DTMNamedNodeMappublic class DTMNamedNodeMap extends Object implements NamedNodeMapDTMNamedNodeMap is a quickie (as opposed to quick) implementation of the DOM's
NamedNodeMap interface, intended to support DTMProxy's getAttributes()
call.
***** Note: this does _not_ current attempt to cache any of the data;
if you ask for attribute 27 and then 28, you'll have to rescan the first
27. It should probably at least keep track of the last one retrieved,
and possibly buffer the whole array.
***** Also note that there's no fastpath for the by-name query; we search
linearly until we find it or fail to find it. Again, that could be
optimized at some cost in object creation/storage. |
Fields Summary |
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DTM | dtmThe DTM for this node. | int | elementThe DTM element handle. | short | m_countThe number of nodes in this map. |
Constructors Summary |
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public DTMNamedNodeMap(DTM dtm, int element)Create a getAttributes NamedNodeMap for a given DTM element node
this.dtm = dtm;
this.element = element;
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Methods Summary |
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public int | getLength()Return the number of Attributes on this Element
if (m_count == -1)
{
short count = 0;
for (int n = dtm.getFirstAttribute(element); n != -1;
n = dtm.getNextAttribute(n))
{
++count;
}
m_count = count;
}
return (int) m_count;
| public org.w3c.dom.Node | getNamedItem(java.lang.String name)Retrieves a node specified by name.
for (int n = dtm.getFirstAttribute(element); n != -1;
n = dtm.getNextAttribute(n))
{
if (dtm.getNodeName(n).equals(name))
return dtm.getNode(n);
}
return null;
| public org.w3c.dom.Node | getNamedItemNS(java.lang.String namespaceURI, java.lang.String localName)Retrieves a node specified by local name and namespace URI. HTML-only
DOM implementations do not need to implement this method.
throw new DTMException(DTMException.NOT_SUPPORTED_ERR);
| public org.w3c.dom.Node | item(int i)Returns the index th item in the map. If index
is greater than or equal to the number of nodes in this map, this
returns null .
int count = 0;
for (int n = dtm.getFirstAttribute(element); n != -1;
n = dtm.getNextAttribute(n))
{
if (count == i)
return dtm.getNode(n);
else
++count;
}
return null;
| public org.w3c.dom.Node | removeNamedItem(java.lang.String name)Removes a node specified by name. When this map contains the attributes
attached to an element, if the removed attribute is known to have a
default value, an attribute immediately appears containing the
default value as well as the corresponding namespace URI, local name,
and prefix when applicable.
throw new DTMException(DTMException.NO_MODIFICATION_ALLOWED_ERR);
| public org.w3c.dom.Node | removeNamedItemNS(java.lang.String namespaceURI, java.lang.String localName)Removes a node specified by local name and namespace URI. A removed
attribute may be known to have a default value when this map contains
the attributes attached to an element, as returned by the attributes
attribute of the 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.
HTML-only DOM implementations do not need to implement this method.
throw new DTMException(DTMException.NO_MODIFICATION_ALLOWED_ERR);
| public org.w3c.dom.Node | setNamedItem(org.w3c.dom.Node newNode)Adds a node using its nodeName attribute. If a node with
that name is already present in this map, it is replaced by the new
one.
As the 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.
throw new DTMException(DTMException.NO_MODIFICATION_ALLOWED_ERR);
| public org.w3c.dom.Node | setNamedItemNS(org.w3c.dom.Node arg)Adds a node using its 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.
HTML-only DOM implementations do not need to implement this method.
throw new DTMException(DTMException.NO_MODIFICATION_ALLOWED_ERR);
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