private void FoundNextLinkForCollection(IEnumerable collection, Uri link, ProjectionPlan plan)
{
if ((collection != null) && !base.nextLinkTable.ContainsKey(collection))
{
DataServiceQueryContinuation continuation = DataServiceQueryContinuation.Create(link, plan);
base.nextLinkTable.Add(collection, continuation);
Util.SetNextLinkForCollection(collection, continuation);
}
}
/// <summary>Records the fact that a rel='next' link was found for the specified <paramref name="collection"/>.</summary>
/// <param name="collection">Collection to add link to.</param>
/// <param name="link">Link (possibly null).</param>
/// <param name="plan">Projection plan for the collection (null allowed only if link is null).</param>
internal void FoundNextLinkForCollection(IEnumerable collection, Uri link, ProjectionPlan plan)
{
Debug.Assert(plan != null || link == null, "plan != null || link == null");
if (collection != null && !this.nextLinkTable.ContainsKey(collection))
{
DataServiceQueryContinuation continuation = DataServiceQueryContinuation.Create(link, plan);
this.nextLinkTable.Add(collection, continuation);
Util.SetNextLinkForCollection(collection, continuation);
}
}
public void Continuation_Creates_Incorrect_DataServiceVersion()
{
// Regression test for:Client always sends DSV=2.0 when following a continuation token
ProjectionPlan plan = new ProjectionPlan()
{
LastSegmentType = typeof(int),
ProjectedType = typeof(int)
};
var continuationToken = DataServiceQueryContinuation.Create(new Uri("http://localhost/Set?$skiptoken='Me'"), plan);
QueryComponents queryComponents = continuationToken.CreateQueryComponents();
Assert.AreSame(queryComponents.Version, Util.ODataVersionEmpty, "OData-Version of query components should be empty for Continuation token");
}
/// <summary>
/// Returns the next link URI for the collection key
/// </summary>
/// <param name="key">The collection for which the Uri is returned, or null, if the top level link is to be returned</param>
/// <returns>An Uri pointing to the next page for the collection</returns>
internal virtual DataServiceQueryContinuation GetContinuation(IEnumerable key)
{
Debug.Assert(this.materializer != null, "Materializer is null!");
DataServiceQueryContinuation result;
if (key == null)
{
if ((this.expectingPrimitiveValue && !this.moved) || (!this.expectingPrimitiveValue && !this.materializer.IsEndOfStream))
{
// expectingSingleValue && !moved : haven't started parsing single value (single value should not have next link anyway)
// !expectingSingleValue && !IsEndOfStream : collection type feed did not finish parsing yet
throw new InvalidOperationException(Strings.MaterializeFromAtom_TopLevelLinkNotAvailable);
}
// we have already moved to the end of stream
// are we singleton or just an entry?
if (this.expectingPrimitiveValue || this.materializer.CurrentFeed == null)
{
result = null;
}
else
{
// DEVNOTE(pqian): The next link uri should never be edited by the client, and therefore it must be absolute
result = DataServiceQueryContinuation.Create(
this.materializer.CurrentFeed.NextPageLink,
this.materializer.MaterializeEntryPlan);
}
}
else
{
if (!this.materializer.NextLinkTable.TryGetValue(key, out result))
{
// someone has asked for a collection that's "out of scope" or doesn't exist
throw new ArgumentException(Strings.MaterializeFromAtom_CollectionKeyNotPresentInLinkTable);
}
}
return(result);
}