public virtual object ApplyQueryOptions(object value, HttpRequest request, ActionDescriptor actionDescriptor, AssembliesResolver assembliesResolver)
{
var elementClrType = value is IEnumerable
? TypeHelper.GetImplementedIEnumerableType(value.GetType())
: value.GetType();
var model = request.ODataProperties().Model;
if (model == null)
{
throw Error.InvalidOperation(SRResources.QueryGetModelMustNotReturnNull);
}
var queryContext = new ODataQueryContext(
model,
elementClrType,
assembliesResolver,
request.ODataProperties().Path
);
var queryOptions = new ODataQueryOptions(queryContext, request, assembliesResolver);
var enumerable = value as IEnumerable;
if (enumerable == null)
{
// response is single entity.
return(value);
}
// response is a collection.
var query = (value as IQueryable) ?? enumerable.AsQueryable();
query = queryOptions.ApplyTo(query,
new ODataQuerySettings
{
// TODO: If we are using SQL, set this to false
// otherwise if it is entities in code then
// set it to true
HandleNullPropagation =
//HandleNullPropagationOption.True
HandleNullPropagationOptionHelper.GetDefaultHandleNullPropagationOption(query),
PageSize = actionDescriptor.PageSize(),
SearchDerivedTypeWhenAutoExpand = true
},
AllowedQueryOptions.None);
// Determine if this result should be a single entity
if (ODataCountMediaTypeMapping.IsCountRequest(request))
{
long?count = request.ODataProperties().TotalCount;
if (count.HasValue)
{
// Return the count value if it is a $count request.
return(count.Value);
}
}
return(query);
}
private int?ResolvePageSize(ODataQuerySettings querySettings, ActionDescriptor actionDescriptor)
{
// if (!_pageSizeChecked)
// {
// _pageSizeChecked = true;
var queryPageSize = querySettings.PageSize;
var actionPageSize = actionDescriptor.PageSize();
_pageSize = actionPageSize.IsSet ? actionPageSize.Size : queryPageSize;
// }
return(_pageSize);
}
