Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

Does Hibernate 5 support XML based entity mappings?

Hi my question is not technical. I want to know if hibernate 5 supports XML based entity mapping or not.

My requirement is like below :

I want a backend on Jersey-Hibernate. My front end is Android application. I want to keep my Entity POJOs in a common project such that they will be shared by both app and server. Gson will serialize/deserialize both side. But because android application doesn't support all java library in compilation, I don't want my common(POJO) depending on some library; In this case hibernate annotations. So I am planning to use XML based configuration.

like image 412
Kuldeep Yadav Avatar asked Aug 13 '16 02:08

Kuldeep Yadav


People also ask

What is hibernate mapping XML?

Hibernate allows you to work with persistent XML data in much the same way you work with persistent POJOs. A parsed XML tree can be thought of as another way of representing the relational data at the object level, instead of POJOs. Hibernate supports dom4j as API for manipulating XML trees.

Is hibernate XML deprecated?

xml is/will be deprecated and will be replaced by some sort of “extended JPA orm. xml” mapping in Hibernate 7.

What are the various types of mappings available in hibernate?

These types are “clob”, “blob”, “binary”, “text” etc. Clob and blob data types are present to maintain the data type mapping of large objects like images and videos.

What is entity Relationship mapping in hibernate?

hibernate mappings are one of the key features of hibernate . they establish the relationship between two database tables as attributes in your model. that allows you to easily navigate the associations in your model and criteria queries.


2 Answers

Hibernate 5 supports both the legacy HBM mappings as well as the JPA XML mappings too. However, HBM mappings are no longer the recommended approach to map entities. As illustrated in the new User Guide, all examples make use of annotations.

There are more features provided by Hibernate-specific annotations than it is the case with HBM mappings. In Hibernate 6, it is planned to add an extension mechanism to the JPA XML mappings, therefore HBM mappings are deprecated.

Since you are migrating to Hibernate 5, it's a good idea to migrate from HBM to annotations too.

like image 88
Vlad Mihalcea Avatar answered Sep 29 '22 00:09

Vlad Mihalcea


Yes, according to documentation (where authors recommended using annotations for mapping) is said that xml mapping is still possible: docs

So on - you can still us *.hbm.xml for entity mapping.

EDIT: ofc I mean *.hbm.xml

like image 20
ByeBye Avatar answered Sep 28 '22 23:09

ByeBye