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Oracle® XML API Reference
10g Release 1 (10.1)

Part Number B10789-01
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ElementRef Interface

Table 15-14 summarizes the methods of available through ElementRef interface.

Table 15-14 Summary of ElementRef Methods; Dom Package

Function Summary
ElementRef
Constructor.
getAttribute
Get attribute's value given its name.
getAttributeNS
Get attribute's value given its URI and local name.
getAttributeNode
Get the attribute node given its name.
getElementsByTagName
Get elements with given tag name.
getTagName
Get element's tag name.
hasAttribute
Check if named attribute exists.
hasAttributeNS
Check if named attribute exists (namespace aware version).
removeAttribute
Remove attribute with specified name.
removeAttributeNS
Remove attribute with specified URI and local name.
removeAttributeNode
Remove attribute node
setAttribute
Set new attribute for this element and/or new value.
setAttributeNS
Set new attribute for the element and/or new value.
setAttributeNode
Set attribute node.
~ElementRef
Public default destructor.


ElementRef

Class constructor.

Syntax Description
ElementRef(
   const NodeRef< Node>& node_ref,
   Node* nptr);
Used to create references to a given element node after a call to createElement.
ElementRef(
   const ElementRef< Node>& node_ref);
Copy constructor.

Parameter Description
node_ref
reference to provide the context
nptr
referenced node


Returns

(ElementRef) Node reference object


getAttribute

Returns the value of an element's attribute (specified by name). Note that an attribute may have the empty string as its value, but cannot be NULL.


Syntax
oratext* getAttribute(
   oratext* name) const;

Parameter Description
name
name of attribute (data encoding)


Returns

(oratext*) named attribute's value (in data encoding)


getAttributeNS

Returns the value of an element's attribute (specified by URI and local name). Note that an attribute may have the empty string as its value, but cannot be NULL.


Syntax
oratext* getAttributeNS(
   oratext* namespaceURI,
   oratext* localName);

Parameter Description
namespaceURI
namespace URI of attribute (data encoding)
localName
local name of attribute (data encoding)


Returns

(oratext *) named attribute's value (in data encoding)


getAttributeNode

Returns the attribute node given its name.


Syntax
Node* getAttributeNode(
   oratext* name) const;

Parameter Description
name
name of attribute (data encoding)


Returns

(Node*) the attribute node


getElementsByTagName

Returns a list of all elements with a given tag name, in the order in which they would be encountered in a preorder traversal of the subtree. The tag name should be in the data encoding. The special name "*" matches all tag names; a NULL name matches nothing. Tag names are case sensitive. This function is not namespace aware; the full tag names are compared. The returned list should be freed by the user.


Syntax
NodeList< Node>* getElementsByTagName(
   oratext* name);

Parameter Description
name
tag name to match (data encoding)


Returns

(NodeList< Node>*) the list of elements


getTagName

Returns the tag name of an element node which is supposed to have the same value as the node name from the node interface


Syntax
oratext* getTagName() const;


Returns

(oratext*) element's name [in data encoding]


hasAttribute

Determines if an element has a attribute with the given name


Syntax
boolean hasAttribute(
   oratext* name);

Parameter Description
name
name of attribute (data encoding)


Returns

(boolean) TRUE if element has attribute with given name


hasAttributeNS

Determines if an element has a attribute with the given URI and local name


Syntax
boolean hasAttributeNS(
   oratext* namespaceURI,
   oratext* localName);

Parameter Description
namespaceURI
namespace URI of attribute (data encoding)
localName
local name of attribute (data encoding)


Returns

(boolean) TRUE if element has such attribute


removeAttribute

Removes an attribute specified by name. The attribute is removed from the element's list of attributes, but the attribute node itself is not destroyed.


Syntax
void removeAttribute(
   oratext* name) throw (DOMException);

Parameter Description
name
name of attribute (data encoding)


removeAttributeNS

Removes an attribute specified by URI and local name. The attribute is removed from the element's list of attributes, but the attribute node itself is not destroyed.


Syntax
void removeAttributeNS(
   oratext* namespaceURI,
   oratext* localName)
throw (DOMException);

Parameter Description
namespaceURI
namespace URI of attribute (data encoding)
localName
local name of attribute (data encoding)


removeAttributeNode

Removes an attribute from an element. Returns a pointer to the removed attribute or NULL


Syntax
Node* removeAttributeNode(
   AttrRef< Node>& oldAttr)
throw (DOMException);

Parameter Description
oldAttr
old attribute node


Returns

(Node*) the attribute node (old) or NULL


setAttribute

Creates a new attribute for an element with the given name and value (which should be in the data encoding). If the named attribute already exists, its value is simply replaced. The name and value are not verified, converted, or checked. The value is not parsed, so entity references will not be expanded.


Syntax
void setAttribute( 
   oratext* name, 
   oratext* value)
throw (DOMException);

Parameter Description
name
names of attribute (data encoding)
value
value of attribute (data encoding)


setAttributeNS

Creates a new attribute for an element with the given URI, local name and value (which should be in the data encoding). If the named attribute already exists, its value is simply replaced. The name and value are not verified, converted, or checked. The value is not parsed, so entity references will not be expanded.


Syntax
void setAttributeNS( 
   oratext* namespaceURI,
   oratext* qualifiedName, 
   oratext* value)
throw (DOMException);

Parameter Description
namespaceURI
namespace URI of attribute (data encoding)
qualifiedName
qualified name of attribute(data encoding)
value
value of attribute(data encoding)


setAttributeNode

Adds a new attribute to an element. If an attribute with the given name already exists, it is replaced and a pointer to the old attribute returned. If the attribute is new, it is added to the element's list and a pointer to the new attribute is returned.


Syntax
Node* setAttributeNode( 
   AttrRef< Node>& newAttr)
throw (DOMException);

Parameter Description
newAttr
new node


Returns

(Node*) the attribute node (old or new)


~ElementRef

This is the default destructor.


Syntax
~ElementRef();