EDIT

import java.io.IOException;

import java.net.URI;

import org.apache.http.client.ClientProtocolException;

import org.apache.log4j.Logger;

import eu.etaxonomy.cdm.ext.occurrence.OccurenceQuery;

import eu.etaxonomy.cdm.ext.occurrence.bioCase.BioCaseQueryServiceWrapper;

    private static final Logger logger = Logger.getLogger(UnitAssociationParser.class);

                //unit id

                String unitId = AbcdParseUtility.parseFirstTextContent(unitAssociation.getElementsByTagName(prefix+"UnitID"));

                //data access point

                URI datasetAccessPoint = AbcdParseUtility.parseFirstUri(unitAssociation.getElementsByTagName(prefix+"DatasetAccessPoint"));

                if(datasetAccessPoint==null){

                    datasetAccessPoint = AbcdParseUtility.parseFirstUri(unitAssociation.getElementsByTagName(prefix+"Comment"));

                String message = "Unable to load unit "+unitId+" from "+datasetAccessPoint;

                if(datasetAccessPoint!=null){

                    //association type

                    NodeList associationTypeList = unitAssociation.getElementsByTagName(prefix+"AssociationType");

                    BioCaseQueryServiceWrapper serviceWrapper = new BioCaseQueryServiceWrapper();

                    OccurenceQuery query = new OccurenceQuery(unitId);

                    try {

                        serviceWrapper.query(query, datasetAccessPoint);

                    } catch (ClientProtocolException e) {

                        logger.error(message, e);

                    } catch (IOException e) {

                        logger.error(message, e);

                    }

                    report.addInfoMessage(message);

            }

//            //FIXME: how to handle multiple unit assocations?

//            // maybe check AssociationType but this needs to be stable

//            // for only the first unitAssociation will be used

//            if(unitAssociationList.getLength()>0 && unitAssociationList.item(0) instanceof Element){

//                String collectionName = AbcdParseUtility.parseFirstTextContent(unitAssociation.getElementsByTagName(prefix+"SourceName"));

//                List<Collection> matchingCollections = cdmAppController.getCollectionService().findByTitle(Collection.class, collectionName, MatchMode.EXACT, null, null, null, null, null).getRecords();

//                Collection collection;

//                if(matchingCollections.size()==1){

//                    collection = matchingCollections.iterator().next();

//                }

//                else{

//                    collection = Collection.NewInstance();

//                    collection.setName(collectionName);

//                }

//                String institutionName = AbcdParseUtility.parseFirstTextContent(unitAssociation.getElementsByTagName(prefix+"SourceInstitutionCode"));

//                List<AgentBase> matchingInstitutions = cdmAppController.getAgentService().findByTitle(Institution.class, institutionName, MatchMode.EXACT, null, null, null, null, null).getRecords();

//                Institution institution;

//                if(matchingInstitutions.size()==1){

//                    institution = (Institution) matchingInstitutions.iterator().next();

//                }

//                else{

//                    institution = Institution.NewInstance();

//                    institution.setName(institutionName);

//                }

//            }