Fetch after Select applies to wrong entity

[bahusoid]

See FetchAfterSelect test case added with GH3352 test case.

Query source is wrongly detected and fetch is applied to main entity instead of selected.

[hazzik]

var selector = ((StreamedSequenceInfo) queryModelVisitor.PreviousEvaluationType).ItemExpression;
var querySource = QuerySourceExtractor.GetQuerySource(selector); // QuerySourceExtractor is a subclass of Joiner

However, even if query source is extracted correctly test does not pass because the Component property is still uninitialized after the query.

[bahusoid]

Yeah. Later wrong HQL node is used for applying property fetch. I already have a WIP fix for this issue.