org.jaxen.expr
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
Method Summary | |
---|---|
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.
|
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.
Parameters: context the context in which the expression is evaluated
Returns: an object representing the result of the evaluation
Throws: JaxenException
See Also: evaluate
Returns: the expression between the brackets
Returns: the bracketed form of this predicate
Parameters: the new expression
See Also: simplify