question: @ Override public void doInitialize ( UimaContext aContext ) throws ResourceInitializationException { DB db = mongoResource . getDB ( ) ; collection = db . getCollection ( collectionName ) ; collection . createIndex ( new BasicDBObject ( FIELD_UNIQUE_ID , 1 ) ) ; collection . createIndex ( new BasicDBObject ( FIELD_PUBLISHEDIDS , 1 ) ) ; stopFeatures = new HashSet < String > ( ) ; stopFeatures . add ( "uima.cas.AnnotationBase:sofa" ) ; stopFeatures . add ( "uk.gov.dstl.baleen.types.BaleenAnnotation:internalId" ) ; maxContentLength = ConfigUtils . stringToInteger ( maxContentLengthString , 0 ) ; }
target:  Get the MongoDB, collection and create some indexes