[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]
Represents the count(...) and count(*) and count(distinct ...) aggregate function is an expression tree.
The following tables list the members exposed by the ExprCountNode 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 | Serves as a hash function for a particular type. GetHashCode() is suitable for use in hashing algorithms and data structures like a hash table. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (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 | Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ValidateSingleNumericChild | For use by implementing classes, validates the aggregation node expecting
a single numeric-type child node.
(Inherited from ExprAggregateNode.) |