## org.apache.xerces.impl.xs.opti
Class NamedNodeMapImpl

    java.lang.Object
      |
      +--org.apache.xerces.impl.xs.opti.NamedNodeMapImpl

All Implemented Interfaces:
  org.w3c.dom.NamedNodeMap

public class NamedNodeMapImpl
extends java.lang.Object
implements org.w3c.dom.NamedNodeMap

# INTERNAL:

  Usage of this class is not supported. It may be altered or removed at any time.

Version:
  $Id: NamedNodeMapImpl.java 446728 2006-09-15 20:43:46Z mrglavas $
Author:
  Rahul Srivastava, Sun Microsystems Inc.

Constructor Summary
`NamedNodeMapImpl(org.w3c.dom.Attr[] attrs)`

Method Summary
`int` `getLength()` The number of nodes in this map.
`org.w3c.dom.Node` `getNamedItem(java.lang.String name)` Retrieves a node specified by name.
`org.w3c.dom.Node` `getNamedItemNS(java.lang.String namespaceURI, java.lang.String localName)` Retrieves a node specified by local name and namespace URI.
`org.w3c.dom.Node` `item(int index)` Returns the `index`th item in the map.
`org.w3c.dom.Node` `removeNamedItem(java.lang.String name)` Removes a node specified by name.
`org.w3c.dom.Node` `removeNamedItemNS(java.lang.String namespaceURI, java.lang.String localName)` Removes a node specified by local name and namespace URI.
`org.w3c.dom.Node` `setNamedItem(org.w3c.dom.Node arg)` Adds a node using its `nodeName` attribute.
`org.w3c.dom.Node` `setNamedItemNS(org.w3c.dom.Node arg)` Adds a node using its `namespaceURI` and `localName`.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### NamedNodeMapImpl

    public NamedNodeMapImpl(org.w3c.dom.Attr[] attrs)

Method Detail

### getNamedItem

    public org.w3c.dom.Node getNamedItem(java.lang.String name)

  Description copied from interface: `org.w3c.dom.NamedNodeMap`
  Retrieves a node specified by name.
  Specified by:
    `getNamedItem` in interface `org.w3c.dom.NamedNodeMap`
  Following copied from interface: `org.w3c.dom.NamedNodeMap`
  Parameters:
    `name` - The `nodeName` of a node to retrieve.
  Returns:
    A `Node` (of any type) with the specified `nodeName`, or `null` if it does not identify any node in this map.

### item

    public org.w3c.dom.Node item(int index)

  Description copied from interface: `org.w3c.dom.NamedNodeMap`
  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`.
  Specified by:
    `item` in interface `org.w3c.dom.NamedNodeMap`
  Following copied from interface: `org.w3c.dom.NamedNodeMap`
  Parameters:
    `index` - Index into this map.
  Returns:
    The node at the `index`th position in the map, or `null` if that is not a valid index.

### getLength

    public int getLength()

  Description copied from interface: `org.w3c.dom.NamedNodeMap`
  The number of nodes in this map. The range of valid child node indices is `0` to `length-1` inclusive.
  Specified by:
    `getLength` in interface `org.w3c.dom.NamedNodeMap`

### getNamedItemNS

    public org.w3c.dom.Node getNamedItemNS(java.lang.String namespaceURI,
                                           java.lang.String localName)

  Description copied from interface: `org.w3c.dom.NamedNodeMap`
  Retrieves a node specified by local name and namespace URI.
  Per [XML Namespaces] , applications must use the value null as the namespaceURI parameter for methods if they wish to have no namespace.
  Specified by:
    `getNamedItemNS` in interface `org.w3c.dom.NamedNodeMap`
  Following copied from interface: `org.w3c.dom.NamedNodeMap`
  Parameters:
    `namespaceURI` - The namespace URI of the node to retrieve.
    `localName` - The local name of the node to retrieve.
  Returns:
    A `Node` (of any type) with the specified local name and namespace URI, or `null` if they do not identify any node in this map.
  Throws:
    `org.w3c.dom.DOMException` - NOT_SUPPORTED_ERR: May be raised if the implementation does not support the feature "XML" and the language exposed through the Document does not support XML Namespaces (such as [HTML 4.01]).

### setNamedItemNS

    public org.w3c.dom.Node setNamedItemNS(org.w3c.dom.Node arg)
                                    throws org.w3c.dom.DOMException

  Description copied from interface: `org.w3c.dom.NamedNodeMap`
  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. Replacing a node by itself has no effect.
  Per [XML Namespaces] , applications must use the value null as the namespaceURI parameter for methods if they wish to have no namespace.
  Specified by:
    `setNamedItemNS` in interface `org.w3c.dom.NamedNodeMap`
  Following copied from interface: `org.w3c.dom.NamedNodeMap`
  Parameters:
    `arg` - A node to store in this map. The node will later be accessible using the value of its `namespaceURI` and `localName` attributes.
  Returns:
    If the new `Node` replaces an existing node the replaced `Node` is returned, otherwise `null` is returned.
  Throws:
    `org.w3c.dom.DOMException` - WRONG_DOCUMENT_ERR: Raised if `arg` was created from a different document than the one that created this map.
    NO_MODIFICATION_ALLOWED_ERR: Raised if this map 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.
    HIERARCHY_REQUEST_ERR: Raised if an attempt is made to add a node doesn't belong in this NamedNodeMap. Examples would include trying to insert something other than an Attr node into an Element's map of attributes, or a non-Entity node into the DocumentType's map of Entities.
    NOT_SUPPORTED_ERR: May be raised if the implementation does not support the feature "XML" and the language exposed through the Document does not support XML Namespaces (such as [HTML 4.01]).

### setNamedItem

    public org.w3c.dom.Node setNamedItem(org.w3c.dom.Node arg)
                                  throws org.w3c.dom.DOMException

  Description copied from interface: `org.w3c.dom.NamedNodeMap`
  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. Replacing a node by itself has no effect.
  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.
  Specified by:
    `setNamedItem` in interface `org.w3c.dom.NamedNodeMap`
  Following copied from interface: `org.w3c.dom.NamedNodeMap`
  Parameters:
    `arg` - A node to store in this map. The node will later be accessible using the value of its `nodeName` attribute.
  Returns:
    If the new `Node` replaces an existing node the replaced `Node` is returned, otherwise `null` is returned.
  Throws:
    `org.w3c.dom.DOMException` - WRONG_DOCUMENT_ERR: Raised if `arg` was created from a different document than the one that created this map.
    NO_MODIFICATION_ALLOWED_ERR: Raised if this map 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.
    HIERARCHY_REQUEST_ERR: Raised if an attempt is made to add a node doesn't belong in this NamedNodeMap. Examples would include trying to insert something other than an Attr node into an Element's map of attributes, or a non-Entity node into the DocumentType's map of Entities.

### removeNamedItem

    public org.w3c.dom.Node removeNamedItem(java.lang.String name)
                                     throws org.w3c.dom.DOMException

  Description copied from interface: `org.w3c.dom.NamedNodeMap`
  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.
  Specified by:
    `removeNamedItem` in interface `org.w3c.dom.NamedNodeMap`
  Following copied from interface: `org.w3c.dom.NamedNodeMap`
  Parameters:
    `name` - The `nodeName` of the node to remove.
  Returns:
    The node removed from this map if a node with such a name exists.
  Throws:
    `org.w3c.dom.DOMException` - NOT_FOUND_ERR: Raised if there is no node named `name` in this map.
    NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly.

### removeNamedItemNS

    public org.w3c.dom.Node removeNamedItemNS(java.lang.String namespaceURI,
                                              java.lang.String localName)
                                       throws org.w3c.dom.DOMException

  Description copied from interface: `org.w3c.dom.NamedNodeMap`
  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.
  Per [XML Namespaces] , applications must use the value null as the namespaceURI parameter for methods if they wish to have no namespace.
  Specified by:
    `removeNamedItemNS` in interface `org.w3c.dom.NamedNodeMap`
  Following copied from interface: `org.w3c.dom.NamedNodeMap`
  Parameters:
    `namespaceURI` - The namespace URI of the node to remove.
    `localName` - The local name of the node to remove.
  Returns:
    The node removed from this map if a node with such a local name and namespace URI exists.
  Throws:
    `org.w3c.dom.DOMException` - NOT_FOUND_ERR: Raised if there is no node with the specified `namespaceURI` and `localName` in this map.
    NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly.
    NOT_SUPPORTED_ERR: May be raised if the implementation does not support the feature "XML" and the language exposed through the Document does not support XML Namespaces (such as [HTML 4.01]).

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