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The Citations code provides a Java interface that defines methods used by the Citations Helper to find appropriate configuration information for a given user. See:
org.sakaiproject.citation.api.SiteOsidConfiguration
Implementation
A SiteOsidConfiguration implementation picks the proper XML configuration files for the current user, based on that user's context: campus and course affiliations, guest status, etc.
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The default SiteOsidConfiguration API implementation provided with the Citations Helper is available here:
org.sakaiproject.citation.impl.SampleSiteOsidConfiguration
This class makes three basic decisions:
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You may also want to review the editing overview for Citations configuration files.
Note: The Java source code linked to from this page is in Sakai trunk. Be sure to review the code included with your Sakai release when making changes.