Extend inner class using code model

Question

How can I extend my generated class from an inner static class?

For instance, I have

class Foo {
    static class Bar {
    }
}

And I want my generated class to be extended from Bar

JCodeModel codeModel = new JCodeModel()
JClass aClass = codeModel.ref("somePckg.Foo$Bar")
JPackage jp = codeModel._package("pckag")
JDefinedClass jc = jp._class("GeneratedClass")
jc._extends(aClass)
codeModel.build(new File("generated/"))

What I get is

import somePckg.Foo$Bar;
public class GeneratedClass extends Foo$Bar {}

But what I want is

import somePckg.Foo;
public class GeneratedClass extends Foo.Bar {}

Solution:

You should pass the class name like this:

codeModel.ref("android.support.v7.widget.RecyclerView.ViewHolder")

And CodeModel will generate

package pckg;

import somePckg.Foo.Bar;

public class GeneratedClass extends Bar {
}

you will probably need to import the bar explicitly or import static Foo.* — Ray Tayek, Apr 04 '17 at 22:47

score 0 · Answer 1 · answered Apr 04 '17 at 22:15

0

What version of codemodel are you using - I believe the latest is 2.6 as per below. I just did a test with comparable code and got the result you were looking for

<dependency>
    <groupId>com.sun.codemodel</groupId>
    <artifactId>codemodel</artifactId>
    <version>2.6</version>
</dependency>

answered Apr 04 '17 at 22:15

cookie_monster

131
5

Yep, I'm using 2.6 with no success – forcelain Apr 05 '17 at 16:00
Can you try using a package other than 'package' as I believe this is a reserved word in Java so shouldn't be used as a package name - try MyApp (for the Foo class and the generated package) and see what that does. Actually I'm surprised you could create the Foo class in package, if you try it in Eclipse it prevents it – cookie_monster Apr 05 '17 at 20:06
Sorry, I used "package" just as an example. I use a correct package name in real code. I edited my question. – forcelain Apr 06 '17 at 02:12

John Ericksen · Accepted Answer · 2017-04-05T21:35:08.043

0

A couple problems here:

package is a reserved word, use a different package name (For this response I'll use example).
with JCodeModel you should reference the class using the canonical name "example.Foo.Bar"

Also, you could reference the class directly if you make it public:

JClass aClass = codeModel.ref(Bar.class);

edited Apr 05 '17 at 21:35

answered Apr 05 '17 at 21:05

John Ericksen

10,995
4
45
75

1. Sorry, I used "package" just as an example. I use a correct package name in real code. I edited my question. 2. Unfortunately, I can not use direct reference Bar.class because the class name comes as an input and does not exist in my class path. – forcelain Apr 06 '17 at 02:16

Extend inner class using code model

2 Answers2