System.TypeInitializationException on linux
-------------------------------------------
Key: LUCENENET-324
URL: https://issues.apache.org/jira/browse/LUCENENET-324
Project: Lucene.Net
Issue Type: Bug
Environment: debian, vbnc, Visual Basic
Reporter: Johannes von Drachenfels
Priority: Minor
Problem:
When the environment variable "OS" is not present a failure occurs when
initializing an Lucene.Net.Store.FSDirectory
--------------------------------------------------------------------
Exception:
--------------------------------------------------------------------
> ################################
>
> System.TypeInitializationException: An exception was thrown by the
> type initializer for Lucene.Net.Store.FSDirectory --->
> System.TypeInitializationException: An exception was thrown by the
> type initializer for Lucene.Net.Util.Constants --->
> System.NullReferenceException: Object reference not set to an instance
> of an object
>
> at Lucene.Net.Util.Constants..cctor () [0x00000]
>
> --- End of inner exception stack trace ---
>
> at Lucene.Net.Store.FSDirectory..cctor () [0x00000]
>
> --- End of inner exception stack trace ---
>
> at ConsoleApplication1.Module1.Main () [0x00000]
Solution:
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This is probably caused by this line in Lucene.Net.Util.Constants.cs:
public static readonly System.String OS_NAME =
System.Environment.GetEnvironmentVariable("OS");
Try to assign some value to the env var "OS":
OS=foo mono yourapp.exe
Robert
Workarround:
--------------------------------------------------------------------
'bugfix:
Dim OSSTRING As String = ""
Try
OSSTRING = System.Environment.GetEnvironmentVariable("OS")
Catch ex As Exception
OSSTRING = ""
End Try
If OSSTRING.Trim.Length = 0 Then
System.Environment.SetEnvironmentVariable("OS", "linux")
End If
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