[0.9.14] relation bug

[DJafari]

@Entity
public class NewsGroup {
    @SerializedName("id")
    @Id(assignable = true)
    private long id;

    @SerializedName("name")
    private String name;

    @SerializedName("icon")
    private String icon;

    @SerializedName("color")
    private String color;

    @SerializedName("group")
    @Backlink
    List<NewsCategory> groups;

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getIcon() {
        return icon;
    }

    public void setIcon(String icon) {
        this.icon = icon;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public List<NewsCategory> getGroups() {
        return groups;
    }

    public void setGroups(List<NewsCategory> groups) {
        this.groups = groups;
    }
}

@Entity
public class NewsCategory {
    @SerializedName("id")
    @Id(assignable = true)
    private long id;

    @SerializedName("name")
    private String name;

    @SerializedName("icon")
    private String icon;

    @SerializedName("color")
    private String color;

    @Relation
    NewsGroup group;

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getIcon() {
        return icon;
    }

    public void setIcon(String icon) {
        this.icon = icon;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public NewsGroup getGroup() {
        return group;
    }

    public void setGroup(NewsGroup group) {
        this.group = group;
    }
}

when build project :

NewsCategoryCursor.java :
Error:(51, 45) error: cannot find symbol variable groupToOne
Error:(70, 37) error: cannot find symbol variable groupToOne

NewsGroup_.java
Error:(106, 30) error: cannot find symbol variable groupToOne

[greenrobot]

Right, to-ones have to be adjusted. We have to update the docs.
Change

@Relation NewsGroup group;

to

ToOne<NewsGroup> group;

Getters can return group.getTarget() and setter should do group.setTarget(group). Note that you do not have to init the ToOne field by hand; this is done by ObjectBox.

[DJafari]

goood, thanks, clean model is good idea, thanks for it

[DJafari]

@greenrobot in ToOne<NewsGroup> group; type, how can set idProperty for ToOne field ?
like this :

@Relation(idProperty = "myCustomerId")
Customer customer; // Customer is another @Entity class

[greenrobot]

Is that what you mean?

ToOne<Customer> customer; // Customer is another @Entity class
...
customer.setTargetId(id);

[DJafari]

@greenrobot

for example i have a customer_id that parsed from network json on in this model and persist in objectbox, i want when query to this database, customer fill automatically by customer_id,
this example :

@Entity
public class Order {
    @SerializedName("id")
    @Id(assignable = true)
    private long id;

    @SerializedName("name")
    private String name;

    @SerializedName("customer_id")
    private long customer_id;

    ToOne<Customer> customer;
}

how can do this for this example ?
thanks

[greenrobot]

@DJafari Does this still work?

@ Relation(idProperty="customer_id")
ToOne<Customer> customer;

[DJafari]

@greenrobot

Error:[ObjectBox] Relation target class 'ToOne' defined in class 'Order' could not be found (is it an @Entity?)

Customer has @Entity annotation

P.S: if ToOne class defined in Entity, it check ToOne class to has annotation class or not ?

[greenrobot]

Will look into it. In case we forget (main issue is closed), please open a new issue.