MeasurementExpressionParser Class

Represents a template based token substitution parser that supports binary and advanced expressions. with the Variables geared towards measurements.

Definition

Namespace: Gemstone.Timeseries.Model
Assembly: Gemstone.Timeseries (in Gemstone.Timeseries.dll) Version: 1.0.164 -- Release Build+a92a9bf42cb46f572890ee63295d6658a513d9b3

C#View Source Request Example

public class MeasurementExpressionParser

VBView Source Request Example

Public Class MeasurementExpressionParser

C++View Source Request Example

public ref class MeasurementExpressionParser

JavaScriptView Source Request Example

Gemstone.Timeseries.Model.MeasurementExpressionParser = function();

Type.createClass(
	'Gemstone.Timeseries.Model.MeasurementExpressionParser');

Inheritance: Object MeasurementExpressionParser

Remarks

As an example, this parser can use a templated expression of the form:

C#

{CompanyAcronym}_{DeviceAcronym}[?{SignalType.Source}=Phasor[-{SignalType.Suffix}{SignalIndex}]]:{Signal.Acronym}

then replace the tokens with actual values and properly evaluate the expressions. Example results could look like: GPA_SHELBY-PA1:IPHA and GPA_SHELBY:FREQ

Parser also supports more complex C# style expressions using the "eval{}" function, e.g.:

C#

eval{'{CompanyAcronym}'.Substring(0,3)}_{DeviceAcronym}eval{'[?{SignalType.Source}=Phasor[-{SignalType.Suffix}]]'.Length}

Constructors

MeasurementExpressionParser(String)	Creates a new MeasurementExpressionParser.
MeasurementExpressionParser(TemplatedExpressionParser)	Creates a new MeasurementExpressionParser.

Properties

Substitutions

Additional variables available in this instance.

Methods

Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
Execute	Create a new expression using the provided expression.
Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object)
GetHashCode	Serves as the default hash function. (Inherited from Object)
GetType	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object)
ProvideMeasurementSubstitutions	This Provides the substitutions that would be used for the provided parameters.
ToString	Returns a string that represents the current object. (Inherited from Object)