Greendao 无法生成 join dao 导入(ToMany 关系)

Greendao can't generate join dao import (ToMany relation)

Greendao 没有生成 ToMany joiner dao 的导入。我怎样才能做到这一点? 我正在创建 Book 和 BookStore,尝试通过 Custom joiner 保存书店中的书籍列表。构建后尝试生成的 JoinBookStoreWithBookDao 未在 BookStoreDao 中导入但存在。

Sources

Book.java

package com.example.valery.Whosebugsample.dao;

import org.greenrobot.greendao.annotation.Entity;
import org.greenrobot.greendao.annotation.Id;
import org.greenrobot.greendao.annotation.Generated;

@Entity
public class Book {

   @Id
   private long id;

   public Book() {
   }
}

BookStore.java

package com.example.valery.Whosebugsample.dao;

import com.example.valery.Whosebugsample.dao.joiner.DaoSession;
import com.example.valery.Whosebugsample.dao.joiner.JoinBookStoreWithBook;

import org.greenrobot.greendao.DaoException;
import org.greenrobot.greendao.annotation.Entity;
import org.greenrobot.greendao.annotation.Generated;
import org.greenrobot.greendao.annotation.Id;
import org.greenrobot.greendao.annotation.JoinEntity;
import org.greenrobot.greendao.annotation.ToMany;

import java.util.ArrayList;
import java.util.List;


@Entity
public class BookStore {
    @Id
    private long id;

    @ToMany
    @JoinEntity(
            entity = JoinBookStoreWithBook.class,
            sourceProperty = "bookStoreId",
            targetProperty = "bookId"
    )
    private List<Book> mBooks;
}

JoinBookStoreWithBook.java

package com.example.valery.Whosebugsample.dao.joiner;

import org.greenrobot.greendao.annotation.Entity;
import org.greenrobot.greendao.annotation.Id;
import org.greenrobot.greendao.annotation.Generated;

@Entity
public class JoinBookStoreWithBook {

    @Id
    private long id;

    private long bookId;
    private long bookStoreId;
}

我找到原因了。 Joiner 应该在 "parent" 的包内,他不能在另一个包内。