org.ucl.xpath.ast
Class CastExpr

java.lang.Object
  org.ucl.xpath.ast.XPathNode
      org.ucl.xpath.ast.Expr
          org.ucl.xpath.ast.BinExpr
              org.ucl.xpath.ast.CastExpr

public class CastExpr

extends BinExpr

A class that creates a new value of a specific type based on an existing value. A cast expression takes two operands: an input expression and a target type. The type of the input expression is called the input type. The target type must be a named atomic type, represented by a QName, optionally followed by the occurrence indicator ? if an empty sequence is permitted. If the target type has no namespace prefix, it is considered to be in the default element/type namespace.

Constructor Summary

CastExpr(Expr l, SingleType r)
Constructor for CastExpr.

Method Summary

java.lang.Object

accept(XPathVisitor v) Support for Visitor interface.

Methods inherited from class org.ucl.xpath.ast.BinExpr

left, right, set_left, set_right

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CastExpr

public CastExpr(Expr l,
                SingleType r)

Constructor for CastExpr.

Parameters:

l - input xpath expression/variable.

r - SingleType to cast l to.

Method Detail

accept

public java.lang.Object accept(XPathVisitor v)

Support for Visitor interface.

Specified by:

accept in class XPathNode

Returns:

Result of Visitor operation.