private static Set<DcsResourceIdentifier> getResourceIdentifierSet(SolrDocument doc) { Set<DcsResourceIdentifier> idSet = new HashSet<DcsResourceIdentifier>(); String[] authorities = setgetAll(doc, ResourceIdentifierField.AUTHORITY); String[] types = setgetAll(doc, ResourceIdentifierField.TYPE); String[] values = setgetAll(doc, ResourceIdentifierField.VALUE); for (int i = 0; i < values.length; i++) { DcsResourceIdentifier id = new DcsResourceIdentifier(); id.setAuthorityId(authorities[i]); id.setTypeId(types[i]); id.setIdValue(values[i]); idSet.add(id); } return idSet; }