Atlassian SDK InvalidCastException when using LINQ expressions - vb.net

Question

Let's start out by saying I'm not a terrifically experienced developer, so there is every possibility that I'm completely missing something here.
I'm implementing the Atlassian.NET SDK in a VB .Net solution. For the most part things work well, but I get the following error when I try to use the LINQ provider directly:
An unhandled exception of type 'System.InvalidCastException' occurred
in Atlassian.Jira.dll
Additional information: Unable to cast object of type
'System.Linq.Expressions.PropertyExpression' to type
'System.Linq.Expressions.ConstantExpression'.
The full exception:
System.InvalidCastException was unhandled HResult=-2147467262
Message=Unable to cast object of type
'System.Linq.Expressions.PropertyExpression' to type
'System.Linq.Expressions.ConstantExpression'. Source=Atlassian.Jira
StackTrace:
at Atlassian.Jira.Linq.JqlExpressionVisitor.GetFieldNameFromBinaryExpression(BinaryExpression
expression) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JqlExpressionVisitor.cs:line
65
at Atlassian.Jira.Linq.JqlExpressionVisitor.ProcessIndexedMemberEqualityOperator(BinaryExpression
expression, Boolean equal) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JqlExpressionVisitor.cs:line
142
at Atlassian.Jira.Linq.JqlExpressionVisitor.ProcessEqualityOperator(BinaryExpression
expression, Boolean equal) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JqlExpressionVisitor.cs:line
136
at Atlassian.Jira.Linq.JqlExpressionVisitor.VisitBinary(BinaryExpression
node) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JqlExpressionVisitor.cs:line
325
at System.Linq.Expressions.BinaryExpression.Accept(ExpressionVisitor
visitor)
at System.Linq.Expressions.ExpressionVisitor.Visit(Expression node)
at System.Linq.Expressions.ExpressionVisitor.VisitLambda[T](Expression`1
node)
at System.Linq.Expressions.Expression`1.Accept(ExpressionVisitor visitor)
at System.Linq.Expressions.ExpressionVisitor.Visit(Expression node)
at System.Linq.Expressions.ExpressionVisitor.VisitUnary(UnaryExpression
node)
at System.Linq.Expressions.UnaryExpression.Accept(ExpressionVisitor
visitor)
at System.Linq.Expressions.ExpressionVisitor.Visit(Expression node)
at System.Linq.Expressions.ExpressionVisitor.VisitArguments(IArgumentProvider
nodes)
at System.Linq.Expressions.ExpressionVisitor.VisitMethodCall(MethodCallExpression
node)
at Atlassian.Jira.Linq.JqlExpressionVisitor.VisitMethodCall(MethodCallExpression
node) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JqlExpressionVisitor.cs:line
252
at System.Linq.Expressions.MethodCallExpression.Accept(ExpressionVisitor
visitor)
at System.Linq.Expressions.ExpressionVisitor.Visit(Expression node)
at System.Linq.Expressions.ExpressionVisitor.VisitArguments(IArgumentProvider
nodes)
at System.Linq.Expressions.ExpressionVisitor.VisitMethodCall(MethodCallExpression
node)
at Atlassian.Jira.Linq.JqlExpressionVisitor.VisitMethodCall(MethodCallExpression
node) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JqlExpressionVisitor.cs:line
252
at System.Linq.Expressions.MethodCallExpression.Accept(ExpressionVisitor
visitor)
at System.Linq.Expressions.ExpressionVisitor.Visit(Expression node)
at Atlassian.Jira.Linq.JqlExpressionVisitor.Process(Expression expression) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JqlExpressionVisitor.cs:line
42
at Atlassian.Jira.Linq.JiraQueryProvider.Execute(Expression expression, Boolean isEnumerable) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JiraQueryProvider.cs:line
44
at Atlassian.Jira.Linq.JiraQueryProvider.Execute(Expression expression) in
c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JiraQueryProvider.cs:line
39
at Atlassian.Jira.Linq.JiraQueryable`1.GetEnumerator() in c:\projects\atlassian-net-sdk\Atlassian.Jira\Linq\JiraQueryable.cs:line
29
at System.Linq.Buffer1..ctor(IEnumerable\1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at JiraUpdater.JiraStuff.GetIssueByDetail(String summary) in C:\Users\v709092\Documents\Visual Studio
2013\Projects\JiraUpdater\JiraUpdater\JiraStuff.vb:line 33
at JiraUpdater.Form1.ButtonMassUpdate_Click(Object sender, EventArgs e) in C:\Users\v709092\Documents\Visual Studio
2013\Projects\JiraUpdater\JiraUpdater\Form1.vb:line 98
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr
dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32
reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32
reason, ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[]
commandLine)
at JiraUpdater.My.MyApplication.Main(String[] Args) in :line 81
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart() InnerException:
My code is a straight forward conversion of sample code found on the project WIKI page.
Dim myJira As Jira = Jira.CreateRestClient("JiraServer", "username", "password")
Dim myIssueQuery = From i In myJira.Issues
Where i.Project = "JiraProjectName"
Select i
Console.WriteLine( myIssueQuery.Count())
After doing some research I've become pretty convinced that this is an issue with how the LINQ provider is handling the query. This issue was reported to the developer a long while ago and marked as "Won't Fix" because the developer was not familiar with VB.
I'd really appreciate any assistance in either providing the developer relevant details to fix the issue on their side, or more realistically help pointing out what I'm doing wrong.

Answer 1

The Api for Jira can get a little complex and it is easy to end up using an older one that won't do what you want. I have had the best results using the nuget package "Atlassian.SDK".
With this it is relatively trivial to do what you want. this is C# code but I guess the vb.net can't be much different.
this.JiraConnection = Jira.CreateRestClient(jiraUrl, jiraUser, jiraPassword);
string jql = "project = TC";
IEnumerable<Issue> issues = this.JiraConnection.GetIssuesFromJql(jql, 100);
This allows you to use use the Jira Query Language to get the issues you want, which in my tests proved faster & more reliable than querying using Linq.
HTH