[dna-issues] [JBoss JIRA] Commented: (DNA-28) Create a sequencer to set the MIME type by processing the file contents

[Michael Trezzi (JIRA)]

    [ http://jira.jboss.com/jira/browse/DNA-28?page=comments#action_12415954 ] 
            
Michael Trezzi commented on DNA-28:
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Problem I see with sequencers is that they don't get anything close to a filename so guessing mimetype based on file extension is quite hard. That leads to other problems as without file extension, all e.g. OpenOffice documents are application/zip, all source files all text/plain, etc.

Is there any other way how to get the currently sequenced node reference to search for other info?

> Create a sequencer to set the MIME type by processing the file contents
> -----------------------------------------------------------------------
>
>                 Key: DNA-28
>                 URL: http://jira.jboss.com/jira/browse/DNA-28
>             Project: DNA
>          Issue Type: Feature Request
>          Components: Sequencers
>            Reporter: Randall Hauch
>            Priority: Minor
>             Fix For: Future Releases
>
>
> This sequencer would process the file contents and set the jcr:mimeType property.  One approach might be to do it based upon the file extension.  Another might be to process the file content.  A third would be to do both and to determine the best MIME type by using simple logic (e.g., weights) to determine if they conflict.
> Some techniques include JMimeMagic (see http://marvinlee.wordpress.com/2007/10/24/check-uploaded-file-mime-type-with-jmimemagic/); those summarized http://www.rgagnon.com/javadetails/java-0487.html; and even what's built into the JDK (http://www.simongbrown.com/blog/2003/12/09/getting_mime_types_with_java_net_filenamemap.html).

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