Hi,
References to Entities and ValueObjects from BasicTypes are not supported.
We should have added a constraint (error message) for that. We can probably
support it in future version. I think hibernate has support for it, but not
mandatory in jpa 1.0. I think it is in jpa 2.0.
/Patrik
dmadunic wrote:
>
> Hi all,
> in the advance tutorial description of the BasicType states:
>
> "BasicType is typically used for fundamental types, for example different
> quantities such as Money,
> or range of values."
>
> So, the emphasis was on "is typically used for fundamental types," which
> implies that i can use references to, lets say Entities in the BasicType
> if i would like to. Or not?
>
> I took library example and modiefed Country to be Entity and not Enum. So
> all of my Countries are stored in Database and when a new Country popup i
> do not need to modify code, compile, distribute, etc. just need to insert
> new record in database.
> So my Person module after this change looks like this:
>
> Module person {
> Service PersonService {
> findPersonByName => PersonRepository.findPersonByName;
> }
>
> Entity Person {
> gap
> scaffold
> Date birthDate past
> - @Gender sex !changeable
> - @Ssn ssn key
> - @PersonName name
>
> Repository PersonRepository {
> List<@Person> findPersonByName(String name) => AccessObject;
> save;
> save(Collection<@Person> entities);
> findByQuery;
> findByExample;
> findByKeys;
> }
> }
>
> BasicType Ssn {
> String number key length="20"
> - @Country country key
> }
>
> BasicType PersonName {
> String first
> String last
> }
>
> enum Gender {
> FEMALE("F"),
> MALE("M")
> }
>
> Entity Country {
> scaffold
> String code key
> String name
> int numeric
>
> Repository CountryRepository {
> @Country findCountryByCode(String code) throws
> CountryNotFoundException => findByKey;
> findById;
> findAll;
> save;
> delete;
> countAll;
> }
> }
> }
> }
>
> However, when i generate sources now, in the the Ssn java class I see
> following definition for the Country object:
> @Transient
> @NotNull
> private Country country;
>
> So, it is declared as Tranisent field!
> When i looked at the generated PersonBase java class i found another
> surprise, definition of the embeded object Ssn was as follows:
>
> @Embedded
> @AttributeOverrides({...@attributeoverride(name = "number",column =
> @Column(name = "SSN_NUMBER",nullable = true,length = 20)
> )
> , })
> @NotNull
> private Ssn ssn;
>
> So, no reference to country at all?
> But, Person java class stated following (i first deleted old class so the
> new one was generated to reflect changes in the model):
>
> @Entity
> @Table(name = "PERSON", uniqueConstraints = @UniqueConstraint(columnNames
> = {
> "SSN_NUMBER", "SSN_COUNTRY"}
> )
> )
> public class Person extends PersonBase {
> private static final long serialVersionUID = 1L;
>
> protected Person() {
> }
>
> public Person(Gender sex, Ssn ssn) {
> super(sex, ssn);
> }
> }
>
> However, field with name SSN_COUNTRY is nowhere defined? No Hibernate
> annotation references this field.
>
> Then, i modifed sculptor-generator.properties and declared
> db.product=mysql to see what would be the definition of the table. And as
> I expected the PERSON table does not contain any field which would store
> reference to COUNTRY table, and no FOREIGN KEY definition exists anywhere.
> Although, funnily, invalid unique constraint is created!
>
> CREATE TABLE PERSON (
> ID BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
> BIRTHDATE DATE NOT NULL,
> CREATEDDATE TIMESTAMP,
> CREATEDBY VARCHAR(50),
> LASTUPDATED TIMESTAMP,
> LASTUPDATEDBY VARCHAR(50),
> VERSION BIGINT NOT NULL,
> SSN_NUMBER VARCHAR(20) NOT NULL,
> NAME_FIRST VARCHAR(100) NOT NULL,
> NAME_LAST VARCHAR(100) NOT NULL,
> SEX VARCHAR(100) NOT NULL,
> CONSTRAINT UNIQUE (SSN_NUMBER, SSN_COUNTRY)
>
> );
>
> So, as far as i can see, it seems that references to the Entities can not
> be used in the BasicTypes, is this correct or not?
>
> Huh, i hope i have been clear enough.
>
> best
> Domagoj
>
>
> No mention of reference to COUNTRY?
>
>
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