Hmm, i modified the Content and MIMEUtil classes to use the new .detect API in
NUTCH-1230. I was under the impression all deprecated calls were replaced.
On Wednesday 29 February 2012 14:57:46 Lewis John Mcgibbney wrote:
> Hi,
>
> In the process of addressing NUTCH-1273 [0] I ran into a small problem with
> some Tika classes.
> The patch I attached to the issue currently upgrades usage of external
> dependencies bar Tika. You will therefore still see javac flagging up
> problems within o.a.n.util.MimeUtil#autoResolveContentType [1]
>
> // if returned null, or if it's the default type then try url resolution
> 168 if (type == null 169 || (type != null &&
> type.getName().equals(MimeTypes.OCTET_STREAM))) { 170 // If no mime-type
> header, or cannot find a corresponding registered 171 // mime-type, then
> guess a mime-type from the url pattern 172 type =
> this.mimeTypes.getMimeType(url) != null ? this.mimeTypes 173
> .getMimeType(url)
>
> : type; 174 }
>
> Initially I tried changing the above to
>
> // if returned null, or if it's the default type then try url
> resolution if (type == null
>
> || (type != null && type.getName().equals(
>
> MimeTypes.OCTET_STREAM))) {
>
> // If no mime-type header, or cannot find a corresponding registered
> // mime-type, then guess a mime-type from the url pattern
> String mt = tika.detect(url);
>
> type = mt != null ? mt : type;
> }
>
> However after compiling I get
>
> [javac] MimeUtil.java:165: incompatible types
> [javac] found :
> java.lang.Object&java.io.Serializable&java.lang.Comparable<? extends
> java.lang.Object&java.io.Serializable&java.lang.Comparable<?>>
> [javac] required: org.apache.tika.mime.MimeType
> [javac] type = mt != null ? mt : type;
> [javac] ^
>
> This is because Tika.detect(URL) returns the mimetype as a String and the
> detectors themselves return a MediaType.
>
> I went to user@tika and the feedback I got was
>
> * Switch your code to use a mimetype String
> * Switch your code to use MediaType rather than MimeType, and call
> DefaultDetector directly (rather than using the Tika facade class)
> * If you get back a String (not null) for the mimetype, create a MimeType
> object for it.
>
> So I suppose my question is what do we want too do?
>
> Thanks
>
> [0]
> https://issues.apache.org/jira/browse/NUTCH-1273<https://issues.apache.org
> /jira/browse/NUTCH-1273> [1]
> http://svn.apache.org/viewvc/nutch/trunk/src/java/org/apache/nutch/util/Mim
> eUtil.java?view=markup
--
Markus Jelsma - CTO - Openindex
