package com.atlassian.plugins.rest.common.expand.entity;
   
   import com.atlassian.plugins.rest.common.expand.parameter.Indexes;
   import com.google.common.collect.Lists;
   
   import java.util.List;
   
   public class ListWrapperCallBacks {
       public static <T> ListWrapperCallback<T> identity(final List<T> items) {
          return new ListWrapperCallback<T>() {
              public List<T> getItems(Indexes indexes) {
                  return items;
              }
          };
      }
  
      public static <T> ListWrapperCallback<T> ofList(final List<T> items) {
          return ofList(items, Integer.MAX_VALUE);
      }
  
      public static <T> ListWrapperCallback<T> ofList(final List<T> items, final int maxResults) {
          return new ListWrapperCallback<T>() {
              public List<T> getItems(Indexes indexes) {
                  final List<T> toReturn = Lists.newLinkedList();
                  for (Integer i : indexes.getIndexes(items.size())) {
                      if (i < items.size()) {
                          toReturn.add(items.get(i));
                      }
                      if (toReturn.size() == maxResults) {
                          break;
                      }
                  }
                  return toReturn;
              }
          };
      }
  }