Class DefinedVariablesOnlyPathExpressionEvaluator

An implementation of IEvaluatesExpression which evaluates TALES 'var' expressions.

Inheritance
System.Object
DefinedVariablesOnlyPathExpressionEvaluator
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: ZptSharp.Expressions.PathExpressions
Assembly: ZptSharp.dll
Syntax
public class DefinedVariablesOnlyPathExpressionEvaluator : IEvaluatesExpression
Remarks

This class is little more than an adapter for IEvaluatesPathExpressionRequest. This is because there are a number of different 'path expression' variants which have almost-but-not-quite identical logic. This class builds a PathExpressionEvaluationRequest and passes it on down the stack.

Constructors

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DefinedVariablesOnlyPathExpressionEvaluator(IEvaluatesPathExpressionRequest)

Initializes a new instance of the DefinedVariablesOnlyPathExpressionEvaluator class.

Declaration
public DefinedVariablesOnlyPathExpressionEvaluator(IEvaluatesPathExpressionRequest requestEvaluator)
Parameters
Type Name Description
IEvaluatesPathExpressionRequest requestEvaluator

Request evaluator.

Methods

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EvaluateExpressionAsync(String, ExpressionContext, CancellationToken)

Evaluates the expression asynchronously and returns the result.

Declaration
public Task<object> EvaluateExpressionAsync(string expression, ExpressionContext context, CancellationToken cancellationToken = default(CancellationToken))
Parameters
Type Name Description
System.String expression

The expression string.
ExpressionContext context

The expression context.
System.Threading.CancellationToken cancellationToken

An optional cancellation token.
Returns
Type Description
System.Threading.Tasks.Task<System.Object>

The expression result.

Implements

Extension Methods