EnumerationIndoUtil

public class EnumerationIndoUtil {


  public static <T1> Enumeration<List<T1>> createPartitionedEnumeration(final List<T1> originalList, final int blockSize) {

		class PartitionedEnum implements Enumeration<List<T1>> {

			int lastIndex = 0;

			public boolean hasMoreElements() {
				return this.lastIndex < originalList.size();
			}

			public List<T1> nextElement() {
				int beginIndex = this.lastIndex;
				int endIndex = 0;
				if (this.lastIndex + blockSize > originalList.size()) {
					endIndex = originalList.size();
				} else {
					endIndex = this.lastIndex + blockSize;
				}
				this.lastIndex = endIndex;
				return originalList.subList(beginIndex, endIndex);
			}
		}

		return new PartitionedEnum();
	}
}