How to add a custom MIME type and override a default extension pattern?

Question

I am trying to add a custom mime type to Apache Tika.

I have the following custom-mimetypes.xml document in org.apache.tika.mime :

<?xml version="1.0" encoding="UTF-8"?>
<mime-info>
    <mime-type type="text/stringtemplategroup">
        <glob pattern="*.stg"/>
    </mime-type>
    <mime-type type="text/stringtemplate">
        <glob pattern="*.st"/>
    </mime-type>
</mime-info>

I am getting an error about a Conflicting extension pattern .st:

Caused by: org.apache.tika.mime.MimeTypeException: Conflicting extension pattern: .st
    at org.apache.tika.mime.MimeTypesReader.startElement(MimeTypesReader.java:166)
    at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)

How do I override the default entry for *.st extension and have it use my own?

Did you fix it? I am facing the same problem. Let me know if you figured it out — kittu, Jun 17 '15 at 14:31
I gave up TIka was a PITA because of some pretty bad design decisions about tightly coupling everything to a `File` object instead of an `InputStream` so using on Google App Engine was extremely hard and I had to fork and modify too much stuff to make it less painless. I ended up writing my own magic number classifier for the handful of types I support in my application. Tika is a good idea, terrible implementation. — , Jun 17 '15 at 15:17
real shame to read this as the guys in my development team forked tika and wrote lots of it to work from more of a stream model than remain coupled to File. Sadly though they weren't permitted to push back to the project due to fear from the company they work for and that was 3 or more years ago now! — default_avatar, Aug 03 '17 at 15:38

score 4 · Answer 1 · answered Jun 13 '18 at 22:52

4

Seems you need to add a magic tag with a priority

<mime-type type="text/stringtemplate">
    <magic priority="50">
        <!-- some match pattern -->
        <!-- <match value="[some characters]" type="string" offset="0" /> -->
    </magic>
    <glob pattern="*.st"/>
</mime-type>

answered Jun 13 '18 at 22:52

LMC

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thanks for the info, but in the end it does not fix the tight coupling to `File` even if this works. – Jun 14 '18 at 02:32
1

Thanks for the bounty, much appreciated. – LMC Jun 15 '18 at 23:48
1

thanks for taking the time and trying to help [those that might find this](https://xkcd.com/979/). – Jun 20 '18 at 01:39
1

:) funny enough I got to this question by mistake when SO changed its UI. I didn't realize it was an old one until I have posted my answer. It caught my attention since I added custom magic numbers for Quark Xpress files to a Linux box acting as an Apple file server :p several years ago. – LMC Jun 20 '18 at 02:10

How to add a custom MIME type and override a default extension pattern?

1 Answers1