(Apologies for the length of this message. I want to be sure I include
all the relevant information)
SUMMARY
I am trying to implement XPDF-based media filters in a DSpace 1.7.2
repository. I have installed the XPDF tool suite, and I've located the
jai_imageio and jai_core JAR files and installed them in my local Maven
repository. I have built DSpace with the "-Pxpdf-mediafilter-support"
option. However, "dspace filter-media" fails when attempting to filter
a PDF in our repository:
ERROR filtering, skipping bitstream:
Item Handle: 192837465/41
Bundle Name: ORIGINAL
File Size: 87931
Checksum: 9ebad8ee9bc7d35238afadffb391531b (MD5)
Asset Store: 0
java.io.IOException: Unknown failure while transforming file to preview:
no image produced.
java.io.IOException: Unknown failure while transforming file to preview:
no image produced.
at
org.dspace.app.mediafilter.XPDF2Thumbnail.getDestinationStream(XPDF2Thumbnail.java:274)
at
org.dspace.app.mediafilter.MediaFilterManager.processBitstream(MediaFilterManager.java:737)
at
org.dspace.app.mediafilter.MediaFilterManager.filterBitstream(MediaFilterManager.java:561)
at
org.dspace.app.mediafilter.MediaFilterManager.filterItem(MediaFilterManager.java:511)
at
org.dspace.app.mediafilter.MediaFilterManager.applyFiltersItem(MediaFilterManager.java:479)
at
org.dspace.app.mediafilter.MediaFilterManager.applyFiltersAllItems(MediaFilterManager.java:414)
at
org.dspace.app.mediafilter.MediaFilterManager.main(MediaFilterManager.java:333)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.dspace.app.launcher.ScriptLauncher.main(ScriptLauncher.java:183)
I have searched the DSpace-tech archives thoroughly and have not found a
solution, so I'm starting a new topic hoping to find the answer. See
below for details.
* DSpace*
I'm running DSpace 1.7.2 on RHEL5 in a VMWare virtual machine. Since
this is a proof-of-concept repository, I'm running everything under my
own user account (including Tomcat).
* XPDF *
I'm following the directions documented in the DSPace wiki here:
https://wiki.duraspace.org/display/DSDOC/Configuration#Configuration-XPDFFilter.
I downloaded precompiled binaries for XPDF v3.02pl6 and installed them
without problems. I have verified that all the command-line tools work
correctly.
* Java Advanced Imaging libraries *
Since the documented link to the "jai_imageio" library is broken, I
searched for the JAR file and found
"jai_imageio-1_1-lib-linux-i586-jar.zip" here:
http://download.java.net/media/jai-imageio/builds/release/1.1/. I
successfully installed it in my local Maven repository.
I found "jai_core" version 1.1.3-alpha here:
http://www.findjar.com/jar/geoserver/jai/jars/jai-core-1.1.3-alpha.jar.html.
I successfully installed it in my local Maven repository as well.
* Maven dependencies *
I edited "[dspace-source]/dspace/pom.xml" so it would correctly resolve
the dependencies to the versions of the libraries I downloaded:
<profile>
<id>xpdf-mediafilter-support</id>
<activation>
<activeByDefault>false</activeByDefault>
</activation>
<dependencies>
<dependency>
<groupId>com.sun.media</groupId>
<artifactId>jai_imageio</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>javax.media</groupId>
<artifactId>jai_core</artifactId>
<version>1.1.3-alpha</version>
</dependency>
</dependencies>
</profile>
* DSpace configuration *
I edited my "[dspace-source]/config/dspace.cfg" to make the
configuration changes required to use XPDF:
# maximum width and height of generated thumbnails
thumbnail.maxwidth = 80
thumbnail.maxheight = 80
# XPDF Media Filter executables
xpdf.path.pdftotext = /home/sthursto/devtools/xpdf-3.02pl6-linux/pdftotext
xpdf.path.pdftoppm = /home/sthursto/devtools/xpdf-3.02pl6-linux/pdftoppm
xpdf.path.pdfinfo = /home/sthursto/devtools/xpdf-3.02pl6-linux/pdfinfo
plugin.named.org.dspace.app.mediafilter.FormatFilter = \
org.dspace.app.mediafilter.XPDF2Text = PDF Text Extractor, \
org.dspace.app.mediafilter.XPDF2Thumbnail = PDF Thumbnail, \
org.dspace.app.mediafilter.HTMLFilter = HTML Text Extractor, \
org.dspace.app.mediafilter.WordFilter = Word Text Extractor, \
org.dspace.app.mediafilter.PowerPointFilter = PowerPoint Text
Extractor, \
org.dspace.app.mediafilter.JPEGFilter = JPEG Thumbnail, \
org.dspace.app.mediafilter.BrandedPreviewJPEGFilter = Branded Preview
JPEG
filter.org.dspace.app.mediafilter.XPDF2Text.inputFormats = Adobe PDF
filter.org.dspace.app.mediafilter.XPDF2Thumbnail.inputFormats = Adobe PDF
filter.org.dspace.app.mediafilter.HTMLFilter.inputFormats = HTML, Text
filter.org.dspace.app.mediafilter.WordFilter.inputFormats = Microsoft Word
filter.org.dspace.app.mediafilter.PowerPointFilter.inputFormats =
Microsoft Powerpoint, Microsoft Powerpoint XML
filter.org.dspace.app.mediafilter.JPEGFilter.inputFormats = BMP, GIF,
JPEG, image/png
filter.org.dspace.app.mediafilter.BrandedPreviewJPEGFilter.inputFormats
= BMP, GIF, JPEG, image/png
* Build and update DSpace *
I build and updated DSpace as follows:
cd [dspace-source]/dspace
mvn -Pxpdf-mediafilter-support -Ddb.name=oracle package
cd target/dspace-1.7.2-build.dir
ant update
I restarted Tomcat and tried running the media filters, but the job
failed with the error documented above.
FURTHER DEBUG
1. I tried enabling DEBUG logging in DSpace, but no useful messages were
produced when I ran "dspace filter-media":
2011-07-15 12:03:54,633 INFO org.dspace.core.ConfigurationManager @
Loading from classloader: file:/home/sthursto/dspace/config/dspace.cfg
2011-07-15 12:03:54,657 INFO org.dspace.core.ConfigurationManager @
Using dspace provided log configuration (log.init.config)
2011-07-15 12:03:54,657 INFO org.dspace.core.ConfigurationManager @
Loading: /home/sthursto/dspace/config/log4j.properties
2011-07-15 12:03:55,594 DEBUG net.sf.ehcache.config.ConfigurationFactory
@ Configuring ehcache from InputStream
2011-07-15 12:03:55,675 DEBUG net.sf.ehcache.config.BeanHandler @
Ignoring ehcache attribute xmlns:xsi
2011-07-15 12:03:55,675 DEBUG net.sf.ehcache.config.BeanHandler @
Ignoring ehcache attribute xsi:noNamespaceSchemaLocation
2011-07-15 12:03:55,676 DEBUG
net.sf.ehcache.config.DiskStoreConfiguration @ Disk Store Path: /tmp
2011-07-15 12:03:55,684 DEBUG net.sf.ehcache.config.ConfigurationHelper
@ No CacheManagerEventListenerFactory class specified. Skipping...
2011-07-15 12:03:55,692 DEBUG net.sf.ehcache.config.ConfigurationHelper
@ No BootstrapCacheLoaderFactory class specified. Skipping...
2011-07-15 12:03:55,692 DEBUG net.sf.ehcache.config.ConfigurationHelper
@ No CacheExceptionHandlerFactory class specified. Skipping...
2011-07-15 12:03:55,762 DEBUG net.sf.ehcache.util.UpdateChecker @
Checking for update...
2011-07-15 12:03:56,262 INFO net.sf.ehcache.util.UpdateChecker @ New
update(s) found: 2.4.3 [2]
2011-07-15 12:03:56,825 INFO org.dspace.search.DSIndexer @ Writing
Collection: 192837465/2 to Index
2011-07-15 12:03:56,862 INFO org.dspace.search.DSIndexer @ Writing
Community: 192837465/1 to Index
2011-07-15 12:03:57,104 DEBUG net.sf.ehcache.CacheManager @ CacheManager
already shutdown
2011-07-15 12:03:57,105 ERROR org.dspace.kernel.DSpaceKernelManager @
WARN Failed to unregister the MBean:
org.dspace:name=abc3e6e6-c56a-402d-86d9-d260ae182226,type=DSpaceKernel
(I don't see any mention of running XPDF tools)
2. I found a post in the archives that said there was a missing
dependency in "[dspace-source]/dspace-api/pom.xml", so I added it and
rebuild DSpace:
<!-- Added to resolve XPDF filter errors -->
<dependency>
<groupId>com.sun.media</groupId>
<artifactId>jai_imageio</artifactId>
<version>1.1</version>
</dependency>
This had no effect whatsoever.
So, now I seem to be stuck. I'd appreciate any suggestions you could offer.
--
Scott Thurston [email protected]
NOAA / NGDC / WDC http://www.ngdc.noaa.gov/
Marine Geology& Geophysics 303-497-4411 (phone)
325 Broadway E/GC3 303-497-6513 (fax)
Boulder, CO 80305-3337
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