org.w3c.dom.xpath.XPathExpression |
The XPathExpression
interface represents a parsed and resolved
XPath expression.
See also the Document Object Model (DOM) Level 3 XPath Specification.
Public Methods | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Evaluates this XPath expression and returns a result.
|
Evaluates this XPath expression and returns a result.
contextNode | The context is context node for the
evaluation of this XPath expression.If the XPathEvaluator was
obtained by casting the Document then this must be
owned by the same document and must be a Document ,
Element , Attribute , Text ,
CDATASection , Comment ,
ProcessingInstruction , or XPathNamespace
node.If the context node is a Text or a
CDATASection , then the context is interpreted as the
whole logical text node as seen by XPath, unless the node is empty
in which case it may not serve as the XPath context. |
---|---|
type | If a specific type is specified, then the
result will be coerced to return the specified type relying on
XPath conversions and fail if the desired coercion is not possible.
This must be one of the type codes of XPathResult . |
result | The result specifies a specific result
object which may be reused and returned by this method. If this is
specified as null or the implementation does not reuse
the specified result, a new result object will be constructed and
returned.For XPath 1.0 results, this object will be of type
XPathResult . |
XPathResult
.XPathException | TYPE_ERR: Raised if the result cannot be converted to return the specified type. |
---|---|
DOMException | WRONG_DOCUMENT_ERR: The Node is from a document that is not supported
by the XPathEvaluator that created this XPathExpression
.
NOT_SUPPORTED_ERR: The Node is not a type permitted as an XPath context node or the request type is not permitted by this XPathExpression .
|