org.apache.calcite.adapter.enumerable (Apache Calcite API)

Query optimizer rules for Java calling convention.

Interface Summary
Interface	Description
AggAddContext	Information for a call to `AggImplementor.implementAdd(AggContext, AggAddContext)`.
AggContext	Information on the aggregate calculation context.
AggImplementor	Implements an aggregate function by generating expressions to initialize, add to, and get a result from, an accumulator.
AggregateLambdaFactory<TSource,TOrigAccumulate,TAccumulate,TResult,TKey>	Generates lambda functions used in `EnumerableAggregate`.
AggResetContext	Information for a call to `AggImplementor.implementReset(AggContext, AggResetContext)`.
AggResultContext	Information for a call to `AggImplementor.implementResult(AggContext, AggResultContext)`
CallImplementor	Implements a call via given translator.
EnumerableRel	A relational expression of one of the `EnumerableConvention` calling conventions.
NestedBlockBuilder	Allows to build nested code blocks with tracking of current context and the nullability of particular `RexNode` expressions.
NotNullImplementor	Simplified version of `CallImplementor` that does not know about null semantics.
PhysType	Physical type of a row.
RexToLixTranslator.InputGetter	Translates a field of an input to an expression.
WinAggAddContext	Information for a call to `AggImplementor.implementAdd(AggContext, AggAddContext)`.
WinAggContext	Marker interface to allow `AggImplementor` to tell if it is used in regular or windowed context.
WinAggFrameContext	Provides information on the current window.
WinAggFrameResultContext	Provides information on the current window when computing the result of the aggregation.
WinAggImplementor	Implements a windowed aggregate function by generating expressions to initialize, add to, and get a result from, an accumulator.
WinAggResetContext	Information for a call to `AggImplementor.implementReset(AggContext, AggResetContext)`.
WinAggResultContext	Information for a call to `AggImplementor.implementResult(AggContext, AggResultContext)`.

Class Summary
Class	Description
AggImpState	Represents internal state when implementing aggregate functions.
EnumerableAggregate	Implementation of `Aggregate` in `enumerable calling convention`.
EnumerableAggregateRule	Rule to convert a `LogicalAggregate` to an `EnumerableAggregate`.
EnumerableBindable	Relational expression that converts an enumerable input to interpretable calling convention.
EnumerableBindable.EnumerableToBindableConverterRule	Rule that converts any enumerable relational expression to bindable.
EnumerableCalc	Implementation of `Calc` in `enumerable calling convention`.
EnumerableCalcRule	Rule to convert a `LogicalCalc` to an `EnumerableCalc`.
EnumerableCollect	Implementation of `Collect` in `enumerable calling convention`.
EnumerableCollectRule	Rule to convert an `Collect` to an `EnumerableCollect`.
EnumerableCorrelate	Implementation of `Correlate` in `enumerable calling convention`.
EnumerableCorrelateRule	Implementation of nested loops over enumerable inputs.
EnumerableFilter	Implementation of `Filter` in `enumerable calling convention`.
EnumerableFilterRule	Rule to convert a `LogicalFilter` to an `EnumerableFilter`.
EnumerableFilterToCalcRule	Variant of `FilterToCalcRule` for `enumerable calling convention`.
EnumerableInterpretable	Relational expression that converts an enumerable input to interpretable calling convention.
EnumerableInterpretable.EnumerableNode	Interpreter node that reads from an `Enumerable`.
EnumerableInterpreter	Relational expression that executes its children using an interpreter.
EnumerableInterpreterRule	Planner rule that converts `BindableRel` to `EnumerableRel` by creating an `EnumerableInterpreter`.
EnumerableIntersect	Implementation of `Intersect` in `enumerable calling convention`.
EnumerableIntersectRule	Rule to convert a `LogicalIntersect` to an `EnumerableIntersect`.
EnumerableJoin	Implementation of `Join` in `enumerable calling convention`.
EnumerableJoinRule	Planner rule that converts a `LogicalJoin` relational expression `enumerable calling convention`.
EnumerableLimit	Relational expression that applies a limit and/or offset to its input.
EnumerableLimitRule	Rule to convert an `Sort` that has `offset` or `fetch` set to an `EnumerableLimit` on top of a "pure" `Sort` that has no offset or fetch.
EnumerableMergeJoin	Implementation of `Join` in `enumerable calling convention` using a merge algorithm.
EnumerableMergeJoinRule	Planner rule that converts a `LogicalJoin` relational expression `enumerable calling convention`.
EnumerableMinus	Implementation of `Minus` in `enumerable calling convention`.
EnumerableMinusRule	Rule to convert an `LogicalMinus` to an `EnumerableMinus`.
EnumerableProject	Implementation of `Project` in `enumerable calling convention`.
EnumerableProjectRule	Rule to convert a `LogicalProject` to an `EnumerableProject`.
EnumerableProjectToCalcRule	Variant of `ProjectToCalcRule` for `enumerable calling convention`.
EnumerableRel.Result	Result of implementing an enumerable relational expression by generating Java code.
EnumerableRelImplementor	Subclass of `RelImplementor` for relational operators of `EnumerableConvention` calling convention.
EnumerableRelImplementor.TypeFinder	Visitor that finds types in an `Expression` tree.
EnumerableRules	Rules and relational operators for the `enumerable calling convention`.
EnumerableSemiJoin	Implementation of `SemiJoin` in `enumerable calling convention`.
EnumerableSemiJoinRule	Planner rule that converts a `SemiJoin` relational expression `enumerable calling convention`.
EnumerableSort	Implementation of `Sort` in `enumerable calling convention`.
EnumerableSortRule	Rule to convert an `Sort` to an `EnumerableSort`.
EnumerableTableFunctionScan	Implementation of `TableFunctionScan` in `enumerable calling convention`.
EnumerableTableFunctionScanRule	Planner rule that converts a `LogicalTableFunctionScan` relational expression `enumerable calling convention`.
EnumerableTableModify	Implementation of `TableModify` in `enumerable calling convention`.
EnumerableTableModifyRule	Planner rule that converts a `LogicalTableModify` relational expression `enumerable calling convention`.
EnumerableTableScan	Implementation of `TableScan` in `enumerable calling convention`.
EnumerableTableScanRule	Planner rule that converts a `LogicalTableFunctionScan` relational expression `enumerable calling convention`.
EnumerableThetaJoin	Implementation of `Join` in `enumerable calling convention` that allows conditions that are not just `=` (equals).
EnumerableUncollect	Implementation of `Uncollect` in `enumerable calling convention`.
EnumerableUncollectRule	Rule to convert an `Uncollect` to an `EnumerableUncollect`.
EnumerableUnion	Implementation of `Union` in `enumerable calling convention`.
EnumerableUnionRule	Rule to convert an `LogicalUnion` to an `EnumerableUnion`.
EnumerableValues	Implementation of `Values` in `enumerable calling convention`.
EnumerableValuesRule	Planner rule that converts a `LogicalValues` relational expression `enumerable calling convention`.
EnumerableWindow	Implementation of `Window` in `enumerable calling convention`.
EnumerableWindow.WindowRelInputGetter	Implementation of `RexToLixTranslator.InputGetter` suitable for generating implementations of windowed aggregate functions.
EnumerableWindowRule	Rule to convert a `LogicalWindow` to an `EnumerableWindow`.
EnumUtils	Utilities for generating programs in the Enumerable (functional) style.
JavaRelImplementor	Abstract base class for implementations of `RelImplementor` that generate java code.
NestedBlockBuilderImpl	Allows to build nested code blocks with tracking of current context and the nullability of particular `RexNode` expressions.
OrderedAggregateLambdaFactory<TSource,TKey,TSortKey,TOrigAccumulate,TResult>	Generate aggregate lambdas that sorts the input source before calling each aggregate adder.
OrderedAggregateLambdaFactory.LazySource<TSource>	Cache the input sources.
PhysTypeImpl	Implementation of `PhysType`.
ReflectiveCallNotNullImplementor	Implementation of `NotNullImplementor` that calls a given `Method`.
RexImpTable	Contains implementations of Rex operators as Java code.
RexImpTable.BinaryImplementor	Implementor for binary operators.
RexImpTable.CaseImplementor	Implementor for the SQL `CASE` operator.
RexImpTable.CastImplementor	Implementor for the SQL `CAST` operator.
RexImpTable.CastOptimizedImplementor	Implementor for the SQL `CAST` function that optimizes if, say, the argument is already of the desired type.
RexImpTable.CoalesceImplementor	Implementor for the SQL `COALESCE` operator.
RexImpTable.CollectImplementor	Implementor for the `COLLECT` aggregate function.
RexImpTable.CountImplementor	Implementor for the `COUNT` aggregate function.
RexImpTable.CountWinImplementor	Implementor for the `COUNT` windowed aggregate function.
RexImpTable.DatetimeArithmeticImplementor	Implementor for various datetime arithmetic.
RexImpTable.DenseRankImplementor	Implementor for the `DENSE_RANK` windowed aggregate function.
RexImpTable.ExtractImplementor	Implementor for the `EXTRACT(unit FROM datetime)` function.
RexImpTable.FirstLastValueImplementor	Implementor for the `FIRST_VALUE` and `LAST_VALUE` windowed aggregate functions.
RexImpTable.FirstValueImplementor	Implementor for the `FIRST_VALUE` windowed aggregate function.
RexImpTable.FloorImplementor	Implementor for the `FLOOR` and `CEIL` functions.
RexImpTable.FusionImplementor	Implementor for the `FUSION` aggregate function.
RexImpTable.GroupingImplementor	Implementor for the `GROUPING` aggregate function.
RexImpTable.IsXxxImplementor	Implements "IS XXX" operations such as "IS NULL" or "IS NOT TRUE".
RexImpTable.ItemImplementor	Implementor for the `ITEM` SQL operator.
RexImpTable.JsonArrayAggImplementor	Implementor for the `JSON_ARRAYAGG` aggregate function.
RexImpTable.JsonObjectAggImplementor	Implementor for the `JSON_OBJECTAGG` aggregate function.
RexImpTable.LagImplementor	Implementor for the `LAG` windowed aggregate function.
RexImpTable.LastValueImplementor	Implementor for the `LAST_VALUE` windowed aggregate function.
RexImpTable.LeadImplementor	Implementor for the `LEAD` windowed aggregate function.
RexImpTable.LeadLagImplementor	Implementor for the `LEAD` and `LAG` windowed aggregate functions.
RexImpTable.MethodImplementor	Implementor for a function that generates calls to a given method.
RexImpTable.MethodNameImplementor	Implementor for SQL functions that generates calls to a given method name.
RexImpTable.MinMaxImplementor	Implementor for the `MIN` and `MAX` aggregate functions.
RexImpTable.NotImplementor	Implementor for the `NOT` operator.
RexImpTable.NthValueImplementor	Implementor for the `NTH_VALUE` windowed aggregate function.
RexImpTable.NtileImplementor	Implementor for the `NTILE` windowed aggregate function.
RexImpTable.RankImplementor	Implementor for the `RANK` windowed aggregate function.
RexImpTable.ReinterpretImplementor	Implementor for the `REINTERPRET` internal SQL operator.
RexImpTable.RowNumberImplementor	Implementor for the `ROW_NUMBER` windowed aggregate function.
RexImpTable.SingleValueImplementor	Implementor for the `SINGLE_VALUE` aggregate function.
RexImpTable.SumImplementor	Implementor for the `SUM` windowed aggregate function.
RexImpTable.SystemFunctionImplementor	Implementor for SQL system functions.
RexImpTable.TrimImplementor	Implementor for the `TRIM` function.
RexImpTable.UnaryImplementor	Implementor for unary operators.
RexImpTable.UserDefinedAggReflectiveImplementor	Implementor for user-defined aggregate functions.
RexImpTable.ValueConstructorImplementor	Implementor for a value-constructor.
RexToLixTranslator	Translates `REX expressions` to `linq4j expressions`.
RexToLixTranslator.InputGetterImpl	Implementation of `RexToLixTranslator.InputGetter` that calls `PhysType.fieldReference(org.apache.calcite.linq4j.tree.Expression, int)`.
SequencedAdderAggregateLambdaFactory<TSource,TAccumulate,TResult,TKey>	Implementation of `AggregateLambdaFactory` that applies a sequence of accumulator adders to input source.
SourceSorter<TAccumulate,TSource,TSortKey>	Helper that combines the sorting process and accumulating process against the aggregate execution, used with `OrderedAggregateLambdaFactory`.
StrictAggImplementor	The base implementation of strict aggregate function.
StrictWinAggImplementor	The base implementation of strict window aggregate function.

Enum Summary
Enum	Description
EnumerableConvention	Family of calling conventions that return results as an `Enumerable`.
EnumerableRel.Prefer	Preferred physical type.
JavaRowFormat	How a row is represented as a Java value.
NullPolicy	Describes when a function/operator will return null.
RexImpTable.NullAs	Strategy what an operator should return if one of its arguments is null.
WinAggImplementor.SeekType	Allows to access rows in window partition relative to first/last and current row.

Exception Summary
Exception	Description
RexToLixTranslator.AlwaysNull	Thrown in the unusual (but not erroneous) situation where the expression we are translating is the null literal but we have already checked that it is not null.

Package org.apache.calcite.adapter.enumerable