//
// Find all the java.sql interfaces implemented by a class and find
// the methods in those interfaces which raise
// SQLFeatureNotSupportedException when called on the passed-in candidate object.
//
private void vetInterfaces(
Object candidate,
Class myClass,
HashSet<String> unsupportedList,
HashSet<String> notUnderstoodList)
throws Exception {
Class superClass = myClass.getSuperclass();
if (superClass != null) {
vetInterfaces(candidate, superClass, unsupportedList, notUnderstoodList);
}
//
// The contract for Class.getInterfaces() states that the interfaces
// come back in a deterministic order, namely, in the order that
// they were declared in the "extends" clause.
//
Class<?>[] interfaces = myClass.getInterfaces();
int interfaceCount = interfaces.length;
for (int i = 0; i < interfaceCount; i++) {
Class<?> iface = interfaces[i];
if (iface.getPackage().getName().equals(SQL_PACKAGE_NAME)) {
vetInterfaceMethods(candidate, iface, unsupportedList, notUnderstoodList);
}
vetInterfaces(candidate, iface, unsupportedList, notUnderstoodList);
}
}
private void initDriverList() {
try {
Thread thread = Thread.currentThread();
ClassLoader loader = thread.getContextClassLoader();
Enumeration iter = loader.getResources("META-INF/services/java.sql.Driver");
while (iter.hasMoreElements()) {
URL url = (URL) iter.nextElement();
ReadStream is = null;
try {
is = Vfs.lookup(url.toString()).openRead();
String filename;
while ((filename = is.readLine()) != null) {
int p = filename.indexOf('#');
if (p >= 0) filename = filename.substring(0, p);
filename = filename.trim();
if (filename.length() == 0) continue;
try {
Class cl = Class.forName(filename, false, loader);
Driver driver = null;
if (Driver.class.isAssignableFrom(cl)) driver = (Driver) cl.newInstance();
if (driver != null) {
log.fine(L.l("DatabaseManager adding driver '{0}'", driver.getClass().getName()));
_driverList.add(driver);
}
} catch (Exception e) {
log.log(Level.FINE, e.toString(), e);
}
}
} catch (Exception e) {
log.log(Level.FINE, e.toString(), e);
} finally {
if (is != null) is.close();
}
}
} catch (Exception e) {
log.log(Level.FINE, e.toString(), e);
}
}
public static void main(String[] args)
throws SQLException, ClassNotFoundException, JSONException {
PostgresDb db = new PostgresDb();
// db.setUrl("jdbc:postgresql://localhost:5432/powaaim");
try {
Class.forName("org.postgresql.Driver");
c = DriverManager.getConnection(db.getUrl(), db.getUser(), db.getPass());
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
st = c.createStatement();
rs = st.executeQuery("SELECT id, name, externalshopid from shop where name='David_3'");
System.out.println("id" + " " + "name" + " " + "externalshopid");
c.close();
obj = new JSONObject();
while (rs.next()) {
int id = rs.getInt("id");
String externaId = rs.getString("externalshopid");
String name = rs.getString("name");
// System.out.println(id+ " " + " "+ name + " " +" "+ externaId);
System.out.println();
obj.put("id", id);
obj.put("name", name);
obj.put("externalshopid", externaId);
System.out.print(obj);
}
}
/**
* Returns a null value compatible with the class. For instance, return <code>Boolean.FALSE</code>
* for primitive booleans, 0 for primitive integers and <code>null</code> for non-primitive types.
*
* @param type a <code>Class</code> value
* @return a null value
*/
private Object getNullValueForType(Class type) {
if (!type.isPrimitive()) {
return null;
}
if (type == Boolean.TYPE) {
return Boolean.FALSE;
}
if (type == Character.TYPE) {
return new Character((char) 0);
}
if (type == Byte.TYPE) {
return new Byte((byte) 0);
}
if (type == Short.TYPE) {
return new Short((short) 0);
}
if (type == Integer.TYPE) {
return new Integer(0);
}
if (type == Long.TYPE) {
return new Long(0L);
}
if (type == Float.TYPE) {
return new Float(0f);
}
if (type == Double.TYPE) {
return new Double(0d);
}
fail("Don't know how to handle type " + type);
return null; // unreachable statement
}
/** Looks up the local database, creating if necessary. */
private DataSource findDatabaseImpl(String url, String driverName) throws SQLException {
try {
synchronized (_databaseMap) {
DBPool db = _databaseMap.get(url);
if (db == null) {
db = new DBPool();
db.setVar(url + "-" + _gId++);
DriverConfig driver = db.createDriver();
ClassLoader loader = Thread.currentThread().getContextClassLoader();
Class driverClass = Class.forName(driverName, false, loader);
driver.setType(driverClass);
driver.setURL(url);
db.init();
_databaseMap.put(url, db);
}
return db;
}
} catch (RuntimeException e) {
throw e;
} catch (SQLException e) {
throw e;
} catch (Exception e) {
throw ConfigException.create(e);
}
}
//
// Initialize the hashtable of methods which are allowed to raise
// SQLFeatureNotSupportedException.
//
private void initializeExcludableMap(HashSet<String> vanishedMethodList) throws Exception {
excludableMap = new Hashtable<Class, HashSet<Method>>();
int count = rawExcludables.length;
for (int i = 0; i < count; i++) {
Exclusions exclusions = rawExcludables[i];
Class<?> iface = exclusions.getInterface();
MD[] mds = exclusions.getExcludedMethods();
int exclusionCount = mds.length;
HashSet<Method> excludedMethodSet = new HashSet<Method>();
for (int j = 0; j < exclusionCount; j++) {
MD md = mds[j];
if (!md.requiredAtThisLevel()) {
continue;
}
//
// If we are strictly enforcing the JDBC standard,
// then expose the mandatory methods which we know Derby
// doesn't implement.
//
if (STRICT_ENFORCEMENT && !md.isOptional()) {
continue;
}
Method method = null;
try {
method = iface.getMethod(md.getMethodName(), md.getArgTypes());
} catch (NoSuchMethodException e) {
}
if (method == null) {
vanishedMethodList.add(
"Method has vanished from SQL interface: " + iface.getName() + "." + md);
}
excludedMethodSet.add(method);
}
excludableMap.put(iface, excludedMethodSet);
}
}
public Connection createConnection() throws Exception {
Connection con;
try {
Class.forName(dbClass);
con = DriverManager.getConnection(dbUrl, dbUser, dbPassword);
} catch (Exception e) {
e.printStackTrace();
throw e;
}
return con;
}
/**
* Establece una conexión con la base de datos, usando el usuario y clave especificados. Si ya hay
* una conexi�n, esta es cerrada.
*
* @param usuario Una cadena con el nombre de usuario
* @param clave Una cadena con la clave
* @return Regresa verdadero (true) si pudo establecer la conexión de lo contrario regresa falso
* (false).
*/
protected boolean conectar(String usuario, String clave) throws Exception {
// Registra el controlador de manera implicita
Class.forName(controlador).newInstance();
// Obtiene la conexión
System.err.println(url + "," + usuario + "," + clave + ":OK!!!");
this.conexión = DriverManager.getConnection(url, usuario, clave);
// Actualiza usuario y clave del middler
this.usuario = usuario;
this.clave = clave;
return this.conexión != null;
} // Fin conectar
/** Set up a pool with a given key. */
public synchronized ConnectionPool addAlias(
String poolKey,
String driverClassName,
String dbURL,
String userName,
String password,
int maxSize,
long expiration)
throws ClassNotFoundException, InstantiationException, IllegalAccessException {
Class.forName(driverClassName).newInstance();
ConnectionPool cp = new ConnectionPool(dbURL, userName, password, maxSize, expiration, debug);
poolMap.put(poolKey, cp);
return cp;
}
//
// Return the methods of an interface in a deterministic
// order. Class.getMethods() does not do us this favor.
//
private Method[] sortMethods(Class iface) throws Exception {
Method[] raw = iface.getMethods();
int count = raw.length;
Method[] cooked = new Method[count];
MethodSortable[] sortables = new MethodSortable[count];
for (int i = 0; i < count; i++) {
sortables[i] = new MethodSortable(raw[i]);
}
Arrays.sort(sortables);
for (int i = 0; i < count; i++) {
cooked[i] = sortables[i].getMethod();
}
return cooked;
}
public CachedRowSet query(String sql, int pageSize, int page) throws Exception {
// 加载驱动
Class.forName(driver);
try (
// 获取数据库连接
Connection conn = DriverManager.getConnection(url, user, pass);
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(sql)) {
// 使用RowSetProvider创建RowSetFactory
RowSetFactory factory = RowSetProvider.newFactory();
// 创建默认的CachedRowSet实例
CachedRowSet cachedRs = factory.createCachedRowSet();
// 设置每页显示pageSize条记录
cachedRs.setPageSize(pageSize);
// 使用ResultSet装填RowSet，设置从第几条记录开始
cachedRs.populate(rs, (page - 1) * pageSize + 1);
return cachedRs;
}
}
public static void createConnectionPool() {
Context context;
try {
context = new InitialContext();
Class.forName("org.firebirdsql.jdbc.FBDriver");
ds = (DataSource) context.lookup("java:comp/env/jdbc/PanelTrackDB");
Connection c = ds.getConnection();
} catch (NamingException e) {
// TODO Auto-generated catch block
errorLogger.error("An Error Occured:", e);
e.printStackTrace();
} catch (ClassNotFoundException e) {
errorLogger.error("An Error Occured:", e);
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
errorLogger.error("An Error Occured:", e);
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String[] args) {
Connection con = null;
Statement stat = null;
String s;
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
// con=DriverManager.getConnection("jdbc:oracle:oci8:@oracle9i","scott","tiger");
//
// con=DriverManager.getConnection("jdbc:oracle:thin:@saraswati:1521:oracle10g","scott","tiger");
con = DriverManager.getConnection("jdbc:oracle:thin:@//localhost:1521/XE", "scott", "tiger");
/*Properties p=new Properties();
p.put("user","scott");
p.put("password","tiger");*/
// Driver d=(Driver)Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
// Connection con=d.connect("jdbc:odbc:oradsn",p);
// Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
// con=DriverManager.getConnection("jdbc:odbc:namadsn","scott","tiger");
System.out.println("The connection is successful.");
} catch (Exception e) {
e.printStackTrace();
}
try {
stat = con.createStatement();
s = "create table student(Rollno int,Name varchar2(50),serName varchar2(50))";
stat.executeUpdate(s);
} catch (SQLException e) {
e.printStackTrace();
}
try {
stat = con.createStatement();
s = "insert into student values(1,'Namrata','Marathe')";
stat.executeUpdate(s);
s = "insert into student values(2,'Arjun','Marathe')";
stat.executeUpdate(s);
s = "insert into student values(3,'Rahul','Marathe')";
stat.executeUpdate(s);
} catch (SQLException e) {
e.printStackTrace();
}
try {
stat.close();
} catch (SQLException e) {
}
System.out.println("create is successful:");
try {
stat = con.createStatement();
s = "select * from student";
ResultSet rset = stat.executeQuery(s);
while (rset.next())
System.out.println(rset.getInt(1) + " " + rset.getString(2) + " " + rset.getString(3));
} catch (SQLException e) {
e.printStackTrace();
}
try {
stat.close();
} catch (SQLException se) {
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
server svr = new server();
response.setContentType("text/html");
HttpSession session = request.getSession(true);
PrintWriter out = response.getWriter();
String email = request.getParameter("email");
String pw1 = request.getParameter("pw1");
String pw2 = request.getParameter("pw2");
String error = null;
String username = session.getAttribute("username").toString();
if (pw1.compareTo(pw2) != 0) {
error = "Passwords do not match";
session.setAttribute("ErrorMessage", error);
response.sendRedirect("home.jsp");
}
try {
Statement st = null;
String strQuery = null;
if ((pw1.length() == 0) && (email.length() == 0)) {
session.setAttribute("ErrorMessage", "Nothing to change!");
response.sendRedirect("home.jsp");
} else if ((pw1.length() != 0) && (email.length() != 0)) {
strQuery =
"UPDATE `twitter2012`.`users` SET `password`='"
+ pw1
+ "', `email_address`='"
+ email
+ "' WHERE `username`='"
+ username
+ "'";
session.setAttribute("email", email);
} else if ((pw1.length() == 0) && (email.length() != 0)) {
strQuery =
"UPDATE `twitter2012`.`users` SET `email_address`='"
+ email
+ "' WHERE `username`='"
+ username
+ "'";
session.setAttribute("email", email);
} else if ((pw1.length() != 0) && (email.length() == 0)) {
strQuery =
"UPDATE `twitter2012`.`users` SET `password`='"
+ pw1
+ "' WHERE `username`='"
+ username
+ "'";
}
Connection dbcon = null;
Class.forName("com.mysql.jdbc.Driver").newInstance();
dbcon = DriverManager.getConnection(svr.getURL(), svr.getUN(), svr.getPW());
st = dbcon.createStatement();
st.executeUpdate(strQuery);
session.setAttribute("ErrorMessage", "Details Changed");
dbcon.close();
session.setAttribute("ErrorMessage", "Details Changed");
response.sendRedirect("home.jsp");
} catch (Exception ex) {
out.println(ex);
}
}
/** @deprecated use or rewrite in terms of ReflectUtils.findProxyConstructor() */
private static Constructor createProxyConstructor(Class intfc) throws NoSuchMethodException {
Class[] proxyInterfaces = new Class[] {intfc};
Class proxyCl =
Proxy.getProxyClass(C3P0PooledConnection.class.getClassLoader(), proxyInterfaces);
return proxyCl.getConstructor(PROXY_CTOR_ARGS);
}
