public async Task ExecuteAsync(ODataUri odataUri, OeRequestHeaders headers, Stream stream, CancellationToken cancellationToken)
{
OeParseUriContext parseUriContext = ParseUri(odataUri);
parseUriContext.Headers = headers;
parseUriContext.EntitySetAdapter = _dataAdapter.GetEntitySetAdapter(parseUriContext.EntitySet.Name);
Object dataContext = null;
try
{
dataContext = _dataAdapter.CreateDataContext();
if (parseUriContext.IsCountSegment)
{
int count = _dataAdapter.ExecuteScalar <int>(dataContext, parseUriContext);
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(count.ToString());
stream.Write(buffer, 0, buffer.Length);
}
else
{
using (Db.OeEntityAsyncEnumerator asyncEnumerator = _dataAdapter.ExecuteEnumerator(dataContext, parseUriContext, cancellationToken))
await Writers.OeGetWriter.SerializeAsync(BaseUri, parseUriContext, asyncEnumerator, stream).ConfigureAwait(false);
}
}
finally
{
if (dataContext != null)
{
_dataAdapter.CloseDataContext(dataContext);
}
}
}
public async Task ExecuteAsync(ODataUri odataUri, OeRequestHeaders headers, Stream stream, CancellationToken cancellationToken)
{
Object dataContext = null;
try
{
dataContext = _dataAdapter.CreateDataContext();
OeQueryContext queryContext = CreateQueryContext(odataUri, headers.MaxPageSize, headers.NavigationNextLink, headers.MetadataLevel);
if (queryContext.IsCountSegment)
{
headers.ResponseContentType = OeRequestHeaders.TextDefault.ContentType;
int count = _dataAdapter.ExecuteScalar <int>(dataContext, queryContext);
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(count.ToString(CultureInfo.InvariantCulture));
stream.Write(buffer, 0, buffer.Length);
}
else
{
using (Db.OeAsyncEnumerator asyncEnumerator = _dataAdapter.ExecuteEnumerator(dataContext, queryContext, cancellationToken))
await Writers.OeGetWriter.SerializeAsync(queryContext, asyncEnumerator, headers.ContentType, stream).ConfigureAwait(false);
}
}
finally
{
if (dataContext != null)
{
_dataAdapter.CloseDataContext(dataContext);
}
}
}
public async Task ExecuteAsync(Uri requestUri, OeRequestHeaders headers, Stream stream, CancellationToken cancellationToken)
{
OeParseUriContext parseUriContext = ParseUri(requestUri);
parseUriContext.Headers = headers;
parseUriContext.EntitySetAdapter = _dataAdapter.GetEntitySetAdapter(parseUriContext.EntitySet.Name);
Object dataContext = null;
try
{
dataContext = _dataAdapter.CreateDataContext();
if (parseUriContext.IsCountSegment)
{
int count = _dataAdapter.ExecuteScalar <int>(parseUriContext, dataContext);
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(count.ToString());
stream.Write(buffer, 0, buffer.Length);
}
else
{
long?count = null;
if (parseUriContext.ODataUri.QueryCount.GetValueOrDefault())
{
var countParseUriContext = new OeParseUriContext(parseUriContext.EdmModel
, parseUriContext.ODataUri
, parseUriContext.EntitySet
, parseUriContext.ParseNavigationSegments
, true);
countParseUriContext.Headers = parseUriContext.Headers;
countParseUriContext.EntitySetAdapter = parseUriContext.EntitySetAdapter;
count = _dataAdapter.ExecuteScalar <int>(countParseUriContext, dataContext);
}
using (Db.OeEntityAsyncEnumerator asyncEnumerator = _dataAdapter.ExecuteEnumerator(parseUriContext, dataContext, cancellationToken))
await Writers.OeGetWriter.SerializeAsync(BaseUri, parseUriContext, asyncEnumerator, stream, count).ConfigureAwait(false);
}
}
finally
{
if (dataContext != null)
{
_dataAdapter.CloseDataContext(dataContext);
}
}
}