Interface IExpressionNode
- All Superinterfaces:
Serializable
- All Known Implementing Classes:
AllExpression
,ArithmeticExpression
,ConditionExpression
,ConstExpression
,ConversionExpression
,DimensionExpression
,EachExpression
,ExistsExpression
,FieldVariableExpression
,FunctionExpression
,InstanceOfExpression
,InversionExpression
,IsActiveExpression
,ListArithmeticExpression
,ListConditionExpression
,ListExpression
,LogicalExpression
,NamedVariableExpression
,NotExpression
,RootExpression
,SelectExpression
,TemplateExpression
,TypeOfExpression
,UnknownExpression
,VariableExpression
The expression node interface defines the methods that all nodes from the optimizer should implement.
- Since:
- 6.4
- Author:
- O. Kerpershoek
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Method Summary
Modifier and TypeMethodDescriptionevaluate
(IValueEnvironment environment) This method evaluates the node using the environment passed as argument and returns the result as a value or null if the result is unknown.
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Method Details
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evaluate
This method evaluates the node using the environment passed as argument and returns the result as a value or null if the result is unknown.- Parameters:
environment
- The environment that should be used when evaluating the node.- Returns:
- The result of the evaluation, or null if the result is unknown.
- Throws:
ExpressionException
- This exception is thrown when the node could not be evaluated due to an unexpected error.
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