private static Uri GetNestedNextPageLink(ODataSerializerContext writeContext, int pageSize, object obj)
{
Contract.Assert(writeContext.ExpandedResource != null);
IEdmNavigationSource sourceNavigationSource = writeContext.ExpandedResource.NavigationSource;
NavigationSourceLinkBuilderAnnotation linkBuilder = writeContext.Model.GetNavigationSourceLinkBuilder(sourceNavigationSource);
Uri navigationLink =
linkBuilder.BuildNavigationLink(writeContext.ExpandedResource, writeContext.NavigationProperty);
Uri nestedNextLink = GenerateQueryFromExpandedItem(writeContext, navigationLink);
SkipTokenHandler nextLinkGenerator = null;
if (writeContext.QueryContext != null)
{
nextLinkGenerator = writeContext.QueryContext.GetSkipTokenHandler();
}
if (nestedNextLink != null)
{
if (nextLinkGenerator != null)
{
return(nextLinkGenerator.GenerateNextPageLink(nestedNextLink, pageSize, obj, writeContext));
}
return(GetNextPageHelper.GetNextPageLink(nestedNextLink, pageSize));
}
return(null);
}
/// <summary>
/// Creates a link for the next page of results; To be used as the value of @odata.nextLink.
/// </summary>
/// <param name="request">The request on which to base the next page link.</param>
/// <param name="pageSize">The number of results allowed per page.</param>
/// <param name="instance">The instance based on which the skiptoken value is generated. </param>
/// <param name="objToSkipTokenValue">Function that extracts out the skiptoken value from the instance.</param>
/// <returns>A next page link.</returns>
public static Uri GetNextPageLink(this HttpRequestMessage request, int pageSize, object instance, Func <object, string> objToSkipTokenValue)
{
if (request == null || request.RequestUri == null)
{
throw Error.ArgumentNull("request");
}
return(GetNextPageHelper.GetNextPageLink(request.RequestUri, request.GetQueryNameValuePairs(), pageSize, instance, objToSkipTokenValue));
}
/// <summary>
/// Returns the URI for NextPageLink
/// </summary>
/// <param name="baseUri">BaseUri for nextlink. It should be request URI for top level resource and navigation link for nested resource.</param>
/// <param name="pageSize">Maximum number of records in the set of partial results for a resource.</param>
/// <param name="instance">Instance based on which SkipToken value will be generated.</param>
/// <param name="context">Serializer context</param>
/// <returns>Returns the URI for NextPageLink. If a null object is passed for the instance, resorts to the default paging mechanism of using $skip and $top.</returns>
public override Uri GenerateNextPageLink(Uri baseUri, int pageSize, Object instance, ODataSerializerContext context)
{
if (context == null)
{
return(null);
}
if (pageSize <= 0)
{
return(null);
}
Func <object, string> skipTokenGenerator = null;
IList <OrderByNode> orderByNodes = null;
ExpandedReferenceSelectItem expandedItem = context.CurrentSelectItem as ExpandedReferenceSelectItem;
IEdmModel model = context.Model;
DefaultQuerySettings settings = context.QueryContext.DefaultQuerySettings;
if (settings.EnableSkipToken)
{
if (expandedItem != null)
{
// Handle Delta resource; currently not value based.
if (DeltaHelper.IsDeltaOfT(context.ExpandedResource.GetType()))
{
return(GetNextPageHelper.GetNextPageLink(baseUri, pageSize));
}
if (expandedItem.OrderByOption != null)
{
orderByNodes = OrderByNode.CreateCollection(expandedItem.OrderByOption);
}
skipTokenGenerator = (obj) =>
{
return(GenerateSkipTokenValue(obj, model, orderByNodes));
};
return(GetNextPageHelper.GetNextPageLink(baseUri, pageSize, instance, skipTokenGenerator));
}
if (context.QueryOptions != null && context.QueryOptions.OrderBy != null)
{
orderByNodes = context.QueryOptions.OrderBy.OrderByNodes;
}
skipTokenGenerator = (obj) =>
{
return(GenerateSkipTokenValue(obj, model, orderByNodes));
};
}
return(GetNextPageHelper.GetNextPageLink(baseUri, pageSize, instance, skipTokenGenerator));
}
/// <summary>
/// Creates a link for the next page of results; To be used as the value of @odata.nextLink.
/// </summary>
/// <param name="request">The request on which to base the next page link.</param>
/// <param name="pageSize">The number of results allowed per page.</param>
/// <returns>A next page link.</returns>
public static Uri GetNextPageLink(this HttpRequest request, int pageSize)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
UriBuilder uriBuilder = new UriBuilder(request.Scheme, request.Host.Host, request.Host.Port.HasValue ? request.Host.Port.Value : 80, (request.PathBase + request.Path).ToUriComponent());
IEnumerable <KeyValuePair <string, string> > queryParameters = request.Query.SelectMany(kvp => kvp.Value, (kvp, value) => new KeyValuePair <string, string>(kvp.Key, value));
return(GetNextPageHelper.GetNextPageLink(uriBuilder.Uri, queryParameters, pageSize));
}
private static Uri GetNestedNextPageLink(ODataSerializerContext writeContext, int pageSize)
{
Contract.Assert(writeContext.ExpandedResource != null);
IEdmNavigationSource sourceNavigationSource = writeContext.ExpandedResource.NavigationSource;
NavigationSourceLinkBuilderAnnotation linkBuilder = writeContext.Model.GetNavigationSourceLinkBuilder(sourceNavigationSource);
Uri navigationLink =
linkBuilder.BuildNavigationLink(writeContext.ExpandedResource, writeContext.NavigationProperty);
if (navigationLink != null)
{
return(GetNextPageHelper.GetNextPageLink(navigationLink, pageSize));
}
return(null);
}
/// <summary>
/// Creates a link for the next page of results; To be used as the value of @odata.nextLink.
/// </summary>
/// <param name="request">The request on which to base the next page link.</param>
/// <param name="pageSize">The number of results allowed per page.</param>
/// <returns>A next page link.</returns>
public static Uri GetNextPageLink(this HttpRequestMessage request, int pageSize)
{
if (request == null || request.RequestUri == null)
{
throw Error.ArgumentNull("request");
}
Uri requestUri = request.RequestUri;
if (!requestUri.IsAbsoluteUri)
{
throw Error.ArgumentUriNotAbsolute("request", requestUri);
}
return(GetNextPageHelper.GetNextPageLink(requestUri, request.GetQueryNameValuePairs(), pageSize));
}
private static Uri GetNestedNextPageLink(ODataSerializerContext writeContext, int pageSize, object obj)
{
Contract.Assert(writeContext.ExpandedResource != null);
Uri navigationLink;
IEdmNavigationSource sourceNavigationSource = writeContext.ExpandedResource.NavigationSource;
NavigationSourceLinkBuilderAnnotation linkBuilder = writeContext.Model.GetNavigationSourceLinkBuilder(sourceNavigationSource);
// In Contained Navigation, we don't have navigation property binding,
// Hence we cannot get the NavigationLink from the NavigationLinkBuilder
if (writeContext.NavigationSource.NavigationSourceKind() == EdmNavigationSourceKind.ContainedEntitySet)
{
// Contained navigation.
Uri idlink = linkBuilder.BuildIdLink(writeContext.ExpandedResource);
var link = idlink.ToString() + "/" + writeContext.NavigationProperty.Name;
navigationLink = new Uri(link);
}
else
{
// Non-Contained navigation.
navigationLink =
linkBuilder.BuildNavigationLink(writeContext.ExpandedResource, writeContext.NavigationProperty);
}
Uri nestedNextLink = GenerateQueryFromExpandedItem(writeContext, navigationLink);
SkipTokenHandler nextLinkGenerator = null;
if (writeContext.QueryContext != null)
{
nextLinkGenerator = writeContext.QueryContext.GetSkipTokenHandler();
}
if (nestedNextLink != null)
{
if (nextLinkGenerator != null)
{
return(nextLinkGenerator.GenerateNextPageLink(nestedNextLink, pageSize, obj, writeContext));
}
return(GetNextPageHelper.GetNextPageLink(nestedNextLink, pageSize));
}
return(null);
}
/// <summary>
/// Creates a link for the next page of results; To be used as the value of @odata.nextLink.
/// </summary>
/// <param name="request">The request on which to base the next page link.</param>
/// <param name="pageSize">The number of results allowed per page.</param>
/// <param name="instance">Object which can be used to generate the skiptoken value.</param>
/// <param name="objectToSkipTokenValue">Function that takes in the last object and returns the skiptoken value string.</param>
/// <returns>A next page link.</returns>
public static Uri GetNextPageLink(this HttpRequest request, int pageSize, object instance, Func <object, string> objectToSkipTokenValue)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
UriBuilder uriBuilder = new UriBuilder(request.Scheme, request.Host.Host)
{
Path = (request.PathBase + request.Path).ToUriComponent()
};
if (request.Host.Port.HasValue)
{
uriBuilder.Port = request.Host.Port.Value;
}
CompatibilityOptions compatibilityOptions = request.GetCompatibilityOptions();
IEnumerable <KeyValuePair <string, string> > queryParameters = request.Query.SelectMany(kvp => kvp.Value, (kvp, value) => new KeyValuePair <string, string>(kvp.Key, value));
return(GetNextPageHelper.GetNextPageLink(uriBuilder.Uri, queryParameters, pageSize, instance, objectToSkipTokenValue, compatibilityOptions));
}
