Top 5 Java ORM tools - 2022


ORM stands for object-relational mapping, where objects are acclimated to connect the programming language on to the database systems, with the facility to work with SQL and object-oriented programming concepts. It is feasible for ORM to be implemented on any type of database management system where object mapping to the table can be achieved in the virtual system. There are many types of ORM tools in Java, which are listed below:

1. Hibernate

Hibernate is an open-source, non-invasive, lightweight java ORM(Object-relational mapping) framework to develop objects which are independent of the database software and make independent persistence logic in all JAVA, JEE. It provides some abstraction layer, meaning that the developers do not have to worry about the implementations, Hibernate does the implementations for us internally like Establishing a connection with the database, writing queries to perform CRUD operations, etc. It is used to develop persistence logic. Persistence logic means storing and processing the data for long use.

Some of the features of Hibernate:
  • Object-oriented query language
  • Transparent persistence without byte code processing
  • Object / Relational mappings
  • Automatic primary key generation
  • Object/Relational mapping definition
  • HDLCA (Hibernate Dual-Layer Cache Architecture)
  • High performance
  • J2EE integration
  • JMX support, Integration with J2EE architecture
Hibernate practice...

2. jOOQ

jOOQ is an ORM alternative that is relational model-centric rather than domain model-centric like most ORMs.It is a light database-mapping software library in Java that implements the active record pattern. Its purport is to be both relational and object-oriented by providing a domain-categorical language to construct queries from classes engendered from a database schema.

3. EclipseLink

EclipseLink is an open-source Eclipse Persistence Services Project from the Eclipse Foundation. The software provides an extensible framework that sanctions Java developers to interact with sundry data services, including databases, web services, Object XML mapping, and Enterprise Information Systems. EclipseLink is predicated on the TopLink product from which Oracle contributed the source code to engender the EclipseLink project. EclipseLink is the reference implementation of the Java Persistence API.

Some of the features of EclipseLink:
  • Handling of database change events
  • Composite persistence units to map entities to tables in multiple databases
  • Support for multi-tenancy

4. TopLink

The TopLink is a mapping and persistence framework for Java developers. TopLink is engendered by Oracle. It is an object-persistence and object-transformation framework. TopLink provides development implements and run-time functionalities that ease the development process and avail increase functionality. Persistent object-oriented data is stored in relational databases which avail build high-performance applications. Storing data in relational databases is made possible by transforming it from object-oriented data.

Some of the features of TopLink:
  • Auto-mapping of any subsisting data models and object models. 
  • Graphical mapping of an object model to the data model. 
  • Generation of the data model from its object model and vice versa.

5. IBatis / MyBatis

iBATIS is a persistence framework that automates the mapping between SQL databases and objects in Java. In Java, the objects are POJOs. The mappings are decoupled from the application logic by packaging the SQL statements in XML configuration files. The result is a significant reduction in the amount of code that a programmer needs to access a relational database utilizing lower-level APIs like JDBC and ODBC.

Some of the features of IBatis:
  • In memory object filtering
  • Fortifies clustering and simultaneous access by other applications without loss of transaction integrity
  • Query Caching - Built-in support
  • Fortifies disconnected operations
  • Support for Remoting. Distributed Objects.
MyBatis Practice:

Full stack development practice,

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