org.netbeans.validation.api.conversion
Class Converter<From,To>

java.lang.Object
  org.netbeans.validation.api.conversion.Converter<From,To>

public abstract class Converter<From,To>
extends java.lang.Object

Converts a validator of one type to a validator that works against a different type. In this way, it is possible to write only validators for Strings, but use them against javax.swing.text.Documents, etc.

Author:

Tim Boudreau

Constructor and Description

Converter()

Method Summary

Modifier and Type	Method and Description
Validator<To>	convert(Validator<From>... froms)
abstract Validator<To>	convert(Validator<From> from) Create a validator for type To by wrapping a validator for type From.
static <From,To> Converter<From,To>	find(java.lang.Class<From> from, java.lang.Class<To> to) Find a converter to create validators for one type from validators for another type.
static <From,To> void	register(java.lang.Class<From> from, java.lang.Class<To> to, Converter<From,To> converter) Register a converter

Methods inherited from class java.lang.Object

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

Constructor Detail

Converter

public Converter()

Method Detail

convert

public abstract Validator<To> convert(Validator<From> from)

Create a validator for type To by wrapping a validator for type From. For example, a converter that is a factory for Validators of javax.swing.text.Documents may be created from a validator that only handles Strings. Convert would simply return a Validator that first calls Document.getText(), and passes the result to the Validator.

Parameters:

from - The original validator.

Returns:

A validator of the type requested

convert

public final Validator<To> convert(Validator<From>... froms)

register

public static <From,To> void register(java.lang.Class<From> from,
                                      java.lang.Class<To> to,
                                      Converter<From,To> converter)

Register a converter

Type Parameters:

From -

To -

Parameters:

from -

to -

converter -

find

public static <From,To> Converter<From,To> find(java.lang.Class<From> from,
                                                java.lang.Class<To> to)

Find a converter to create validators for one type from validators for another type.

Type Parameters:

From - The type of object we get from a component, such as a javax.swing.text.Document

To - The type of object we want to process, such as a java.lang.String

Parameters:

from - A class, such as Document.class

to - A class such as String.class

Returns:

An object which can take validators for type From and produce validators for type To