DevHibernate

Hibernate Configuration

Configuration, Hibernate, JPA

hibernate

Hibernate ORM (Hibernate in short) is an object-relational mapping tool for the Java programming language. It provides a framework for mapping an object-oriented domain model to a relational database. Hibernate handles object-relational impedance mismatch problems by replacing direct, persistent database accesses with high-level object handling functions.

Diagram
hibernate

SessionFactory
Session
Transaction
Query
Criteria

Dependency

Library Description
dom4j Xml Parsing
Xalan XSLT processing
Xerces The Xerces Java Parser
cglib Java Code Generator
log4j Logging
Commons logger, email
SLF4J logging abstract

Properties

Name Description
hibernate.dialet Specify the SQL language
hibernate.connection.driver_class JDBC driver
hibernate.connection.url DB instance JDBC URL
hibernate.connection.username DB username
hibernate.connection.password DB password
hibernate.connection.pool_size The size of the connection pool
hibernate.connection.autocommit Allow JDBC to autocommit

If use JNDI
|Name|Description|
|:-|:-|
|hibernate.connection.datasource|JNDI name in your server env|
|hibernate.jndi.class|InitialContext Class|
|hibernate.jndi.|Java properties in InitialContext|
|hibernate.jndi.url|JNDI URL|

A sample of hibernate.cfg.xml

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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM 
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
   <session-factory>
   <property name="hibernate.dialect">
      org.hibernate.dialect.MySQLDialect
   </property>
   <property name="hibernate.connection.driver_class">
      com.mysql.jdbc.Driver
   </property>

   <!-- Assume test is the database name -->
   <property name="hibernate.connection.url">
      jdbc:mysql://localhost/test
   </property>
   <property name="hibernate.connection.username">
      root
   </property>
   <property name="hibernate.connection.password">
      root123
   </property>

   <!-- List of XML mapping files -->
   <mapping resource="Employee.hbm.xml"/>

</session-factory>
</hibernate-configuration>
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