Introduction I am going to show you here what is UserType and why do you need UserType while working with database and web application. In Hibernate UserType Example using Spring Data JPA I will show you how Hibernate allows you to implement and use custom types when built-in types do not satisfy an application’s requirements,…

Posted in Hibernate Spring Boot Spring JPA

Hibernate UserType Example using Spring Data JPA

Introduction Spring EnableEncryptableProperties with Jasypt shows an example how to avoid putting clear text password for database connection’s credentials in properties file. Jasypt means Java simplified encryption. Here I am going to use Spring Boot with Jasypt (Java simplified encryption). Here I am also going to use Spring Data JPA to perform the data layer…

Posted in Spring Boot Spring JPA Spring REST Spring Security

Spring EnableEncryptableProperties with Jasypt

Introduction In this post I will show you how to configure JNDI datasource with Spring Boot applications. JNDI (Java Naming Directory Interface) data source is very similar to JDBC (Java Database Connectivity) data source. I will show examples on Oracle as well as MySQL database servers. The MySQL version example is downloadable at the end…

Posted in Spring Boot Spring JPA

Configure JNDI DataSource with Spring Boot

Introduction Here I am going to show you how to resolve issue org.hibernate.mapping.exception: No Dialect mapping for JDBC type that occurs in your Hibernate based application due to some types mismatch between database table column and Java field. You might have seen similar kind of exception occurred during performing native queries without entity class and…

Posted in Hibernate Spring JPA

org.hibernate.MappingException: No Dialect mapping for JDBC type

One of the important features in Spring Data JPA or simply JPA is the ability to specify fetch plans using Entity Graphs. This is useful since it allows you to customize the data, which is retrieved with a query or find operation. It is expected to display data from the same entity in different and…

Posted in MySQL Spring Boot Spring JPA

Spring Data JPA Entity Graphs

Introduction In this tutorial I will show you an example on Spring Data JPA CRUD. Here I will use the embedded or in-memory HSQL database. CRUD means Create, Read, Update, Delete. So I am going to perform basic CRUD operations on some entities. In this example I will create annotation based Spring standalone application. Related…

Posted in Spring Core Spring JPA

Spring Data JPA CRUD Example

Introduction In unidirectional association, you will have navigation only in one direction, i.e, only one side of the association will have the reference to the other side. The one side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In many to one relationship, multiple source…

Posted in Spring Boot Spring JPA

Spring Boot Data JPA Unidirectional Many-To-One Relationship