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package org.apache.naming.factory;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Properties;
import javax.mail.Session;
import javax.naming.Name;
import javax.naming.Context;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.spi.ObjectFactory;
/**
* Factory class that creates a JNDI named JavaMail Session factory,
* which can be used for managing inbound and outbound electronic mail
* messages via JavaMail APIs. All messaging environment properties
* described in the JavaMail Specification may be passed to the Session
* factory; however the following properties are the most commonly used:
*
* -
*
- mail.smtp.host - Hostname for outbound transport
* connections. Defaults to
localhost if not specified.
*
*
* This factory can be configured in a <DefaultContext>
* or <Context> element in your conf/server.xml
* configuration file. An example of factory configuration is:
*
* <Resource name="mail/smtp" auth="CONTAINER"
* type="javax.mail.Session"/>
* <ResourceParams name="mail/smtp">
* <parameter>
* <name>factory</name>
* <value>org.apache.naming.factory.MailSessionFactory</value>
* </parameter>
* <parameter>
* <name>mail.smtp.host</name>
* <value>mail.mycompany.com</value>
* </parameter>
* </ResourceParams>
*
*
* @author Craig R. McClanahan
* @version $Revision: 1.2 $ $Date: 2005/12/08 01:29:07 $
*/
public class MailSessionFactory implements ObjectFactory {
/**
* The Java type for which this factory knows how to create objects.
*/
protected static final String factoryType = "javax.mail.Session";
/**
* Create and return an object instance based on the specified
* characteristics.
*
* @param refObj Reference information containing our parameters, or null
* if there are no parameters
* @param name The name of this object, relative to context, or null
* if there is no name
* @param context The context to which name is relative, or null if name
* is relative to the default initial context
* @param env Environment variables, or null if there are none
*
* @exception Exception if an error occurs during object creation
*/
public Object getObjectInstance(Object refObj, Name name, Context context,
Hashtable env) throws Exception
{
// Return null if we cannot create an object of the requested type
final Reference ref = (Reference) refObj;
if (!ref.getClassName().equals(factoryType))
return (null);
// Create a new Session inside a doPrivileged block, so that JavaMail
// can read its default properties without throwing Security
// exceptions
return AccessController.doPrivileged( new PrivilegedAction() {
public Session run() {
// Create the JavaMail properties we will use
Properties props = new Properties();
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.host", "localhost");
Enumeration attrs = ref.getAll();
while (attrs.hasMoreElements()) {
RefAddr attr = attrs.nextElement();
if ("factory".equals(attr.getType()))
continue;
props.put(attr.getType(), attr.getContent());
}
// Create and return the new Session object
Session session = Session.getInstance(props, null);
return (session);
}
} );
}
}