MAN page from Old RedHat 6.X perl-libxml-enno-1.00-6.i386.rpm
NAMEDNODEMAP
Section: User Contributed Perl Documentation (1)
Updated: perl 5.005, patch 03
Index NAME
XML::DOM::NamedNodeMap - A hash table interface for XML::DOM
DESCRIPTION
Objects implementing the NamedNodeMap interface are used to representcollections of nodes that can be accessed by name. Note thatNamedNodeMap does not inherit from NodeList; NamedNodeMaps are notmaintained in any particular order. Objects contained in an objectimplementing NamedNodeMap may also be accessed by an ordinal index, butthis is simply to allow convenient enumeration of the contents of aNamedNodeMap, and does not imply that the DOM specifies an order tothese Nodes.
Note that in this implementation, the objects added to a NamedNodeMapare kept in order.
METHODS
- getNamedItem (name)
- Retrieves a node specified by name.
Return Value: A Node (of any type) with the specified name, or undef ifthe specified name did not identify any node in the map.
- setNamedItem (arg)
- Adds a node using its nodeName attribute.
As the nodeName attribute is used to derive the name whichthe node must be stored under, multiple nodes of certaintypes (those that have a ``special'' string value) cannot bestored as the names would clash. This is seen as preferableto allowing nodes to be aliased.
Parameters:
arg A node to store in a named node map.
The node will later be accessible using the value of the nodeNameattribute of the node. If a node with that name isalready present in the map, it is replaced by the new one.
Return Value: If the new Node replaces an existing node with the samename the previously existing Node is returned, otherwise undef is returned.
DOMExceptions:
- * WRONG_DOCUMENT_ERR
- Raised if arg was created from a different document than the one that created the NamedNodeMap.
- * NO_MODIFICATION_ALLOWED_ERR
- Raised if this NamedNodeMap is readonly.
- * INUSE_ATTRIBUTE_ERR
- Raised if 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.
- removeNamedItem (name)
- Removes a node specified by name. If the removed node is anAttr with a default value it is immediately replaced.
Return Value: The node removed from the map or undef if no node withsuch a name exists.
DOMException:
- * NOT_FOUND_ERR
- Raised if there is no node named name in the map.
- item (index)
- Returns the indexth item in the map. If index is greater thanor equal to the number of nodes in the map, this returns undef.
Return Value: The node at the indexth position in the NamedNodeMap, orundef if that is not a valid index.
- getLength
- Returns the number of nodes in the map. The range of valid child nodeindices is 0 to length-1 inclusive.
Additional methods not in the DOM Spec
- getValues
- Returns a NodeList with the nodes contained in the NamedNodeMap.The NodeList is ``live'', in that it reflects changes made to the NamedNodeMap.
When this method is called in a list context, it returns a regular perl listcontaining the values. Note that this list is not ``live''. E.g.
@list = $map->getValues; # returns a perl list $nodelist = $map->getValues; # returns a NodeList (object ref.) for my $val ($map->getValues) # iterate over the values
- getChildIndex (node)
- Returns the index of the node in the NodeList as returned by getValues, or -1if the node is not in the NamedNodeMap.
- dispose
- Removes all circular references in this NamedNodeMap and its descendants so the objects can be claimed for garbage collection. The objects should not be usedafterwards.
Index
- NAME
- DESCRIPTION
- METHODS
- Additional methods not in the DOM Spec
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