Stéphan,
You say you are using com.sun.tools.javac.api.JavacTrees. Although that
class is not exported from jdk.compiler, it is an implementation of the
interface com.sun.source.util.Trees, which is exported. Is the
interface sufficient to your needs? If not, what methods are you calling?
-- Jon
On 11/27/16 1:16 AM, Stéphane Nicoll wrote:
Hey,
Thanks for all the feedback so far. Any idea about the annotation processor
question? Is there a dedicated dev list for it maybe?
Thank you,
S.
On Thu, Nov 24, 2016 at 3:22 PM, Stéphane Nicoll <snic...@pivotal.io> wrote:
Hi,
I am working on the Spring Boot project[1] and I am trying to make sure
our codebase compiles with the current JDK9 build[2]. So far I've hit two
major issues:
We use "sun.misc.VMSupport" to retrieve the port being used by the Java
remote debugging. You can find the actual code in RemoteDebugPortProvider[3]
We have an annotation processor that inspects all classes annotated with
@ConfigurationProperties and generates some meta-data about them. One
important piece of this is to extract the default value assigned to fields.
Consider the following example
@ConfigurationProperties
public class Foo {
private static final String DEFAULT_NAME = "name";
private String name = DEFAULT_NAME;
private Integer counter = 42;
private List<String> hosts = Collections.singletonList("localhost");
}
What we've build is a visitor that navigates to those elements and
extracts the default values assigned to each field, including navigating to
parent element (the "name" constant there) or inferring value from method
parameters ("localhost"). The current code relies on a feature of the JDK
that is no longer exported[4]:
java.lang.IllegalAccessException: class org.springframework.boot.
configurationprocessor.fieldvalues.javac.Trees cannot access class
com.sun.tools.javac.api.JavacTrees (in module jdk.compiler) because
module jdk.compiler does not export com.sun.tools.javac.api to unnamed
module @5a7fe64
<https://github.com/spring-projects/spring-boot/commit/5a7fe64f>
Does anybody has some insight as how we could migrate those two use cases?
In particular, the second use case could be implemented with a contract of
javax.lang.model but we haven't found how to do it.
Thank you,
S.
[1] https://github.com/spring-projects/spring-boot
[2] https://github.com/spring-projects/spring-boot/issues/7226
[3] https://github.com/spring-projects/spring-boot/blob/
master/spring-boot-devtools/src/main/java/org/
springframework/boot/devtools/tunnel/server/RemoteDebugPortProvider.java
[4] https://github.com/spring-projects/spring-boot/blob/
master/spring-boot-tools/spring-boot-configuration-
processor/src/main/java/org/springframework/boot/configurationprocessor/
fieldvalues/javac/Trees.java
