io.vertx.core.cli.converters

Class FromStringBasedConverter<T>

java.lang.Object

io.vertx.core.cli.converters.FromStringBasedConverter<T>

All Implemented Interfaces:

Converter<T>

public final class FromStringBasedConverter<T>
extends Object
implements Converter<T>

This 'default' converter tries to create objects using a static 'from' method taking a single String argument. This converter is particularly convenient for converters themselves.

Author:

Clement Escoffier

Field Summary

Fields

Modifier and Type	Field and Description
static String	FROM_STRING

Method Summary

Modifier and Type	Method and Description
T	fromString(String input) Converts the given input to an object by using the 'fromString' method.
static <T> FromStringBasedConverter<T>	getIfEligible(Class<T> clazz) Checks whether the given class can be used by the FromStringBasedConverter (i.e.

Methods inherited from class java.lang.Object

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

Field Detail

FROM_STRING

public static final String FROM_STRING

See Also:

Constant Field Values

Method Detail

getIfEligible

public static <T> FromStringBasedConverter<T> getIfEligible(Class<T> clazz)

Checks whether the given class can be used by the FromStringBasedConverter (i.e. has a static 'fromString' method taking a single String as argument). If so, creates a new instance of converter for this type.

Parameters:

clazz - the class

Returns:

a FromStringBasedConverter if the given class is eligible, null otherwise.

fromString

public T fromString(String input)
             throws IllegalArgumentException

Converts the given input to an object by using the 'fromString' method. Notice that the method may receive a null value.

Specified by:

fromString in interface Converter<T>

Parameters:

input - the input, can be null

Returns:

the instance of T

Throws:

IllegalArgumentException - if the instance of T cannot be created from the input.