Say I have the following classes:
@Slf4j
class MySuperclass {
public void testMethod() {
def test = [1, 2, 3]
test.each {it ->
log.info("gab" + it)
def test2 = [4,5,6]
test2.each {
log.info("" + it)
}
}
}
}
And then:
class MySubclass extends MySuperclass {
public void process() {
testMethod()
}
}
When I call mySubclass.process(), I get an error:
No such property log for class: com.ingenuity.app.kang.batch.MySubclass
The error is thrown only for the line inside the test2 closure. If I declare a public log field, it works fine. It also works fine if I add a @Slf4j annotation in the subclass.
I don't understand what happens here. Is this a groovy bug? I found this issue which might be related, but it is not the same behaviour: Groovy closure not work with static final field from super class
One way to deal with it is to reference the log property as a static member on the class. The project at https://github.com/jeffbrown/logissue demonstrates that.
package logdemo
import groovy.util.logging.Slf4j
@Slf4j
class MySuperclass {
void testMethod() {
def test = [1, 2, 3]
test.each {it ->
log.info("gab" + it)
def test2 = [4,5,6]
test2.each {
MySuperclass.log.info("" + it)
}
}
}
}
That works.
~ $ git clone [email protected]:jeffbrown/logissue.git
Cloning into 'logissue'...
remote: Enumerating objects: 22, done.
remote: Counting objects: 100% (22/22), done.
remote: Compressing objects: 100% (15/15), done.
remote: Total 22 (delta 0), reused 22 (delta 0), pack-reused 0
Receiving objects: 100% (22/22), 53.62 KiB | 1.28 MiB/s, done.
~ $ cd logissue/
$ ./gradlew run
> Task :run
16:41:19.022 [main] INFO logdemo.MySuperclass - gab1
16:41:19.027 [main] INFO logdemo.MySuperclass - 4
16:41:19.027 [main] INFO logdemo.MySuperclass - 5
16:41:19.027 [main] INFO logdemo.MySuperclass - 6
16:41:19.027 [main] INFO logdemo.MySuperclass - gab2
16:41:19.027 [main] INFO logdemo.MySuperclass - 4
16:41:19.027 [main] INFO logdemo.MySuperclass - 5
16:41:19.027 [main] INFO logdemo.MySuperclass - 6
16:41:19.027 [main] INFO logdemo.MySuperclass - gab3
16:41:19.027 [main] INFO logdemo.MySuperclass - 4
16:41:19.027 [main] INFO logdemo.MySuperclass - 5
16:41:19.027 [main] INFO logdemo.MySuperclass - 6
BUILD SUCCESSFUL in 2s
2 actionable tasks: 2 executed