public interface Predicate extends Serializable
[position() = last()]
.
This is production 8 and 9 in the
XPath 1.0 specification:
[8] Predicate ::= '[' PredicateExpr ']' [9] PredicateExpr ::= Expr
Modifier and Type | Method and Description |
---|---|
Object |
evaluate(Context context)
Evaluates this predicate's expression and returns the result.
|
Expr |
getExpr()
Returns the expression in this predicate.
|
String |
getText()
Returns the string form of the predicate,
including the square brackets.
|
void |
setExpr(Expr expr)
Change the expression used by this predicate.
|
void |
simplify()
Simplify the expression in this predicate.
|
Expr getExpr()
void setExpr(Expr expr)
expr
- the new expressionvoid simplify()
Expr.simplify()
String getText()
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 evaluatedJaxenException
Expr.evaluate(Context)
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