org.finra.herd.dao.helper

Class HerdCollectionHelper

java.lang.Object

org.finra.herd.dao.helper.HerdCollectionHelper

@Component
public class HerdCollectionHelper
extends Object

Helper for collections. TODO add getCollectionSize(), a null-safe size() operation TODO add getFirstElement(), a null-safe iterator().next() operation

Constructor Summary

Constructors

Constructor and Description
HerdCollectionHelper()

Method Summary

Modifier and Type	Method and Description
<T> T	safeGet(List<T> list, int index) Null-safe and index-safe list get.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HerdCollectionHelper

public HerdCollectionHelper()

Method Detail

safeGet

public <T> T safeGet(List<T> list,
                     int index)

Null-safe and index-safe list get. The method returns null if the list is null or the index is out of bounds. Returns element at index otherwise.

Type Parameters:

T - the type of list element

Parameters:

list - List of T

index - index of element

Returns:

element or null