How to set JNDI in Hibernate?

How to set JNDI in Hibernate?

Configuration for Tomcat and Jboss is almost same.

I did check in both it is working.

Set the following in Hibernate.hbm and then set the datasource in jndi config file.


<?xml version=’1.0′ encoding=’utf-8′?>
<!DOCTYPE hibernate-configuration PUBLIC
“-//Hibernate/Hibernate Configuration DTD//EN”
“http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd”>

<hibernate-configuration>
<!– a SessionFactory instance listed as /jndi/name –>
<session-factory
name=”java:hibernate/SessionFactory”>

<!– properties –>
<property name=”connection.datasource”>java:/comp/env/jdbc/MyDB</property>
<property name=”dialect”>org.hibernate.dialect.SCJASQLDialect</property>
<property name=”show_sql”>true</property>
<property name=”transaction.factory_class”>
org.hibernate.transaction.JTATransactionFactory
</property>
<property name=”jta.UserTransaction”>java:comp/UserTransaction</property>

<!– mapping files –>

<!– cache settings –>

</session-factory>

</hibernate-configuration>

server.xml configuration

Configure the JNDI DataSource in Tomcat by adding a declaration for your resource to $CATALINA_HOME/conf/server.xml.

Add this in between the </Context> tag of the examples context and the </Host> tag closing the localhost definition.

<Context path="/DBTest" docBase="DBTest"
        debug="5" reloadable="true" crossContext="true">
 
  <Logger className="org.apache.catalina.logger.FileLogger"
             prefix="localhost_DBTest_log." suffix=".txt"
             timestamp="true"/>
 
  <Resource name="jdbc/MyDB"
               auth="Container"
               type="javax.sql.DataSource"/>
 
  <ResourceParams name="jdbc/MyDB">
    <parameter>
      <name>factory</name>
      <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
    </parameter>
 
    <!-- Maximum number of dB connections in pool. Make sure you
         configure your mysqld max_connections large enough to handle
         all of your db connections. Set to 0 for no limit.
         -->
    <parameter>
      <name>maxActive</name>
      <value>100</value>
    </parameter>
 
    <!-- Maximum number of idle dB connections to retain in pool.
         Set to 0 for no limit.
         -->
    <parameter>
      <name>maxIdle</name>
      <value>30</value>
    </parameter>
 
    <!-- Maximum time to wait for a dB connection to become available
         in ms, in this example 10 seconds. An Exception is thrown if
         this timeout is exceeded.  Set to -1 to wait indefinitely.
         -->
    <parameter>
      <name>maxWait</name>
      <value>10000</value>
    </parameter>
 
    <!-- MySQL dB username and password for dB connections  -->
    <parameter>
     <name>username</name>
     <value>javauser</value>
    </parameter>
    <parameter>
     <name>password</name>
     <value>javadude</value>
    </parameter>
 
    <!-- Class name for mm.mysql JDBC driver -->
    <parameter>
       <name>driverClassName</name>
       <value>org.gjt.mm.mysql.Driver</value>
    </parameter>
 
    <!-- The JDBC connection url for connecting to your MySQL dB.
         The autoReconnect=true argument to the url makes sure that the
         mm.mysql JDBC Driver will automatically reconnect if mysqld closed the
         connection.  mysqld by default closes idle connections after 8 hours.
         -->
    <parameter>
      <name>url</name>
      <value>jdbc:mysql://localhost:3306/javatest?autoReconnect=true</value>
    </parameter>
  </ResourceParams>
</Context>