public IEnumerable <Dictionary <String, Object> > Resolve(ResolveFieldContext context)
{
var results = new List <Dictionary <String, Object> >();
var translator = new OeGraphqlAstToODataUri(_edmModel, context);
ODataUri odataUri = translator.Translate(context.Document.OriginalQuery);
IEdmModel refModel = _edmModel.GetEdmModel(odataUri.Path);
Db.OeDataAdapter dataAdapter = refModel.GetDataAdapter(refModel.EntityContainer);
context.UserContext = dataAdapter.CreateDataContext();
try
{
var queryContext = new Parsers.OeQueryContext(refModel, odataUri);
IAsyncEnumerator <Object> asyncEnumerator = dataAdapter.Execute(context.UserContext, queryContext).GetEnumerator();
using (var entityAsyncEnumerator = new OeGraphqlAsyncEnumerator(asyncEnumerator, queryContext.EntryFactory))
{
while (entityAsyncEnumerator.MoveNext().GetAwaiter().GetResult())
{
results.Add(entityAsyncEnumerator.Current);
}
}
}
finally
{
if (context.UserContext != null)
{
dataAdapter.CloseDataContext(context.UserContext);
}
}
return(results);
}
private IAsyncEnumerable <Object> ExecuteGet(IEdmModel refModel, ODataUri odataUri, OeRequestHeaders headers, IQueryable source)
{
if (_modelBoundProvider != null)
{
_modelBoundProvider.Validate(_edmModel, odataUri);
}
_queryContext = new OeQueryContext(refModel, odataUri)
{
MetadataLevel = headers.MetadataLevel
};
if (odataUri.Path.LastSegment is OperationSegment)
{
return(OeOperationHelper.ApplyBoundFunction(_queryContext));
}
if (source != null)
{
_queryContext.QueryableSource = e => e == _queryContext.EntryFactory.EntitySet ? source : null;
}
if (_queryContext.ODataUri.Path.LastSegment is CountSegment)
{
headers.ResponseContentType = OeRequestHeaders.TextDefault.ContentType;
int count = _dataAdapter.ExecuteScalar <int>(_dataContext, _queryContext);
return((IAsyncEnumerable <Object>)Infrastructure.AsyncEnumeratorHelper.ToAsyncEnumerable(Task.FromResult(count)));
}
return(_dataAdapter.Execute(_dataContext, _queryContext));
}
public async Task ExecuteAsync(ODataUri odataUri, OeRequestHeaders headers, Stream stream, CancellationToken cancellationToken)
{
if (_modelBoundProvider != null)
{
_modelBoundProvider.Validate(_edmModel, odataUri);
}
var queryContext = new OeQueryContext(_edmModel, odataUri)
{
MetadataLevel = headers.MetadataLevel
};
if (queryContext.ODataUri.Path.LastSegment is OperationSegment)
{
using (IAsyncEnumerator <Object> asyncEnumerator = OeOperationHelper.ApplyBoundFunction(queryContext).GetEnumerator())
await Writers.OeGetWriter.SerializeAsync(queryContext, asyncEnumerator, headers.ContentType, stream, cancellationToken).ConfigureAwait(false);
return;
}
Object dataContext = null;
Db.OeDataAdapter dataAdapter = queryContext.EdmModel.GetDataAdapter(queryContext.EdmModel.EntityContainer);
try
{
dataContext = dataAdapter.CreateDataContext();
if (odataUri.Path.LastSegment is CountSegment)
{
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 (IAsyncEnumerator <Object> asyncEnumerator = dataAdapter.Execute(dataContext, queryContext).GetEnumerator())
await Writers.OeGetWriter.SerializeAsync(queryContext, asyncEnumerator, headers.ContentType, stream, cancellationToken).ConfigureAwait(false);
}
}
finally
{
if (dataContext != null)
{
dataAdapter.CloseDataContext(dataContext);
}
}
}
public async Task <IEnumerable <Dictionary <String, Object?> > > Resolve(IResolveFieldContext context)
{
var results = new List <Dictionary <String, Object?> >();
var translator = new OeGraphqlAstToODataUri(_edmModel, context);
ODataUri odataUri = translator.Translate(context.Document.OriginalQuery);
IEdmModel refModel = _edmModel.GetEdmModel(odataUri.Path);
Db.OeDataAdapter dataAdapter = refModel.GetDataAdapter(refModel.EntityContainer);
Object dataContext = dataAdapter.CreateDataContext();
OeGraphqlAsyncEnumerator?entityAsyncEnumerator = null;
try
{
var queryContext = new Parsers.OeQueryContext(refModel, odataUri);
IAsyncEnumerator <Object> asyncEnumerator = dataAdapter.Execute(dataContext, queryContext).GetAsyncEnumerator();
if (queryContext.EntryFactory == null)
{
throw new InvalidOperationException("queryContext.EntryFactory must be not null");
}
entityAsyncEnumerator = new OeGraphqlAsyncEnumerator(asyncEnumerator, queryContext.EntryFactory, CancellationToken.None);
while (await entityAsyncEnumerator.MoveNextAsync())
{
if (entityAsyncEnumerator.Current != null)
{
results.Add(entityAsyncEnumerator.Current);
}
}
}
finally
{
if (dataContext != null)
{
dataAdapter.CloseDataContext(dataContext);
}
if (entityAsyncEnumerator != null)
{
await entityAsyncEnumerator.DisposeAsync().ConfigureAwait(false);
}
}
return(results);
}