org.opensaml.xml.util

Class XMLObjectChildrenList<ElementType extends XMLObject>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<ElementType>

org.opensaml.xml.util.XMLObjectChildrenList<ElementType>

Type Parameters:

ElementType - type of elements added to the list

All Implemented Interfaces:

Iterable<ElementType>, Collection<ElementType>, List<ElementType>

Direct Known Subclasses:

IndexedXMLObjectChildrenList

public class XMLObjectChildrenList<ElementType extends XMLObject>
extends AbstractList<ElementType>

Resizable list for the children of XMLObjects. This list implements all optional List operations and does not all for null elements. XMLObjects added to, or removed from, this list will have their parent object appropriately set and, the underlying DOM will be released during mutation opertions.

Field Summary

Fields

Modifier and Type	Field and Description
private List<ElementType>	elements List of elements.
private XMLObject	parent Parent to the elements in this list.

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
XMLObjectChildrenList(XMLObject newParent) Constructs an empty list with all added XMLObjects being assigned the given parent XMLObject.
XMLObjectChildrenList(XMLObject newParent, Collection<ElementType> newElements) Constructs a list containing the elements in the specified collection, in the order they are returned by the collection's iterator, with each added XMLObject assigned the given parent XMLObject.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(int index, ElementType element) Adds the given XMLObject to this list.
boolean	contains(ElementType element) Checks to see if the given element is contained in this list.
ElementType	get(int index)
boolean	remove(ElementType element) Removes the element from the list.
ElementType	remove(int index)
ElementType	set(int index, ElementType element) Replaces the XMLObject at the specified index with the given element.
protected void	setParent(ElementType element) Assigned the parent, given at list construction, to the given element if the element does not have a parent or its parent matches the one given at list construction time.
int	size()

Methods inherited from class java.util.AbstractList

add, addAll, clear, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, removeRange, subList

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.List

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray

Field Detail

parent

private XMLObject parent

Parent to the elements in this list.

elements

private List<ElementType extends XMLObject> elements

List of elements.

Constructor Detail

XMLObjectChildrenList

public XMLObjectChildrenList(XMLObject newParent)
                      throws NullPointerException

Constructs an empty list with all added XMLObjects being assigned the given parent XMLObject.

Parameters:

newParent - the parent for all the added XMLObjects

Throws:

NullPointerException - thrown if the parent is null

XMLObjectChildrenList

public XMLObjectChildrenList(XMLObject newParent,
                     Collection<ElementType> newElements)
                      throws NullPointerException

Constructs a list containing the elements in the specified collection, in the order they are returned by the collection's iterator, with each added XMLObject assigned the given parent XMLObject.

Parameters:

newParent - the parent for all the added XMLObjects

newElements - the elements to be added

Throws:

NullPointerException - thrown if the parent is null

IllegalArgumentException - thrown if any of the XMLObjects in the given collection already have a parent that is different from the given parent

Method Detail

size

public int size()

Specified by:

size in interface Collection<ElementType extends XMLObject>

Specified by:

size in interface List<ElementType extends XMLObject>

Specified by:

size in class AbstractCollection<ElementType extends XMLObject>

contains

public boolean contains(ElementType element)

Checks to see if the given element is contained in this list.

Parameters:

element - the element to check for

Returns:

true if the element is in this list, false if not

get

public ElementType get(int index)

Specified by:

get in interface List<ElementType extends XMLObject>

Specified by:

get in class AbstractList<ElementType extends XMLObject>

set

public ElementType set(int index,
              ElementType element)
                                  throws IllegalArgumentException

Replaces the XMLObject at the specified index with the given element.

Specified by:

set in interface List<ElementType extends XMLObject>

Overrides:

set in class AbstractList<ElementType extends XMLObject>

Parameters:

index - index of the XMLObject to be replaced

element - element to be stored at the given index

Returns:

the replaced XMLObject

Throws:

IllegalArgumentException - thrown if the given XMLObject already has a parent that is different from the XMLObject given at list construction time

add

public void add(int index,
       ElementType element)
         throws IllegalArgumentException

Adds the given XMLObject to this list.

Specified by:

add in interface List<ElementType extends XMLObject>

Overrides:

add in class AbstractList<ElementType extends XMLObject>

Parameters:

index - index at which to add the given XMLObject

element - element to be stored at the given index

Throws:

IllegalArgumentException - thrown if the given XMLObject already has a parent that is different from the XMLObject given at list construction time

remove

public ElementType remove(int index)

Specified by:

remove in interface List<ElementType extends XMLObject>

Overrides:

remove in class AbstractList<ElementType extends XMLObject>

remove

public boolean remove(ElementType element)

Removes the element from the list.

Parameters:

element - the element to be removed

Returns:

true if the element was in the list and removed, false if not

setParent

protected void setParent(ElementType element)
                  throws IllegalArgumentException

Assigned the parent, given at list construction, to the given element if the element does not have a parent or its parent matches the one given at list construction time.

Parameters:

element - the element to set the parent on

Throws:

IllegalArgumentException - thrown if the given element already has a parent and it is different than the parent given at list construction time