[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2799) Default Scale value doesn't right
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http://opensource.atlassian.com/projects/hibernate/browse/HHH-2799?page=c...
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Henri Tremblay commented on HHH-2799:
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Hum... I'll comment my comment.
I just learned that typing Number create a floating point. That will bring me to think
that a it would be a bad thing to have a BigDecimal mapping to a floating point in the
database.
Putting 19 by default is a little surprising since the maximum for Oracle is 38 so one can
wonder where this value is coming from.
The 2 is also surprising since working in finance, for me 5 is the minimum default I would
use.
I fixed my issue typing everything with precision=38, scale=10 (19 with a scale of 10 is
too short).
So, I now one thing that disturbed me and one wish.
The 2 is still a bug from my point of view since the default in @Column is 0 according to
JPA. So I think the default should be respected or at least the 2 documented in hibernate
annotations' doc.
Then, what would be nice is to be able to set our own defaults for a given type.Right now,
that doesn't seem possible without overloading the dialect (and that might not be true
since I don't know if the scale and precision are used for something else than
database generation).
Default Scale value doesn't right
---------------------------------
Key: HHH-2799
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2799
Project: Hibernate3
Issue Type: Bug
Components: metamodel
Affects Versions: 3.2.0.ga
Environment: Name and version of the database you are using:MySQL 5.0.37
Reporter: Bliznets Roman
Original Estimate: 2 hours
Remaining Estimate: 2 hours
In my Mapping documents:
...
<property name="goodsNumeric" lazy="false" insert="true"
update="true" not-null="false" unique="false"
type="java.math.BigInteger">
<column not-null="false" unique="false"
name="`goodsnumeric`" precision="5"/>
</property>
...
From MySQL documentation
In standard SQL, the syntax DECIMAL(M) is equivalent to DECIMAL(M,0).
But In log and in database scale=2, it's have to be exactly 0.
Debug level Hibernate log excerpt:
12484 [main] DEBUG org.hibernate.tool.hbm2ddl.SchemaUpdate - create table
`goodsitembasetype` (e_id bigint not null auto_increment, e_version integer not null,
`goodsnumeric` numeric(5,2), `grossweightquantity` numeric(19,6), `netweightquantity`
numeric(19,6), `invoicedcost` numeric(16,2), `customscost` numeric(16,2),
`statisticalcost` numeric(16,2), primary key (e_id))
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