Updating from Hibernate 3.6 to Hibernate 4.0 - java

I want to know the key differences I need to take care of if I want to switch to Hibernate 4.0 from Hibernate 3.6 ? Does Hibernate 4.0 support hbm.xml or do I need to use JPA for mapping?

Hibernate 4 still supports ORM mapping via XML (hbm.xml). As suggested by the mapping section in this basic hibernate 4 tutorial.

You should read the migration guide
https://community.jboss.org/wiki/HibernateCoreMigrationGuide40

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Hibernate 5.4 filter support with JPA 2.1

Have search on many place's but did't found a single statement about the Hibernate filter (5.4) version support with JPA 2.1
Is JPA 2.1 and hibernate filter 5.4 compatible or not ? I can see most of the things are depricated by Hibernate in 5.4 So not sure if we can still used filter with JPA 2.1 (with EntityManager) or not.
Also, How can we used that ? Can anyone please share any example for reference ?
Note: I saw we can used unwrap<> things to work with Entitymanager as session I think depricated in Hibernate 5.4.
Thanks!!

Can Hibernate Oracle12c dialect used hibernate 4.3

I see that Oracle12c dialect is available only for hibernate 5.
https://docs.jboss.org/hibernate/orm/5.0/javadocs/org/hibernate/dialect/Oracle12cDialect.html
Sadly I can't upgrade the hibernate from version 4.3.11.Final
and I would like to know if there's a way to "backport" or force to use this dialect in hibernate 4.3.
You have 2 options:
Use Oracle10gDialect, since Oracle 12c is backwards compatible, you just won't use new features.
Grab the source from Hibernate 5.4.5: https://github.com/hibernate/hibernate-orm/blob/5.4.5/hibernate-core/src/main/java/org/hibernate/dialect/Oracle12cDialect.java

Where can I find documentation for Hibernate's legacy hbm.xml mapping files?

I have joined a new team, and their project is using pretty much exclusively legacy-style Hibernate Mapping files (*.hbm.xml) for their Hibernate set-up. The current documentation pretty much seems to restrict itself to mention that Hibernate still supports hbm files and that they will take precedence over annotations.
Can someone please provide a link to documentation that mainly deals with Hibernate's legacy Mapping Files? (Even older versions of the doc only seem to mention them in passing?)
Which version of Hibernate you use?
I found documentation for XML mapping for version 3.3 under this link.
Hibernate Mapping doc
All of the hibernate documentation: https://docs.jboss.org/hibernate/orm/
This appears to be the latest reference to the hbm.xml mapping:
https://docs.jboss.org/hibernate/orm/5.0/manual/en-US/html/ch05.html

Hibernate: many-to-many mapping with an order-column

I want to use a many-to-many relation between System & Device. I want the system to know its devices order.
I've seen here that I can do it using #OrderColumn.
How can I do it using hibernate xml configuration instead of annotation?
If you're using Hibernate you could try with
sort="unsorted|natural|comparatorClass"
order-by="column_name asc|desc"
as attributes of your relatonship declaration
#OrderColumn is the JPA annotation introduced in JPA 2.0. This works as an additional feature if we work hibernate through JPA. There is no equivalent replacement in hibernate who work with hibernate directly.

JPA equivalents to Hibernate org.hibernate.criterion.Example?

I have an application that uses Hibernate. We are moving to JPA 2.1 standard.
There are a lot of usage of "org.hibernate.criterion.Example" with its (excludeProperty) feature. Is there any equivalent to "Hibernate Example" in JPA 2.1?
Thanks.
JPA doesn't offer this yet but there are some open source frameworks which allow you to query by-example:
a Spring Data custom implementation
jaxio

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