Hibernate is the object-relational mapping framework that allows mapping an object-orientated domain version to a relational database. The first model of hibernating changed into evolved in 2001 cirus technologies via Gavin king to offer extra continual potential than those of ejb2. Later diverse hibernate variations have been released with adding extra functions. Hibernate 2 changed into released via adding extra capabilities to the first model. Later 3.0 or 3 series were released with new functions of interceptors, filters, and JPA specifications. Hibernate 4.0 and/or 4 collections released with functions like multi-tenancy, advanced session control, JPA 2.1 specification, and much greater. With hibernate 5.0 and the higher version released with bootstrapping, entity graph functionalities, assist with present-day java variations, and lots more.

Following are the different versions of hibernating.

It was developed to support the java 1.5 version with full-featured query facilities and enhanced EJB3 persistence.

Provided API with enhanced Hibernate query criteria and support for the queries expressed in the Native SQL dialects of the database.

Added filters while working with temporal or regional data.

Enhanced query API which supports projection and subselects.

Runtime performance monitoring is added with the help of JMX or Local java APIs.

Dual-layered architecture helps in working with clustered architecture.

Automatic key generation- hibernate automatically generates primary keys for tables.

Hibernate 3 works with JDK 1.3 and higher versions up to JDK 1.5.

Hibernate 4 was released in 2011 added with new features of multi-tenancy, service registry, SessionFactory clean-up, auto-discovery, full support of i18n, etc.

Multi-tenancy supports the separation of clients in big applications instead of shred space. Hence improved security and improved management.

An added feature of a new way of accessing Session Factory after combining existing services in the framework of a single record.

Adequate framework for OSGi Open Service Gateway Initiative platform that divides the classes into each package into three different categories – Public, Internal, and SPI.

Verifying dirty objects i.e. allows the user to specify when an object should be considered dirty.

Full support of i18n helps internationalization log messages using Jboss logging.

Inbuilt cleanup code deprecated methods and interfaces.

Hibernate ORM 4.0.3 comes with fully JPA 2.1 and this version can be used with JDK 7 based applications. This version certified version of full JPA 2.1 specifications. It supports stored procedures, batch updates, etc.

Added with the feature of a stored procedure.

Support to executing update and delete queries in type-safe Criteria helps in executing CriteriaUpdate and CriteriaDelete.

This version support attribute converters.

Dependency injection through Contexts of Dependency Injection.

@ConstructorResult support was added for the result set mapping using native queries.

Support synchronization contexts through SynchronizationType.

It is one of the major updates in hibernate ORM fully supported features of the Java 8 version. This release has major important feature improvements in ORM. It provides persistent support to NoSQL databases, today NoSQL databases are used to handle large databases. This version best fits with the maven repository to handle Hibernate 5 library.

Bootstrap: This bootstrap comes with hibernate ORM.in, this version new bootstrap mechanism of hibernating SessionFactory has been introduced with many advanced features.

Modularity: This version supports Wildfly and OSGi hence it helps in installing, activating, deactivating, uninstalling during runtime.

Added new features of Java 8 Date and Time API i.e. DATE, TIME, and TIMESTAMP.

Bytecode Augmentation: This includes smarter change detection, bidirectional database relationship Management, Enhanced dirty object checking.

Attribute Converter: With added naming strategy physical and implicit, Enums without @Enumerated, Invoked on null values, @ElementCollection, @MayKey, @GeneratedValues, etc.

OGM: Object /Grid Mapping- this is one of the major features added with Hibernate 5, OGM helps in the ability persistence to the NoSQL database this helps to interact with NoSQL databases such as MongoDB, Cassandra, Redis, etc…

Hibernate Search: Hibernate 5 comes with a full-text search by using Lucene 5.

Hibernate 5.3 is an upgraded version of 5.2 ORM. It comes with Hibernate Search 5.9. This version supports Java 8 and the latest versions and JPA 2.1 and the latest versions. Hibernate Search provides the functionality of a full-text search.

It supports the compatibility with hibernate ORM 5.2.

In this version bugs related to native query pagination and projection are fixed.

This is an upgraded version of Hibernate ORM 5.2 and Hibernate Search 5.9.

Compatible with Java 8 and the latest version, JPA 2.1 and Hibernate ORM 5.2, Hibernate search 5.9.

Hibernate OGM is also compatible with this version.

Improved Infinispan clustered counters are used for sequence generation in hibernate and this has been created during application start-up.

While using infinispan it takes a table name and column name.

This version was released in 2019. added two important features compared with the previous version.

This version is compatible with Java 8 and Java 11 and with JPA 2.2.

Added with new features of EntityGraph parsing functionality. This is the ability to create a graph with String representation.

EntityGraph Manipulation this functionality is mainly used for combining graphs.

Enhancement in bug fixes and Gradle Plugin.

In this blog, we will discuss the Top 6 Hibernate Versions

Top 6 Hibernate Versions

Hibernate annotations can be taken into consideration as metadata to link the java programs to the relational database within the backend. Hibernate is used to map the conventional relational databases with the front-give-up java packages. Hibernate works as a bridge to connect item-oriented language (java) to relational databases both with the assist of a report finishing with “.Hbm” containing all the important mapping or the identical mapping may be finished using annotations. Annotations are embedded in java accordingly doing away with using developing any unique record. Annotations may be diagnosed through “@” at the start of the entity forex: @entity, @table, @identification, and many others.

Annotations are derived out of the number one Java package named java. Staying power to support its use. Annotations are primarily based on JPA (java staying power API) specifications. To enforce java annotations we ought to make certain to use JDK 5.0 or the above model.

Dive deeper into some of the code snippets explained:

We need to set up some files before running a hibernate program. Outlines of steps to be followed for writing a hibernate program using annotations.

You need to have hibernated annotations installed in your device preferably Hibernate 3. x and copy hibernate-annotations.jar, lib/ejb3-persistence.jar, and lib/hibernate-common-annotations.jar to your CLASSPATH environment variable.

To create a Maven project using Eclipse IDE. We can choose the file (top right corner) -> New-> Maven project and then select the desired workspace in the following pop screen.

By clicking on catalog type we get options to select group ID, artifact ID, and version as per your requirements. This can be chosen from the pop-up.

Add dependencies and configurations in the pom.xml file. You can locate the pom file in the right-side drop-down list under the project you created in step 1.

Since oracle drivers are not there in the public Maven repository so they need to be installed from outside. After installing Maven, we need to follow this path to install oracle.

install-file -Dfile=Path/to/your/ojdbc14.jar -DgroupId=com.oracle -DartifactId=ojdbc14 -Dversion=12.1.0 -Dpackaging=jar

Now we can create a persistence class containing annotations. This class can be saved with an extension of “.JAVA”.

We have to create one config file with an extension of “.cfg.XML”.

Finally, create a class to store or retrieve data. This will be saved as an extension of “.JAVA”. This file will be the main triggering file which in turn invokes files that we created initially.

Below is the database query to create a table.

//this defines a code under the package. This is kind of encapsulates the code in the package.

//Table annotation is to be used in the below code that is the reason we are getting the characteristics of table annotations from the persistence class.

//Id annotation is to be used in the below code that is the reason we are getting the characteristics of table annotations from the persistence class.

//Entity annotation is to be used in the below code that is the reason we are getting the characteristics of table annotations from the persistence class.

//This is a way to use annotations. We prefix the element from the “@” sign. This annotation marks the class as an entity bean so it will have a no-argument constructor and will have a protected access modifier.

//name is the characteristic of table entity. The table is coming from the relational database. The name of the table to be stored is “Edu_rec” This annotation can be used to modify various attributes of the table like its schema, name, and much more.

//encapsulating the code in the public class trainee.

//This annotation is to denote the primary key.

//declared some private integer and string data-type to store the unique identification code, first and last name to store or get data from the table saved in database. These data –types connect to table data via annotations.

// This function is created to get the unique identification code from the database table. This code is to pull out data from the database for display or some other use in the front end.

//This function is to set the unique code in case the code is not there in the database. “This” pointer here points towards the current code which needs to be updated to the code which we are passing as a parameter to this function.

// This function is created to get the first name from the database table. This code is to pull out data from the database for display or some other use in the front end.

//This function is to set the first name in case the code is not there in the database. “This” pointer here points towards the current code which needs to be updated to the code which we are passing as a parameter to this function.

//Same as above the only difference is that we are dealing with data containing the last name in the case of the first name.

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