这是我的代码:
Schema schema = new Schema(1, "com.core.greendao.db");
/* Topic Model Table */
Entity topic = schema.addEntity("Topic");
topic.addLongProperty("topic_id").primaryKey();
topic.addStringProperty("group_id").notNull();
topic.addStringProperty("user_id");
topic.addStringProperty("slug");
topic.addStringProperty("message");
topic.addStringProperty("reply_count");
topic.addStringProperty("like_count");
topic.addStringProperty("anon_status");
topic.addStringProperty("link_data");
topic.addStringProperty("created_at");
topic.addStringProperty("locale");
topic.addIntProperty("status");
/* Reply Model Table */
//TODO: Topic id add for relation
Entity reply = schema.addEntity("Replies");
reply.addLongProperty("reply_id").primaryKey();
reply.addStringProperty("message");
reply.addStringProperty("reply_count");
reply.addStringProperty("like_count");
reply.addStringProperty("anon_status");
reply.addStringProperty("link_data");
reply.addStringProperty("created_at");
reply.addStringProperty("locale");
reply.addIntProperty("status");
/* User Model Table */
//TODO: Topic id to add for relation
Entity user = schema.addEntity("User");
user.addIdProperty();
user.addLongProperty("user_id");
user.addStringProperty("url");
user.addStringProperty("fullname");
user.addStringProperty("tagline");
user.addStringProperty("image");
user.addStringProperty("category_title");
/* Actions */
//TODO: Topic id and Reply id for relation
Entity actions = schema.addEntity("Actions");
actions.addIdProperty();
actions.addLongProperty("user_id");
actions.addStringProperty("url");
/*******************************************************************/
Property topicIdForTopicUser = user.addLongProperty("topic_id").notNull().getProperty();
user.addToOne(topic, topicIdForTopicUser);
Property topicIdForTopicAction = actions.addLongProperty("topic_id").notNull().getProperty();
actions.addToOne(topic, topicIdForTopicAction);
Property topicIdForReply = reply.addLongProperty("topic_id").notNull().getProperty();
reply.addToOne(topic, topicIdForReply);
/*******************************************************************/
根据结构,topic_id
是表中的主键,是、和表中的外键。Topic
User
Action
Replies
我从Topic
表中得到了正确的值。但是当我尝试基于topic_id
.
任何帮助表示赞赏。