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CONTENTdm Extensions Terry Reese 541-737-6384 [email protected] Slides: http://oregonstate.edu/~reeset/contentdm/presentation/2004_05_09.ppt Understanding the rules You have to work within CONTENTdm’s application framework, i.e.:

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Contentdm extensions l.jpg

CONTENTdm Extensions

Terry Reese

541-737-6384

[email protected]

Slides: http://oregonstate.edu/~reeset/contentdm/presentation/2004_05_09.ppt


Understanding the rules l.jpg
Understanding the rules

  • You have to work within CONTENTdm’s application framework, i.e.:

    • CONTENTdm’s indexes can only be easily accessed via an .exe in the CGI-BIN so the OAI is your friend

    • That nearly all data is stored in plain text files and are accessible via http/file level access

      • Examples:

        • Project Configuration Files: http://digitalcollections.library.oregonstate.edu/archives/index/etc/config.txt

        • Vocab. Files: http://digitalcollections.library.oregonstate.edu/archives/index/text_search/voc.creato

    • In general, all data not within a results grid can be easily customized using javascript


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Retrieving Data: OAI & the CONTENTdm API

  • Two primary methods for accessing collection data dynamically within CONTENTdm:

    • API

      • Example: queryget.exe

      • Usage Example: http://digitalcollections.library.oregonstate.edu/cgi-bin/queryget.exe?CISOROOT0=/archives&CISOROOT1=/fakecollection&CISOOP=all&CISOMAX=17000000&CISOSTART=1&CISOSORTBY=title&subjec=memorial+union


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Retrieving Data: OAI & the CONTENTdm API

  • Two primary methods for accessing collection data dynamically within CONTENTdm:

    • OAI

      • Retrieves all Dublin Core tagged Fields

      • Retrieves data as simple Dublin Core

      • Example:

        • http://digitalcollections.library.oregonstate.edu/cgi-bin/oai.exe?verb=ListRecords&metadataPrefix=oai_dc&set=archives


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Examples: E-Commerce Extension

  • E-commerce extension:

    • What it does:

      • Allows institutions to implement a shopping cart feature with CONTENTdm

      • Provides patrons with a printout receipt of their orders

      • Provides staff with an html encoded email with links into the CONTENTdm collection to eliminate confusion regarding staff requests

      • Provides a method to potentially allow online billing of documents

        • Method will vary from institution to institution based on their business offices rules and practices


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Examples: E-Commerce Extension

  • E-commerce extension:

    • How it works:

      • Modifications to the global.js script to:

        • Insert shopping cart buttons in the item & results windows

        • Add Cookie parsing and Packing functions

          • The script uses the same cookie as the My Favorites functionality, allowing the Shopping Cart to import data from the My Favorites list.

      • Creation of two php scripts:

        • mycart.php (handles the data retrieval submission form generation)

        • request.php (generates & emails this request – also provides the fork point for online payment if available)


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Examples: E-Commerce Extension

  • E-Commerce extension:

    • Data flow:

      • Patron clicks on shopping cart link to pack CISOPTR into the cookie.

      • Patron clicks on “order prints” link to generate the request form.

      • Request form (mycart.php) generates an OAI request for each item and extracts the necessary data required to generate the print/email request.

      • Patron enters data & submits data – receipt is generated and user is given one last opportunity to verify data.

      • Submits data – Email is sent to staff which fill the request.


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Examples: E-Commerce Extension

  • E-Commerce extension:

    • Example (Demo here):

      • http://digitalcollections.library.oregonstate.edu/bracero/


Examples rss generator l.jpg
Examples: RSS Generator

  • RSS Feed Generator

    • Probably the most widely used CONTENTdm extension in our library.

    • Used by:

      • Librarians to track individual collection or topical growth within collections.

      • Managers (like myself) as a review tool to keep track of items as they change and check resulting metadata.


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Examples: RSS Generator

  • RSS Feed Generator

    • How it works:

      • Uses OAI for data retrieval

        • OAI is called using date limiters that can be specified by the user

      • SAXON for XSLT parsing

        • This allows the OAI to be pre-processed to Qualified Dublin Core and then processed against a users processing instructions. Using XSLT, the user can:

          • Query items with specific keywords

          • Query items with specific creators/titles

          • Query items with a combination of criteria – XSLT step simply allows script to produce queries using a level of granularity that isn’t available in OAI.

      • RSS Feed reader to display results


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Examples: RSS Generator

  • RSS Feed Generator

    • Example:

      • Within Bloglines

        • Example

      • As a simple link

        • http://fluffy.library.oregonstate.edu/cgi-bin/harvester/harvester.pl?collection_server=digitalcollections.library.oregonstate.edu&collection_project=all&collection_options=rss&collection_wrapper=1&rss_time=14


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Things I’d like to see or am working on

  • An Open-Source Acquisitions client built in Java (so it can be run on Linux and customized for specific workflows

  • Open Source Multi-Site server solution

  • True OBDC driver to access CONTENTdm database natively within scripts

  • More folks developing and sharing their development.


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Going Further: Embedding Rights Management

  • Rights management example – how it works:

    • Generate a wrapper .exe for the CONTENTdm display exe.

    • Embed rights management metadata into individual items

    • Have the wrapper pre-process requests on the server, pulling data from CONTENTdm using the OAI.

      Example screenshots:

      • Metadata (http://oregonstate.edu/~reeset/contentdm/screens/rights1.png)

      • Display (http://oregonstate.edu/~reeset/contentdm/screens/rights2.png)

        For more information, feel free to contact me.


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