org.jaxen.expr

Interface XPathExpr

public interface XPathExpr extends Serializable

A wrapper around an XPath expression.

Method Summary
List	asList(Context context) Evaluates the expression and returns a list cintaing the resulting nodes, or a singleton list containing a `Double`, `String`, or `Boolean`.
Expr	getRootExpr() Returns the wrapped expression object.
String	getText() Returns a String containing the XPath expression.
void	setRootExpr(Expr rootExpr) Changes the wrapped expression object.
void	simplify() Simplifies the XPath expression.

Method Detail

asList

public List asList(Context context)

Evaluates the expression and returns a list cintaing the resulting nodes, or a singleton list containing a Double, String, or Boolean.

Parameters: context the context in which to evaluate this expression

Returns: a list

Throws: JaxenException

getRootExpr

public Expr getRootExpr()

Returns the wrapped expression object.

Returns: the wrapped Expr object

getText

public String getText()

Returns a String containing the XPath expression.

Returns: the text form of this XPath expression

setRootExpr

public void setRootExpr(Expr rootExpr)

Changes the wrapped expression object.

Parameters: rootExpr the new expression object to wrap

simplify

public void simplify()

Simplifies the XPath expression. For example, the expression //para[1 = 1] could be simplified to //para. In practice, this is usually a noop. Jaxen does not currently perform any simplification.