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Tag Archives: Spring

Using jOOQ with Spring: CRUD

jOOQ is a library which helps us to get back in control of our SQL. It can generate code from our database and lets us build typesafe database queries by using its fluent API. The earlier parts of this tutorial have taught us how we can configure the application context of our example application and generate code from our database. ...

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Spring Test Context Caching + AspectJ @Transactional + Ehcache pain

Are you using AspectJ @Transactionals and Spring? Do you have multiple SessionFactory’s maybe one for an embedded database for unit testing and one for the real database for integration testing? Are you getting one of these exceptions? org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.service.UnknownServiceException: Unknown service requested or java.lang.NullPointerException at net.sf.ehcache.Cache.isKeyInCache(Cache.java:3068) at org.hibernate.cache.ehcache.internal.regions.EhcacheDataRegion.contains(EhcacheDataRegion.java:223) Then you ...

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Spring-boot and Scala

spring-interview-questions-answers

There is actually nothing very special about writing a Spring-boot web application purely using Scala, it just works! In this blog entry, I will slowly transform a Java based Spring-boot application completely to Scala – the Java based sample is available at this github location – https://github.com/bijukunjummen/spring-boot-mvc-test To start with, I had the option of going with either a maven ...

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The Builder pattern and the Spring framework

spring-interview-questions-answers

Introduction I like to make use of the builder pattern whenever an object has both mandatory and optional properties. But building objects is usually the Spring framework responsibility, so let’s see how you can employ it using both Java and XML-based Spring configurations. A Builder example Let’s start from the following Builder class.   public final class Configuration<T extends DataSource> ...

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SpringMVC4 + Spring Data JPA + SpringSecurity configuration using JavaConfig

spring-interview-questions-answers

In this article we will see how to configure and integrate SpringMVC4, Spring Data JPA with Hibernate and SpringSecurity using JavaConfig. 1. First let’s configure all the necessary dependencies in pom.xml                 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.sivalabs</groupId> <artifactId>spring-javaconfig</artifactId> <version>1.0</version> <packaging>war</packaging> <name>SpringApp JavaConfig Demo</name> <properties> <java.version>1.7</java.version> <junit.version>4.11</junit.version> <slf4j.version>1.7.5</slf4j.version> <logback.version>1.0.13</logback.version> <spring.version>4.0.0.RELEASE</spring.version> <spring-data-jpa.version>1.4.1.RELEASE</spring-data-jpa.version> <spring-security.version>3.2.0.RELEASE</spring-security.version> ...

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