ExpressionEngine Class

µStrata MathDaemon™ Computation Library

Core class intended to store all expressions and their compiled versions

Inheritance Hierarchy

System Object
uStrata.MathDaemon.Computation ExpressionEngine

Namespace: uStrata.MathDaemon.Computation
Assembly: uStrata.MathDaemon.Computation (in uStrata.MathDaemon.Computation.dll) Version: 1.1.5779.28281

Syntax

C++

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public class ExpressionEngine

public class ExpressionEngine

Public Class ExpressionEngine

Public Class ExpressionEngine

type ExpressionEngine =  class end

type ExpressionEngine =  class end

The ExpressionEngine type exposes the following members.

Constructors

	Name	Description
	ExpressionEngine	Constructor. Creates an instance of ExpressionEngine class

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Methods

	Name	Description
	CheckSyntax	Performs parsing (syntax check) for all expressions (including ternary) stored in the engine. Provides a detailed information about error in case of failure
	CheckSyntax(String)	Performs parsing (syntax check) for passed expression. Provides a detailed information about error in case of failure
	Clean	Removes all expressions and parameters from its collections and removes compiled code from the memory.
	CleanExpressions	Removes compiled code from the memory. Parameters and expressions are not removed and becomes available for editing.
	Compile	Compiles all defined expressions, if parsing passed
	Execute(String)	Performs a calculation of previously compiled formula by its name
	Execute(String, Dictionary String, Double )	Performs a calculation of previously compiled formula by its name using passed values.
	ExecuteAll	Performs a calculation for all stored formulas
	ExecuteAll(Dictionary String, Double )	Performs a calculation for all stored formulas using passed values.
	ExecuteExpressions	Performs a calculation for all stored expressions (ternary expressions are not included)
	ExecuteExpressions(Dictionary String, Double )	Performs a calculation for all stored expressions (ternary expressions are not included) using passed values.
	ExecuteTernaryExpressions	Performs a calculation for all stored ternary expressions
	ExecuteTernaryExpressions(Dictionary String, Double )	Performs a calculation for all stored ternary expressions using passed values.
	ExpressionAdd	Add a single expression to the storage. Only 3 expressions should be added for free version. Passed formula is not checked for correct syntax.
	ExpressionEdit	Edit a formula of the expression Passed formula is not checked for correct syntax.
	ExpressionEditName	Renames expression. All dependent expressions will be updated.
	ExpressionExists	Check if passed expression name stored within the collection
	ExpressionRemove	Removes passed expression from the collection. If the expression is used within any another expression, error will be raised on parsing only.
	FindCircularReferences	Find all expressions and ternary expressions that points to themselves directly or via intermediate expression.
	GetExpression	Retrieve an expression by its name
	GetParameterValue	Retrieve currently stored parameter value by its name
	GetTernaryExpression	Retrieve an ternary expression structure by its name
	ParameterAdd	Add a single parameter to the storage. Only 3 parameters should be added for free version.
	ParameterEdit	Renames parameter. All dependent expressions will be updated.
	ParameterExists	Check if passed parameter name stored within the collection
	ParameterRemove	Removes passed parameter from the collection. If the parameter is used within any expression, error will be raised on parsing only.
	SetParameterValue(Dictionary String, Double )	Assign new values to all parameters passed in the list
	SetParameterValue(String, Double)	Assigned new value to passed parameter name
	TernaryExpressionAdd	Add a single ternary expression to the storage. Only 3 ternary expressions should be added for free version. Passed formula is not checked for correct syntax. Ternary expression will be composed in the followed way: ifLeft compareType ifRight THEN thenExpression ELSE elseExpression Or, in ternary way ifLeft compareType ifRight ? thenExpression : elseExpression
	TernaryExpressionEdit	Edit a formula of the ternary expression Passed formula is not checked for correct syntax. Ternary expression will be composed in the followed way: ifLeft compareType ifRight THEN thenExpression ELSE elseExpression Or, in ternary way ifLeft compareType ifRight ? thenExpression : elseExpression
	TernaryExpressionEditName	Renames ternary expression. All dependent expressions will be updated.
	TernaryExpressionExists	Check if passed ternary expression name stored within the collection
	TernaryExpressionRemove	Removes passed ternary expression from the collection. If the expression is used within any another expression, error will be raised on parsing only.

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Properties

	Name	Description
	AngleMode	AngleMode value to be used for all trigonometrical calculations
	Description	Optional description for the instance
	Estimate	Estimate value to be used for comparison evaluations such as Equal, NotEqual, GreaterEqual and LessEqual Field Value Type: double
	FormulaCount	Number of expressions stored within the instance. Ternary expressions are not included.
	FormulaList	Collection of expressions stored within the instance. Ternary expressions are not included.
	InstanceId	Unique object identifier generated once when the object is created. Used internally to support an instance tree belongs to several users. May be set via object initializer only.
	Name	Optional name for the instance
	ParameterCount	Number of parameters stored within the instance.
	ParameterList	Collection of parameters defined for the instance.
	RegisteredFunctionCount	Number of built-in functions supported by the engine
	RegisteredFunctionList	Collection of standard built-in mathematical functions supported by the engine
	SessionId	Unique identifier describes the session that current instance belongs Used internally to support an instance tree belongs to several users and their sessions. May be set via object initializer only.
	StandardConstantCount	Number of standard constants supported by the engine
	StandardConstantList	Collection of standard constants supported by the engine
	StopReason	The property stored last error occurred while object instance is used
	TernaryExpressionCount	Number of ternary expressions stored within the instance
	TernaryExpressionList	Collection of ternary expressions stored within the instance

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Field Value