Spring Transaction Management

Spring Framework supports:

• Programmatic transaction management.
• Declarative transaction management.

Programmatic configuration:
-----------------------------------
In this approach Hibernate properties are set in the confguration object through its setProperty() method:


public Configuration setProperty(String propertyName, String propertyValue)

Configuration cfg = new Configuration()
    .setProperty("hibernate.connection.url", "jdbc:hsqldb:hsql://localhost/hiberdb")
    .setProperty("hibernate.dialect", "org.hibernate.dialect.HSQLDialect")
    .setProperty("hibernate.connection.username", "sa")
    .setProperty("hibernate.connection.password", "")
    .setProperty("hibernate.connection.driver_class", "org.hsqldb.jdbcDriver");


Or you create a java.Util.Properties object and pass it to Configuration constructor.


Or public Configuration setProperties(Properties properties);
  
To add resource files or hbm files:

config.addResource("com/packtpub/springhibernate/ch04/Student.hbm.xml");

Declarative configuration:

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In declarative configuration you load hibernate.properties file in classpath with key=value configuration.

Content in properties file will be as following:

#hibernate configuration

hibernate.connection.driver_class=org.hsqldb.jdbcDriver

hibernate.connection.url=jdbc:hsqldb:hsql://localhost/hiberdb

hibernate.connection.username=sa

hibernate.connection.password=

hibernate.pool_size=5

hibernate.show_sql=false

hibernate.dialect= org.hibernate.dialect.HSQLDialect

When using this approach, you need to introduce mapping fles to Hibernate programmatically, like this:

config.addClass(Student.class);

Or using XML file configuration as follwoing:

The following code shows a simple XML confguration fle with  

the basic confguration entries:

<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE hibernate-configuration SYSTEM 

          "http://hibernate.sourceforge.net/hibernate-configuration 

          -3.0.dtd">

<hibernate-configuration>

  <session-factory>

    <!-- Hibernate Properties -->

    <property name="connection.driver_class"> org.hsqldb.jdbcDriver</property>

    <property name="connection.url">jdbc:hsqldb:hsql://localhost/hiberdb</property>

    <property name="connection.username">sa</property>

    <property name="connection.password"> </property>

    <property name="pool_size">5</property>

    <property name="show_sql">false</property>

    <property name="dialect">org.hibernate.dialect.HSQLDialect</property>

    <!-- Mapping files -->

    <mapping resource="com/packtpub/springhibernate/ch04/ 

                                      Student.hbm.xml"/>

    <mapping resource="com/packtpub/springhibernate/ch04/ 

                                      Teacher.hbm.xml"/>

    <mapping resource="com/packtpub/springhibernate/ch04/ 

                                       Course.hbm.xml"/>

  </session-factory>

</hibernate-configuration>