public virtual object ApplyQueryOptions(object value, HttpRequest request, ActionDescriptor descriptor)
{
var elementClrType = TypeHelper.GetImplementedIEnumerableType(value.GetType());
var model = request.ODataProperties().Model;
if (model == null)
{
throw Error.InvalidOperation(SRResources.QueryGetModelMustNotReturnNull);
}
var queryContext = new ODataQueryContext(
model,
elementClrType,
request.ODataProperties().Path);
var queryOptions = new ODataQueryOptions(queryContext, request);
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();
return queryOptions.ApplyTo(query,
new ODataQuerySettings
{
HandleNullPropagation = HandleNullPropagationOption.True
});
}
private IQueryable GetQuery()
{
ODataPath path = this.GetPath();
RestierQueryBuilder builder = new RestierQueryBuilder(this.Api, path);
IQueryable queryable = builder.BuildQuery();
this.shouldReturnCount = builder.IsCountPathSegmentPresent;
this.shouldWriteRawValue = builder.IsValuePathSegmentPresent;
if (queryable == null)
{
throw new HttpResponseException(
this.Request.CreateErrorResponse(
HttpStatusCode.NotFound,
Resources.ResourceNotFound));
}
if (this.shouldReturnCount || this.shouldWriteRawValue)
{
// Query options don't apply to $count or $value.
return queryable;
}
ODataQueryContext queryContext =
new ODataQueryContext(this.Request.ODataProperties().Model, queryable.ElementType, path);
ODataQueryOptions queryOptions = new ODataQueryOptions(queryContext, this.Request);
// TODO GitHubIssue#41 : Ensure stable ordering for query
ODataQuerySettings settings = new ODataQuerySettings()
{
HandleNullPropagation = HandleNullPropagationOption.False,
EnsureStableOrdering = true,
EnableConstantParameterization = false,
PageSize = null, // no support for server enforced PageSize, yet
};
queryable = queryOptions.ApplyTo(queryable, settings);
return queryable;
}
public static string[] GetExpandedProperties(this ODataQueryOptions oDataQueryOptions)
{
if (oDataQueryOptions == null)
{
throw new ArgumentNullException(nameof(oDataQueryOptions));
}