net.sf.jga.fn.string
Class ParseFormat<R>

java.lang.Object
  net.sf.jga.fn.Functor<R>
      net.sf.jga.fn.UnaryFunctor<java.lang.String,R>
          net.sf.jga.fn.string.ParseFormat<R>

All Implemented Interfaces:

java.io.Serializable, Visitable

Direct Known Subclasses:

ParseFormat.Date, ParseFormat.Number

public class ParseFormat<R>
extends UnaryFunctor<java.lang.String,R>

Unary Functor that parses a given Format.

Copyright © 2003-2005 David A. Hall

Author:

David A. Hall

See Also:

Serialized Form

Nested Class Summary

static class	ParseFormat.Date<T extends java.util.Date> ParseFormat functor for use with Dates.
static class	ParseFormat.Number<T extends java.lang.Number> ParseFormat functor for use with Numbers.
static interface	ParseFormat.Visitor Interface for classes that may interpret a ParseFormat predicate.

Constructor Summary

protected

ParseFormat(java.text.Format format, UnaryFunctor<java.lang.Object,R> conv) Builds the ParseFormat given a text Format and a functor that can convert Objects returned by the Format's parse(Object) method and the desired type of this functor.

Method Summary

void	accept(Visitor v) Calls the Visitor's visit(ParseFormat) method, if it implements the nested Visitor interface.
R	fn(java.lang.String arg) Parses the value from the given string, using the java.text.Format object passed at construction.
java.text.Format	getFormat()
java.lang.String	toString()

Methods inherited from class net.sf.jga.fn.UnaryFunctor

bind, bind0th, bindNth, compose, compose, compose, composeNth, composeNth, eval, generate, generateNth

Methods inherited from class java.lang.Object

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

Constructor Detail

ParseFormat

protected ParseFormat(java.text.Format format,
                      UnaryFunctor<java.lang.Object,R> conv)

Builds the ParseFormat given a text Format and a functor that can convert Objects returned by the Format's parse(Object) method and the desired type of this functor.

Method Detail

getFormat

public java.text.Format getFormat()

Returns:

the format used to parse values

fn

public R fn(java.lang.String arg)

Parses the value from the given string, using the java.text.Format object passed at construction.

Specified by:

fn in class UnaryFunctor<java.lang.String,R>

Parameters:

arg - formatted string to be parsed

Returns:

the value that the string represented

Throws:

java.text.ParseException - when the string cannot be parsed to the correct type

accept

public void accept(Visitor v)

Calls the Visitor's visit(ParseFormat) method, if it implements the nested Visitor interface.

Specified by:

accept in interface Visitable

Overrides:

accept in class Functor<R>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object