DSpace Techs & Devs,
Greetings all, I'm working on a grant funded initiative for the University
System of Georgia which involves several (10 at the moment) different
academic institutions across the state of Georgia, all but two of whom are
running DSpace for their repository software. One of our deliverables for
the grant is a meta-repository covering communities, collections and items
for all the involved institutions. One constraint of the project is that
rather than providing users with an organization of content via
communities, collections and items, we're offering instead "Disciplines"
and items. A discipline is just a DSpace community but this organization
has allowed us a way to incorporate all institutions' records into a
subject hierarchy that makes sense for all institutions. In effort toward
reaching this goal, we've hidden or removed all references to collections
within the meta-repository... except for one.
The one reference to DSpace collections that we've been unable to remove or
shows up on DSpace's search results pages. When displaying search results
the first results are communities relevant to the search term(s). The
second set of results are those where the communities are relevant to those
terms. After this of course, the relevant items are show. I've been able to
modify the AbstractSearch.java in such a way that collection *references* are
not added to the *referenceSet*, the result of which is that collections
are not displayed in the search results. However, because of the way that
I've achieved this, the "numbering" of items is off-kilter and strange (to
the user) but predictable things happen. Rather than describing (which is
difficult) I'll offer an example (which should make the problem and
behavior completely clear).
Example:
Let's say we do a search for "biology". The query returns, say, 30 records.
There are 6 communities, 11 collections, and 13 items. With this being the
case, there are (by default) 3 pages of results with 10 results per page.
After the customization to the AbstractSearch class (shown below) the
behavior of the interface is as follows - On the first page, there are 6
results shown, all 6 being community results (4 missing collections). On
the second page there are 3 results, all items (7 missing collections). On
the third page there are 10 results, all items.
AbstractSearch.java beginning at line 282:
if (resultDSO instanceof Community
// || resultDSO instanceof Collection
)
{
if (referenceSet == null) {
referenceSet =
results.addReferenceSet("search-results-repository",
ReferenceSet.TYPE_SUMMARY_LIST,null,"repository-search-results");
// Set a heading showing that we will be
listing containers that matched:
referenceSet.setHead(T_head2);
resultsContainsBothContainersAndItems = true;
}
referenceSet.addReference(resultDSO);
}
All that has been done in modifying the code was to comment out the adding
of resultDSO objects when they are instanceof Collection. This prevents
those *references* from being added to the *referenceSet*. I've been
digging through the code in attempt to understand how the search results
pages are built so that I may find an appropriate place higher up the chain
to make my modification, specifically so that individual search results
pages are built without awareness of Collection objects - which would
(theoretically) alleviate our difficulty. In searching through the code,
I've found of course that the QueryResults, QueryArgs,
AbstractDSpaceTransformer, AbstractWingTransformer, and DSpaceTransformer
classes are all in some way related, and that QueryResults especially seems
pivotal, but I've not been able to understand how the pieces come together
well enough to figure how where I might make changes to complete this last
piece of our collection references puzzle.
If anyone has tips, hints, suggestions or resources toward a solution on
this issue, it'd be greatly appreciated.
Many Thanks,
- Patrick E.
As a sidenote, I've been attempting to integrate my development DSpace
instance(s) into my IDE (Eclipse in my case). My hope was that I could
enable tomcat debugging and... attach source code to execution code so that
I could create break points and step through the code. I wanted to
accomplish this so that I could provide more detail when emailing the list,
but I've not yet been able to accomplish this with the DSpace software. But
that integration is something that I've been unable to accomplish for a
couple years now, so that's really a different subject. Point being I was
making the effort to provide as much detail for this issue as possible.
Patrick K. Etienne
Systems Analyst
Georgia Institute of Technology
Library & Information Center
(404) 385-8121
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