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org::w3c::dom::Attr Interface Reference

Inheritance diagram for org::w3c::dom::Attr:

org::w3c::dom::Node

List of all members.


Detailed Description

The Attr interface represents an attribute in an Element object.Typically the allowable values for the attribute are defined in a documenttype definition.

Attr objects inherit the Node interface, but since they are not actually child nodes of the element they describe, the DOM does not consider them part of the document tree. Thus, the Node attributes parentNode, previousSibling, and nextSibling have a null value for Attr objects. The DOM takes the view that attributes are properties of elements rather than having a separate identity from the elements they are associated with; this should make it more efficient to implement such features as default attributes associated with all elements of a given type. Furthermore, Attr nodes may not be immediate children of a DocumentFragment. However, they can be associated with Element nodes contained within a DocumentFragment. In short, users and implementors of the DOM need to be aware that Attr nodes have some things in common with other objects inheriting the Node interface, but they also are quite distinct.

The attribute's effective value is determined as follows: if this attribute has been explicitly assigned any value, that value is the attribute's effective value; otherwise, if there is a declaration for this attribute, and that declaration includes a default value, then that default value is the attribute's effective value; otherwise, the attribute does not exist on this element in the structure model until it has been explicitly added. Note that the nodeValue attribute on the Attr instance can also be used to retrieve the string version of the attribute's value(s).

In XML, where the value of an attribute can contain entity references, the child nodes of the Attr node provide a representation in which entity references are not expanded. These child nodes may be either Text or EntityReference nodes. Because the attribute type may be unknown, there are no tokenized attribute values.

Definition at line 45 of file Attr.java.


Public Member Functions

Node appendChild (Node newChild) throws DOMException
Node cloneNode (boolean deep)
NamedNodeMap getAttributes ()
NodeList getChildNodes ()
Node getFirstChild ()
Node getLastChild ()
String getName ()
Node getNextSibling ()
String getNodeName ()
short getNodeType ()
String getNodeValue () throws DOMException
Document getOwnerDocument ()
Node getParentNode ()
Node getPreviousSibling ()
boolean getSpecified ()
String getValue ()
boolean hasChildNodes ()
Node insertBefore (Node newChild, Node refChild) throws DOMException
Node removeChild (Node oldChild) throws DOMException
Node replaceChild (Node newChild, Node oldChild) throws DOMException
void setNodeValue (String nodeValue) throws DOMException
void setValue (String value)

Static Public Attributes

static final short ATTRIBUTE_NODE = 2
static final short CDATA_SECTION_NODE = 4
static final short COMMENT_NODE = 8
static final short DOCUMENT_FRAGMENT_NODE = 11
static final short DOCUMENT_NODE = 9
static final short DOCUMENT_TYPE_NODE = 10
static final short ELEMENT_NODE = 1
static final short ENTITY_NODE = 6
static final short ENTITY_REFERENCE_NODE = 5
static final short NOTATION_NODE = 12
static final short PROCESSING_INSTRUCTION_NODE = 7
static final short TEXT_NODE = 3

The documentation for this interface was generated from the following file:

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