GreenDAO支持表之间的多种关系

Question

我一直在尝试使用GreenDAO创建数据库模型.当我尝试在不同的表之间创建多个关系时,问题就出现了.

基本上,我有一张Message桌子,一张Conversation桌子和一张User桌子.

用户有一个消息列表,并且消息具有父对话.

我尝试编写此代码来创建数据库:

    private static void addUser(Schema schema) {
            user = schema.addEntity("User");
            userId = user.addIdProperty().getProperty();
            user.addStringProperty("facebookId").unique().index();

            user.addStringProperty("firstName");
            user.addStringProperty("lastName");
            user.addStringProperty("fullName");
            user.addStringProperty("photoUrl");
    }

    private static void addMessage(Schema schema) {
            message = schema.addEntity("Message");
            messageId = message.addIdProperty().getProperty();
            message.addStringProperty("messageId").primaryKey();

            message.addDateProperty("date");
            message.addStringProperty("content");
            message.addStringProperty("typeString");
    }

    private static void addConversation(Schema schema) {
          conversation = schema.addEntity("Conversation");
          conversation.addIdProperty();

          conversation.addStringProperty("conversationId");
          // REST OF THE CODE
    }

    private static void fakeRelationship(Schema schema) {
            Property author = message.addLongProperty("author").getProperty();
            Property parent = message.addLongProperty("parent").getProperty();

            message.addToOne(user, author);
            message.addToOne(conversation, parent);

            user.addToMany(message, author);
            conversation.addToMany(message, parent);
    }

运行此代码后,我收到此错误:

Exception in thread "main" java.lang.RuntimeException: Currently only single FK columns are supported: ToOne 'parent' from Message to Conversation
at de.greenrobot.daogenerator.ToOne.init3ndPass(ToOne.java:91)
at de.greenrobot.daogenerator.Entity.init3rdPassRelations(Entity.java:557)
at de.greenrobot.daogenerator.Entity.init3ndPass(Entity.java:550)
at de.greenrobot.daogenerator.Schema.init3ndPass(Schema.java:185)
at de.greenrobot.daogenerator.DaoGenerator.generateAll(DaoGenerator.java:94)
at de.greenrobot.daogenerator.DaoGenerator.generateAll(DaoGenerator.java:79)
at com.glidetalk.dao.generator.GlideDaoGenerator.main(GlideDaoGenerator.java:27)

这实际上是因为我不能为我的数据库中的每个表创建多个关系吗？!

我必须手动编写所有内容吗？

Answer 1

greenDAO 支持您尝试做的事情，并且您的代码看起来也不错。我将其复制到我的工作区中并且执行得非常好。所以我猜你遗漏的代码有问题。