小编Sho*_*rtz的帖子

我有具有泛型类型的抽象类。它具有抽象的 toBuilder 方法，如下所示：在抽象类上使用 Lombok @SuperBuilder 注释和 toBuilder？

这是抽象类：

@Data
@SuperBuilder(toBuilder = true)
public abstract class TenantConfItem<T extends DeepCloneable<T>> {

    private final URN urn;

    private final Long version;

    private final T configData;

    public abstract TenantConfItemBuilder<T, ?, ?> toBuilder();

    public TenantConfItem<T> copy() {
        return this.toBuilder().build();
    }
}

子类型：

@SuperBuilder(toBuilder = true)
@EqualsAndHashCode(callSuper = true)
public class PointsExpirationByEarnedDatePolicy extends TenantConfItem<ExpirationByEarnedDate> implements Singleton {

}

我在这里使用它的构建器：

val policyBuilder = PointsExpirationByEarnedDatePolicy.builder()
                .version(0L)
                .configData(new ExpirationByEarnedDate(retentionDays));

但我收到 configData 错误：

error: incompatible types: CAP#1 cannot be converted …