[forge-dev] [Roaster] Type<?> instanceof

[George Gastaldi]

Hi Daniel,

You could try to load the class using: Class.forName and then attempt to check if the class isAssignableFrom(Number.class)

This will not work if the class does not belong to the current classloader, but I am not sure if you're going to run into this issue specifically.

> Em 03/07/2014, às 21:46, Daniel Cunha <danielsoro at gmail.com> escreveu:
> 
> Hi folks,
> 
> I want do that:
> 
> type instanceof Number.
> That case, my type can be AtomicInteger, AtomicLong, BigDecimal, BigInteger, Byte, Double, Float, Integer, Long and Short
> 
> Eg:.
> 
>  public static Type<?> getIdType(JavaClass<?> entity)
>    {
>       for (Member<?> member : entity.getMembers())
>       {
>          if (member.hasAnnotation(Id.class))
>          {
>             if (member instanceof Method)
>             {
>                return ((Method<?, ?>) member).getReturnType();
>             }
>             if (member instanceof Field)
>             {
>                return ((Field<?>) member).getType();
>             }
>          }
>       }
>       return null;
>    }
>     public static boolean isNumberIdType(JavaClass<?> entity)
>    {
>       return getIdType(entity) instanceof Number;
>    }
> I see the code and I don’t see a simple form to do it.
> How I do that with Roaster Type<?>?
> 
> I thought to do that in Types (roaster util):
> 
>    public static boolean isNumber(final String type)
>    {
>       if (isBasicType(type))
>       {
>          if (isPrimitive(type))
>          {
>             return Arrays.asList("int", "long", "float", "double", "short").contains(type);
>          }
>          return Arrays.asList("Boolean", "Byte", "Double", "Float", "Integer", "Long", "Short").contains(
>                   type);
>       }
>       return false;
>    }
> But, it isn’t good.
> 
> ​
> -- 
> Daniel Cunha (soro) <http://www.cejug.net>
> Blog: http://www.danielsoro.com.br
> Twitter: https://twitter.com/dvlc_
> GitHub: https://github.com/danielsoro
> LinkedIn:  http://www.linkedin.com/in/danielvlcunha 
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