| [smila-dev] PDF conversion. |
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Hi, is there any component already
available and integrated that supports PDF document conversion to be coupled with a Web-crawler!? Kind Regards, Bogdan Sacaleanu. From:
daniel.stucky@xxxxxxxxxxxxx [mailto:daniel.stucky@xxxxxxxxxxxxx] Hi Bogdan, I have never tried
this out. However, in theory
it should be possible to use Tomcat in SMILA as any standalone Tomcat server.
There may be certain jars missing so you may have to add additional bundles to
solve these missing dependencies. You may also have to solve some classloading
issues (e.g. make use of Eclipse-BuddyPolicy) But this is all wild
guessing. You will have to try it on your own and see how far you get. Good luck. Daniel Von:
smila-dev-bounces@xxxxxxxxxxx [mailto:smila-dev-bounces@xxxxxxxxxxx] Im Auftrag von Bogdan Eugen Sacaleanu
Hi, is it possible to deploy
a Web Application based on Java Server Pages (JSP) on the Tomcat in SMILA!? Kind Regards,
Bogdan. ####################################################################### Bogdan
Eugen Sacaleanu, Researcher & Software Engineer LT-Lab DFKI Stuhlsatzenhausweg
3 66123
Saarbruecken, Germany bogdan@xxxxxxx Phone:
+49 681 302 5261 http://www.dfki.de/~bogdan Fax :
+49 681 302 5338 ####################################################################### Deutsches
Forschungszentrum fuer Kuenstliche Intelligenz GmbH Trippstadter Strasse 122, D-67663
Kaiserslautern, Germany Geschaeftsfuehrung: Prof. Dr. Dr.
h.c. mult. Wolfgang Wahlster (Vorsitzender) Dr. Walter´Olthoff Vorsitzender
des Aufsichtsrats: Prof. Dr. h.c.
Hans A. Aukes Amtsgericht
Kaiserslautern, HRB 2313 ####################################################################### From:
daniel.stucky@xxxxxxxxxxxxx [mailto:daniel.stucky@xxxxxxxxxxxxx] Hi Bogdan, it is possible to
access the JMX interface of the CrawlerController programmatically, so you can
start/stop crawls. See bundle org.eclipse.smila.management.jmx.client for
exmaples. Another way would be to get a reference to the CrawlerController OSGi
service and work directly on that. The later can only be done if you are in the
same process. As SMILA is a
framework, you are free to implement a pipelet that uses the WebCrawler to
start a crawl. Of course a crawler run would lead to an asynchronous execution
of another pipeline, and you would have to wait in your calling pipeline for
the other to finish (to have the record added to Lucene) and only then you
could continue and search in the Lucene index. Lots of dependencies and
potential errors. However, SMILA was
not designed to be used in this way. I would recommend that you implement a
separate pipelet that connects via HTTP to Google, executes a search, parses
the result page and creates the record objects (you can also split the
functionality into multiple pipelets for better reuse). This would all be run
in SearchPipeline. A Crawler is always
coupled with a BPEL pipeline. All records a Crawler produces are consumed by
the configured BPEL pipeline. This is configured in the
QueueWorkerListenerConfig.xml. Currenntly there are two kinds of Pipelets,
Simple- and SearchPipelets. SearchPipelets can only be used in search pipelines,
SimplePipelets can be used in any pipeline. You cannot use a search pipeline as
a consumer for Crawler output. Check out the wiki
for more information on Pipelets and Pipelines. Bye, Daniel Von:
smila-dev-bounces@xxxxxxxxxxx [mailto:smila-dev-bounces@xxxxxxxxxxx] Im Auftrag von Bogdan Eugen Sacaleanu
Hi Daniel, thank you for your prompt
reply. My scenario requires synchronous calls of the mentioned components, so I suppose I should go
for the proposed A option. That means that I would not make use of any of the connectivity components
from SMILA, would I!?
Regarding the B option, how is the indexing process to be started
programmatically and be coupled with a parsing BPEL
pipeline!? Wouldn’t be possible to add the search pipeline shipped with
SMILA to the parsing pipeline!? Kind regards,
Bogdan. From:
daniel.stucky@xxxxxxxxxxxxx [mailto:daniel.stucky@xxxxxxxxxxxxx] Hi Bogdan, thanks for your
interest in SMILA. Currently it is not
possible to use any Crawler or Agent from within a BPEL pipeline. The solution to your
question depends on whether your scenario is interactive (1-5 synchronous) or
not (1-4 and 5 asynchronous). A)
Synchronous: In this case you would execute a BPEL pipeline just like a
search pipeline. In that pipeline you would have to use Pipelets to
connect to Google, parse the result page and fill the Lucene Index. These
pipelets have to be implemented by you, they are currently not part of SMILA
(except for the Lucene Index Pipelet). After that you would call the
SearchPipelet on the Lucene Index and return the results, all in the same
Pipeline. B)
Asynchronous: If requesting Google and storing the results in Lucene and the
actual search in Lucene are independent processes (one triggered on a regular
basis, the other by users) then you could set up this regular indexing process
using the WebCrawler for accessing Google and a BPEL pipeline for parsing the
results and adding the records to Lucene index. For searching you could
use the standard search pipeline shipped with SMILA. Something General: Records are objects
to transport data in SMILA. Speaking of option B) the WebCrawler would create
one record containing the Google search result page. In the BPEL pipeline one
would use a pipelet to parse the result page and create N records from it (N
being the number of results per page). The pipelet interface allows for an
array of recordIDs as in and out parameters. Usually the parameters are equal
(n:n) but they can be, as in your case 1:n , or n:1 or n:m depending on the
data and the pipelets functionality. I hope this helps! Bye, Daniel Von:
smila-dev-bounces@xxxxxxxxxxx [mailto:smila-dev-bounces@xxxxxxxxxxx] Im Auftrag von Bogdan Eugen Sacaleanu
Hi, I would like to use Smila for the following purpose:
What would be the best setting of Smila components
for this goal!? Could I use the WebCrawler for (1.+ 2.) embedded in a BPEL pipeline!? Should I
create the records (3.) within the WebCrawler or should I do that within the Connectivity component
using the Router!? Kind regards, Bogdan. ####################################################################### Bogdan Eugen Sacaleanu, Researcher
& Software Engineer LT-Lab DFKI Stuhlsatzenhausweg 3 66123 Saarbruecken, Germany bogdan@xxxxxxx Phone: +49 681 302 5261 http://www.dfki.de/~bogdan Fax : +49 681 302 5338 ####################################################################### Deutsches Forschungszentrum fuer Kuenstliche
Intelligenz GmbH Trippstadter Strasse 122, D-67663 Kaiserslautern, Germany Geschaeftsfuehrung: Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster (Vorsitzender)
Dr. Walter´Olthoff Vorsitzender des Aufsichtsrats: Prof. Dr. h.c. Hans A. Aukes Amtsgericht Kaiserslautern, HRB 2313 ####################################################################### |