added not null check
added not null check


SVN-Revision: 6270

NCIP/catissue-core,NCIP/catissue-core,asamgir/openspecimen,krishagni/openspecimen,NCIP/catissue-core,krishagni/openspecimen,asamgir/openspecimen,krishagni/openspecimen,asamgir/openspecimen