Hello,
I'm using Hibernate OGM with MongoDB.
i have a problem with a class that should have a "join" on two other classes. Basically. If i use the "Utenti" class created in this way:
Code:
@Entity
@Indexed
@Table(name="users")
public class Utenti implements Serializable {
public Utenti() {
}
/**
*
*/
private static final long serialVersionUID = 5495044706694401513L;
@Id
@GeneratedValue(generator = "uuid")
@GenericGenerator(name = "uuid", strategy = "uuid2")
@Type(type = "objectid")
public String id;
@Column(name="salt")
private String salt;
@Column(name="username")
private String username;
And use the session factory there are no problem. All works flawlessy. While on my "Report" class that has two link to "Utenti" class i have a problem when i try to use a "where" clause to filter the ID. The class is this one:
Code:
@Entity
@Indexed
@Table(name="reports")
public class Reports implements Serializable {
public Reports() {
}
/**
*
*/
private static final long serialVersionUID = 5688689875181900535L;
@Id
@GeneratedValue(generator = "uuid")
@GenericGenerator(name = "uuid", strategy = "uuid2")
@Type(type = "objectid")
private String id;
@Column(name="description")
private String description;
@JoinColumn(name="verifiedBy")
@OneToOne
//@Column(name="verifiedBy")
private Utenti verifiedBy;
@JoinColumn(name="user")
@OneToOne
//@Column(name="user")
private Utenti user;
@JoinColumn(name="category")
@OneToOne
//@Column(name="category")
private Categories category;
@Column(name="reportDate")
private String reportDate;
@Column(name="reportTime")
private String reportTime;
@Column(name="thumbnail")
private String thumbnail;
@Column(name="image")
private String image;
@Column(name="lat")
private Double lat;
@Column(name="lon")
private Double lon;
@Column(name="elevation")
private Integer elevation;
@Column(name="__v")
private Integer v;
/* getters an setters */
When i try to filter the reports using this query:
Code:
list = session.createQuery("from Reports where user=:IDUtente").setParameter("IDUtente", new String(userId)).list();
I receive this error:
org.hibernate.property.access.spi.PropertyAccessException: Error accessing field [public java.lang.String it.papersoft.hibernate.Utenti.id] by reflection for persistent property [it.papersoft.hibernate.Utenti#id] : 577d485b55fade0e001759e6
at org.hibernate.property.access.spi.GetterFieldImpl.get(GetterFieldImpl.java:43)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:223)
...
caused by: java.lang.IllegalArgumentException: Can not set java.lang.String field it.papersoft.hibernate.Utenti.id to java.lang.String
I've tried different way to use the ID and also the class (as you can see the @Column annotation). So.. my question is. What is the correct way to embed an external class with OGM?
Thank you
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