org.redkale.util

注释类型 ResourceListener

@Documented
 @Target(value=METHOD)
 @Retention(value=RUNTIME)
public @interface ResourceListener

@Resource资源被更新时的监听事件。本注解只能标记在方法参数为(String name, T newVal, T oldVal)上。 方法在资源被更新以后调用。

 public class RecordService implements Service {

    @Resource(name = "record.id")
    private int id;

    @Resource(name = "record.name")
    private String name;

    @ResourceListener
    private void changeResource(String name, Object newVal, Object oldVal) {
        System.out.println("@Resource = " + name + " 资源变更:  newVal = " + newVal + ", oldVal = " + oldVal);
    }

    public static void main(String[] args) throws Exception {
        ResourceFactory factory = ResourceFactory.root();
        factory.register("record.id", "2345"); 
        factory.register("record.name", "my old name"); 
        Record record = new Record();
        factory.inject(record);
        factory.register("record.name", "my new name"); 
   }
 
 }
 

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