private String readVersionFromManifest(Class<?> api) throws IOException {
String className = api.getSimpleName() + ".class";
URL resource = api.getResource(className);
log.trace("get resource for {} -> {} -> {}", new Object[] {className, pathOf(api), resource});
if (resource == null) return null;
String version = null;
String classPath = resource.toString();
if (classPath.startsWith("jar:"))
version = version(classPath.substring(0, classPath.lastIndexOf("!") + 1));
if (version == null && classPath.endsWith(pathOf(api) + ".class"))
version = version(classPath.substring(0, classPath.length() - pathOf(api).length() - 7));
if (version == null && classPath.contains("/WEB-INF/"))
version = version(classPath.substring(0, classPath.lastIndexOf("/WEB-INF/")));
log.debug("version {} for {} from {}.", version, api, classPath);
return version;
}
/**
* @param <T> the return type
* @param retvalClass the returned value's {@link Class}
* @param jndi the JNDI path to the resource
* @return the resource at the specified {@code jndi} path
*/
private static <T> T lookup(Class<T> retvalClass, String jndi) {
try {
return retvalClass.cast(InitialContext.doLookup(jndi));
} catch (NamingException ex) {
throw new IllegalArgumentException(
"failed to lookup instance of " + retvalClass + " at " + jndi, ex);
}
}
private void updateDB() {
try {
// Class.forName("com.inet.ora.OraDriver");
Class.forName("org.apache.derby.jdbc.ClientDriver");
//// String url = "jdbc:inetora::wrx.india.sun.com:1521:dbsmpl1";
String url = "jdbc:derby://localhost:1527/testdb;create=true;";
java.sql.Connection con = DriverManager.getConnection(url, "dbuser", "dbpassword");
String qry = "update lifecycle_test1 set status=1";
con.createStatement().executeUpdate(qry);
con.close();
} catch (Exception e) {
System.out.println("Error:" + e.getMessage());
}
}
public static Message createMessage(Session session, Class messageClazz) throws JMSException {
if (session == null) {
throw new JMSException("session cannot be null");
}
if (Message.class.isAssignableFrom(messageClazz)) {
throw new JMSException("cannot create message of type: " + messageClazz.getName());
}
if (TextMessage.class.equals(messageClazz)) {
return session.createTextMessage();
} else if (StreamMessage.class.equals(messageClazz)) {
return session.createStreamMessage();
} else if (MapMessage.class.equals(messageClazz)) {
return session.createMapMessage();
} else if (ObjectMessage.class.equals(messageClazz)) {
return session.createObjectMessage();
} else if (BytesMessage.class.equals(messageClazz)) {
return session.createBytesMessage();
} else if (Message.class.equals(messageClazz)) {
return session.createMessage();
} else {
throw new JMSException("cannot create message of type: " + messageClazz.getName());
}
}
public String getVersion(Class<?> api) {
log.trace("getVersion for {}", api);
Package pkg = api.getPackage();
log.trace(" -> {}/{}", pkg.getImplementationVersion(), pkg.getSpecificationVersion());
String version = pkg.getSpecificationVersion();
if (version == null) version = pkg.getImplementationVersion();
if (version == null) {
try {
version = readVersionFromManifest(api);
} catch (IOException e) {
log.error("Could not extract version for " + api, e);
return null;
}
}
return version;
}
private String pathOf(Class<?> api) {
return api.getCanonicalName().replace('.', '/');
}