下面是我的模式生成代码，两个变量（storeIdForSurvey和questionIdForAnswer）没有在模型类（Survey和Question）中自动生成，尽管它们存在于自动生成的dao类（SurveyDao和QuestionDao）中。
域的面向对象描述为：用户有商店，商店有调查，调查有FollowupItems，调查有类别，类别有问题，问题有历史，问题有答案。
private static void addUser(Schema schema) {
//User
Entity user = schema.addEntity("User");
user.addIdProperty();
user.addStringProperty("districtId");
user.addStringProperty("employeeId");
user.addStringProperty("name");
user.addStringProperty("sessionToken");
user.addStringProperty("userId");
//Store
Entity store = schema.addEntity("Store");
// foreign key
Property userIdForStore = store.addLongProperty("userIdForStore").getProperty();
store.addToOne(user, userIdForStore);
user.addToMany(store, userIdForStore);
store.addIdProperty();
store.addStringProperty("storeId");
store.addStringProperty("address");
store.addStringProperty("city");
store.addStringProperty("storeName");
store.addStringProperty("state");
store.addStringProperty("zip");
store.addStringProperty("storeManagerName");
store.addBooleanProperty("isSurveyHistoryAvailable");
//Survey
Entity survey = schema.addEntity("Survey");
//foreign key
Property storeIdForSurvey = survey.addLongProperty("storeIdForSurvey").getProperty();
survey.addToOne(store, storeIdForSurvey); // one store can have one survey at a time
store.addToOne(survey, storeIdForSurvey);
survey.addIdProperty();
survey.addStringProperty("surveyId");
survey.addStringProperty("dmSignImagePath");
survey.addStringProperty("dmSignImageName");
survey.addStringProperty("smSignImagePath");
survey.addStringProperty("smSignImageName");
survey.addStringProperty("startlatitude");
survey.addStringProperty("startlongitude");
survey.addStringProperty("submitLatitude");
survey.addStringProperty("submitLongitude");
survey.addStringProperty("acknowledgedBy");
survey.addStringProperty("deliveredBy");
survey.addStringProperty("name");
survey.addStringProperty("createdBy");
survey.addStringProperty("description");
survey.addStringProperty("storeId");
survey.addStringProperty("districtManager");
survey.addDateProperty("startDate");
survey.addDateProperty("submitDate");
survey.addDateProperty("syncDate");
survey.addDateProperty("createdDate");
survey.addDateProperty("actionItemAssignDate");
survey.addDateProperty("actionItemDueDate");
survey.addDoubleProperty("score");
//FolloupItems
Entity followupItem = schema.addEntity("FollowupItem");
//foreign key
Property surveyIdForFollowupItem = followupItem.addLongProperty("surveyIdForFollowupItem").getProperty();
followupItem.addToOne(survey, surveyIdForFollowupItem);
survey.addToMany(followupItem, surveyIdForFollowupItem);
followupItem.addIdProperty();
followupItem.addStringProperty("assignedTo");
followupItem.addStringProperty("comment");
followupItem.addStringProperty("photoName");
followupItem.addStringProperty("photoURL");
followupItem.addDateProperty("assignedDate");
followupItem.addDateProperty("dueDate");
followupItem.addDateProperty("expeireDate");
//Category
Entity category = schema.addEntity("Category");
//foreign key
Property surveyIdForCategory = category.addLongProperty("surveyIdForCategory").getProperty();
category.addToOne(survey, surveyIdForCategory);
survey.addToMany(category, surveyIdForCategory);
category.addIdProperty();
category.addStringProperty("categoryId");
category.addStringProperty("name");
category.addStringProperty("weight");
category.addStringProperty("surveyId");
category.addDoubleProperty("totalScore");
category.addIntProperty("sortOrder");
category.addBooleanProperty("completionStatus");
category.addBooleanProperty("hasActionItem");
//Question
Entity question = schema.addEntity("Question");
//foreign key
Property categoryIdForQuestion = question.addLongProperty("categoryIdForQuestion").getProperty();
question.addToOne(category, categoryIdForQuestion);
category.addToMany(question, categoryIdForQuestion);
question.addIdProperty();
question.addStringProperty("questionId");
question.addDateProperty("startDate");
question.addDateProperty("endDate");
question.addStringProperty("statement");
question.addStringProperty("type");
question.addStringProperty("weight");
question.addStringProperty("surveyCategoryName");
question.addIntProperty("displayOrder");
question.addBooleanProperty("naFlag");
question.addBooleanProperty("isRequired");
//Question History
Entity questionHistory = schema.addEntity("questionHistory");
//foreign key
Property questionIdForQuestionHistory = questionHistory.addLongProperty("questionIdForQuestionHistory").getProperty();
questionHistory.addToOne(store, questionIdForQuestionHistory);
question.addToMany(questionHistory, questionIdForQuestionHistory);
questionHistory.addIdProperty();
questionHistory.addStringProperty("questionId");
questionHistory.addStringProperty("secondLastHistory");
questionHistory.addStringProperty("lastHistory");
//Answer
Entity answer = schema.addEntity("Answer");
//foreign key
Property questionIdForAnswer = answer.addLongProperty("questionIdForAnswer").getProperty();
question.addToOne(answer, questionIdForAnswer);
answer.addToOne(question, questionIdForAnswer);
answer.addIdProperty();
answer.addStringProperty("projectType");
answer.addStringProperty("assignedTo");
answer.addStringProperty("comment");
answer.addStringProperty("photoUrl");
answer.addStringProperty("photoNmae");
answer.addStringProperty("selectedOption");
answer.addDateProperty("assignedDate");
answer.addDateProperty("dueDate");
answer.addDateProperty("expireDate");
answer.addDoubleProperty("score");
}
请仔细阅读文档：
public ToOne addToOne(Entity target, Property fkProperty)
使用给定的外键属性（属于此实体）。
这意味着以下陈述是正确的：
Property storeIdForSurvey = survey.addLongProperty("storeIdForSurvey").getProperty();
survey.addToOne(store, storeIdForSurvey);
但是下一条语句不正确，因为Property storeIdForSurvey不是实体存储的成员：
store.addToOne(survey, storeIdForSurvey);
请尝试使用以下语句：
store.addToOneWithoutProperty("Survey", survey, "storeIdForSurvey");