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https://issues.apache.org/jira/browse/LUCENENET-450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13141418#comment-13141418
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Digy commented on LUCENENET-450:
--------------------------------
Similarity net is obsolete and all of its functionality has been moved to
Contrib/Queries as in java(including unit tests).
https://svn.apache.org/repos/asf/incubator/lucene.net/trunk/src/contrib/README.txt
> Incorrect use of StreamReader in MoreLikeThis
> ---------------------------------------------
>
> Key: LUCENENET-450
> URL: https://issues.apache.org/jira/browse/LUCENENET-450
> Project: Lucene.Net
> Issue Type: Bug
> Components: Lucene.Net Contrib
> Affects Versions: Lucene.Net 2.9.2, Lucene.Net 2.9.4, Lucene.Net 3.x
> Reporter: Itamar Syn-Hershko
> Assignee: Prescott Nasser
> Fix For: Lucene.Net 2.9.4
>
> Attachments: Lucenenet-450.patch
>
>
> In the MoreLike this implementation (looking at the trunk), line 772
> incorrectly creates a new StreamReader instead of using StringReader. This
> causes the following exception to be thrown, since the ctor expects a file
> path and not an input string:
> System.ArgumentException: Illegal characters in path.
> at
> System.Security.Permissions.FileIOPermission.HasIllegalCharacters(String[]
> str)
> at
> System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess
> access, AccessControlActions control, String[] pathListOrig, Boolean
> checkForDuplicates, Boolean needFullPath, Boolean copyPathList)
> at
> System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess
> access, AccessControlActions control, String[] pathList, Boolean
> checkForDuplicates, Boolean needFullPath)
> at System.IO.FileStream.Init(String path, FileMode mode, FileAccess
> access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize,
> FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean
> bFromProxy, Boolean useLongPath)
> at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess
> access, FileShare share, Int32 bufferSize, FileOptions options, String
> msgPath, Boolean bFromProxy)
> at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess
> access, FileShare share, Int32 bufferSize, FileOptions options)
> at System.IO.StreamReader..ctor(String path, Encoding encoding, Boolean
> detectEncodingFromByteOrderMarks, Int32 bufferSize)
> at System.IO.StreamReader..ctor(String path, Boolean
> detectEncodingFromByteOrderMarks)
> at Similarity.Net.MoreLikeThis.RetrieveTerms(Int32 docNum) in
> MoreLikeThis.cs:line 773
> at Similarity.Net.MoreLikeThis.Like(Int32 docNum) in MoreLikeThis.cs:line
> 507
> Simply replacing StreamReader with StringReader will do the job
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