[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]
Superclass for filter nodes in a filter expression tree. Allow
validation against stream event types and evaluation of events against filter tree.
The following tables list the members exposed by the ExprNode type.
Public Methods
Name | Description | |
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![]() | 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.
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![]() | AddChildNode |
Adds a child node.
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![]() ![]() | DeepEquals | Compare two expression nodes and their children in exact child-node sequence,
returning true if the 2 expression nodes trees are equals, or false if they are not equals.
Recursive call since it uses this method to compare child nodes in the same exact sequence.
Nodes are compared using the EqualsNode method.
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![]() | DumpDebug | Recursively print out all nodes. |
![]() | 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.
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![]() | Evaluate |
Evaluate event tuple and return result.
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![]() | 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.
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![]() | ToString | (Inherited from Object.) |
![]() | Validate |
Validate node.
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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.) |
Protected Constructors
Name | Description | |
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![]() | ExprNodeNew |
Constructor creates a list of child nodes.
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Public Properties
Name | Description | |
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![]() | ChildNodes | Returns list of child nodes. |
![]() | ExpressionString | Returns the expression node rendered as a string. |
![]() | ReturnType |
Returns the type that the node's evaluate method returns an instance of.
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