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Java Source Code / Java Documentation » Web Server » Rimfaxe Web Server » org.w3c.dom 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.w3c.dom.Element

All known Subclasses:   com.rimfaxe.xml.compatibility.ElementImpl,  org.apache.xerces.dom.ElementImpl,
Element
public interface Element extends Node(Code)
The Element interface represents an element in an HTML or XML document. Elements may have attributes associated with them; since the Element interface inherits from Node, the generic Node interface attribute attributes may be used to retrieve the set of all attributes for an element. There are methods on the Element interface to retrieve either an Attr object by name or an attribute value by name. In XML, where an attribute value may contain entity references, an Attr object should be retrieved to examine the possibly fairly complex sub-tree representing the attribute value. On the other hand, in HTML, where all attributes have simple string values, methods to directly access an attribute value can safely be used as a convenience.In DOM Level 2, the method normalize is inherited from the Node interface where it was moved.

See also the Document Object Model (DOM) Level 2 Core Specification.





Method Summary
public  StringgetAttribute(String name)
     Retrieves an attribute value by name.
Parameters:
  name - The name of the attribute to retrieve.
public  StringgetAttributeNS(String namespaceURI, String localName)
     Retrieves an attribute value by local name and namespace URI.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes.
public  AttrgetAttributeNode(String name)
     Retrieves an attribute node by name.
To retrieve an attribute node by qualified name and namespace URI, use the getAttributeNodeNS method.
Parameters:
  name - The name (nodeName) of the attribute to retrieve.
public  AttrgetAttributeNodeNS(String namespaceURI, String localName)
     Retrieves an Attr node by local name and namespace URI.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes.
public  NodeListgetElementsByTagName(String name)
     Returns a NodeList of all descendant Elements with a given tag name, in the order in which they are encountered in a preorder traversal of this Element tree.
Parameters:
  name - The name of the tag to match on.
public  NodeListgetElementsByTagNameNS(String namespaceURI, String localName)
     Returns a NodeList of all the descendant Elements with a given local name and namespace URI in the order in which they are encountered in a preorder traversal of this Element tree.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes.
public  StringgetTagName()
     The name of the element.
public  booleanhasAttribute(String name)
     Returns true when an attribute with a given name is specified on this element or has a default value, false otherwise.
Parameters:
  name - The name of the attribute to look for.
public  booleanhasAttributeNS(String namespaceURI, String localName)
     Returns true when an attribute with a given local name and namespace URI is specified on this element or has a default value, false otherwise.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes.
public  voidremoveAttribute(String name)
     Removes an attribute by name.
public  voidremoveAttributeNS(String namespaceURI, String localName)
     Removes an attribute by local name and namespace URI.
public  AttrremoveAttributeNode(Attr oldAttr)
     Removes the specified attribute node.
public  voidsetAttribute(String name, String value)
     Adds a new attribute.
public  voidsetAttributeNS(String namespaceURI, String qualifiedName, String value)
     Adds a new attribute.
public  AttrsetAttributeNode(Attr newAttr)
     Adds a new attribute node.
public  AttrsetAttributeNodeNS(Attr newAttr)
     Adds a new attribute.



Method Detail
getAttribute
public String getAttribute(String name)(Code)
Retrieves an attribute value by name.
Parameters:
  name - The name of the attribute to retrieve. The Attr value as a string, or the empty string if that attribute does not have a specified or default value.



getAttributeNS
public String getAttributeNS(String namespaceURI, String localName)(Code)
Retrieves an attribute value by local name and namespace URI.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes. Hence, if you specify a non-null namespace URI, these DOMs will never find a matching node.
Parameters:
  namespaceURI - The namespace URI of the attribute to retrieve.
Parameters:
  localName - The local name of the attribute to retrieve. The Attr value as a string, or the empty string if that attribute does not have a specified or default value.
since:
   DOM Level 2



getAttributeNode
public Attr getAttributeNode(String name)(Code)
Retrieves an attribute node by name.
To retrieve an attribute node by qualified name and namespace URI, use the getAttributeNodeNS method.
Parameters:
  name - The name (nodeName) of the attribute to retrieve. The Attr node with the specified name (nodeName) or null if there is no such attribute.



getAttributeNodeNS
public Attr getAttributeNodeNS(String namespaceURI, String localName)(Code)
Retrieves an Attr node by local name and namespace URI.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes. Hence, if you specify a non-null namespace URI, these DOMs will never find a matching node.
Parameters:
  namespaceURI - The namespace URI of the attribute to retrieve.
Parameters:
  localName - The local name of the attribute to retrieve. The Attr node with the specified attribute local name and namespace URI or null if there is no such attribute.
since:
   DOM Level 2



getElementsByTagName
public NodeList getElementsByTagName(String name)(Code)
Returns a NodeList of all descendant Elements with a given tag name, in the order in which they are encountered in a preorder traversal of this Element tree.
Parameters:
  name - The name of the tag to match on. The special value "*" matches all tags. A list of matching Element nodes.



getElementsByTagNameNS
public NodeList getElementsByTagNameNS(String namespaceURI, String localName)(Code)
Returns a NodeList of all the descendant Elements with a given local name and namespace URI in the order in which they are encountered in a preorder traversal of this Element tree.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes. Hence, if you specify a non-null namespace URI, these DOMs will never find a matching node.
Parameters:
  namespaceURI - The namespace URI of the elements to match on. The special value "*" matches all namespaces.
Parameters:
  localName - The local name of the elements to match on. The special value "*" matches all local names. A new NodeList object containing all the matched Elements.
since:
   DOM Level 2



getTagName
public String getTagName()(Code)
The name of the element. For example, in:
 <elementExample 
 id="demo"> ... </elementExample> , 
tagName has the value "elementExample". Note that this is case-preserving in XML, as are all of the operations of the DOM. The HTML DOM returns the tagName of an HTML element in the canonical uppercase form, regardless of the case in the source HTML document.



hasAttribute
public boolean hasAttribute(String name)(Code)
Returns true when an attribute with a given name is specified on this element or has a default value, false otherwise.
Parameters:
  name - The name of the attribute to look for. true if an attribute with the given name is specified on this element or has a default value, falseotherwise.
since:
   DOM Level 2



hasAttributeNS
public boolean hasAttributeNS(String namespaceURI, String localName)(Code)
Returns true when an attribute with a given local name and namespace URI is specified on this element or has a default value, false otherwise.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes. Hence, if you specify a non-null namespace URI, these DOMs will never find a matching node.
Parameters:
  namespaceURI - The namespace URI of the attribute to look for.
Parameters:
  localName - The local name of the attribute to look for. true if an attribute with the given local name and namespace URI is specified or has a default value on this element, false otherwise.
since:
   DOM Level 2



removeAttribute
public void removeAttribute(String name) throws DOMException(Code)
Removes an attribute by name. 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.
To remove an attribute by local name and namespace URI, use the removeAttributeNS method.
Parameters:
  name - The name of the attribute to remove.
exception:
  DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.



removeAttributeNS
public void removeAttributeNS(String namespaceURI, String localName) throws DOMException(Code)
Removes an attribute by local name and namespace URI. If the removed attribute has a default value it is immediately replaced. The replacing attribute has the same namespace URI and local name, as well as the original prefix.
Documents which do not support the "XML" feature will permit only the DOM Level 1 calls for creating/setting elements and attributes. Hence, if you specify a non-null namespace URI, these DOMs will never find a matching node.
Parameters:
  namespaceURI - The namespace URI of the attribute to remove.
Parameters:
  localName - The local name of the attribute to remove.
exception:
  DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
since:
   DOM Level 2



removeAttributeNode
public Attr removeAttributeNode(Attr oldAttr) throws DOMException(Code)
Removes the specified attribute node. If the removed Attr has a default value it is immediately replaced. The replacing attribute has the same namespace URI and local name, as well as the original prefix, when applicable.
Parameters:
  oldAttr - The Attr node to remove from the attribute list. The Attr node that was removed.
exception:
  DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
NOT_FOUND_ERR: Raised if oldAttr is not an attribute of the element.



setAttribute
public void setAttribute(String name, String value) throws DOMException(Code)
Adds a new attribute. If an attribute with that name is already present in the element, its value is changed to be that of the value parameter. This value is a simple string; it is not parsed as it is being set. So any markup (such as syntax to be recognized as an entity reference) is treated as literal text, and needs to be appropriately escaped by the implementation when it is written out. In order to assign an attribute value that contains entity references, the user must create an Attr node plus any Text and EntityReference nodes, build the appropriate subtree, and use setAttributeNode to assign it as the value of an attribute.
To set an attribute with a qualified name and namespace URI, use the setAttributeNS method.
Parameters:
  name - The name of the attribute to create or alter.
Parameters:
  value - Value to set in string form.
exception:
  DOMException - INVALID_CHARACTER_ERR: Raised if the specified name contains an illegal character.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.



setAttributeNS
public void setAttributeNS(String namespaceURI, String qualifiedName, String value) throws DOMException(Code)
Adds a new attribute. If an attribute with the same local name and namespace URI is already present on the element, its prefix is changed to be the prefix part of the qualifiedName, and its value is changed to be the value parameter. This value is a simple string; it is not parsed as it is being set. So any markup (such as syntax to be recognized as an entity reference) is treated as literal text, and needs to be appropriately escaped by the implementation when it is written out. In order to assign an attribute value that contains entity references, the user must create an Attr node plus any Text and EntityReference nodes, build the appropriate subtree, and use setAttributeNodeNS or setAttributeNode to assign it as the value of an attribute.
Parameters:
  namespaceURI - The namespace URI of the attribute to create or alter.
Parameters:
  qualifiedName - The qualified name of the attribute to create or alter.
Parameters:
  value - The value to set in string form.
exception:
  DOMException - INVALID_CHARACTER_ERR: Raised if the specified qualified name contains an illegal character, per the XML 1.0 specification .
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
NAMESPACE_ERR: Raised if the qualifiedName is malformed per the Namespaces in XML specification, if the qualifiedName has a prefix and the namespaceURI is null, if the qualifiedName has a prefix that is "xml" and the namespaceURI is different from "http://www.w3.org/XML/1998/namespace", or if the qualifiedName, or its prefix, is "xmlns" and the namespaceURI is different from "http://www.w3.org/2000/xmlns/".
NOT_SUPPORTED_ERR: Always thrown if the current document does not support the "XML" feature, since namespaces were defined by XML.
since:
   DOM Level 2



setAttributeNode
public Attr setAttributeNode(Attr newAttr) throws DOMException(Code)
Adds a new attribute node. If an attribute with that name ( nodeName) is already present in the element, it is replaced by the new one.
To add a new attribute node with a qualified name and namespace URI, use the setAttributeNodeNS method.
Parameters:
  newAttr - The Attr node to add to the attribute list. If the newAttr attribute replaces an existing attribute, the replaced Attr node is returned, otherwise null is returned.
exception:
  DOMException - WRONG_DOCUMENT_ERR: Raised if newAttr was created from a different document than the one that created the element.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
INUSE_ATTRIBUTE_ERR: Raised if newAttr is already an attribute of another Element object. The DOM user must explicitly clone Attr nodes to re-use them in other elements.



setAttributeNodeNS
public Attr setAttributeNodeNS(Attr newAttr) throws DOMException(Code)
Adds a new attribute. If an attribute with that local name and that namespace URI is already present in the element, it is replaced by the new one.
Parameters:
  newAttr - The Attr node to add to the attribute list. If the newAttr attribute replaces an existing attribute with the same local name and namespace URI, the replaced Attr node is returned, otherwise null is returned.
exception:
  DOMException - WRONG_DOCUMENT_ERR: Raised if newAttr was created from a different document than the one that created the element.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
INUSE_ATTRIBUTE_ERR: Raised if newAttr is already an attribute of another Element object. The DOM user must explicitly clone Attr nodes to re-use them in other elements.
NOT_SUPPORTED_ERR: Always thrown if the current document does not support the "XML" feature, since namespaces were defined by XML.
since:
   DOM Level 2



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