[OAI-implementers] Extensible Repository Resource Locators (E RRoLs) Service

[Young,Jeff]

I believe I've been able to work around the security problems IE was having
with the ERRoL service (http://purl.org/oai/). I also "fixed" the Netscape
display problems by rendering the results into HTML on the server. I would
be grateful if people reported any other problems they have with this
service. For example, I'm told that the Opera browser has problem, so I
added it to my to-do list.

Here's an interesting fact. IE has "security issues" with performing an HTTP
SC_MOVED_TEMPORARILY (result code 302) to a document with ContentType
"text/xml". Sometimes it works, sometimes it doesn't. I was able to get
around this by setting the ContentType to "text/html" even when returning
XML responses. This seems to work fine with IE and Netscape. If you find
that other clients don't like this, I can tighten it down some. 

BTW, this effect will apply to the PURL server as well if you create PURLs
to XML documents. There's not much that can be done to fix this, though,
because the PURL server doesn't have control of the ContentType of the
target the way I do in the ERRoL responses.

There is still room for improvement, so comments and suggestions are
welcome.

Jeff

>  -----Original Message-----
>  From: Young,Jeff 
>  Sent: Tuesday, October 28, 2003 2:31 PM
>  To: Young,Jeff; OAI-implementers (E-mail);
>  'openarchives@openarchives.org'
>  Cc: 'thabing@uiuc.edu'; 'Andy Powell'; Hickey,Thom
>  Subject: RE: [OAI-implementers] Extensible Repository 
>  Resource Locators
>  (ERRoLs) Service
>  
>  
>  Sorry if you are having trouble getting this service to work 
>  properly. As a web service, there should be no problems, but 
>  I'm told that browsers are having trouble applying the XSLT 
>  stylesheet to the XML response. Turning on cross-domain 
>  browsing in IE may help, but that's not really an acceptable 
>  solution. I should have it fixed soon.
>  
>  Jeff
>  
>  >  -----Original Message-----
>  >  From: Young,Jeff [mailto:jyoung@oclc.org]
>  >  Sent: Tuesday, October 28, 2003 11:32 AM
>  >  To: OAI-implementers (E-mail); 'openarchives@openarchives.org'
>  >  Cc: 'thabing@uiuc.edu'; 'Andy Powell'; Hickey,Thom
>  >  Subject: [OAI-implementers] Extensible Repository 
>  Resource Locators
>  >  (ERRoLs) Service
>  >  
>  >  
>  >  I am please to announce the official release of the new Extensible
>  >  Repository Resource Locators (ERRoLs) Service for resolving 
>  >  OAI identifiers
>  >  in various ways. The ERRoL project page is at
>  >  http://www.oclc.org/research/projects/oairesolver/default.htm.
>  >  
>  >  This service can work with any repository registered in the 
>  >  "OAI Registry at
>  >  UIUC" that Tom Habing announced recently
>  >  (http://gita.grainger.uiuc.edu/registry/). 
>  >  
>  >  For oai-identifiers, the Core ERRoL pattern is this:
>  >  
>  >  "http://purl.org/oai/" + <oai-identifier>
>  >  
>  >  Below is a example of a Core ERRoL. This resolves to a list 
>  >  of Extended
>  >  ERRoLs that will return the various types of metadata and 
>  >  content related to
>  >  that identifier.
>  >  
>  >  http://purl.org/oai/oai:VTETD:etd-06152001-152749
>  >  
>  >  For repositories that don't use the oai-identifier scheme, 
>  >  the Core ERRoL
>  >  pattern is this:
>  >  
>  >  "http://purl.org/oai/" + <repositoryIdentifier> + "/" + 
>  <identifier>
>  >  
>  >  For example:
>  >  
>  >  http://purl.org/oai/ndltd.oclc.org/oai:VTETD:etd-06152001-152749
>  >  
>  >  The list of available repositoryIdentifiers can be found at
>  >  (http://gita.grainger.uiuc.edu/registry/ListRepoIds.asp?self=1).
>  >  
>  >  Please check out some of the other cool things this 
>  service can do by
>  >  reading the project page.
>  >  
>  >  Comments and suggestions are welcome.
>  >  
>  >  Jeff
>  >  
>  >  ---
>  >  Jeffrey A. Young
>  >  Software Architect
>  >  Office of Research, Mail Code 710
>  >  OCLC Online Computer Library Center, Inc.
>  >  6565 Frantz Road
>  >  Dublin, OH   43017-3395
>  >  www.oclc.org
>  >  
>  >  Voice:	614-764-4342
>  >  Voice:	800-848-5878, ext. 4342
>  >  Fax:	614-718-7477
>  >  Email:	jyoung@oclc.org
>  >  
>  >  
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