public async ValueTask <bool> MoveNextAsync()
{
if (_isFirstMoveNext)
{
_isFirstMoveNext = false;
_isMoveNext = await _dbEnumerator.MoveNextAsync().ConfigureAwait(false);
}
if (!_isMoveNext)
{
return(false);
}
Dictionary <String, Object?>?entity = null;
if (_dbEnumerator.Current != null)
{
entity = await CreateEntity(_dbEnumerator, _dbEnumerator.Current, _dbEnumerator.Current, _cancellationToken).ConfigureAwait(false);
}
_dbEnumerator.ClearBuffer();
_isMoveNext = await _dbEnumerator.MoveNextAsync().ConfigureAwait(false);
Current = entity;
return(true);
}
public async Task <bool> MoveNext(CancellationToken cancellationToken)
{
if (_isFirstMoveNext)
{
_isFirstMoveNext = false;
_isMoveNext = await _dbEnumerator.MoveNextAsync().ConfigureAwait(false);
}
if (!_isMoveNext)
{
return(false);
}
Dictionary <String, Object> entity = await CreateEntity(_dbEnumerator, _dbEnumerator.Current, _dbEnumerator.Current).ConfigureAwait(false);
Object buffer = _dbEnumerator.ClearBuffer();
_isMoveNext = await _dbEnumerator.MoveNextAsync().ConfigureAwait(false);
if (!_isMoveNext && _queryContext.SkipTokenNameValues != null && _queryContext.SkipTokenAccessors != null)
{
SetOrderByProperties(_queryContext, entity, buffer);
}
Current = entity;
return(true);
}
private static async Task <Object> CreateNestedEntity(Db.OeDbEnumerator dbEnumerator, Object value)
{
Object entity = dbEnumerator.Current;
if (entity == null)
{
return(null);
}
if (dbEnumerator.EntryFactory.ResourceInfo.IsCollection.GetValueOrDefault())
{
var entityList = new List <Object>();
do
{
Object item = dbEnumerator.Current;
if (item != null)
{
entityList.Add(await CreateEntity(dbEnumerator, item, item).ConfigureAwait(false));
}
}while (await dbEnumerator.MoveNextAsync().ConfigureAwait(false));
return(entityList);
}
return(await CreateEntity(dbEnumerator, value, entity).ConfigureAwait(false));
}
private static async Task <Object> CreateNestedEntity(Db.OeDbEnumerator dbEnumerator, Object value, Type nestedEntityType)
{
Object entity = dbEnumerator.Current;
if (entity == null)
{
return(null);
}
if (dbEnumerator.EntryFactory.ResourceInfo.IsCollection.GetValueOrDefault())
{
Infrastructure.IGenericListWrapper listWrapper = Infrastructure.GenericListWrapper.Create(nestedEntityType);
do
{
Object item = dbEnumerator.Current;
if (item != null)
{
listWrapper.Add(await CreateEntity(dbEnumerator, item, item, nestedEntityType).ConfigureAwait(false));
}
}while (await dbEnumerator.MoveNextAsync().ConfigureAwait(false));
return(listWrapper.List);
}
return(await CreateEntity(dbEnumerator, value, entity, nestedEntityType).ConfigureAwait(false));
}
private static async Task <Object?> CreateNestedEntity(Db.OeDbEnumerator dbEnumerator, Object value, CancellationToken cancellationToken)
{
Object entity = dbEnumerator.Current;
if (entity == null)
{
return(null);
}
var entryFactory = (OeNavigationEntryFactory)dbEnumerator.EntryFactory;
if (entryFactory.EdmNavigationProperty.Type.Definition is EdmCollectionType)
{
var entityList = new List <Object>();
do
{
Object item = dbEnumerator.Current;
if (item != null)
{
entityList.Add(await CreateEntity(dbEnumerator, item, item, cancellationToken).ConfigureAwait(false));
}
}while (await dbEnumerator.MoveNextAsync().ConfigureAwait(false));
return(entityList);
}
return(await CreateEntity(dbEnumerator, value, entity, cancellationToken).ConfigureAwait(false));
}
public async Task SerializeAsync(OeEntryFactory entryFactory, Db.OeAsyncEnumerator asyncEnumerator, OeQueryContext queryContext)
{
var resourceSet = new ODataResourceSet()
{
Count = asyncEnumerator.Count
};
_writer.WriteStart(resourceSet);
Object buffer = null;
int count = 0;
var dbEnumerator = new Db.OeDbEnumerator(asyncEnumerator, entryFactory);
while (await dbEnumerator.MoveNextAsync().ConfigureAwait(false))
{
Object value = dbEnumerator.Current;
await WriteEntry(dbEnumerator, value, _queryContext.NavigationNextLink).ConfigureAwait(false);
count++;
buffer = dbEnumerator.ClearBuffer();
}
if (queryContext.PageSize > 0 && count > 0 && (asyncEnumerator.Count ?? Int32.MaxValue) > count)
{
resourceSet.NextPageLink = BuildNextPageLink(queryContext, buffer);
}
_writer.WriteEnd();
}
private async Task WriteLazyNestedCollection(Db.OeDbEnumerator 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 WriteEagerNestedCollection(Db.OeDbEnumerator 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();
}