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https://issues.apache.org/jira/browse/LUCENENET-500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581652#comment-13581652
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Christopher Currens commented on LUCENENET-500:
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The Lucene.Net assembly is missing {{[assembly: AllowPartiallyTrustedCallers]}}
in {{AssemblyInfo.cs}}. Adding it fixed the issue. I'll need to add the
attribute to the contrib assemblies as well, I'm sure. If we want spatial to
work, we'll need to do make sure its dependencies have this attribute as well.
> Lucene fails to run in medium trust ASP.NET Application
> -------------------------------------------------------
>
> Key: LUCENENET-500
> URL: https://issues.apache.org/jira/browse/LUCENENET-500
> Project: Lucene.Net
> Issue Type: Bug
> Components: Lucene.Net Core
> Affects Versions: Lucene.Net 3.0.3
> Reporter: Simon Svensson
> Assignee: Christopher Currens
> Fix For: Lucene.Net 3.0.3
>
>
> I'm having trouble upgrading a web application running under medium trust
> from 2.9.4 to 3.0.3. Code that previously worked now throws a
> SecurityException.
> [SecurityException: Request for the permission of type
> 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0,
> Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
> Lucene.Net.Support.WeakKey`1..ctor(T key) +0
> Lucene.Net.Support.WeakDictionary`2.get_Item(TKey key) +113
> Lucene.Net.Util.DefaultAttributeFactory.GetClassForInterface() +178
> Lucene.Net.Util.DefaultAttributeFactory.CreateAttributeInstance() +95
> Lucene.Net.Util.AttributeSource.AddAttribute() +375
> Lucene.Net.Analysis.CharTokenizer..ctor(TextReader input) +126
> Lucene.Net.Analysis.WhitespaceTokenizer..ctor(TextReader in) +37
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