Hi Wen! The Valorie's answer inspired me to look at the way Acrobat Reader could simply provide access directly to a given page without immediatly loading a whole PDF. This would mean that you would store the books using standard PDF technology. Only the DSpace bitstream access would have to be adapted to allow direct access.
This requires HTTP 1.1 (that most browsers and servers support) and the support of the GET byte-range directive in the application (Tomcat 6.0.19 and above from what I read). PDFs have to be "optimized" (made linear). So Tomcat 6.0.19 (or .20) is serving PDF files by ranges for direct references (not going through a servlet). For DSpace, one would have to modify the bitstream delivery servlet (reusing Tomcat DefaultServlet code) to support it also. This may be a nice contribution to DSpace. Some references: http://www.coneural.org/florian/papers/04_byteserving.php http://answers.oreilly.com/topic/577-h264-video-streamingseeking-via-java-servlet/ Let me know what you think! Christophe Dupriez http://www.destin.be Le 11/08/2010 18:57, Shixing Wen a écrit : > Hi All, > > I have a couple questions about how DSpace handles digital books. First of > all, as a typical book contains 200-400 pages, should each page be added as > a bitstream? If so, is there a tool in DSpace that allows users to "turn the > page" rather than go back to the item and click the next page? If all pages > should be compiled into one bitstream, the file size for a searchable PDF/A > will be pretty large, even after compression, and the Content Inline > Disposition Threshold in DSpace is set at 8mb, what negative outcome will it > result if we reset that Content Inline Disposition Threshold to 0 or > unlimited? > > Alternatively, should we break the book down by chapter and upload each > chapter as a bitstream? If so, is there an easy way for the user to go to > the next chapter? > > Thanks for your advice, > > Shixing > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Shixing Wen > Head of Technical Services > University of Minnesota Duluth Library > L282 > 416 Library Drive > Duluth, MN 55812 > > Email: [email protected] > Phone: 218-726-8498 > Fax: 218-726-8019 > > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by > > Make an app they can't live without > Enter the BlackBerry Developer Challenge > http://p.sf.net/sfu/RIM-dev2dev > _______________________________________________ > Dspace-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/dspace-general > > > ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Dspace-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspace-general
