public async Task WriteAsync(OeEntryFactory entryFactory, IAsyncEnumerator <Object> asyncEnumerator)
{
var resourceSet = new ODataResourceSet()
{
Count = _queryContext.TotalCountOfItems
};
await _writer.WriteStartAsync(resourceSet).ConfigureAwait(false);
Object?rawValue = null;
int readCount = 0;
Db.IOeDbEnumerator dbEnumerator = entryFactory.IsTuple ?
(Db.IOeDbEnumerator) new Db.OeDbEnumerator(asyncEnumerator, entryFactory) : new Db.OeEntityDbEnumerator(asyncEnumerator, entryFactory);
while (await dbEnumerator.MoveNextAsync().ConfigureAwait(false))
{
await WriteEntry(dbEnumerator, dbEnumerator.Current).ConfigureAwait(false);
readCount++;
rawValue = dbEnumerator.RawValue;
dbEnumerator.ClearBuffer();
}
if (rawValue != null)
{
var nextPageLinkBuilder = new OeNextPageLinkBuilder(_queryContext);
resourceSet.NextPageLink = nextPageLinkBuilder.GetNextPageLinkRoot(entryFactory, readCount, _queryContext.TotalCountOfItems, rawValue);
}
await _writer.WriteEndAsync().ConfigureAwait(false);
}
private async Task WriteLazyNestedCollection(Db.IOeDbEnumerator dbEnumerator)
{
_writer.WriteStart(new ODataResourceSet());
do
{
Object value = dbEnumerator.Current;
if (value != null)
{
await WriteEntry(dbEnumerator, value, false).ConfigureAwait(false);
}
}while (await dbEnumerator.MoveNextAsync().ConfigureAwait(false));
_writer.WriteEnd();
}
private async Task WriteNavigationCollection(Db.IOeDbEnumerator dbEnumerator)
{
var entryFactory = (OeNavigationEntryFactory)dbEnumerator.EntryFactory;
Object value;
int readCount = 0;
ODataResourceSet?resourceSet = null;
do
{
value = dbEnumerator.Current;
if (value != null)
{
if (resourceSet == null)
{
resourceSet = new ODataResourceSet();
if (entryFactory.NavigationSelectItem.CountOption.GetValueOrDefault())
{
resourceSet.Count = OeNextPageLinkBuilder.GetNestedCount(_queryContext.EdmModel, dbEnumerator);
}
await _writer.WriteStartAsync(resourceSet).ConfigureAwait(false);
}
await WriteEntry(dbEnumerator, value).ConfigureAwait(false);
readCount++;
}
}while (await dbEnumerator.MoveNextAsync().ConfigureAwait(false));
if (resourceSet == null)
{
resourceSet = new ODataResourceSet();
if (entryFactory.NavigationSelectItem.CountOption.GetValueOrDefault())
{
resourceSet.Count = 0;
}
await _writer.WriteStartAsync(resourceSet).ConfigureAwait(false);
}
else
{
var nextPageLinkBuilder = new OeNextPageLinkBuilder(_queryContext);
resourceSet.NextPageLink = nextPageLinkBuilder.GetNextPageLinkNavigation(dbEnumerator, readCount, resourceSet.Count, value !);
}
await _writer.WriteEndAsync().ConfigureAwait(false);
}
private async Task WriteEagerNestedCollection(Db.IOeDbEnumerator dbEnumerator)
{
var items = new List <Object>();
do
{
Object value = dbEnumerator.Current;
if (value != null)
{
items.Add(value);
}
}while (await dbEnumerator.MoveNextAsync().ConfigureAwait(false));
_writer.WriteStart(new ODataResourceSet()
{
Count = items.Count
});
for (int i = 0; i < items.Count; i++)
{
await WriteEntry(dbEnumerator, items[i], false).ConfigureAwait(false);
}
_writer.WriteEnd();
}