Hibernate One to One Unidirectional Shared Primary Key

In this tutorial, we show you how to configure a Hibernate One-to-One Unidirectional Association with shared primary key using either annotations or xml mapping files.

Date: 2019-08-10 View: 1727

Hibernate Date, Time and DateTime Mapping

In this tutorial we show how to work with java.lang.Date to store Date, Time and DateTime using Hibernate Annotations or XML Mappings. Hibernate allows various Java Date/Time classes to be mapped. Like the java.sql.Date, java.sql.Time or java.sql.Timestamp. But to avoid dependencies on the java.sql package, it’s common to use java.util or java.time Date/Time classes instead.

Date: 2019-08-10 View: 1806

In this tutorial we show how to persist Java Enum types using Hibernate. Hibernate supports the mapping of Java enums as basic value types in various ways.

Date: 2019-08-10 View: 1707

Hibernate @Embeddable and @Embedded Annotation Example

In this tutorial we show how to embed one entity inside another entity, so they are mapped to a single table. With Hibernate we can use the @Embeddable annotation to mark a class to be eligible as an embeddable class. We can use the @Embedded annotation to embed an embeddable class. The attributes of embedded class can be overridden using the @AttributeOverrides and the @AttributeOverride annotations. Let’s see how this works, by following this example.

Date: 2019-08-10 View: 1734

This tutorial shows how to use the dynamic-insert attribute or @DynamicInsert annotation used by Hibernate. This attribute/annotation tells Hibernate whether to include null properties in the SQL INSERT statement.

Date: 2019-08-10 View: 1827

This tutorial shows how to use the dynamic-update attribute or @DynamicUpdate annotation used by Hibernate. This attribute/annotation tells Hibernate to only include the updated properties of the entity in the SQL UPDATE Statement.

Date: 2019-08-10 View: 1862

JPA EntityManager Example

This tutorial shows how to work with the Java Persistence API. The purpose of JPA is to create an abstraction layer between the database layer and an ORM framework. This enables us to loosely couple our code with any ORM framework and easily change from vendor.

Date: 2019-08-10 View: 2063

Hibernate/JPA Single Table Inheritance Example

In this tutorial, we show how to map entity hierarchies onto database tables. There are several ways of mapping inheritance to the database. Here, we’ll look into Hibernate/JPA single table inheritance.

Date: 2019-08-10 View: 2260

Hibernate/JPA Joined Table Inheritance Example

In this tutorial, we show how to map entity hierarchies onto database tables. There are several ways of mapping inheritance to the database. Here, we’ll look into Hibernate/JPA joined table inheritance.

Date: 2019-08-10 View: 2240

Hibernate/JPA Table Per Class Inheritance Example

In this tutorial, we show how to map entity hierarchies onto database tables. There are several ways of mapping inheritance to the database. Here, we’ll look into Hibernate/JPA table per class inheritance.

Date: 2019-08-10 View: 1604

This tutorial show how to use Hibernate/JPA Named Queries. We start by explaining why we would use named queries. Next, we show an example of how to use named queries, either with annotations or XML configuration.

Date: 2019-08-10 View: 2153

Previously, we saw how to use named queries. This tutorial, we show how to use Hibernate/JPA Named Native Queries. With Named Native Queries, we can use native SQL statements.

Date: 2019-08-10 View: 1660

This tutorial show how to use Named Stored Procedures using JPA with either XML and Annotations. We show a concrete example how to use Named Stored Procedures.

Date: 2019-08-10 View: 1879

This tutorial shows how to create batch insert and batch update statements using JPA and Hibernate. JDBC offers support for batching together SQL statements that can be represented as a single PreparedStatement. The JDBC driver will send the batched operation to the server in one call. This can potentially lead in a reduction to network bandwidth usage.

Date: 2019-08-10 View: 1724

Unit Test JPA with JUnit H2 In Memory Database

This tutorial shows how to Unit Test JPA with JUnit and a H2 In Memory Database. Some people disagree and don’t call these unit tests, but integration tests. Imho there is some truth in both. The following is not a pure unit test and neither is it a pure integration test. ‘Cause it doesn’t use an identical copy of the production database. That a side, let’s look at the example.

Date: 2019-08-10 View: 2070