Preserving Parameter Names are off by default in later java versions

[pshotton]

Expected Behavior

Following the documentation on configuring a second datasource, then trying to use within a service.
In application.yml have a datasource block, followed by a datasources block with one datasource defined.
Trying to use the second datasource in a service, again following the docs.:
DataSource dataSource_lookup

Actual Behaviour

Datasource doesn't get injected, always comes back as null.

Steps To Reproduce

Create a grails app with bare config with two datasources as per documentation. Attempt to use second datasource.

Environment Information

Linux
JDK 17

Example Application

No response

Version

5.3.2

[puneetbehl]

It will easier and faster for anyone to help you if you could you please try to use Java 11, and also share a sample application?

[pshotton]

Any problem with Java 17? Even with J11 I get the same problem. I will share a sample...

[jdaugherty]

This is likely caused by the parameters option not being enabled on your application. Using @Qualifier can fix the injection. We should change forge to include this by default. Grails core does this for its own project:

    project.tasks.withType(JavaCompile).configureEach {
        // Preserve method parameter names in Groovy/Java classes for IDE parameter hints & bean reflection metadata.
        it.options.compilerArgs.add('-parameters')
        // encoding needs to be the same since it's different across platforms
        it.options.encoding = StandardCharsets.UTF_8.name()
        it.options.fork = true
        it.options.forkOptions.jvmArgs = ['-Xms128M', '-Xmx2G']
    }

    project.plugins.withId('groovy') {
        project.tasks.withType(GroovyCompile).configureEach {
            // encoding needs to be the same since it's different across platforms
            it.groovyOptions.encoding = StandardCharsets.UTF_8.name()
            // Preserve method parameter names in Groovy/Java classes for IDE parameter hints & bean reflection metadata.
            it.groovyOptions.parameters = true
            // encoding needs to be the same since it's different across platforms
            it.options.encoding = StandardCharsets.UTF_8.name()
            it.options.fork = true
            it.options.forkOptions.jvmArgs = ['-Xms128M', '-Xmx2G']
        }
    }

[rahulshishodia]

@jdaugherty Based on your comment I have raised #15382. Please take a look.