Spring Querying data from a method does not recognize a column

Question

I use Spring Data, I created my entities wrapped inside "AbstractEntity", which all objects propagate to the base columns

AbstractEntity:

@MappedSuperclass
public abstract class AbstractEntity implements Serializable{

    @Temporal(TemporalType.TIMESTAMP)
    @Column(nullable = false)
    private Date CreatedDate;

    @PrePersist
    protected void onCreate() {
        UpdatedDate = CreatedDate = new Date();
    }

...

And my object / object

@Entity
public class Trade extends AbstractEntity {

When I try to use my repository to create a method findByCreatedDateAfter(Date date)

I get an exception that the column cannot be found ...?

public interface TradeRepository extends CrudRepository<Trade, Long>{

    public List<Trade> findByCreatedDateAfter(Date date);
}

It compiles (if I use specific capitolization), but than trying to match the request, I get:

Caused by: java.lang.IllegalArgumentException: Unable to locate Attribute  with the the given name [createdDate] on this ManagedType [streaming.data.AbstractEntity]

I would also like to return sum(amount)one of the quantity columns for this period.

Any advice appreciated!

thanks

Answer 1

Java. createdDate, createdDate .

, @Column ( ).