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NRE from ExpressionDispatcher.Analyzer #132

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GoogleCodeExporter opened this issue Apr 24, 2015 · 2 comments
Open

NRE from ExpressionDispatcher.Analyzer #132

GoogleCodeExporter opened this issue Apr 24, 2015 · 2 comments
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auto-migrated Component-DbLinq Priority-Medium Type-Defect

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@GoogleCodeExporter
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System.NullReferenceException: Object reference not set to an instance of
an object
at DbLinq.Data.Linq.Sugar.Implementation.ExpressionDispatcher.AnalyzeMember
(System.Linq.Expressions.Expression,DbLinq.Data.Linq.Sugar.BuilderContext)
[0x001f0] in
/home/scott/source/dblinq2007/src/DbLinq/Data/Linq/Sugar/Implementation/Expressi
onDispatcher.Analyzer.cs:701

There is a TODO in the code about null checking.

The query in question is:

var shirts = from p in Db.Products
    where p.DesignId == 2 && p.Category == "Shirt"
    from s in Db.Skus
    where s.ProductId == p.Id
    select s.Id;

Original issue reported on code.google.com by lunchtim...@gmail.com on 7 May 2009 at 7:11
@GoogleCodeExporter
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The following code generate the same error against the Northwind DB:

            var db = CreateDB();
            var shirts = from p in db.Products
                         where p.CategoryID == 1
                         from o in db.OrderDetails
                         where o.ProductID == p.ProductID
                         select o.ProductID;
            foreach (var shirt in shirts)
                Console.WriteLine("# shirt: {0}", shirt);

Original comment by jonmpr...@gmail.com on 19 Jan 2010 at 10:42

@GoogleCodeExporter
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Please, try out with the sourcecode attached. The source code contains to the 
DBlinq, dbmetal and dblinq.postgressql projects. To use this, download the 
official source, replace the correspondents folders for the attacheds and 
compile.
I was working on and testing the following issues:

Postgres Issue
34
Stored procedure Issue
238 (Actually,. this post already had a solution, but I found it before read 
this post)
Contains Issue
163
Join issues
81, 138, 179
Group issues
64, 113, 157, 158
Cast Issue
211

It'll be very good if someone else test this code!

Thanks!

Original comment by tos.oliv...@gmail.com on 1 Apr 2012 at 1:11

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