org.springframework.util

类 AutoPopulatingList<E>

java.lang.Object

org.springframework.util.AutoPopulatingList<E>

所有已实现的接口:

Serializable, Iterable<E>, Collection<E>, List<E>

public class AutoPopulatingList<E>
extends Object
implements List<E>, Serializable

Simple List wrapper class that allows for elements to be automatically populated as they are requested. This is particularly useful for data binding to Lists, allowing for elements to be created and added to the List in a "just in time" fashion.

Note: This class is not thread-safe. To create a thread-safe version, use the Collections.synchronizedList(java.util.List<T>) utility methods.

Inspired by LazyList from Commons Collections.

从以下版本开始:

2.0

作者:

Rob Harrop, Juergen Hoeller

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static interface	AutoPopulatingList.ElementFactory<E> Factory interface for creating elements for an index-based access data structure such as a List.
static class	AutoPopulatingList.ElementInstantiationException Exception to be thrown from ElementFactory.

构造器概要

构造器

构造器和说明
AutoPopulatingList(AutoPopulatingList.ElementFactory<E> elementFactory) Creates a new AutoPopulatingList that is backed by a standard ArrayList and creates new elements on demand using the supplied AutoPopulatingList.ElementFactory.
AutoPopulatingList(Class<? extends E> elementClass) Creates a new AutoPopulatingList that is backed by a standard ArrayList and adds new instances of the supplied element Class to the backing List on demand.
AutoPopulatingList(List<E> backingList, AutoPopulatingList.ElementFactory<E> elementFactory) Creates a new AutoPopulatingList that is backed by the supplied List and creates new elements on demand using the supplied AutoPopulatingList.ElementFactory.
AutoPopulatingList(List<E> backingList, Class<? extends E> elementClass) Creates a new AutoPopulatingList that is backed by the supplied List and adds new instances of the supplied element Class to the backing List on demand.

方法概要

限定符和类型	方法和说明
boolean	add(E o)
void	add(int index, E element)
boolean	addAll(Collection<? extends E> c)
boolean	addAll(int index, Collection<? extends E> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	equals(Object other)
E	get(int index) Get the element at the supplied index, creating it if there is no element at that index.
int	hashCode()
int	indexOf(Object o)
boolean	isEmpty()
Iterator<E>	iterator()
int	lastIndexOf(Object o)
ListIterator<E>	listIterator()
ListIterator<E>	listIterator(int index)
E	remove(int index)
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
E	set(int index, E element)
int	size()
List<E>	subList(int fromIndex, int toIndex)
Object[]	toArray()
<T> T[]	toArray(T[] a)

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.util.List

replaceAll, sort, spliterator

从接口继承的方法 java.util.Collection

parallelStream, removeIf, stream

从接口继承的方法 java.lang.Iterable

forEach

构造器详细资料

AutoPopulatingList

public AutoPopulatingList(Class<? extends E> elementClass)

Creates a new AutoPopulatingList that is backed by a standard ArrayList and adds new instances of the supplied element Class to the backing List on demand.

AutoPopulatingList

public AutoPopulatingList(List<E> backingList,
                          Class<? extends E> elementClass)

Creates a new AutoPopulatingList that is backed by the supplied List and adds new instances of the supplied element Class to the backing List on demand.

AutoPopulatingList

public AutoPopulatingList(AutoPopulatingList.ElementFactory<E> elementFactory)

Creates a new AutoPopulatingList that is backed by a standard ArrayList and creates new elements on demand using the supplied AutoPopulatingList.ElementFactory.

AutoPopulatingList

public AutoPopulatingList(List<E> backingList,
                          AutoPopulatingList.ElementFactory<E> elementFactory)

Creates a new AutoPopulatingList that is backed by the supplied List and creates new elements on demand using the supplied AutoPopulatingList.ElementFactory.

方法详细资料

add

public void add(int index,
                E element)

指定者:

add 在接口中 List<E>

add

public boolean add(E o)

指定者:

add 在接口中 Collection<E>

指定者:

add 在接口中 List<E>

addAll

public boolean addAll(Collection<? extends E> c)

指定者:

addAll 在接口中 Collection<E>

指定者:

addAll 在接口中 List<E>

addAll

public boolean addAll(int index,
                      Collection<? extends E> c)

指定者:

addAll 在接口中 List<E>

clear

public void clear()

指定者:

clear 在接口中 Collection<E>

指定者:

clear 在接口中 List<E>

contains

public boolean contains(Object o)

指定者:

contains 在接口中 Collection<E>

指定者:

contains 在接口中 List<E>

containsAll

public boolean containsAll(Collection<?> c)

指定者:

containsAll 在接口中 Collection<E>

指定者:

containsAll 在接口中 List<E>

get

public E get(int index)

Get the element at the supplied index, creating it if there is no element at that index.

指定者:

get 在接口中 List<E>

indexOf

public int indexOf(Object o)

指定者:

indexOf 在接口中 List<E>

isEmpty

public boolean isEmpty()

指定者:

isEmpty 在接口中 Collection<E>

指定者:

isEmpty 在接口中 List<E>

iterator

public Iterator<E> iterator()

指定者:

iterator 在接口中 Iterable<E>

指定者:

iterator 在接口中 Collection<E>

指定者:

iterator 在接口中 List<E>

lastIndexOf

public int lastIndexOf(Object o)

指定者:

lastIndexOf 在接口中 List<E>

listIterator

public ListIterator<E> listIterator()

指定者:

listIterator 在接口中 List<E>

listIterator

public ListIterator<E> listIterator(int index)

指定者:

listIterator 在接口中 List<E>

remove

public E remove(int index)

指定者:

remove 在接口中 List<E>

remove

public boolean remove(Object o)

指定者:

remove 在接口中 Collection<E>

指定者:

remove 在接口中 List<E>

removeAll

public boolean removeAll(Collection<?> c)

指定者:

removeAll 在接口中 Collection<E>

指定者:

removeAll 在接口中 List<E>

retainAll

public boolean retainAll(Collection<?> c)

指定者:

retainAll 在接口中 Collection<E>

指定者:

retainAll 在接口中 List<E>

set

public E set(int index,
             E element)

指定者:

set 在接口中 List<E>

size

public int size()

指定者:

size 在接口中 Collection<E>

指定者:

size 在接口中 List<E>

subList

public List<E> subList(int fromIndex,
                       int toIndex)

指定者:

subList 在接口中 List<E>

toArray

public Object[] toArray()

指定者:

toArray 在接口中 Collection<E>

指定者:

toArray 在接口中 List<E>

toArray

public <T> T[] toArray(T[] a)

指定者:

toArray 在接口中 Collection<E>

指定者:

toArray 在接口中 List<E>

equals

public boolean equals(Object other)

指定者:

equals 在接口中 Collection<E>

指定者:

equals 在接口中 List<E>

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

指定者:

hashCode 在接口中 Collection<E>

指定者:

hashCode 在接口中 List<E>

覆盖:

hashCode 在类中 Object