Join statements are used when one wants to fetch data from multiple tables of database. Hibernate provides support for join statements where one can write single query to fetch data from multiple tables easily. Hibernate is one of the few JPA (Java Persistence API) providers. Hibernate is extensively used for persistence layer of building an enterprise application. We will show ...

In this example, we will show how to use hibernate to insert data into database. Hibernate is one of the few JPA (Java Persistence API) provider. Hibernate is extensively used for persistence layer of building a enterprise application. We will configure our hibernate with hibernate.cfg.xml and then we will create an example mapping with example.hbm.xml. We will show how a ...

1. Introduction To develop web applications these days, we use Modern View Controller architecture. Spring provides MVC framework with ready components that can be used to develop flexible and loosely coupled web applications. MVC framework provides separation between input logic, business logic and UI logic. Model encapsulates the application data View is responsible for rendering the model data Controller is ...

In this example, we will show you how to use hibernate with its mapping capability. We are going to show a one-to-many bi-directional mapping in hibernate using XML mappings. We will configure our hibernate with hibernate.cfg.xml and then we are going to create a mapping with example.hbm.xml . One-to-many relationship is the relationship in which each record in one table ...

1. Introduction Hibernate is a high performance Object/Relational mapping (ORM) framework completely used in Java. Hibernate also provides query service along with persistence. This gives developers a way to map the object structures in Java classes to relational database tables. ORM framework eases to store the data from object instances into persistence data store and load that data back into ...

In this example, we will show how to configure hibernate. Hibernate requires to know in advance where to find all the mapping information related to java classes and database tables. There are some other database related settings that hibernate needs which are provided through configuration file. These configuration settings can be provided programmatically OR through a configuration file called hibernate.cfg.xml ...

In this example, we will see how to use Maven for dependency management. Maven is a build manager tool and mostly used in java projects. Maven was built on a central concept of project object model (POM). Maven addresses two steps for any project – first how a project is built and second how the dependencies are described. 1. Environment ...

In this example, we will show how to use Jetty Continuations. Continuations are a way to implement asynchronous servlets. Added advantage of this feature compared to asynchronous feature of Servlet 3.0 api, is that it provides simple and portable interface. Jetty continuations suspend an HTTP request and releases the thread to the thread pool. It restarts suspended request on an ...

In this example, we will show how to use Jetty in Standalone mode. Jetty server can be used to deploy web servlets. We will show how a standalone jetty is configured and how a different configurations can be used to write a simple web servlet and deploy it on jetty server. Previously we saw how to use jetty in embedded ...

In this example, we will show how to use Jetty in embedded mode. Jetty can be used in standalone mode, but the main purpose behind building jetty was so that it could be used inside an application instead of deploying an application on jetty server. Generally you write a web application and build that in a WAR file and deploy ...