Programming Tutorials Browser Tutorials Articles Struts Tutorials Hibernate Tutorials

  Tutorial: Hibernate Query Language

Hibernate Query Language or HQL for short is extremely powerful query language. HQL is much like SQL and are case-insensitive, except for the names of the Java Classes and properties.

Tutorial Details:

Hibernate Query Language is used to execute queries against database. Hibernate automatically generates the sql query and execute it against underlying database if HQL is used in the application. HQL is based on the relational object models and makes the SQL object oriented. Hibernate Query Language uses Classes and properties instead of tables and columns. Hibernate Query Language is extremely powerful and it supports Polymorphism, Associations, Much less verbose than SQL.

There are other options that can be used while using Hibernate. These are Query By Criteria (QBC) and Query BY Example (QBE) using Criteria API and the Native SQL queries. In this lesson we will understand HQL in detail.


 

Rate Tutorial:
http://www.roseindia.net/hibernate/hibernatequerylanguagehql.shtml

Read Tutorial at: Click here to view the tutorial

Rate Tutorial:
Hibernate Query Language

View Tutorial:
Hibernate Query Language

Related Tutorials:

Write once, persist anywhere
Write once, persist anywhere
 
Comparison between the two major JDO architectures
Comparison between the two major JDO architectures
 
Smart Value Object goes one step further
Smart Value Object goes one step further The Smart Value Object allows server components to track client-side modification of business objects in a rich client/J2EE server environment, by using the latest features offered by bytecode processing tools.
 
Object-relation mapping without the container
If you follow the latest developer buzz then you\\\\\'ve likely heard of IOC (Inversion of Control) containers and AOP (aspect-oriented programming).
 
Capture the benefits of asynchronous logging
Capture the benefits of asynchronous logging Develop an asynchronous log service using JMS and Hibernate This article will help you develop a simple log service. The service creates some log messages, sends them across the network to a JMS provider,
 
Simple classes for JDBC
Simple classes for JDBC
 
Framework for Java Database Connectivity
What is Framework for Java Database Connectivity? The Framework for Java Database Connectivity (JDBC) was implemented to demonstrate the ease with which a JavaTM application may be designed to access a source code repository using a relational query lang
 
Working with Hibernate in Eclipse
Working with Hibernate in Eclipse Eclipse is a great example of the power of an open, extensible environment in which people all around the world can contribute.
 
Introduction to Jena
Introduction to Jena Use RDF models in your Java applications with the Jena Semantic Web Framework RDF is increasingly recognized as an excellent choice for representing and processing semi-structured data. In this article, Web Developer Philip McCart
 
An example of public use
ashkelon lite "ashkelon lite" provides all the benefits of the ashkelon product without any of the hassle and overhead. It's ashkelon in a war file. There's no need to setup a database, no need to configure _anything_, not even to populate a repository
 
ehcache
Overview Ehcache is a pure Java, in-process cache with the following features: Fast Simple Acts as a pluggable cache for Hibernate 2.1. Small foot print. Both in terms of size and memory requirements. Minimal dependencies. Fully documented. S
 
XML Messaging Using JBoss
It\'s common practice to share data using FTP, but an increasingly popular alternative is to use a messaging service. As always, each approach has its own pros and cons, depending on the nature of "what to share," how easy it is to implement the technolog
 
An Introduction to Java Object Persistence with EJB
The 'impedance mismatch' between relational databases' tabular orientation and object-oriented Java's hierarchical one is a perennial problem for which the Java world has several good solution offerings. This article, the first in a three-part series, wil
 
SOFIA 2.3 released with Hibernate and Dynamic HTML components
SOFIA 2.3 released with Hibernate and Dynamic HTML components
 
Simple Object Persistence with the db4o Object Database
Simple Object Persistence with the db4o Object Database. db4o has been chosen for applications in embedded systems in which zero administration, reliability, and low footprint are critical features. In Germany, BMW Car IT, for example, uses it in an embed
 
Hibernate simplifies inheritance mapping.
Learn three easy-to-implement strategies to map class hierarchies. Hibernate is an object-relational mapping and persistence framework that provides a lot of advanced features, ranging from introspection to polymorphism and inheritance mapping.
 
What is Persistence Framework?
What is Persistence Framework? What is Persistence Framework? A persistence framework moves the program data in its most natural form (in memory objects) to and from a permanent data store the database. The persistence framework manages the
 
Open Source Web Frameworks in Java
Open Source Web Frameworks in Java Open Source Web Frameworks in Java Struts Struts Frame work is the implementation of Model-View-Controller (MVC) design pattern for the JSP. Struts is maintained as a part of Apache Jakarta project and is open
 
Using Beans in JSP. A brief introduction to JSP and Java Beans.
Using Beans in JSP. A brief introduction to JSP and Java Beans. USING BEANS IN JSP Java Beans Java Beans are reusable components. They are used to separate Business logic from the Presentation logic. Internally, a bean is just an instance of a
 
Welcome! to the News letter archive
Welcome! to the News letter archive News Letter Archive Date Subject Dec-29-2001 Adding slash " \ " character before quote " ' " in a query
 
Site navigation
 

 

Send your comments, Suggestions or Queries regarding this site at roseindia_net@yahoo.com.

Copyright © 2006. All rights reserved.