com.opensymphony.xwork2.util
Class XWorkList

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<E>
          java.util.ArrayList
              com.opensymphony.xwork2.util.XWorkList

All Implemented Interfaces:

Serializable, Cloneable, Iterable, Collection, List, RandomAccess

public class XWorkList
extends ArrayList

A simple list that guarantees that inserting and retrieving objects will always work regardless of the current size of the list. Upon insertion, type conversion is also performed if necessary. Empty beans will be created to fill the gap between the current list size and the requested index using ObjectFactory's buildBean method.

Author:

Patrick Lightbody

See Also:

Serialized Form

Field Summary

private Class	clazz
private XWorkConverter	conv
private static Logger	LOG
private ObjectFactory	objectFactory

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

XWorkList(ObjectFactory fac, XWorkConverter conv, Class clazz)

XWorkList(ObjectFactory fac, XWorkConverter conv, Class clazz, int initialCapacity)

Method Summary

void	add(int index, Object element) Inserts the specified element at the specified position in this list.
boolean	add(Object element) Appends the specified element to the end of this list.
boolean	addAll(Collection c) Appends all of the elements in the specified Collection to the end of this list, in the order that they are returned by the specified Collection's Iterator.
boolean	addAll(int index, Collection c) Inserts all of the elements in the specified Collection into this list, starting at the specified position.
boolean	contains(Object element)
private Object	convert(Object element)
Object	get(int index) Returns the element at the specified position in this list.
Object	set(int index, Object element) Replaces the element at the specified position in this list with the specified element.

Methods inherited from class java.util.ArrayList

clear, clone, ensureCapacity, indexOf, isEmpty, lastIndexOf, remove, remove, removeRange, size, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractList

equals, hashCode, iterator, listIterator, listIterator, subList

Methods inherited from class java.util.AbstractCollection

containsAll, removeAll, retainAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

containsAll, equals, hashCode, iterator, listIterator, listIterator, removeAll, retainAll, subList

Field Detail

LOG

private static final Logger LOG

clazz

private Class clazz

conv

private XWorkConverter conv

objectFactory

private ObjectFactory objectFactory

Constructor Detail

XWorkList

public XWorkList(ObjectFactory fac,
                 XWorkConverter conv,
                 Class clazz)

XWorkList

public XWorkList(ObjectFactory fac,
                 XWorkConverter conv,
                 Class clazz,
                 int initialCapacity)

Method Detail

add

public void add(int index,
                Object element)

Inserts the specified element at the specified position in this list. Shifts the element currently at that position (if any) and any subsequent elements to the right (adds one to their indices).

This method is guaranteed to work since it will create empty beans to fill the gap between the current list size and the requested index to enable the element to be set. This method also performs any necessary type conversion.

Specified by:

add in interface List

Overrides:

add in class ArrayList

Parameters:

index - index at which the specified element is to be inserted.

element - element to be inserted.

add

public boolean add(Object element)

Appends the specified element to the end of this list.

This method performs any necessary type conversion.

Specified by:

add in interface Collection

Specified by:

add in interface List

Overrides:

add in class ArrayList

Parameters:

element - element to be appended to this list.

Returns:

true (as per the general contract of Collection.add).

addAll

public boolean addAll(Collection c)

Appends all of the elements in the specified Collection to the end of this list, in the order that they are returned by the specified Collection's Iterator. The behavior of this operation is undefined if the specified Collection is modified while the operation is in progress. (This implies that the behavior of this call is undefined if the specified Collection is this list, and this list is nonempty.)

This method performs any necessary type conversion.

Specified by:

addAll in interface Collection

Specified by:

addAll in interface List

Overrides:

addAll in class ArrayList

Parameters:

c - the elements to be inserted into this list.

Returns:

true if this list changed as a result of the call.

Throws:

NullPointerException - if the specified collection is null.

addAll

public boolean addAll(int index,
                      Collection c)

Inserts all of the elements in the specified Collection into this list, starting at the specified position. Shifts the element currently at that position (if any) and any subsequent elements to the right (increases their indices). The new elements will appear in the list in the order that they are returned by the specified Collection's iterator.

This method is guaranteed to work since it will create empty beans to fill the gap between the current list size and the requested index to enable the element to be set. This method also performs any necessary type conversion.

Specified by:

addAll in interface List

Overrides:

addAll in class ArrayList

Parameters:

index - index at which to insert first element from the specified collection.

c - elements to be inserted into this list.

Returns:

true if this list changed as a result of the call.

get

public Object get(int index)

Returns the element at the specified position in this list.

An object is guaranteed to be returned since it will create empty beans to fill the gap between the current list size and the requested index.

Specified by:

get in interface List

Overrides:

get in class ArrayList

Parameters:

index - index of element to return.

Returns:

the element at the specified position in this list.

set

public Object set(int index,
                  Object element)

Replaces the element at the specified position in this list with the specified element.

This method is guaranteed to work since it will create empty beans to fill the gap between the current list size and the requested index to enable the element to be set. This method also performs any necessary type conversion.

Specified by:

set in interface List

Overrides:

set in class ArrayList

Parameters:

index - index of element to replace.

element - element to be stored at the specified position.

Returns:

the element previously at the specified position.

convert

private Object convert(Object element)

contains

public boolean contains(Object element)

Specified by:

contains in interface Collection

Specified by:

contains in interface List

Overrides:

contains in class ArrayList