[smila-dev] AW: [Aperture-devel] Aperture bundlization for SMILA

[<Daniel.Stucky@xxxxxxxxxxx>]

Hi all,

with the fixes provided by Antoni I managed to get the "bundelized"
aperture to run in Smila. 

In Smila we should refactor our two existing aperture integration
bundles into just one and also clean up the code and implement a
ProcessingService instead of a pipelet (Aperture OSGi services are used
now which "cries" to use DS)

Here is a list of all the bundles (and their License) required to run
"bundelized" aperture in Smila:

com.drew.metadata_2.4.0.jar (Public Domain)
javax.activation_1.1.1.jar (CDDL)
javax.mail_1.4.1.jar (CDDL)
jcl104-over-slf4j-1.5.0.jar (MIT)
openrdf-sesame-2.2.1-onejar-osgi.jar (BSD)
org.apache.poi_3.2.0.jar (Apache License 2.0)
org.bouncycastle.bcmail_1.32.0.jar (MIT)
org.bouncycastle.bcprovider_1.32.0.jar (MIT)
org.fontbox_0.2.0.jar (BSD)
org.htmlparser_1.6.0.jar (CPL 1.0)
org.jempbox.xmp_0.2.0.jar (BSD)
org.pdfbox_0.7.4.jar (BSD)
org.semanticdesktop.aperture.safe_1.2.0.jar (BSD)
org.semanticdesktop.aperture_1.2.0.jar (BSD)
rdf2go.api-4.7.0.jar (BSD)
rdf2go.impl.sesame22-4.7.0.jar (BSD)
slf4j-api-1.5.0.jar (MIT)
slf4j-jdk14-1.5.0.jar (MIT)
com.sun.media.jai (Sun Binary Code License Agreement) required by
PDFBox. Did not publish this bundle yet, as we can't use it in Smila.

License wise, the bundles are all EPL compatible except for
com.sun.media.jai.

1) bundle org.semanticdesktop.aperture.safe_1.2.0.jar imports packages
from org.pdfbox_0.7.4.jar which in turn imports packages from
com.sun.media.jai. As the latter can't be provided by Smila (because of
LGPL) the other two bundles cannot be started if these packages are
missing!!! So we should separate the Extractors relying on PDFBox from
the other Extractors (putting them in  their own bundle).
It seems to be a good approach in general, to provide the Extractors not
in one bundle but on a "bundle per extractor" basis. Even though the
Licenses of the other 3rd party bundles are OK, this does NOT mean that
the bundles will pass eclipse legal process ! One common problem is code
provenance. So if all Extractors remain in one bundle
org.semanticdesktop.aperture.safe_1.2.0.jar and just one 3rd party
bundle used by one Extractor does not pass it's CQ, Aperture can't be
used in Smila until this CQ is resolved or the dependencies are removed.
Finer grained bundles will allow us to use Aperture with a subset of
available Extractors. Adding additional extractors when their CQs are
completed.

2) bundle org.semanticdesktop.aperture_1.2.0.jar contains 2 jar files
	+ aduna-commons-xml.2.0.jar
	+ applewrapper-0.2.jar
  We need to create CQs for both jars and according to
http://aperture.wiki.sourceforge.net/Dependencies applewrapper-0.2.jar
is LGPL !? Are there any alternatives ?

3) do we need all those bundles for just mimetype detection and
extractors ? (e.g. sesame ?) Or could some dependencies be removed,
perhaps also by finer grained bundles ?



Bye,
Daniel