gnu.xml.dom
public class DomAttr extends DomNsNode implements Attr
"Attr" implementation. In DOM, attributes cost quite a lot of memory because their values are complex structures rather than just simple strings. To reduce your costs, avoid having more than one child of an attribute; stick to a single Text node child, and ignore even that by using the attribute's "nodeValue" property.
As a bit of general advice, only look at attribute modification events through the DOMAttrModified event (sent to the associated element). Implementations are not guaranteed to report other events in the same order, so you're very likely to write nonportable code if you monitor events at the "children of Attr" level.
At this writing, not all attribute modifications will cause the DOMAttrModified event to be triggered ... only the ones using the string methods (setNodeValue, setValue, and Element.setAttribute) to modify those values. That is, if you manipulate those children directly, elements won't get notified that attribute values have changed. The natural fix for that will report other modifications, but won't be able to expose "previous" attribute value; it'll need to be cached or something (at which point why bother using child nodes).
You are strongly advised not to use "children" of any attribute nodes you work with.
Version: $Date: 2001/11/20 04:53:46 $
Constructor Summary | |
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protected | DomAttr(Document owner, String namespaceURI, String name)
Constructs an Attr node associated with the specified document.
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Method Summary | |
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Object | clone()
Shallow clone of the attribute, breaking all ties with any
elements. |
String | getName()
DOM L1
Returns the attribute name (same as getNodeName) |
short | getNodeType()
DOM L1
Returns the constant ATTRIBUTE_NODE. |
String | getNodeValue()
DOM L1
Returns the attribute value, with character and entity
references substituted.
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Element | getOwnerElement()
DOM L2
Returns the element with which this attribute is associated. |
boolean | getSpecified()
DOM L1
Returns true if a parser reported this was in the source text. |
String | getValue()
DOM L1
Returns the value of the attribute as a non-null string; same
as getNodeValue.
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void | setNodeValue(String value)
DOM L1
Assigns the attribute value; using this API, no entity or
character references will exist.
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void | setOwnerElement(Element e)
Records the element with which this attribute is associated. |
void | setSpecified(boolean value)
Records whether this attribute was in the source text. |
void | setValue(String value)
DOM L1
Assigns the value of the attribute; it will have one child,
which is a text node with the specified value (same as
setNodeValue). |
This constructor should only be invoked by a Document as part of its createAttribute functionality, or through a subclass which is similarly used in a "Sub-DOM" style layer.
Parameters: owner The document with which this node is associated namespaceURI Combined with the local part of the name, this is used to uniquely identify a type of attribute name Name of this attribute, which may include a prefix
Source code is under GPL (with library exception) in the JAXP project at http://www.gnu.org/software/classpathx/jaxp
This documentation was derived from that source code on 2011-08-26.