io.vertx.core.cli.converters

Class ConstructorBasedConverter<T>

java.lang.Object

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

All Implemented Interfaces:

Converter<T>

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

This 'default' converter tries to create objects using a constructor taking a single String argument. Be aware that implementation must also handle the case where the input is null.

Author:

Clement Escoffier

Method Summary

Modifier and Type	Method and Description
T	fromString(String input) Converts the given input to an object by using the constructor approach.
static <T> ConstructorBasedConverter<T>	getIfEligible(Class<T> clazz) Checks whether the given class can be used by the ConstructorBasedConverter (i.e.

Methods inherited from class java.lang.Object

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

Method Detail

getIfEligible

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

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

Parameters:

clazz - the class

Returns:

a ConstructorBasedConverter 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 constructor approach. Notice that the constructor must expect receiving 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.