public void ParseLabeledElementReferenceExpressionWorksAsExpected()
{
string json = @" { ""$LabeledElementReference"": ""self.CustomerFirstName"" }";
CsdlExpressionBase expressionBase = ParseExpression(json);
Assert.NotNull(expressionBase);
CsdlLabeledExpressionReferenceExpression labeledRefExp = Assert.IsType <CsdlLabeledExpressionReferenceExpression>(expressionBase);
Assert.Equal("self.CustomerFirstName", labeledRefExp.Label);
}
/// <summary>
/// Parse the Labeled Element Reference expression using <see cref="JsonElement"/>.
/// </summary>
/// <param name="element">The input JSON element.</param>
/// <param name="context">The parser context.</param>
/// <param name="labeledReferenceExp">The built Labeled Element Reference expression.</param>
/// <returns>true/false</returns>
private static bool TryParseLabeledElementReferenceExpression(JsonElement element, JsonParserContext context, out CsdlLabeledExpressionReferenceExpression labeledReferenceExp)
{
Debug.Assert(context != null);
labeledReferenceExp = null;
// Labeled element reference expressions are represented as an object with a member $LabeledElementReference whose value is a string containing an qualified name.
JsonElement propertyValue;
if (element.ValueKind != JsonValueKind.Object || !element.TryGetProperty("$LabeledElementReference", out propertyValue))
{
return(false);
}
string label = propertyValue.ProcessProperty("$LabeledElementReference", context, (e, c) => e.ParseAsString(c));
labeledReferenceExp = new CsdlLabeledExpressionReferenceExpression(label, context.Location());
return(true);
}
public CsdlSemanticsLabeledExpressionReferenceExpression(CsdlLabeledExpressionReferenceExpression expression, IEdmEntityType bindingContext, CsdlSemanticsSchema schema)
: base(schema, expression)
{
this.expression = expression;
this.bindingContext = bindingContext;
}
