public interface XPathExpression
XPathExpression
interface represents a parsed and resolved
XPath expression.
See also the Document Object Model (DOM) Level 3 XPath Specification.
java.lang.Object evaluate(Node contextNode, short type, java.lang.Object result) throws XPathException, DOMException
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
.
XPathExpression
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