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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
Objects implementing the NamedNodeMap
interface are used to
represent collections of nodes that can be accessed by name. Note that
NamedNodeMap
does not inherit from NodeList
;
NamedNodeMaps
are not maintained in any particular order. Objects
contained in an object implementing NamedNodeMap
may also be
accessed by an ordinal index, but this is simply to allow convenient
enumeration of the contents of a NamedNodeMap
, and does not imply
that the DOM specifies an order to these Nodes.
NamedNodeMap
objects in the DOM are live.
See also the Document Object Model (DOM) Level 2 Core Specification.
Method Summary | |
int |
getLength()
The number of nodes in this map. |
Node |
getNamedItem(java.lang.String name)
Retrieves a node specified by name. |
Node |
getNamedItemNS(java.lang.String namespaceURI,
java.lang.String localName) Retrieves a node specified by local name and namespace URI. |
Node |
item(int index)
Returns the index th item in the map. |
Node |
removeNamedItem(java.lang.String name) Removes a node specified by name. |
Node |
removeNamedItemNS(java.lang.String namespaceURI,
java.lang.String localName) Removes a node specified by local name and namespace URI. |
Node |
setNamedItem(Node arg) Adds a node using its nodeName attribute. |
Node |
setNamedItemNS(Node arg) Adds a node using its namespaceURI and localName . |
Method Detail |
public Node getNamedItem(java.lang.String name)
name
- The nodeName
of a node to retrieve.Node
(of any type) with the specified nodeName
,
or null
if it does not identify any node in this map.public Node setNamedItem(Node arg) throws DOMException
nodeName
attribute. If a node with that
name is already present in this map, it is replaced by the new one.nodeName
attribute is used to derive the name which the
node must be stored under, multiple nodes of certain types (those that have a
"special" string value) cannot be stored as the names would clash. This is seen
as preferable to allowing nodes to be aliased.arg
- A node to store in this map. The node will later be
accessible using the value of its nodeName
attribute.Node
replaces an existing node the replaced
Node
is returned, otherwise null
is returned.arg
was created from a different
document than the one that created this map.arg
is an Attr
that is
already an attribute of another Element
object. The DOM user must
explicitly clone Attr
nodes to re-use them in other
elements.public Node removeNamedItem(java.lang.String name) throws DOMException
name
- The nodeName
of the node to remove.name
in this
map.public Node item(int index)
index
th item in the map. If index
is
greater than or equal to the number of nodes in this map, this returns
null
.index
- Index into this map.index
th position in the map, or
null
if that is not a valid index.public int getLength()
0
to length-1
inclusive.public Node getNamedItemNS(java.lang.String namespaceURI, java.lang.String localName)
namespaceURI
- The namespace URI of the node to retrieve.localName
- The local name of the node to retrieve.Node
(of any type) with the specified local name and
namespace URI, or null
if they do not identify any node in this
map.public Node setNamedItemNS(Node arg) throws DOMException
namespaceURI
and localName
.
If a node with that namespace URI and that local name is already present in
this map, it is replaced by the new one.arg
- A node to store in this map. The node will later be
accessible using the value of its namespaceURI
and
localName
attributes.Node
replaces an existing node the replaced
Node
is returned, otherwise null
is returned.arg
was created from a different
document than the one that created this map.arg
is an Attr
that is
already an attribute of another Element
object. The DOM user must
explicitly clone Attr
nodes to re-use them in other
elements.public Node removeNamedItemNS(java.lang.String namespaceURI, java.lang.String localName) throws DOMException
Node
interface. If so, an attribute immediately appears
containing the default value as well as the corresponding namespace URI, local
name, and prefix when applicable.namespaceURI
- The namespace URI of the node to remove.localName
- The local name of the node to remove.namespaceURI
and localName
in this map.
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