org.exolab.adaptx.xpath.engine

Class Parser

java.lang.Object

org.exolab.adaptx.xpath.engine.Parser

public class Parser
extends java.lang.Object

A class for parsing expression strings

Version:

$Revision: 4090 $ $Date: 2004-01-23 20:21:23 -0500 (Fri, 23 Jan 2004) $

Author:

Keith Visco

Constructor Summary

Constructors

Constructor and Description
Parser()

Method Summary

Methods

Modifier and Type	Method and Description
static XPathExpression	createExpr(java.lang.String exprString) Creates an Expr from the given String
static FunctionCall	createFunctionCall(java.lang.String name) Creates the appropriate FunctionCall based on the given name
static XPathExpression	createLiteralExpr(java.lang.String literal) Creates a literal expression, which simply evaluates to the given string literal.
static MatchExpression	createMatchExpr(java.lang.String matchString) Parses the a pattern String into a MatchExpr
static PathExpr	createPathExpr(java.lang.String pattern) Creates a PathExpr from the string argument.
static SelectExpr	createSelectExpr(java.lang.String selectString) Parses the a pattern String into a SelectExpr
static UnionExpr	createUnionExpr(java.lang.String pattern) Creates a UnionExpr from the given string argument.
static void	main(java.lang.String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

Parser

public Parser()

Method Detail

createExpr

public static XPathExpression createExpr(java.lang.String exprString)
                                  throws XPathException

Creates an Expr from the given String

Parameters:

exprString - the String to create the Expr from

Returns:

the new Expr

Throws:

InvalidExprException - when a parsing error occurs

XPathException

createLiteralExpr

public static XPathExpression createLiteralExpr(java.lang.String literal)

Creates a literal expression, which simply evaluates to the given string literal.

Parameters:

literal - the string literal the literal expression should evaluate to.

Returns:

an XPathExpression which will evaluate to the given string literal.

createFunctionCall

public static FunctionCall createFunctionCall(java.lang.String name)
                                       throws XPathException

Creates the appropriate FunctionCall based on the given name

Parameters:

name - the name of the function to call

params - the List of Expr paramaters for the function call

Returns:

the new FunctionCall

Throws:

XPathException

createMatchExpr

public static MatchExpression createMatchExpr(java.lang.String matchString)
                                       throws XPathException

Parses the a pattern String into a MatchExpr

Parameters:

matchString - the pattern string to create the MatchExpr from

Returns:

the new MatchExpr

Throws:

InvalidExprException

XPathException

createPathExpr

public static PathExpr createPathExpr(java.lang.String pattern)
                               throws XPathException

Creates a PathExpr from the string argument.

Parameters:

pattern - the string to create the PathExpr from

Returns:

the new PathExpr

Throws:

InvalidExprException

XPathException

createSelectExpr

public static SelectExpr createSelectExpr(java.lang.String selectString)
                                   throws XPathException

Parses the a pattern String into a SelectExpr

Parameters:

selectString - the pattern string to create the SelectExpr from

Returns:

the new SelectExpr

Throws:

XSLException

XPathException

createUnionExpr

public static UnionExpr createUnionExpr(java.lang.String pattern)
                                 throws XPathException

Creates a UnionExpr from the given string argument.

Parameters:

pattern - the string to create the UnionExpr from

Returns:

the new UnionExpr

Throws:

InvalidExprException

XPathException

main

public static void main(java.lang.String[] args)
                 throws XPathException

Throws:

XPathException