Czesz Jakub,
we have actally two projekts using torque and struts.
If you use struts and torque with Apache Tomcat, you have to put the
initialisation into
a class, which will be executet as a servlet during start of tomcat. The
configuration is
in the web.xml file of your application:
<!-- Initialisierung Servlet Configuration -->
<servlet>
<servlet-name>initSystem</servlet-name>
<servlet-class>YourInitClass</servlet-class>
<init-param>
<!-- siehe resource ref unten -->
<param-name>res-ref-name</param-name>
<param-value>jdbc/YOUR_DB</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
...
<resource-ref>
<description>
Resource reference to a factory for java.sql.Connection
instances that may be used for talking to a particular
database that is configured in the server.xml file.
</description>
<res-ref-name>
jdbc/YOUR_DB
</res-ref-name>
<res-type>
javax.sql.DataSource
</res-type>
<res-auth>
Container
</res-auth>
</resource-ref>
The java class YourInitClass looks like this:
public class YourInitClass extends HttpServlet
{
/** Ressource Reference */
private static final String CONFIG_RESREFKEY = "res-ref-name";
private static InitTorque m_TorqueDbcpInitialisation = null;
/**
* initialisieren des Automatisierungstools.
*/
public void init(ServletConfig config) throws ServletException
{
super.init(config);
String jndiRes =
config.getInitParameter(CONFIG_RESREFKEY);
try
{
new InitTorque().initJNDI(jndiRes);
}
catch (TorqueException dbe)
{
throw new ServletException(dbe);
}
}
}
And finally the InitTorque class:
public class InitTorque
{
private static final String TORQUE_PROPERTIES =
"torque.properties";
private static final String TORQUE_KEY = "torque.";
private static final String TORQUE_DS = "torque.dsfactory.";
private static final String J2EE_JNDI_REALM = "java:comp/env/";
public PropertiesConfiguration m_torqueProps = null;
public String m_dbName = null;
/**
* initialisiere ServletContainer Context für JNDI.
*
* @param javaNamingComponent
* @throws TorqueException
*/
public void initJNDI(String javaNamingComponent) throws
TorqueException
{
initResource();
initTorque();
log.debug("end");
}
/**
* initialisiere Ressource für DB Access.
*
* @return PropertiesConfiguration die Standardparameter.
* @throws IOException
*/
private void initResource() throws TorqueException {
InputStream configStream =
this.getClass().getClassLoader().getResourceAsStream(TORQUE_PROPERTIES);
if (configStream == null)
{
throw new TorqueException("DB Initialisierung " +
TORQUE_PROPERTIES + " nicht gefunden.");
}
m_torqueProps = new PropertiesConfiguration();
try
{
m_torqueProps.load(configStream);
Iterator it = m_torqueProps.getKeys();
while (it.hasNext())
{
String key = (String)it.next();
log.info("|- " + key + " = " +
m_torqueProps.getProperty(key).toString());
} // while ends
m_dbName = m_torqueProps.getString(TORQUE_KEY +
"database.default");
if (m_dbName == null)
{
throw new TorqueException("DB
Initialisierung Default DB Name nicht gefunden.");
}
}
catch (ConfigurationException e)
{
throw new TorqueException(e);
}
}
public void shutdown()
{
log.debug("start");
Torque.shutdown();
log.debug("end");
}
/**
* Initialisierung von Torque.
*
* @throws TorqueException
*/
private void initTorque() throws TorqueException {
if (false == Torque.isInit())
{
Torque.init(m_torqueProps);
}
log.debug("end");
}
} // InitTorque
Hope that helps,
Arndt
"Jakub Piechnik" <[EMAIL PROTECTED]>
30.05.2005 22:13
Please respond to "Apache Torque Users List"
To: "Apache Torque Users List" <[email protected]>
cc:
Subject: Torque and Struts
Hi
I was wondering if I could use classes generated by Torque in project that
uses Struts? If so where should I put all torque inicjalization? Can
anyone gives me excample of how to use torque in struts?
Greetings
Jakub Piechnik
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