I would like to extend an @Entity
from a library that I don't have control of:
//commons package that I don't have control of
@Entity(name = TABLE_NAME)
public class CommonEntity {
public static string TABLE_NAME = "common_entity";
//like 30 fields with @Column annotations, hibernate validations etc
}
But how? I tried as follows, which fails:
//it's on a different database, just the schema should be extended
@Entity(name = CommonEntity.TABLE_NAME)
public class CustomEntity extends CommonEntity {
//some more fields
}
Result:
Caused by: org.hibernate.tool.schema.spi.SchemaManagementException:
Schema-validation: missing column [dtype] in table
As a result, I only want to have a single common_entity
table extended with my custom fields. I don't plan to store CommonEntity
objects directly to the table.
Is that possible? Would I somehow have to create that magical dtype
column myself?
CodePudding user response:
At the end I simply let hibernate create the dtype
column, so I can at least inherit all configuration from the commons entity, while only drawback is to have one "unneccessary" column.