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Posted to dev@tika.apache.org by Jonathan Koren <jo...@soe.ucsc.edu> on 2009/06/19 01:46:19 UTC
metadata and package files
I'm parsing a package file, let's say foo.tar.gz. AutoDetectParser
does the right thing in the sense
that returns an XHTML file that contains entries for each file in the
tar file which is in the gzip file. However, the metadata object
returned by top AutoDetectParser contains only the metadata for the
outermost package, i.e. the gzip. Obviously the metadata for each
file within the tar exists, otherwise PackageParser wouldn't be able
to use AutoDetectParser to correctly chain down within the file.
(i.e. Somewhere foo.tar/foo.pdf is tagged as application/pdf to enable
PDFParser to correctly convert it to text.)
Examining the XHTML returned, reveals nothing. It's just a bunch of
<div class="package-entry">s delineating the different entries in the
TAR. Is there a way to get the metadata for each entry within a
package file, and I'm just missing it? If not, it seems like
PackageParser could be modified to spit out a bunch of DIVs of the
form: <div class="metadata" name="METADATA-KEY">METADATA-VALUE</div>
--
Jonathan Koren
jonathan@soe.ucsc.edu
http://www.soe.ucsc.edu/~jonathan/
Re: metadata and package files
Posted by Jukka Zitting <ju...@gmail.com>.
Hi,
On Fri, Jun 19, 2009 at 1:46 AM, Jonathan Koren<jo...@soe.ucsc.edu> wrote:
> Is there a way to get the metadata for each entry within a package file,
> and I'm just missing it?
No, it's currently not possible. The rationale for that is the same
why we don't include the top-level metadata in the XHTML output, i.e.
metadata is not really a part of the normal text content of the
document (it's not rendered by default, etc.).
> If not, it seems like PackageParser could be modified
> to spit out a bunch of DIVs of the form: <div class="metadata"
> name="METADATA-KEY">METADATA-VALUE</div>
That would confuse the distinction between metadata and normal
document text, especially when just the character stream is extracted.
If you need access to the entry metadata, it would probably be better
to expose it as attributes of the package-entry div.
BR,
Jukka Zitting
metadata and package files
Posted by Jonathan Koren <jo...@soe.ucsc.edu>.
I'm parsing a package file, let's say foo.tar.gz. AutoDetectParser
does the right thing in the sense
that returns an XHTML file that contains entries for each file in the
tar file which is in the gzip file. However, the metadata object
returned by top AutoDetectParser contains only the metadata for the
outermost package, i.e. the gzip. Obviously the metadata for each
file within the tar exists, otherwise PackageParser wouldn't be able
to use AutoDetectParser to correctly chain down within the file.
(i.e. Somewhere foo.tar/foo.pdf is tagged as application/pdf to enable
PDFParser to correctly convert it to text.)
Examining the XHTML returned, reveals nothing. It's just a bunch of
<div class="package-entry">s delineating the different entries in the
TAR. Is there a way to get the metadata for each entry within a
package file, and I'm just missing it? If not, it seems like
PackageParser could be modified to spit out a bunch of DIVs of the
form: <div class="metadata" name="METADATA-KEY">METADATA-VALUE</div>
--
Jonathan Koren
jonathan@soe.ucsc.edu
http://www.soe.ucsc.edu/~jonathan/