How do I enable @Required Annotation in JavaConfig?

Hello,
I'm trying to port an existing application to JavaConfig. How do I enable the @Required annotation? In XML, I did so via the <context:annotation-config/> tag. My code is:

Code:

---

@ContextConfiguration(locations = "mypackage.ApplicationConfig", loader = JavaConfigContextLoader.class)
public class ReplicatedStoreTest extends AbstractTestNGSpringContextTests{

        @Test
        public void test() {
                Assert.assertNotNull(config);
        }
       
        @Autowired
        StartupParameters config;
}

---

It's injecting properly into the config object, but ignoring the @Required in StartupParameters

Thanks in Advance,
Steven
Harvard Children's Hospital Informatics Program

Code:

---

@Configuration(checkRequired=true)
public class ApplicationConfig {
        @Bean
        public StartupConfig getConfig() {
                StartupConfig startup = new StartupConfig();
                return startup;
        }

        @Bean
        public BDBWrapper getWrapper() throws DatabaseException {
                return new BDBWrapper(getConfig());
        }
       
}

---

Yes, checkRequired=true is part of the equation. For @Required checking to work, you must enable an aspect - take a look at SJC's atrequired sample for details:

https://fisheye.springframework.org/...les.atrequired

Thanks for the quick reply Chris,
My code is now checking the @Required annotation, but doesn't recognize it when I set it. I get "Method 'setCacheSize' is required for bean 'getConfig'" despite having clearly set the property. Did I use the annotations incorrectly? Could this have something to do with AbstractTestNGSpringContextTests?

Here's my test:

Code:

---

@ContextConfiguration(locations = "mydomain.ApplicationConfig", loader = JavaConfigContextLoader.class)
public class ReplicatedStoreTest extends AbstractTestNGSpringContextTests{

        @Test
        public void test() {
                logger.debug(config);
                Assert.assertNotNull(config);
        }
       
        @Autowired
        StartupConfig config;
}

---

Here's my config:

Code:

---

//@PropertiesValueSource(locations="file:${user.home}/.isg/test.properties")  //temporarily hidden until I can get this reading ${user.home}
@PropertiesValueSource(locations={"classpath:/myproject.properties",
        "file:/home/myname/.isg/test.properties"})
@Configuration(checkRequired=true)
public abstract class ApplicationConfig {
        @Bean
        public StartupConfig getConfig() {
                StartupConfig startup = new StartupConfig();
                startup.setCacheSize(getCache());
                return startup;
        }
        @ExternalValue(value="myproject.bdbhome")
        public abstract String getBDBDir();

        @ExternalValue(value="myproject.cache")
        public abstract int getCache();
}

---

Here's the bean with the @Required annotation.

Code:

---

public class StartupConfig {
        private long cacheSize;
        public long getCacheSize() {
                return cacheSize;
        }
        @Required
        public void setCacheSize(long cacheSize) {
                this.cacheSize = cacheSize;
        }
}

---

Thanks in Advance,
Steven

Read the following Javadoc: https://fisheye.springframework.org/...java?r=597#l17

JavaConfig cannot directly support @Required in the same way that Spring XML can, due to fundamental limitations. In order to emulate this support, you must bytecode weave an aspect against your objects that have @Required methods. That aspect is already written for you (RequiredMethodInvocationTracker), and is included in the SJC jar. You just need to either apply it using compile-time weaving or load-time weaving.

After reading, let me know what questions you have.