# Interface XPathNamespace

All Superinterfaces:
  `Node`

public interface XPathNamespace extends Node
The `XPathNamespace` interface is returned by `XPathResult` interfaces to represent the XPath namespace node type that DOM lacks. There is no public constructor for this node type. Attempts to place it into a hierarchy or a NamedNodeMap result in a `DOMException` with the code `HIERARCHY_REQUEST_ERR` . This node is read only, so methods or setting of attributes that would mutate the node result in a DOMException with the code `NO_MODIFICATION_ALLOWED_ERR`.

The core specification describes attributes of the `Node` interface that are different for different node node types but does not describe `XPATH_NAMESPACE_NODE`, so here is a description of those attributes for this node type. All attributes of `Node` not described in this section have a `null` or `false` value.

`ownerDocument` matches the `ownerDocument` of the `ownerElement` even if the element is later adopted.

`prefix` is the prefix of the namespace represented by the node.

`nodeName` is the same as `prefix`.

`nodeType` is equal to `XPATH_NAMESPACE_NODE`.

`namespaceURI` is the namespace URI of the namespace represented by the node.

`adoptNode`, `cloneNode`, and `importNode` fail on this node type by raising a `DOMException` with the code `NOT_SUPPORTED_ERR`.In future versions of the XPath specification, the definition of a namespace node may be changed incomatibly, in which case incompatible changes to field values may be required to implement versions beyond XPath 1.0.

See also the Document Object Model (DOM) Level 3 XPath Specification.

Since:
  1.4, DOM Level 3

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final short`
  `XPATH_NAMESPACE_NODE`
  The node is a `Namespace`.

  ### Fields declared in interface Node

  `ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_POSITION_CONTAINED_BY, DOCUMENT_POSITION_CONTAINS, DOCUMENT_POSITION_DISCONNECTED, DOCUMENT_POSITION_FOLLOWING, DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, DOCUMENT_POSITION_PRECEDING, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Element`
  `getOwnerElement()`
  The `Element` on which the namespace was in scope when it was requested.

  ### Methods declared in interface Node

  `appendChild, cloneNode, compareDocumentPosition, getAttributes, getBaseURI, getChildNodes, getFeature, getFirstChild, getLastChild, getLocalName, getNamespaceURI, getNextSibling, getNodeName, getNodeType, getNodeValue, getOwnerDocument, getParentNode, getPrefix, getPreviousSibling, getTextContent, getUserData, hasAttributes, hasChildNodes, insertBefore, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, removeChild, replaceChild, setNodeValue, setPrefix, setTextContent, setUserData`

- ## Field Details

  - ### XPATH_NAMESPACE_NODE

    static final short XPATH_NAMESPACE_NODE
    The node is a `Namespace`.
    See Also:
      - Constant Field Values

- ## Method Details

  - ### getOwnerElement

    Element getOwnerElement()
    The `Element` on which the namespace was in scope when it was requested. This does not change on a returned namespace node even if the document changes such that the namespace goes out of scope on that element and this node is no longer found there by XPath.