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DOM Level 3 WD Experimental: The DOM Level 3 specification is at the stage of Working Draft, which represents work in progress and thus may be updated, replaced, or obsoleted by other documents at any time.
The XPathExpression
interface represents a parsed and resolved
XPath expression.The evaluateExpression method should be moved to the
XPathExpression interface so you do not have to use / pass two interfaces
just to use it.Done.XPathExpression should have a public reference to the
XPathEvaluator that created it.No change.Lacks justification.
See also the Document Object Model (DOM) Level 3 XPath Specification.
Method Summary | |
---|---|
java.lang.Object |
evaluate(Node contextNode,
short type,
java.lang.Object result)
Evaluates this XPath expression and returns a result. |
Method Detail |
public 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
XPathResult
which may be reused and returned by this
method. If this is specified as null
or the
implementation cannot reuse the specified result, a new
XPathResult
will be constructed and returned.
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 XPathExpression that created this
XPathExpression
.
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