public static GribCollectionImmutable openGribCollectionFromRaf ( RandomAccessFile raf , FeatureCollectionConfig config , CollectionUpdateType updateType , org . slf4j . Logger logger ) throws IOException { GribCollectionImmutable result ; // check if its a plain ole GRIB1/2 data file boolean isGrib1 = false ; boolean isGrib2 = Grib2RecordScanner . isValidFile ( raf ) ; if ( ! isGrib2 ) isGrib1 = Grib1RecordScanner . isValidFile ( raf ) ; if ( isGrib1 || isGrib2 ) { result = openGribCollectionFromDataFile ( isGrib1 , raf , config , updateType , null , logger ) ; // close the data file, the ncx raf file is managed by gribCollection raf . close ( ) ; } else { // check its an ncx file result = openGribCollectionFromIndexFile ( raf , config , logger ) ; } return result ; }
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