org.planx.xpath.expr
Class Expression

java.lang.Object
  org.planx.xpath.expr.Expression

Direct Known Subclasses:

FilterExpression, FunctionCall, LocationPath, Operator, PathExpression, VariableReference, XObject

public abstract class Expression
extends Object

An XPath expression.

Constructor Summary

Expression()

Method Summary

abstract XObject

evaluate(Context ctxt, Environment env, Navigator nav) Evaluate the expression for the given context using the specified environment.

Methods inherited from class java.lang.Object

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

Constructor Detail

Expression

public Expression()

Method Detail

evaluate

public abstract XObject evaluate(Context ctxt,
                                 Environment env,
                                 Navigator nav)
                          throws XPathException

Evaluate the expression for the given context using the specified environment.

Throws:

XPathException