public Connector getConnector(LockEngine lockEngine, Database database)
throws MappingException, PersistenceException {
if (_connectors.containsKey(lockEngine)) return (Connector) _connectors.get(lockEngine);
try {
if (database.getDriver() != null) {
// JDO configuration file specifies a driver, use the driver
// properties to create a new registry object.
Properties props;
Enumeration params;
Param param;
if (database.getDriver().getClassName() != null) {
try {
Class.forName(database.getDriver().getClassName()).newInstance();
} catch (Exception except) {
throw new MappingException(except);
}
}
if (DriverManager.getDriver(database.getDriver().getUrl()) == null)
throw new MappingException("jdo.missingDriver", database.getDriver().getUrl());
props = new Properties();
params = database.getDriver().enumerateParam();
while (params.hasMoreElements()) {
param = (Param) params.nextElement();
props.put(param.getName(), param.getValue());
}
Connector c = new SQLConnector(database.getName(), database.getDriver().getUrl(), props);
_connectors.put(lockEngine, c);
return c;
} else if (database.getDataSource() != null) {
// JDO configuration file specifies a DataSource object, use the
// DataSource which was configured from the JDO configuration file
// to create a new registry object.
DataSource ds;
ds = (DataSource) database.getDataSource().getParams();
if (ds == null) throw new MappingException("jdo.missingDataSource", database.getName());
Connector c = new SQLConnector(database.getName(), ds);
_connectors.put(lockEngine, c);
return c;
} else if (database.getJndi() != null) {
// JDO configuration file specifies a DataSource lookup through JNDI,
// locate the DataSource object frome the JNDI namespace and use it.
Object ds;
try {
ds = new InitialContext().lookup(database.getJndi().getName());
} catch (NameNotFoundException except) {
throw new MappingException("jdo.jndiNameNotFound", database.getJndi().getName());
} catch (NamingException except) {
throw new MappingException(except);
}
if (!(ds instanceof DataSource))
throw new MappingException("jdo.jndiNameNotFound", database.getJndi().getName());
Connector c = new SQLConnector(database.getName(), (DataSource) ds);
_connectors.put(lockEngine, c);
return c;
} else {
throw new MappingException("jdo.missingDataSource", database.getName());
}
} catch (SQLException e) {
throw new PersistenceException("Exception occurs while obtaining SQL connection", e);
}
}