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Tag Archives: programming

JPEG2000 to Zoomify Code4Lib Lightning Talk Video Now Available

Thanks, Noel, and everyone else who made the video editions of Code4Lib 2008 presentations possible. I just had a chance to notice that the video from my JPEG2000 to Zoomify Shim lightning talk was online:

Some updates since the post and the presentation were first done. The code that exists in the source code repository now was refactored to use JJ2000 as part of the Sun ImageIO package. We were seeing non-threadsafe problems with Kakadu and thought that using the multithreaded ImageIO package would help. Unfortunately, even with extensive caching, it did not. My next task is to bring Kakadu back into the picture using the threadsafe JNI implementation that is part of the ImageIO-ext project to see if that helps.

This is a preview of JPEG2000 to Zoomify Code4Lib Lightning Talk Video Now Available. Read the full post (157 words, 38 seconds estimated reading time)
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2008 05 15 Comments (0)

PocketModMac: MacOSX PocketMod Generator Via Print Dialog

This one goes out to all of the MacOS X users out there. (For the rest of you, why aren’t you switching?) Perhaps you have seen PocketMod — the origami-like manipulation of an 8 1/2″ by 11″ piece of paper into an 8-page booklet.

PocketMod example pictureExample PocketMod, courtesy of the Boston Globe.

Touted as a way to “get back to the basics” using analog media over digital media, it is a scheme by which you can transform pages of text into a pocket-sized form for carrying around. Many use it as a way to synchronize their digital to-do lists with the analog world, while others use it document shortcuts and cheat-sheets in a convenient form.

This is a preview of PocketModMac: MacOSX PocketMod Generator Via Print Dialog. Read the full post (638 words, 6 images, 2:33 minutes estimated reading time)
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2007 08 09 Comments (12)

OhioLINK Position available: Systems Developer

The Ohio Library and Information Network (OhioLINK) is seeking an energetic, creative individual to participate in the creation and maintenance of our internationally recognized set of digital library and electronic information services. OhioLINK serves the higher education population in the State of Ohio with service to over 85 colleges and universities.

The position requires a four-year degree in Computer Science, or a graduate degree in Information or Library Science, or equivalent technical experience. The candidate should have strong programming skills including experience with Perl and Java, and should be comfortable working in a Unix/Linux environment with open source development tools. Experience with the following is highly desired: Apache Tomcat, JSP, XML, XSLT, SQL, Eclipse IDE. Experience with the following is desirable: Cocoon, DSpace, Fedora Digital Repository, aspect-oriented programming.

This is a preview of OhioLINK Position available: Systems Developer. Read the full post (155 words, 37 seconds estimated reading time)
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2007 07 27 Comments (0)

“Show Me The Code!!!” -or- It Isn’t Open Source Until We Can See the Source

Show Me the Money! There are days that I feel like Tom Cruise. No, I have no idea what it is like to be married to Nicole Kidman or Katie Holmes and I don’t have the secrets of Scientology. Let me rephrase: there are days that I feel like Jerry Macguire, the character Tom Cruise played in the movie by the same name. Have you seen it? Very early in the movie there is a scene where Jerry’s life as a top-tier sports agent is crumbling. He is on the phone with what turns out to be his last client — desperately trying to keep his business. The athlete (Cuba Gooding Jr. — I have no idea what it is like to be him either) gets Jerry to scream “Show Me The Money!” into the phone as a precondition for remaining his agent. In that vein, here is what I’m screaming into this PowerBook. (Imagine now that I am dancing around the room and standing on top of desks — not really a stretch for those that have seen my presentation style, I’ll admit.)

This is a preview of “Show Me The Code!!!” -or- It Isn’t Open Source Until We Can See the Source. Read the full post (658 words, 1 image, 2:38 minutes estimated reading time)
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2007 07 26 Comments (5)

Introducing “Planet Library SOA”

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Resources tagged with ‘librarysoa‘ in del.icio.us will also appear in the aggregator.

Mechanics


Planet Library SOA is created using the Planet software — a tool for aggregating and republishing RSS feeds. In the case where the contributor runs the WordPress software, Planet Library SOA subscribes to the RSS feed of a category or tag from that blog. In the case where the contributor runs the Movable Type software, a Yahoo! Pipe is used to extract SOA-related postings from the blog’s general feed. (For example, see this Yahoo! Pipe for Lorcan Dempsey’s blog. My gratitude goes out to Stephen Anthony for his example on how to get Yahoo! Pipes to extract content from feeds and Ryan Gallagher for a workaround to a bug in Pipes.)

Permanent link to this post (143 words, 34 seconds estimated reading time)
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2007 06 19 Comments (2)

Presentation Summary: “MPTStore: Implementing a fast, scalable, and stable RDBMS-backed triplestore for Fedora and the NSDL”

Chris Wilper gave this presentation on behalf of the work that he and Aaron Birkland did to improve the performance of the Fedora Resource Index.

Version 2.0 of the Fedora digital object repository software added a feature called the Resource Index (RI). Based on Resource Description Framework (RDF) triples, the RI provided quick access to relationships between objects as well as to the descriptive elements of the object itself. After about two years of use using the Kowari software, the RI has pointed to a number of challenges for “triplestores”: scalability (few triplestores are designed for greater than 100 million triples); performance; and stability (frequent “rebuilds”).

This is a preview of Presentation Summary: “MPTStore: Implementing a fast, scalable, and stable RDBMS-backed triplestore for Fedora and the NSDL”. Read the full post (594 words, 2:23 minutes estimated reading time)
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2007 01 29 Comments (5)

Scripted Searches for Java Code in Popular Source Code Search Engines

Sometimes the best way to solve a programming problem is to see how others have done the same thing. When that happens, having immediate access to the various search engines helps get you back on track quickly. Here are OpenSearch plug-ins (suitable for Firefox and MSIE7) that will search the Java code in five of the more popular source code search engines.

This is a preview of Scripted Searches for Java Code in Popular Source Code Search Engines. Read the full post (536 words, 2:09 minutes estimated reading time)
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2007 01 19 Comments (4)

Getting Around Drupal’s Prohibition of @ Characters in User Ids

A while back we created an LDAP directory to consolidate account information for various back-room services, and when we created it we decided to use the individual’s e-mail address as the account identifier (uid in LDAP-speak). It seemed like the logical thing to do — it is something that the user knows and it is a cheap and easy way to assume that the account identifiers will be unique. This is not uncommon for many internet services, of course.

This is a preview of Getting Around Drupal’s Prohibition of @ Characters in User Ids. Read the full post (515 words, 2:04 minutes estimated reading time)
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2007 01 19 Comments (0)

Building an Institutional Repository Interface Using EJB3 and JBoss Seam

This tour is designed to show the overall architecture of a FEDORA digital object repository application within the JBoss Seam framework while at the same time pointing out individual design decisions and extension points that are specific to the Ohio Digital Resource Commons application. Geared towards software developers, a familiarity with Java Servlet programming is assumed, although not required. Knowledge of JBoss Seam, Hibernate/Java Persistence API, EJB3 and Java EE would be helpful but not required; brief explanations of core concepts of these technologies are included in this tour.

The tour is based on revision 709 of /drc/trunk and was last updated on 18-Jan-2007.

This is a preview of Building an Institutional Repository Interface Using EJB3 and JBoss Seam. Read the full post (1969 words, 7:53 minutes estimated reading time)
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2007 01 18 Comments (2)

Java Application for Batch Processing FEDORA Objects

We had a need today to transform an XML file with a custom DTD into Dublin Core; the custom XML file is a datastream in our FEDORA repository and we want to put the Dublin Core XML file back into the FEDORA object as the DC datastream. This took a slew of technologies and techniques: reading a datastream out of the FEDORA repository using API-A, parsing XML documents using the Java DOM library, creating a new document with the correct namespaces using Java DOM, and modifying the DC datastream in the repository using API-M.

This is a preview of Java Application for Batch Processing FEDORA Objects. Read the full post (129 words, 31 seconds estimated reading time)
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2006 12 13 Comments (1)
From the Disruptive Library Technology Jester (http://dltj.org/), printed on Friday the 12th of March 2010 at 8:25:30 AM EST (-0500). The URL to this page is http://dltj.org/tag/programming/

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