* This class checks to see if there is already a TransactionDomain
* setup and instantiated. If so, it is returned, otherwise one is
* created and initialized using properties obtained from JNDI.
*/
protected TransactionDomain getTransactionDomain() throws NamingException {
TransactionDomain domain = null;
InitialContext initCtx = new InitialContext();
String config = initCtx.lookup("java:comp/env/" +
Constants.TYREX_DOMAIN_CONFIG).toString();
String name = initCtx.lookup("java:comp/env/" +
Constants.TYREX_DOMAIN_NAME).toString();
if (config != null && name != null) {
try {
domain = TransactionDomain.getDomain(name);
} catch(Throwable t) {
// Tyrex throws exceptions if required classes aren't found.
log("Error loading Tyrex TransactionDomain", t);
throw new NamingException
("Exception loading TransactionDomain: " + t.getMessage());
}
if ((domain == null)
|| (domain.getState() == TransactionDomain.TERMINATED)) {
URL configURL = Thread.currentThread().getContextClassLoader()
.getResource(config);
if (configURL == null)
throw new NamingException
("Could not load Tyrex domain config file");
try {
domain =
TransactionDomain.createDomain(configURL.toString());
} catch(DomainConfigurationException dce) {
throw new NamingException
("Could not create TransactionDomain: "
+ dce.getMessage());
}
}
} else {
throw new NamingException
("Specified config file or domain name "
+ "parameters are invalid.");
}
if (domain.getState() == TransactionDomain.READY) {
try {
domain.recover();
} catch( RecoveryException re ) {
throw new NamingException
("Could not activate TransactionDomain: "
+ re.getMessage() );
}