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我还没有找到明确的答案，我希望有人能帮助我。我想在Mongo中“引用”的对象上创建一个复合索引。我显然遇到了一个错误，我将在代码片段下面描述。MongoDB/Morphia化合物索引与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;
}
而我得到的错误是：
异常线程“main” com.google.code.morphia.query.ValidationException：不能使用点符号过去的“位置”不能在“com.company.test.Team”中找到，而验证 - location.city
所以我想我的问题是：我会得到这个错误，因为“地址”是内“团队”的引用或我错过了别的吗？
感谢您的任何反馈意见。