[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]
Represents the min/max(distinct? ...) aggregate function is an expression tree.
The following tables list the members exposed by the ExprMinMaxAggrNode type.
Public Methods
Name | Description | |
---|---|---|
![]() | Accept |
Accept the visitor. The visitor will first visit the parent then visit all child nodes, then their child nodes.
The visitor can decide to skip child nodes by returning false in isVisit.
(Inherited from ExprNode.) |
![]() | AddChildNode |
Adds a child node.
(Inherited from ExprNode.) |
![]() | DumpDebug | Recursively print out all nodes. (Inherited from ExprNode.) |
![]() | Equals | (Inherited from Object.) |
![]() | EqualsNode |
Return true if a expression node semantically equals the current node, or false if not.
Concrete implementations should compare the type and any additional information
that impact the evaluation of a node.
(Inherited from ExprAggregateNode.) |
![]() | EqualsNodeAggregate |
Return true if a expression aggregate node semantically equals the current node, or false if not.
For use by the EqualsNode implementation which compares the distinct flag.
(Overrides .EqualsNodeAggregate(ExprAggregateNode).) |
![]() | Evaluate |
Evaluates the specified events.
(Inherited from ExprAggregateNode.) |
![]() | GetHashCode | (Inherited from Object.) |
![]() | GetType | (Inherited from Object.) |
![]() | GetValidatedSubtree |
Validates the expression node subtree that has this
node as root. Some of the nodes of the tree, including the
root, might be replaced in the process.
(Inherited from ExprNode.) |
![]() | SetAggregationResultFuture | Assigns to the node the future which can be queried for the current aggregation state at evaluation time. (Inherited from ExprAggregateNode.) |
![]() | ToString | (Inherited from Object.) |
![]() | Validate |
Validate node.
(Overrides .Validate(StreamTypeService, AutoImportService).) |
Protected Methods
Name | Description | |
---|---|---|
![]() | Finalize | (Inherited from Object.) |
![]() | MemberwiseClone | (Inherited from Object.) |
![]() | ValidateSingleNumericChild | For use by implementing classes, validates the aggregation node expecting
a single numeric-type child node.
(Inherited from ExprAggregateNode.) |
Protected Fields
Name | Description | |
---|---|---|
![]() | isDistinct |
Indicator for whether the aggregation is distinct - i.e. only unique
values are considered.
(Inherited from ExprAggregateNode.) |
Public Constructors
Name | Description | |
---|---|---|
![]() | ExprMinMaxAggrNodeNew |
Ctor.
|
Public Properties
Name | Description | |
---|---|---|
![]() | AggregationFunction |
Returns the aggregation state prototype for use in grouping aggregation states per group-by keys.
(Overrides .AggregationFunction.) |
![]() | ChildNodes | Returns list of child nodes. (Inherited from ExprNode.) |
![]() | ExpressionString | Renders the aggregation function expression. (Inherited from ExprAggregateNode.) |
![]() | IsDistinct |
Returns true if the aggregation node is only aggregatig distinct values, or false if
aggregating all values.
(Inherited from ExprAggregateNode.) |
![]() | PrototypeAggregator | Returns the aggregation state prototype for use in grouping aggregation states per group-by keys. (Inherited from ExprAggregateNode.) |
![]() | ReturnType |
Returns the type that the node's evaluate method returns an instance of.
(Overrides .ReturnType.) |
Protected Properties
Name | Description | |
---|---|---|
![]() | AggregationFunctionName |
Returns the aggregation function name for representation in a generate expression string.
(Overrides .AggregationFunctionName.) |