15.2.3.3.3. Generate a Custom Key

import javax.cache.annotation.GeneratedCacheKey;
import javax.cache.annotation.CacheKeyGenerator;
import javax.cache.annotation.CacheKeyInvocationContext;
import java.lang.annotation.Annotation;

public class MyCacheKeyGenerator implements CacheKeyGenerator {

   @Override
   public GeneratedCacheKey generateCacheKey(CacheKeyInvocationContext<? extends Annotation> ctx) {

      return new MyCacheKey(
            ctx.getAllParameters()[0].getValue()
      );
   }
}

@CacheResult(cacheKeyGenerator = MyCacheKeyGenerator.class)
public void doSomething(String p1, String p2) {
...
}