如何告诉Hibernate注释@Column区分大小写？

Question

I'm trying to do a simple SELECT query in a table named ECM ( in uppercase ) on a Sybase db with Hibernate. I've annotated my DBO this way :

@Entity
@Table(name="ECM")
public class RelationshipDbo {
    ...
}

However, I'm facing a " table not found " error : the generated SQL has the table name in lowercase. I cannot change the database configuration to tell it to be case-insensitive.

I've also tried putting quotes like this :

@Table(name="`ECM`")

and this :

@Table(name="'ECM'")

Result : the quotes are added in the query, but the table name is still converted from uppercase to lowercase.

Technical information :

Hibernate 4.3
JPA 1.2
org.hibernate.dialect.SybaseDialect

Have you guys any idea?

EDIT: Also tried this Hibernate changes @Table(name) to lowercase

Then my columns names and table name are automatically quoted, but the names still get lowercased.

Answer 1

Try this:

Use backticks as in @Table(name="`ECM`")?

This must work from Hibernate point. If not then problem should be in DB (if i'm not wrong)

Answer 2

I think I have your answer:

Basically, you need to change the naming strategy for you JPA provider. How you do this will depend on how you setup your project.

In my case, using spring boot data I set a property in my application.properties to

spring.jpa.hibernate.naming-strategy=org.hibernate.cfg.EJB3NamingStrategy

Without more details from you I can't give more specifics on how to do this.

Answer 3

My goal is a little different since was trying to create tables upper case and hibernate created them in lower case. Also i was using MySQL not Sybase. But for me quoting the names like this worked:

@Entity
@Table(name="\"ECM\"")
public class RelationshipDbo {
    ...
}

Then tables were created upper case. Maybe that helps also for the queries.

Answer 4

What is your Sybase db version ? SybaseDialect has been deprecated in Hibernate 3.5 and then refactored since Hibernate 4.1 with a bunch of subclasses matching different versions of Sybase. Have you tried one of the subclasses to see if it makes any difference?

• org.hibernate.dialect.Sybase11Dialect
• org.hibernate.dialect.SybaseAnywhereDialect
• org.hibernate.dialect.SybaseASE15Dialect