On 10/20/2010 01:57 AM, [Ricardo Rodriguez] eBioTIC. wrote:

Hi,

[Ricardo Rodriguez] eBioTIC. wrote:

...

Hi!

Please, do we have methods to extract meta data from attached files in formats like PDF, TIFF, DOC,...? Availability of such a data some times relies on user input, but other times, like size and channels information in TIFF files, are built in data that could be/are really useful for designing scripts to show pictures.

Thanks!

Ricardo

There's nothing available in the standard XWiki core. You can write your own module that handles metadata extraction, using some external libraries. For the moment, I don't think that this is something important for the core, so unless someone provides a patch (or sponsors one of the developers to do it), it shouldn't be implemented any time soon.

http://tinyurl.com/2v3gdj5

http://dev.xwiki.org/xwiki/bin/view/Drafts/MetadataLuceneTutorial

To the best of my understanding this message is not the same what I was talking about in my brief message, but could it somehow related? I'm of course extremely far from Jean-Vivien skills! But, could both topics be somehow related? adding/indexing metatada and indexing already existing metadata in attached documents? Thanks!

It is related in the sense that it can index this metadata, if obtained from another module, so that you can query it using the Lucene plugin. For example, once you get the dimensions of a tiff image, you can store this information as fields of the indexed item, and then query all images with a width between 600 and 800 pixels. -- Sergiu Dumitriu http://purl.org/net/sergiu/