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我還沒有找到明確的答案，我希望有人能幫助我。我想在Mongo中「引用」的對象上創建一個複合索引。我顯然遇到了一個錯誤，我將在代碼片段下面描述。MongoDB/Morphia化合物索引與DBRef
@Entity
public class Address {
public Address (String street, String City, String state, String zip) {
this.street = street;
this.city = city;
this.state = state;
this.zip = zip;
}
// Getters and Setters
@Id private ObjectId id;
private String street;
private String city;
private String state;
private String zip;
}
@Entity
@Indexes(@Index("location.city, name"))
public class Team {
public Team (String sport, String name, Address location) {
this.sport = sport;
this.name = name;
this.location = location;
}
// Getters and Setters
@Id private ObjectId id;
private String sport;
private String name;
@Reference private Address location;
@Reference private List<Player> players;
}
而我得到的錯誤是：
異常線程「main」 com.google.code.morphia.query.ValidationException：不能使用點符號過去的「位置」不能在「com.company.test.Team」中找到，而驗證 - location.city
所以我想我的問題是：我會得到這個錯誤，因爲「地址」是內「團隊」的引用或我錯過了別的嗎？
感謝您的任何反饋意見。