Re: BigInteger as @Id

[Craig L Russell]

I think BigInteger should be supported by OpenJPA as a pk for an Entity. If your requirements go beyond the domain of Long, what do you do then?

Craig

On Aug 23, 2007, at 7:56 AM, Kevin Sutter wrote:

I'd like to see it standardized as a portable requirement for the next JPA specification.

Hi,

says "should be"...


to a single persistent field or property of

See section 9.1.8.

Also from Section 2.1.4:  The primary key (or field or property of a
composite primary key) should be one of the following types:
any Java primitive type; any primitive wrapper type; java.lang.String;
java.util.Date;
java.sql.Date. In general, however, approximate numeric types (e.g.,
floating point types) should

than these will not be portable.

java.util.Date is
used as a primary key field or property, the temporal type should be
specified as DATE.

When I just attempted it, I got the following error:

<openjpa-1.0.0-SNAPSHOT-r420667:568164 fatal user error>
org.apache.openjpa.util.MetaDataException: Type "class
org.apache.openjpa.persistence.simple.AllFieldTypes" declares field

are not supported.


the @Basic types?  Thoughts?

Thanks,
Kevin

Shouldn't BigInteger fields be allowed to be primary keys? According to section 2.1.4, the requirements on the @Id field are not real specific. It Section 2.1.4: A simple (i.e., non-composite) primary key must correspond the entity class. The Id annotation is used to denote a simple primary key. never be used in primary keys. Entities whose primary keys use types other If generated primary keys are used, only integral types will be portable. If "bigIntegerField" as a primary key, but keys of type "java.math.BigInteger" Any reason for this limitation? Looking at the ClassMetaData class, it looks like we are reading "should be" as "must be". Should we allow any of

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:[EMAIL PROTECTED]
P.S. A good JDO? O, Gasp!

smime.p7s
Description: S/MIME cryptographic signature