protected List < T > getBatchChunk ( List < T > list , int batchSize , int chunkNumber ) { if ( list == null || list . isEmpty ( ) ) { return null ; } final int start = chunkNumber * batchSize ; final int end = Math . min ( start + batchSize , list . size ( ) ) ; if ( start >= end ) { return null ; } return list . subList ( start , end ) ; }
Used to partition the list to chunks .