May be it works the same in older versions too. I have not checked.
I want to exclude from OAI the items under two collections and one
community.
I have in xoai.xml filter and condition:
------------------------------------------------------------------------------------
<!-- Default filter for records returned by OAI-PMH.
By default, return an Item record:
* If it is publicly accessible
* OR it has been withdrawn (in order to display a tombstone
record).
This filter is used by the default context ([oai]/request).
-->
<Filter id="defaultFilter">
<Definition>
<And>
<LeftCondition>
<Or>
<LeftCondition>
<Custom ref="itemAccessCondition"/>
</LeftCondition>
<RightCondition>
<Custom ref="itemWithdrawnCondition"/>
</RightCondition>
</Or>
</LeftCondition>
<RightCondition>
<Not>
<Condition>
<Custom ref="onepageCondition"/>
</Condition>
</Not>
</RightCondition>
</And>
</Definition>
</Filter>
------------------------------------------------------------------------------------
<!-- This condition determines if an Item is in one of the
collections.
-->
<CustomCondition id="onepageCondition">
<Class>org.dspace.xoai.filter.ColComFilter</Class>
<Configuration>
<list name="collections">
<string>col_nls_87</string>
<string>col_nls_25523</string>
<string>com_nls_22332</string>
</list>
</Configuration>
</CustomCondition>
------------------------------------------------------------------------------------
and the main part of ColComFilter.java is:
public boolean isShown(DSpaceItem item) {
if (collectionSpecs == null) {
getCollectionSpecs();
}
for (ReferenceSet rs : item.getSets()) {
if (collectionSpecs.contains(rs.getSetSpec())) {
return true;
}
}
return false;
}
------------------------------------------------------------------------------------
This works fine for the two collections:
http://dspace6:8080/oai/request?verb=ListIdentifiers&metadataPrefix=oai_dc&set=col_nls_87
http://dspace6:8080/oai/request?verb=ListIdentifiers&metadataPrefix=oai_dc&set=col_nls_25523
return <error code="noRecordsMatch"
But it works differently for the community:
http://dspace6:8080/oai/request?verb=ListIdentifiers&metadataPrefix=oai_dc&set=com_nls_22332
returns a lot of identifiers:
completeListSize="3731" (which is the size of the community)
and many entries like:
<header>
<identifier>oai:dspace6:nls/27837</identifier>
<datestamp>2017-12-14T09:52:31Z</datestamp>
<setSpec>com_nls_22332</setSpec>
<setSpec>com_nls_94</setSpec>
<setSpec>col_nls_26938</setSpec>
</header>
But for everyone of the identifiers in the list (I tried 20) the request
http://dspace6:8080/oai/request?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:dspace6:nls/27837
returns <error code="idDoesNotExist"
So that first OAI returns the ID in the list and second it says "the ID
does not exist". The second part I expected because I want to exclude all
items under this community. But the first part - the non empty list of IDs
was unexpected.
Is there an explanation of this or is this a defect in OAI?
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