Groups > comp.lang.java.programmer > #7902

Re: Annotations processing + type introspection + code generation

From	markspace <-@.>
Newsgroups	comp.lang.java.programmer
Subject	Re: Annotations processing + type introspection + code generation
Date	2011-09-12 10:04 -0700
Organization	A noiseless patient Spider
Message-ID	<j4le3e$f7m$1@dont-email.me> (permalink)
References	<b4cda2f5-442e-42f3-af75-5040215ba997@k15g2000yqd.googlegroups.com> <9d6rupF6dkU1@mid.individual.net>

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On 9/12/2011 9:56 AM, Robert Klemme wrote:

> The only reason I can think of which would require to generate code
> would be ultra high speed requirements.

I think generated code is somewhat more common that you assume.  Since 
the JVM byte codes and class format is public and relatively stable, 
it's quite easy to generate code in a manner that's compatible with 
many, or all, JVMs.

There's also things you can't do at runtime.  For example, the Proxy 
class requires an interface to extend.  But many POJO objects don't 
declare a separate interface.  And requiring the programmer to declare 
an interface for all POJO types within a framework is pretty odious, and 
old school.

I'm playing around with JSF and JPA right now.  I notice that all my 
Entity classes are decorated by extending them with generated code.  I'm 
sure if there were a better way to do it, they would.  But the generated 
code seems to be the way to go in this instance.

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Thread

Annotations processing + type introspection + code generation Alex J <vstrength@gmail.com> - 2011-09-12 06:21 -0700
  Re: Annotations processing + type introspection + code generation Robert Klemme <shortcutter@googlemail.com> - 2011-09-12 18:56 +0200
    Re: Annotations processing + type introspection + code generation markspace <-@.> - 2011-09-12 10:04 -0700
      Re: Annotations processing + type introspection + code generation Robert Klemme <shortcutter@googlemail.com> - 2011-09-12 19:22 +0200
        Re: Annotations processing + type introspection + code generation Alex J <vstrength@gmail.com> - 2011-09-12 11:08 -0700
    Re: Annotations processing + type introspection + code generation Alex J <vstrength@gmail.com> - 2011-09-12 11:00 -0700
      Re: Annotations processing + type introspection + code generation Robert Klemme <shortcutter@googlemail.com> - 2011-09-12 20:21 +0200
        Re: Annotations processing + type introspection + code generation Alex J <vstrength@gmail.com> - 2011-09-12 15:06 -0700

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