CODEWITHSUNDEEP
androidgreendaoobjectbox
motis10
motis10

Reputation: 2616

ObjectBox can't build project with inheritance

I created two objects. one extends the other. The parent object has an ID as it written in the ObjectBox documentation, but I can't build the project with the error of:

Error:[ObjectBox] Code generation failed: No ID property found for "Entity FastCacheData" (use @Id on a property of type long)

CacheData:

@Entity
public class CacheData {
    @Id
    private long id;
    @Index
    private String key;
    @Index
    private Date expirationDate;
    private Date lastUpdated;

    public CacheData(String key, Date expirationDate) {
        this.lastUpdated = new Date();
        this.key = key;
        this.expirationDate = expirationDate;
    }
}

FastCacheData:

@Entity
public class FastCacheData extends CacheData {
    private String fullName;
    private String thumbnailUrl;
    private boolean isSpam;

    @Convert(converter = DataSource.DataSourceConverter.class, dbType = Integer.class)
    private DataSource photoDataSource;

    @Convert(converter = DataSource.DataSourceConverter.class, dbType = Integer.class)
    private DataSource nameDataSource;

    public FastCacheData(String key, Date expirationDate, String fullName, DataSource nameDataSource, String thumbnailUrl, DataSource photoDataSource, boolean isSpam) {
        super(key, expirationDate);
        this.fullName = fullName;
        this.nameDataSource = nameDataSource;
        this.thumbnailUrl = thumbnailUrl;
        this.photoDataSource = photoDataSource;
        this.isSpam = isSpam;
    }
}

Upvotes: 0

Views: 227

Answers (1)

motis10
motis10

Reputation: 2616

Polymorphism of entities is not supported at this time, but there is a feature request.

Upvotes: 1

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