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public interface Expr
Represents an XPath expression. This is production 14 in the XPath 1.0 specification:
[14] Expr ::= OrExpr
Method Summary | |
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Object |
evaluate(Context context)
Evaluate the expression in the given context, and return the result. |
String |
getText()
Returns a String containing the XPath expression. |
Expr |
simplify()
Simplifies the XPath expression. |
Method Detail |
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String getText()
Expr simplify()
//para[1 = 1]
could be simplified to
//para
. In practice, this is usually a noop.
Jaxen does not currently perform any simplification.
Object evaluate(Context context) throws JaxenException
java.lang.Double
for expressions that
return a number, a java.lang.String
for expressions that
return a string, a java.lang.Boolean
for expressions that
return a boolean, and a java.util.List
for expressions that
return a node-set. In the latter case, the elements of the list are
the actual objects from the source document model. Copies are not made.
context
- the context in which the expression is evaluated
JaxenException
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