DSpace/DSpace — pull request #128 by arieljlira (2012-11-09 00:40:32+00:00)
Title: DS-1372: Change OAI2.0 DSpaceMetadataExistsFilter to check for one or more fields 

Change to org.dspace.xoai.filter.DSpaceMetadataExistsFilter to accept multiple fields instead of just one.
It could be used as follows:

org.dspace.xoai.filter.DSpaceMetadataExistsFilter

dc.contributor.author
dc.creator