/// <summary>
/// Initializes a new RequestDescription for a query specified by the
/// request Uri.
/// </summary>
/// <param name="targetKind">The kind of target for the request.</param>
/// <param name="targetSource">The source for this target.</param>
/// <param name="resultUri">URI to the results requested (with no query component).</param>
internal RequestDescription(RequestTargetKind targetKind, RequestTargetSource targetSource, Uri resultUri)
{
WebUtil.DebugEnumIsDefined(targetKind);
Debug.Assert(resultUri != null, "resultUri != null");
Debug.Assert(resultUri.IsAbsoluteUri, "resultUri.IsAbsoluteUri(" + resultUri + ")");
SegmentInfo segment = new SegmentInfo();
segment.TargetKind = targetKind;
segment.TargetSource = targetSource;
segment.SingleResult = true;
this.segmentInfos = new SegmentInfo[] { segment };
this.resultUri = resultUri;
this.requireMinimumVersion = new Version(1, 0);
this.responseVersion = DataServiceDefaultResponseVersion;
this.maxFeatureVersion = new Version(1, 0);
}
/// <summary>In DEBUG builds, ensures that invariants for the class hold.</summary>
internal void AssertValid()
{
WebUtil.DebugEnumIsDefined(this.TargetKind);
WebUtil.DebugEnumIsDefined(this.TargetSource);
Debug.Assert(this.TargetKind != RequestTargetKind.Nothing, "targetKind != RequestTargetKind.Nothing");
Debug.Assert(
this.TargetContainer == null || this.TargetSource != RequestTargetSource.None,
"'None' targets should not have a resource set.");
Debug.Assert(
this.TargetKind != RequestTargetKind.Resource ||
this.TargetContainer != null ||
this.TargetKind == RequestTargetKind.OpenProperty ||
this.TargetSource == RequestTargetSource.ServiceOperation,
"All resource targets (except for some service operations and open properties) should have a container.");
Debug.Assert(
this.TargetContainer == null || this.TargetContainer.ResourceType.IsAssignableFrom(this.TargetResourceType),
"If targetContainer is assigned, it should be equal to (or assignable to) the segment's element type.");
Debug.Assert(
!String.IsNullOrEmpty(this.Identifier) || RequestTargetSource.None == this.TargetSource || RequestTargetKind.VoidServiceOperation == this.TargetKind,
"identifier must not be empty or null except for none or void service operation");
}