/// <summary>
/// Applies expand for the given <see cref="IQueryable"/>.
/// </summary>
/// <param name="queryable">The queryable to expand.</param>
/// <param name="entityQuery">The entity query containing the expand information.</param>
/// <param name="elementType">The element type of the queryable.</param>
/// <param name="postExecuteExpandPaths">An output parameter with expand paths that have to be expanded after the query execution.</param>
/// <returns>The expanded queryable.</returns>
protected virtual IQueryable ApplyExpand(IQueryable queryable, EntityQuery entityQuery, Type elementType, out List <string> postExecuteExpandPaths)
{
postExecuteExpandPaths = null;
if (EntityQuery.ApplyExpand != null)
{
return(EntityQuery.ApplyExpand(entityQuery, queryable, elementType));
}
if (entityQuery.ExpandClause == null)
{
return(queryable);
}
if (!_entityMetadataProvider.IsEntityType(elementType))
{
throw new InvalidOperationException($"Unknown entity type {elementType}.");
}
var metadata = _entityMetadataProvider.GetMetadata(elementType);
if (!CanApplyQueryExpands(queryable, metadata, entityQuery))
{
postExecuteExpandPaths = entityQuery.ExpandClause.PropertyPaths.ToList();
return(queryable);
}
foreach (var propertyPath in entityQuery.ExpandClause.PropertyPaths)
{
queryable = ApplyQueryExpand(queryable, propertyPath.Replace('/', '.'));
}
return(queryable);
}
public override void OnActionExecuted(ActionExecutedContext context)
{
var qs = QueryFns.ExtractAndDecodeQueryString(context);
if (qs == null)
{
base.OnActionExecuted(context);
return;
}
var queryable = QueryFns.ExtractQueryable(context);
if (queryable == null)
{
base.OnActionExecuted(context);
}
var eq = new EntityQuery(qs);
var eleType = TypeFns.GetElementType(queryable.GetType());
eq.Validate(eleType);
int?inlineCount = null;
var originalQueryable = queryable;
queryable = eq.ApplyWhere(queryable, eleType);
if (eq.IsInlineCountEnabled)
{
inlineCount = (int)Queryable.Count((dynamic)queryable);
}
queryable = eq.ApplyOrderBy(queryable, eleType);
queryable = eq.ApplySkip(queryable, eleType);
queryable = eq.ApplyTake(queryable, eleType);
queryable = eq.ApplySelect(queryable, eleType);
queryable = eq.ApplyExpand(queryable, eleType);
if (queryable != originalQueryable)
{
// if a select or expand was encountered we need to
// execute the DbQueries here, so that any exceptions thrown can be properly returned.
// if we wait to have the query executed within the serializer, some exceptions will not
// serialize properly.
var listResult = Enumerable.ToList((dynamic)queryable);
var qr = new QueryResult(listResult, inlineCount);
context.Result = new ObjectResult(qr);
}
base.OnActionExecuted(context);
}
public override void OnActionExecuted(ActionExecutedContext context)
{
var qs = QueryFns.ExtractAndDecodeQueryString(context);
if (qs == null)
{
base.OnActionExecuted(context);
return;
}
var queryable = QueryFns.ExtractQueryable(context);
if (queryable == null)
{
base.OnActionExecuted(context);
return;
}
var eq = new EntityQuery(qs);
var eleType = TypeFns.GetElementType(queryable.GetType());
eq.Validate(eleType);
int?inlineCount = null;
queryable = eq.ApplyWhere(queryable, eleType);
if (eq.IsInlineCountEnabled)
{
inlineCount = (int)Queryable.Count((dynamic)queryable);
}
queryable = eq.ApplyOrderBy(queryable, eleType);
queryable = eq.ApplySkip(queryable, eleType);
queryable = eq.ApplyTake(queryable, eleType);
queryable = eq.ApplySelect(queryable, eleType);
queryable = eq.ApplyExpand(queryable, eleType);
// if a select or expand was encountered we need to
// execute the DbQueries here, so that any exceptions thrown can be properly returned.
// if we wait to have the query executed within the serializer, some exceptions will not
// serialize properly.
var listResult = Enumerable.ToList((dynamic)queryable);
var qr = new QueryResult(listResult, inlineCount);
var breezeConfig = context.HttpContext.RequestServices.GetService <IBreezeConfig>();
context.Result = new ObjectResult(qr)
{
Formatters = new FormatterCollection <IOutputFormatter>
{
#if NETCOREAPP3_1 || NETCOREAPP3_0
new NewtonsoftJsonOutputFormatter(breezeConfig.GetJsonSerializerSettings(),
context.HttpContext.RequestServices.GetRequiredService <ArrayPool <char> >(),
context.HttpContext.RequestServices.GetRequiredService <MvcOptions>())
#else
new JsonOutputFormatter(breezeConfig.GetJsonSerializerSettings(),
context.HttpContext.RequestServices.GetRequiredService <ArrayPool <char> >())
#endif
}
};
var session = GetSession(queryable);
if (session != null)
{
Close(session);
}
base.OnActionExecuted(context);
}
public override void OnActionExecuted(HttpActionExecutedContext context)
{
var qs = QueryFns.ExtractAndDecodeQueryString(context);
if (qs == null)
{
base.OnActionExecuted(context);
return;
}
var queryable = QueryFns.ExtractQueryable(context);
if (queryable == null)
{
base.OnActionExecuted(context);
return;
}
var eq = new EntityQuery(qs);
var eleType = TypeFns.GetElementType(queryable.GetType());
eq.Validate(eleType);
int?inlineCount = null;
var originalQueryable = queryable;
queryable = eq.ApplyWhere(queryable, eleType);
IFutureValue <int> inlineCountFuture = null;
if (eq.IsInlineCountEnabled)
{
if (UseFuture)
{
var countExpr = GetCountExpressionMethod.MakeGenericMethod(eleType).Invoke(this, new object[0]);
inlineCountFuture = (IFutureValue <int>)ToFutureValueMethod.MakeGenericMethod(eleType, typeof(int))
.Invoke(null, new[] { queryable, countExpr });
}
else
{
inlineCount = (int)Queryable.Count((dynamic)queryable);
}
}
queryable = eq.ApplyOrderBy(queryable, eleType);
queryable = eq.ApplySkip(queryable, eleType);
queryable = eq.ApplyTake(queryable, eleType);
queryable = eq.ApplySelect(queryable, eleType);
queryable = eq.ApplyExpand(queryable, eleType);
if (queryable != originalQueryable)
{
// if a select or expand was encountered we need to
// execute the DbQueries here, so that any exceptions thrown can be properly returned.
// if we wait to have the query executed within the serializer, some exceptions will not
// serialize properly.
dynamic listResult;
if (UseFuture)
{
var future = ToFutureMethod.MakeGenericMethod(eleType).Invoke(null, new object[] { queryable });
listResult = Enumerable.ToList((dynamic)future.GetType().GetMethod("GetEnumerable").Invoke(future, new object[0]));
}
else
{
listResult = Enumerable.ToList((dynamic)queryable);
}
var qr = new QueryResult(listResult, inlineCountFuture?.Value ?? inlineCount);
if (CloseSession)
{
var session = GetSession(queryable);
if (session != null)
{
Close(session);
}
}
context.Response = context.Request.CreateResponse(HttpStatusCode.OK, qr);
}
base.OnActionExecuted(context);
}
