/// <summary>
/// Initializes a new instance of the <see cref="DSPIQALinqQueryProvider"/> class.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="underlyingQueryProvider">The underlying query provider.</param>
/// <param name="resourceSet">The resource set.</param>
public DSPIQALinqQueryProvider(IContext context, IQueryProvider underlyingQueryProvider, ResourceSet resourceSet)
{
this.underlyingQueryProvider = underlyingQueryProvider;
this.context = context;
this.annotations = new ExpressionResourceAnnotations();
this.resourceSet = resourceSet;
}
/// <summary>
/// Prevents a default instance of the <see cref="DSPIQALinqQueryProvider"/> class from being created.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="underlyingQueryProvider">The underlying query provider.</param>
private DSPIQALinqQueryProvider(IContext context, IQueryProvider underlyingQueryProvider)
{
Debug.Assert(context != null, "context != null");
Debug.Assert(underlyingQueryProvider != null, "underlyingQueryProvider != null");
this.context = context;
this.underlyingQueryProvider = underlyingQueryProvider;
this.annotations = new ExpressionResourceAnnotations();
}
/// <summary>
/// Converts the specified expression.
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="annotations">The annotations.</param>
/// <param name="metadataMapping">The metadata mapping.</param>
/// <returns></returns>
public static ExpressionConversionResult Convert(Expression expression, ExpressionResourceAnnotations annotations, DSPMetadata metadataMapping)
{
Debug.Assert(annotations != null, "annotations != null");
Debug.Assert(metadataMapping != null, "metadataMapping != null");
expression = ResourceAnnotationVisitor.Convert(expression, annotations);
ExpressionConversionResult result = ConvertInnerExpression(expression, annotations, metadataMapping);
expression = ExpressionSimplifier.Simplify(result.Expression);
result.SetResultExpression(expression);
return(result);
}
/// <summary>
/// Converts the inner expression.
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="annotations">The annotations.</param>
/// <param name="contextMapping">The context mapping.</param>
/// <returns></returns>
private static ExpressionConversionResult ConvertInnerExpression(
Expression expression,
ExpressionResourceAnnotations annotations,
DSPMetadata contextMapping)
{
Debug.Assert(expression != null, "expression != null");
Debug.Assert(annotations != null, "annotations != null");
Debug.Assert(contextMapping != null, "contextMapping != null");
ExpressionConversionResult result = new ExpressionConversionResult(expression);
FilterConverter filterConverter = new FilterConverter(annotations, contextMapping);
result = filterConverter.Convert(result);
return(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="ExpressionConverter"/> class.
/// </summary>
/// <param name="annotations">The annotations.</param>
/// <param name="metadataMapping">The metadata mapping.</param>
public ExpressionConverter(ExpressionResourceAnnotations annotations, DSPMetadata metadataMapping)
: base(annotations)
{
Debug.Assert(metadataMapping != null, "metadataMapping != null");
this.metadataMapping = metadataMapping;
}
/// <summary>Constructor.</summary>
/// <param name="annotations">Annotations to use and modify.</param>
public ResourceAnnotationPreservingExpressionVisitor(ExpressionResourceAnnotations annotations)
{
Debug.Assert(annotations != null, "annotations != null");
this.annotations = annotations;
}
/// <summary>Converts the specified expression and annotates it.</summary>
/// <param name="expr">The expression to process.</param>
/// <param name="annotations">Annotations object to store the annotations in.</param>
/// <returns>The converted expression which will contain only CLR way of accessing properties.</returns>
internal static Expression Convert(Expression expr, ExpressionResourceAnnotations annotations)
{
ResourceAnnotationVisitor visitor = new ResourceAnnotationVisitor(annotations);
return(visitor.Visit(expr));
}
/// <summary>Constructor.</summary>
/// <param name="annotations">Annotations to use and modify.</param>
private ResourceAnnotationVisitor(ExpressionResourceAnnotations annotations)
: base(annotations)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="FilterConverter"/> class.
/// </summary>
/// <param name="annotations">The annotations.</param>
/// <param name="contextMapping">The context mapping.</param>
public FilterConverter(ExpressionResourceAnnotations annotations, DSPMetadata contextMapping)
: base(annotations, contextMapping)
{
}
