Spring Roo 在 ActiveRecord.aj 中为 EntityManager 生成错误

Question

我使用的是 Roo 1.3.2。我有一个抽象类和一个具体实现如下：

@RooJavaBean
@RooToString
@RooJpaActiveRecord(inheritanceType="TABLE_PER_CLASS")    
public abstract class Task {
        @Size(min = 2)
        private String name;
        public abstract void execute(Object... parameters);
}

@RooJavaBean
@RooToString
@RooJpaActiveRecord
public class ImportLoadPlanTask extends Task {
    @Size(min = 2)
    private String svnFile;

    @Override
    public void execute(Object... parameters){
        ....
    }
}

但是生成的 ActiveRecord.aj 文件会生成以下代码

public static final EntityManager Task.entityManager() {
        EntityManager em = new Task() {
            public void execute(java.lang.Object parameters) {
                throw new UnsupportedOperationException();
            }
        }.entityManager;
        if (em == null) throw new IllegalStateException("Entity manager has not been injected (is the Spring Aspects JAR configured as an AJC/AJDT aspects library?)");
        return em;
    }

IDE 的错误信息是：

The type new Task(){} must implement the inherited abstract Task.execute(Object ...)

如果我从 Task 类中删除 abstract 关键字，错误就会消失，因为 Roo 不会尝试生成上面列出的代码。

我怎样才能让它工作？这是 Roo 错误吗？

Answer 1

这是一个检测parameters参数类型的错误。请问，你能在Spring Roo Jira举报吗？

要解决它，只需使用 push-in：

public abstract class Task {
    @Size(min = 2)
    private String name;
    public abstract void execute(Object... parameters);

    // Push-in entityManager method from .aj file
    public static final EntityManager entityManager() {
        EntityManager em = new Task() {
            public void execute(Object... parameters) {
                throw new UnsupportedOperationException();
            }
        }.entityManager;
       if (em == null) throw new IllegalStateException("Entity manager has not been injected (is the Spring Aspects JAR configured as an AJC/AJDT aspects library?)");
       return em;
    }
}

这就是 Spring Roo 的要点之一：您始终可以按照自己的方式行事！

祝你好运！