Package org.apache.xalan.templates

Class ElemLiteralResult.Attribute

java.lang.Object
org.apache.xalan.templates.ElemLiteralResult.Attribute
All Implemented Interfaces:
Attr, Node
Enclosing class:
ElemLiteralResult
public class ElemLiteralResult.Attribute
extends Object
implements Attr

  • Constructor Details

    • Attribute

      public Attribute​(AVT avt, Element elem)
      Construct a Attr.

  • Method Details

    • appendChild

      public Node appendChild​(Node newChild) throws DOMException
      Description copied from interface: Node
      Adds the node newChild to the end of the list of children of this node. If the newChild is already in the tree, it is first removed.
      Specified by:
      appendChild in interface Node
      Parameters:
      newChild - New node to append to the list of this node's children
      Returns:
      The node added.
      Throws:
      DOMException
      See Also:
      Node

    • cloneNode

      public Node cloneNode​(boolean deep)
      Description copied from interface: Node
      Returns a duplicate of this node, i.e., serves as a generic copy constructor for nodes. The duplicate node has no parent ( parentNode is null) and no user data. User data associated to the imported node is not carried over. However, if any UserDataHandlers has been specified along with the associated data these handlers will be called with the appropriate parameters before this method returns.
      Cloning an Element copies all attributes and their values, including those generated by the XML processor to represent defaulted attributes, but this method does not copy any children it contains unless it is a deep clone. This includes text contained in an the Element since the text is contained in a child Text node. Cloning an Attr directly, as opposed to be cloned as part of an Element cloning operation, returns a specified attribute (specified is true). Cloning an Attr always clones its children, since they represent its value, no matter whether this is a deep clone or not. Cloning an EntityReference automatically constructs its subtree if a corresponding Entity is available, no matter whether this is a deep clone or not. Cloning any other type of node simply returns a copy of this node.
      Note that cloning an immutable subtree results in a mutable copy, but the children of an EntityReference clone are readonly . In addition, clones of unspecified Attr nodes are specified. And, cloning Document, DocumentType, Entity, and Notation nodes is implementation dependent.
      Specified by:
      cloneNode in interface Node
      Parameters:
      deep - Flag indicating whether to clone deep (clone member variables)
      Returns:
      Returns a duplicate of this node
      See Also:
      Node

    • getAttributes

      public NamedNodeMap getAttributes()
      Description copied from interface: Node
      A NamedNodeMap containing the attributes of this node (if it is an Element) or null otherwise.
      Specified by:
      getAttributes in interface Node
      Returns:
      null
      See Also:
      Node

    • getChildNodes

      public NodeList getChildNodes()
      Description copied from interface: Node
      A NodeList that contains all children of this node. If there are no children, this is a NodeList containing no nodes.
      Specified by:
      getChildNodes in interface Node
      Returns:
      a NodeList containing no nodes.
      See Also:
      Node

    • getFirstChild

      public Node getFirstChild()
      Description copied from interface: Node
      The first child of this node. If there is no such node, this returns null.
      Specified by:
      getFirstChild in interface Node
      Returns:
      null
      See Also:
      Node

    • getLastChild

      public Node getLastChild()
      Description copied from interface: Node
      The last child of this node. If there is no such node, this returns null.
      Specified by:
      getLastChild in interface Node
      Returns:
      null
      See Also:
      Node

    • getLocalName

      public String getLocalName()
      Description copied from interface: Node
      Returns the local part of the qualified name of this node.
      For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as Document.createElement(), this is always null.
      Specified by:
      getLocalName in interface Node
      Returns:
      the local part of the qualified name of this node
      See Also:
      Node

    • getNamespaceURI

      public String getNamespaceURI()
      Description copied from interface: Node
      The namespace URI of this node, or null if it is unspecified (see ).
      This is not a computed value that is the result of a namespace lookup based on an examination of the namespace declarations in scope. It is merely the namespace URI given at creation time.
      For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as Document.createElement(), this is always null.

      Note: Per the Namespaces in XML Specification [XML Namespaces] an attribute does not inherit its namespace from the element it is attached to. If an attribute is not explicitly given a namespace, it simply has no namespace.

      Specified by:
      getNamespaceURI in interface Node
      Returns:
      The namespace URI of this node, or null if it is unspecified
      See Also:
      Node

    • getNextSibling

      public Node getNextSibling()
      Description copied from interface: Node
      The node immediately following this node. If there is no such node, this returns null.
      Specified by:
      getNextSibling in interface Node
      Returns:
      null
      See Also:
      Node

    • getNodeName

      public String getNodeName()
      Description copied from interface: Node
      The name of this node, depending on its type; see the table above.
      Specified by:
      getNodeName in interface Node
      Returns:
      The name of the attribute
      See Also:
      Node

    • getNodeType

      public short getNodeType()
      Description copied from interface: Node
      A code representing the type of the underlying object, as defined above.
      Specified by:
      getNodeType in interface Node
      Returns:
      The node is an Attr
      See Also:
      Node

    • getNodeValue

      public String getNodeValue() throws DOMException
      Description copied from interface: Node
      The value of this node, depending on its type; see the table above. When it is defined to be null, setting it has no effect, including if the node is read-only.
      Specified by:
      getNodeValue in interface Node
      Returns:
      The value of the attribute
      Throws:
      DOMException
      See Also:
      Node

    • getOwnerDocument

      public Document getOwnerDocument()
      Description copied from interface: Node
      The Document object associated with this node. This is also the Document object used to create new nodes. When this node is a Document or a DocumentType which is not used with any Document yet, this is null.
      Specified by:
      getOwnerDocument in interface Node
      Returns:
      null
      See Also:
      Node

    • getParentNode

      public Node getParentNode()
      Description copied from interface: Node
      The parent of this node. All nodes, except Attr, Document, DocumentFragment, Entity, and Notation may have a parent. However, if a node has just been created and not yet added to the tree, or if it has been removed from the tree, this is null.
      Specified by:
      getParentNode in interface Node
      Returns:
      the containing element node
      See Also:
      Node

    • getPrefix

      public String getPrefix()
      Description copied from interface: Node
      The namespace prefix of this node, or null if it is unspecified. When it is defined to be null, setting it has no effect, including if the node is read-only.
      Note that setting this attribute, when permitted, changes the nodeName attribute, which holds the qualified name, as well as the tagName and name attributes of the Element and Attr interfaces, when applicable.
      Setting the prefix to null makes it unspecified, setting it to an empty string is implementation dependent.
      Note also that changing the prefix of an attribute that is known to have a default value, does not make a new attribute with the default value and the original prefix appear, since the namespaceURI and localName do not change.
      For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as createElement from the Document interface, this is always null.
      Specified by:
      getPrefix in interface Node
      Returns:
      The namespace prefix of this node, or null if it is unspecified
      See Also:
      Node

    • getPreviousSibling

      public Node getPreviousSibling()
      Description copied from interface: Node
      The node immediately preceding this node. If there is no such node, this returns null.
      Specified by:
      getPreviousSibling in interface Node
      Returns:
      null
      See Also:
      Node

    • hasAttributes

      public boolean hasAttributes()
      Description copied from interface: Node
      Returns whether this node (if it is an element) has any attributes.
      Specified by:
      hasAttributes in interface Node
      Returns:
      false
      See Also:
      Node

    • hasChildNodes

      public boolean hasChildNodes()
      Description copied from interface: Node
      Returns whether this node has any children.
      Specified by:
      hasChildNodes in interface Node
      Returns:
      false
      See Also:
      Node

    • insertBefore

      public Node insertBefore​(Node newChild, Node refChild) throws DOMException
      Description copied from interface: Node
      Inserts the node newChild before the existing child node refChild. If refChild is null, insert newChild at the end of the list of children.
      If newChild is a DocumentFragment object, all of its children are inserted, in the same order, before refChild. If the newChild is already in the tree, it is first removed.

      Note: Inserting a node before itself is implementation dependent.

      Specified by:
      insertBefore in interface Node
      Parameters:
      newChild - New child node to insert
      refChild - Insert in front of this child
      Returns:
      null
      Throws:
      DOMException
      See Also:
      Node

    • isSupported

      public boolean isSupported​(String feature, String version)
      Description copied from interface: Node
      Tests whether the DOM implementation implements a specific feature and that feature is supported by this node, as specified in .
      Specified by:
      isSupported in interface Node
      Parameters:
      feature - The name of the feature to test.
      version - This is the version number of the feature to test.
      Returns:
      Returns false
      Since:
      DOM Level 2
      See Also:
      Node

    • normalize

      public void normalize()
      Description copied from interface: Node
      Puts all Text nodes in the full depth of the sub-tree underneath this Node, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates Text nodes, i.e., there are neither adjacent Text nodes nor empty Text nodes. This can be used to ensure that the DOM view of a document is the same as if it were saved and re-loaded, and is useful when operations (such as XPointer [XPointer] lookups) that depend on a particular document tree structure are to be used. If the parameter "normalize-characters" of the DOMConfiguration object attached to the Node.ownerDocument is true, this method will also fully normalize the characters of the Text nodes.

      Note: In cases where the document contains CDATASections, the normalize operation alone may not be sufficient, since XPointers do not differentiate between Text nodes and CDATASection nodes.

      Specified by:
      normalize in interface Node
      See Also:
      Node

    • removeChild

      public Node removeChild​(Node oldChild) throws DOMException
      Description copied from interface: Node
      Removes the child node indicated by oldChild from the list of children, and returns it.
      Specified by:
      removeChild in interface Node
      Parameters:
      oldChild - Child to be removed
      Returns:
      null
      Throws:
      DOMException
      See Also:
      Node

    • replaceChild

      public Node replaceChild​(Node newChild, Node oldChild) throws DOMException
      Description copied from interface: Node
      Replaces the child node oldChild with newChild in the list of children, and returns the oldChild node.
      If newChild is a DocumentFragment object, oldChild is replaced by all of the DocumentFragment children, which are inserted in the same order. If the newChild is already in the tree, it is first removed.

      Note: Replacing a node with itself is implementation dependent.

      Specified by:
      replaceChild in interface Node
      Parameters:
      newChild - Replace existing child with this one
      oldChild - Existing child to be replaced
      Returns:
      null
      Throws:
      DOMException
      See Also:
      Node

    • setNodeValue

      public void setNodeValue​(String nodeValue) throws DOMException
      Description copied from interface: Node
      The value of this node, depending on its type; see the table above. When it is defined to be null, setting it has no effect, including if the node is read-only.
      Specified by:
      setNodeValue in interface Node
      Parameters:
      nodeValue - Value to set this node to
      Throws:
      DOMException
      See Also:
      Node

    • setPrefix

      public void setPrefix​(String prefix) throws DOMException
      Description copied from interface: Node
      The namespace prefix of this node, or null if it is unspecified. When it is defined to be null, setting it has no effect, including if the node is read-only.
      Note that setting this attribute, when permitted, changes the nodeName attribute, which holds the qualified name, as well as the tagName and name attributes of the Element and Attr interfaces, when applicable.
      Setting the prefix to null makes it unspecified, setting it to an empty string is implementation dependent.
      Note also that changing the prefix of an attribute that is known to have a default value, does not make a new attribute with the default value and the original prefix appear, since the namespaceURI and localName do not change.
      For nodes of any type other than ELEMENT_NODE and ATTRIBUTE_NODE and nodes created with a DOM Level 1 method, such as createElement from the Document interface, this is always null.
      Specified by:
      setPrefix in interface Node
      Parameters:
      prefix - Prefix to set for this node
      Throws:
      DOMException
      See Also:
      Node

    • getName

      public String getName()
      Description copied from interface: Attr
      Returns the name of this attribute. If Node.localName is different from null, this attribute is a qualified name.
      Specified by:
      getName in interface Attr
      Returns:
      The name of this attribute

    • getValue

      public String getValue()
      Description copied from interface: Attr
      On retrieval, the value of the attribute is returned as a string. Character and general entity references are replaced with their values. See also the method getAttribute on the Element interface.
      On setting, this creates a Text node with the unparsed contents of the string, i.e. any characters that an XML processor would recognize as markup are instead treated as literal text. See also the method Element.setAttribute().
      Some specialized implementations, such as some [SVG 1.1] implementations, may do normalization automatically, even after mutation; in such case, the value on retrieval may differ from the value on setting.
      Specified by:
      getValue in interface Attr
      Returns:
      The value of this attribute returned as string

    • getOwnerElement

      public Element getOwnerElement()
      Description copied from interface: Attr
      The Element node this attribute is attached to or null if this attribute is not in use.
      Specified by:
      getOwnerElement in interface Attr
      Returns:
      The Element node this attribute is attached to or null if this attribute is not in use

    • getSpecified

      public boolean getSpecified()
      Description copied from interface: Attr
      True if this attribute was explicitly given a value in the instance document, false otherwise. If the application changed the value of this attribute node (even if it ends up having the same value as the default value) then it is set to true. The implementation may handle attributes with default values from other schemas similarly but applications should use Document.normalizeDocument() to guarantee this information is up-to-date.
      Specified by:
      getSpecified in interface Attr
      Returns:
      true

    • setValue

      public void setValue​(String value) throws DOMException
      Description copied from interface: Attr
      On retrieval, the value of the attribute is returned as a string. Character and general entity references are replaced with their values. See also the method getAttribute on the Element interface.
      On setting, this creates a Text node with the unparsed contents of the string, i.e. any characters that an XML processor would recognize as markup are instead treated as literal text. See also the method Element.setAttribute().
      Some specialized implementations, such as some [SVG 1.1] implementations, may do normalization automatically, even after mutation; in such case, the value on retrieval may differ from the value on setting.
      Specified by:
      setValue in interface Attr
      Parameters:
      value - Value to set this node to
      Throws:
      DOMException
      See Also:
      Attr

    • getSchemaTypeInfo

      public TypeInfo getSchemaTypeInfo()
      Description copied from interface: Attr
      The type information associated with this attribute. While the type information contained in this attribute is guarantee to be correct after loading the document or invoking Document.normalizeDocument(), schemaTypeInfo may not be reliable if the node was moved.
      Specified by:
      getSchemaTypeInfo in interface Attr

    • isId

      public boolean isId()
      Description copied from interface: Attr
      Returns whether this attribute is known to be of type ID (i.e. to contain an identifier for its owner element) or not. When it is and its value is unique, the ownerElement of this attribute can be retrieved using the method Document.getElementById . The implementation could use several ways to determine if an attribute node is known to contain an identifier:
      • If validation occurred using an XML Schema [XML Schema Part 1] while loading the document or while invoking Document.normalizeDocument(), the post-schema-validation infoset contributions (PSVI contributions) values are used to determine if this attribute is a schema-determined ID attribute using the schema-determined ID definition in [XPointer] .
      • If validation occurred using a DTD while loading the document or while invoking Document.normalizeDocument(), the infoset [type definition] value is used to determine if this attribute is a DTD-determined ID attribute using the DTD-determined ID definition in [XPointer] .
      • from the use of the methods Element.setIdAttribute(), Element.setIdAttributeNS(), or Element.setIdAttributeNode(), i.e. it is an user-determined ID attribute;

        Note: XPointer framework (see section 3.2 in [XPointer] ) consider the DOM user-determined ID attribute as being part of the XPointer externally-determined ID definition.

      • using mechanisms that are outside the scope of this specification, it is then an externally-determined ID attribute. This includes using schema languages different from XML schema and DTD.

      If validation occurred while invoking Document.normalizeDocument(), all user-determined ID attributes are reset and all attribute nodes ID information are then reevaluated in accordance to the schema used. As a consequence, if the Attr.schemaTypeInfo attribute contains an ID type, isId will always return true.
      Specified by:
      isId in interface Attr

    • setUserData

      public Object setUserData​(String key, Object data, UserDataHandler handler)
      Description copied from interface: Node
      Associate an object to a key on this node. The object can later be retrieved from this node by calling getUserData with the same key.
      Specified by:
      setUserData in interface Node
      Parameters:
      key - The key to associate the object to.
      data - The object to associate to the given key, or null to remove any existing association to that key.
      handler - The handler to associate to that key, or null.
      Returns:
      Returns the DOMUserData previously associated to the given key on this node, or null if there was none.

    • getUserData

      public Object getUserData​(String key)
      Description copied from interface: Node
      Retrieves the object associated to a key on a this node. The object must first have been set to this node by calling setUserData with the same key.
      Specified by:
      getUserData in interface Node
      Parameters:
      key - The key the object is associated to.
      Returns:
      Returns the DOMUserData associated to the given key on this node, or null if there was none.

    • getFeature

      public Object getFeature​(String feature, String version)
      Description copied from interface: Node
      This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in . The specialized object may also be obtained by using binding-specific casting methods but is not necessarily expected to, as discussed in . This method also allow the implementation to provide specialized objects which do not support the Node interface.
      Specified by:
      getFeature in interface Node
      Parameters:
      feature - The name of the feature requested. Note that any plus sign "+" prepended to the name of the feature will be ignored since it is not significant in the context of this method.
      version - This is the version number of the feature to test.
      Returns:
      Returns an object which implements the specialized APIs of the specified feature and version, if any, or null if there is no object which implements interfaces associated with that feature. If the DOMObject returned by this method implements the Node interface, it must delegate to the primary core Node and not return results inconsistent with the primary core Node such as attributes, childNodes, etc.

    • isEqualNode

      public boolean isEqualNode​(Node arg)
      Description copied from interface: Node
      Tests whether two nodes are equal.
      This method tests for equality of nodes, not sameness (i.e., whether the two nodes are references to the same object) which can be tested with Node.isSameNode(). All nodes that are the same will also be equal, though the reverse may not be true.
      Two nodes are equal if and only if the following conditions are satisfied:
      • The two nodes are of the same type.
      • The following string attributes are equal: nodeName, localName, namespaceURI, prefix, nodeValue . This is: they are both null, or they have the same length and are character for character identical.
      • The attributes NamedNodeMaps are equal. This is: they are both null, or they have the same length and for each node that exists in one map there is a node that exists in the other map and is equal, although not necessarily at the same index.
      • The childNodes NodeLists are equal. This is: they are both null, or they have the same length and contain equal nodes at the same index. Note that normalization can affect equality; to avoid this, nodes should be normalized before being compared.

      For two DocumentType nodes to be equal, the following conditions must also be satisfied:
      • The following string attributes are equal: publicId, systemId, internalSubset.
      • The entities NamedNodeMaps are equal.
      • The notations NamedNodeMaps are equal.

      On the other hand, the following do not affect equality: the ownerDocument, baseURI, and parentNode attributes, the specified attribute for Attr nodes, the schemaTypeInfo attribute for Attr and Element nodes, the Text.isElementContentWhitespace attribute for Text nodes, as well as any user data or event listeners registered on the nodes.

      Note: As a general rule, anything not mentioned in the description above is not significant in consideration of equality checking. Note that future versions of this specification may take into account more attributes and implementations conform to this specification are expected to be updated accordingly.

      Specified by:
      isEqualNode in interface Node
      Parameters:
      arg - The node to compare equality with.
      Returns:
      Returns true if the nodes are equal, false otherwise.

    • lookupNamespaceURI

      public String lookupNamespaceURI​(String specifiedPrefix)
      Description copied from interface: Node
      Look up the namespace URI associated to the given prefix, starting from this node.
      See for details on the algorithm used by this method.
      Specified by:
      lookupNamespaceURI in interface Node
      Parameters:
      specifiedPrefix - The prefix to look for. If this parameter is null, the method will return the default namespace URI if any.
      Returns:
      Returns the associated namespace URI or null if none is found.

    • isDefaultNamespace

      public boolean isDefaultNamespace​(String namespaceURI)
      Description copied from interface: Node
      This method checks if the specified namespaceURI is the default namespace or not.
      Specified by:
      isDefaultNamespace in interface Node
      Parameters:
      namespaceURI - The namespace URI to look for.
      Returns:
      Returns true if the specified namespaceURI is the default namespace, false otherwise.

    • lookupPrefix

      public String lookupPrefix​(String namespaceURI)
      Description copied from interface: Node
      Look up the prefix associated to the given namespace URI, starting from this node. The default namespace declarations are ignored by this method.
      See for details on the algorithm used by this method.
      Specified by:
      lookupPrefix in interface Node
      Parameters:
      namespaceURI - The namespace URI to look for.
      Returns:
      Returns an associated namespace prefix if found or null if none is found. If more than one prefix are associated to the namespace prefix, the returned namespace prefix is implementation dependent.

    • isSameNode

      public boolean isSameNode​(Node other)
      Description copied from interface: Node
      Returns whether this node is the same node as the given one.
      This method provides a way to determine whether two Node references returned by the implementation reference the same object. When two Node references are references to the same object, even if through a proxy, the references may be used completely interchangeably, such that all attributes have the same values and calling the same DOM method on either reference always has exactly the same effect.
      Specified by:
      isSameNode in interface Node
      Parameters:
      other - The node to test against.
      Returns:
      Returns true if the nodes are the same, false otherwise.

    • setTextContent

      public void setTextContent​(String textContent) throws DOMException
      Description copied from interface: Node
      This attribute returns the text content of this node and its descendants. When it is defined to be null, setting it has no effect. On setting, any possible children this node may have are removed and, if it the new string is not empty or null, replaced by a single Text node containing the string this attribute is set to.
      On getting, no serialization is performed, the returned string does not contain any markup. No whitespace normalization is performed and the returned string does not contain the white spaces in element content (see the attribute Text.isElementContentWhitespace). Similarly, on setting, no parsing is performed either, the input string is taken as pure textual content.
      The string returned is made of the text content of this node depending on its type, as defined below:
      Node type Content
      ELEMENT_NODE, ATTRIBUTE_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, DOCUMENT_FRAGMENT_NODE concatenation of the textContent attribute value of every child node, excluding COMMENT_NODE and PROCESSING_INSTRUCTION_NODE nodes. This is the empty string if the node has no children.
      TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE, PROCESSING_INSTRUCTION_NODE nodeValue
      DOCUMENT_NODE, DOCUMENT_TYPE_NODE, NOTATION_NODE null
      Specified by:
      setTextContent in interface Node
      Throws:
      DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.

    • getTextContent

      public String getTextContent() throws DOMException
      Description copied from interface: Node
      This attribute returns the text content of this node and its descendants. When it is defined to be null, setting it has no effect. On setting, any possible children this node may have are removed and, if it the new string is not empty or null, replaced by a single Text node containing the string this attribute is set to.
      On getting, no serialization is performed, the returned string does not contain any markup. No whitespace normalization is performed and the returned string does not contain the white spaces in element content (see the attribute Text.isElementContentWhitespace). Similarly, on setting, no parsing is performed either, the input string is taken as pure textual content.
      The string returned is made of the text content of this node depending on its type, as defined below:
      Node type Content
      ELEMENT_NODE, ATTRIBUTE_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, DOCUMENT_FRAGMENT_NODE concatenation of the textContent attribute value of every child node, excluding COMMENT_NODE and PROCESSING_INSTRUCTION_NODE nodes. This is the empty string if the node has no children.
      TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE, PROCESSING_INSTRUCTION_NODE nodeValue
      DOCUMENT_NODE, DOCUMENT_TYPE_NODE, NOTATION_NODE null
      Specified by:
      getTextContent in interface Node
      Throws:
      DOMException - DOMSTRING_SIZE_ERR: Raised when it would return more characters than fit in a DOMString variable on the implementation platform.

    • compareDocumentPosition

      public short compareDocumentPosition​(Node other) throws DOMException
      Description copied from interface: Node
      Compares the reference node, i.e. the node on which this method is being called, with a node, i.e. the one passed as a parameter, with regard to their position in the document and according to the document order.
      Specified by:
      compareDocumentPosition in interface Node
      Parameters:
      other - The node to compare against the reference node.
      Returns:
      Returns how the node is positioned relatively to the reference node.
      Throws:
      DOMException - NOT_SUPPORTED_ERR: when the compared nodes are from different DOM implementations that do not coordinate to return consistent implementation-specific results.

    • getBaseURI

      public String getBaseURI()
      Description copied from interface: Node
      The absolute base URI of this node or null if the implementation wasn't able to obtain an absolute URI. This value is computed as described in . However, when the Document supports the feature "HTML" [DOM Level 2 HTML] , the base URI is computed using first the value of the href attribute of the HTML BASE element if any, and the value of the documentURI attribute from the Document interface otherwise.
      Specified by:
      getBaseURI in interface Node