fr.umlv.tatoo.runtime.util
Class DefaultStringConverter

java.lang.Object
  fr.umlv.tatoo.runtime.util.DefaultStringConverter

All Implemented Interfaces:

StringConverter

public class DefaultStringConverter
extends Object
implements StringConverter

Default converter implementation. This converter convert a string to a value by using of one of its 'parse' method.

1. The 'parse' method are recognized by the converter if a method obey to the following rules :
   • the method is tagged by the annotation ParseMethod
   • the method have one or two parameter, the first one is a string, the second one (optional) is the class.
   • the method must have a return type (other than void).
2. The converter choose the 'parse' method that have the most specific type comparing with the type argument of the method convert(String,T.class).

Author:

Remi

Nested Class Summary

static interface

DefaultStringConverter.ParseMethod Marker annotation on method, indicates a 'parse' method.

Constructor Summary

DefaultStringConverter()
Create a converter.

Method Summary

<T> T	convert(String value, Class<T> clazz) Convert a string to a value of type T.
protected boolean	parseBoolean(String text) Converts a text to a boolean
protected char	parseChar(String text) Converts a text to a single char.
protected double	parseDouble(String text) Converts a text to a double.
protected <E extends Enum<E>> E	parseEnum(String text, Class<E> clazz) Convert a text containing the name of an enumeration item to its value.
protected int	parseInt(String text) Converts a text to an integer.
protected String	parseString(String text) Converts a text to a string.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultStringConverter

public DefaultStringConverter()

Create a converter.

Method Detail

parseChar

protected char parseChar(String text)

Converts a text to a single char.

Parameters:

text - the text to parse.

Returns:

a single char.

Throws:

NumberFormatException

parseString

protected String parseString(String text)

Converts a text to a string.

Parameters:

text - the text to parse.

Returns:

the texte take as argument.

parseInt

protected int parseInt(String text)

Converts a text to an integer.

Parameters:

text - text to parse.

Returns:

an integer corresponding to the text.

Throws:

NumberFormatException - if the text is not an integer.

parseDouble

protected double parseDouble(String text)

Converts a text to a double.

Parameters:

text - text to parse.

Returns:

a double corresponding to the text.

Throws:

NumberFormatException - if the text is not a double.

parseBoolean

protected boolean parseBoolean(String text)

Converts a text to a boolean

Parameters:

text - text to parse.

Returns:

a boolean corresponding to the text.

Throws:

NumberFormatException - if the text is not a boolean.

parseEnum

protected <E extends Enum<E>> E parseEnum(String text,
                                          Class<E> clazz)

Convert a text containing the name of an enumeration item to its value.

Type Parameters:

E - type of the enumeration.

Parameters:

text - texte to parse.

clazz - the class of the enumeration.

Returns:

the corresponding enumeration object.

Throws:

IllegalArgumentException - if the text isn't a name of one of the item of the enumeration.

convert

public <T> T convert(String value,
                     Class<T> clazz)

Description copied from interface: StringConverter

Convert a string to a value of type T.

Specified by:

convert in interface StringConverter

Type Parameters:

T - the type of the value.

Parameters:

value - text representation of the value.

clazz - type of the value.

Returns:

the converted value.