private ICollectionPage <Quaggan> ConvertAsyncResponse(Task <IResponse <ICollection <QuagganDataContract> > > task, int pageIndex)
{
Contract.Requires(task != null);
Contract.Ensures(Contract.Result <ICollectionPage <Quaggan> >() != null);
var values = this.converterForPageResponse.Convert(task.Result);
if (values == null)
{
return(new CollectionPage <Quaggan>(0));
}
PageContextPatchUtility.Patch(values, pageIndex);
return(values);
}
/// <inheritdoc />
ICollectionPage <Quaggan> IPaginator <Quaggan> .FindPage(int pageIndex)
{
var request = new QuagganPageRequest
{
Page = pageIndex
};
var response = this.serviceClient.Send <ICollection <QuagganDataContract> >(request);
var values = this.converterForPageResponse.Convert(response);
if (values == null)
{
return(new CollectionPage <Quaggan>(0));
}
PageContextPatchUtility.Patch(values, pageIndex);
return(values);
}
/// <inheritdoc />
ICollectionPage <TValue> IConverter <IResponse <ICollection <TDTO> >, ICollectionPage <TValue> > .Convert(IResponse <ICollection <TDTO> > value, object state)
{
if (value == null)
{
return(new CollectionPage <TValue>(0));
}
// MEMO: expect the page index as state argument, because we can't parse Link headers yet
var pageIndex = state as int?;
if (!pageIndex.HasValue)
{
throw new ArgumentException("Precondition: state is int", "state");
}
var dataContracts = value.Content;
if (dataContracts == null)
{
return(new CollectionPage <TValue>(0));
}
var page = new CollectionPage <TValue>(dataContracts.Count)
{
PageSize = value.GetPageSize(),
PageCount = value.GetPageTotal(),
SubtotalCount = value.GetResultCount(),
TotalCount = value.GetResultTotal()
};
page.AddRange(dataContracts.Select(dataContract => this.dataContractConverter.Convert(dataContract, value)));
// TODO: replace this code with an implementation of the Link header
PageContextPatchUtility.Patch(page, pageIndex.Value);
return(page);
}
