversion; used to convert function likes expression Unary_Operator.
VirtualColumn	Druid Json Expression based Virtual Column.
VirtualColumn.Builder	Virtual Column builder.