type-safe configs the second minute

in my first post about this topic i explained how to create a type-safe config based on interfaces and the partial-bean-module provided by deltaspike.

this second part is about a new possibility which is available since deltaspike v1.5.1.


until deltaspike v1.5.1, you needed to create and inject the type-safe config for accessing configured values. one part of the example shown in the first post looked like:

	@TypeSafeConfig
	public interface AppConfig {
	String name();
	ApplicationVersion version();
	}

view raw AppConfig.java hosted with ❤ by GitHub

	@Scheduled(cronExpression = "0 0/10 * * * ?")
	public class CustomBatchStarter implements org.quartz.Job {
	@Inject
	private LogService logService;
	@Inject
	private AppConfig appConfig;
	@Inject
	private BatchConfig batchConfig;
	@Inject
	private CustomBatchService batchService;
	@Override
	public void execute(JobExecutionContext context) throws JobExecutionException {
	logService.log(appConfig.name(), appConfig.version(),
	getClass().getName() + " started");
	batchService.start(batchConfig.batchSize());
	}
	}

view raw CustomBatchStarter.java hosted with ❤ by GitHub

since deltaspike v1.5.1, you can use @Produces in your type-safe config. with that you can directly inject the result instead of the config-class.

	@TypeSafeConfig
	public interface AppConfig2 {
	String name();
	@Produces //since ds v1.5.1
	ApplicationVersion version();
	}

view raw AppConfig2.java hosted with ❤ by GitHub

	//example for injecting and using type-safe configs
	@Scheduled(cronExpression = "0 0/10 * * * ?")
	public class CustomBatchStarter2 implements org.quartz.Job {
	@Inject
	private LogService logService;
	@Inject
	private ApplicationVersion version;
	@Inject
	private BatchConfig batchConfig;
	@Inject
	private CustomBatchService batchService;
	@Override
	public void execute(JobExecutionContext context) throws JobExecutionException {
	logService.log(appConfig.name(), version, getClass().getName() + " started");
	batchService.start(batchConfig.batchSize());
	}
	}

view raw CustomBatchStarter2.java hosted with ❤ by GitHub