/**
* Tests the implementation of getCharacterStream(long pos, long length).
*
* @throws Exception
*/
public void testGetCharacterStreamLong() throws Exception {
String str1 = "This is a test String. This is a test String";
Reader r1 = new java.io.StringReader(str1);
PreparedStatement ps = prepareStatement("insert into BLOBCLOB(ID, CLOBDATA) values(?,?)");
int id = BlobClobTestSetup.getID();
ps.setInt(1, id);
ps.setCharacterStream(2, r1);
ps.execute();
ps.close();
Statement st = createStatement();
ResultSet rs = st.executeQuery("select CLOBDATA from " + "BLOBCLOB where ID=" + id);
rs.next();
Clob clob = rs.getClob(1);
Reader r_1 = clob.getCharacterStream(2L, 5L);
String str2 = str1.substring(1, 6);
Reader r_2 = new java.io.StringReader(str2);
assertEquals(r_2, r_1);
rs.close();
st.close();
}
/**
* This method queries the database to get the Invoice Number associated with the passes Invid
*
* @exception SQLException, if query fails
* @author
*/
public long getInvID(String inv_no) {
String query;
long invID = 0;
Statement stmt = null;
ResultSet rs = null;
query = "select inv_id from inv where inv_no=" + inv_no;
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(query);
if (rs.next()) {
invID = rs.getLong(1);
}
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException ex) {
USFEnv.getLog().writeCrit("Dinvview: The Invoice ID not retreived", this, ex);
try {
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException e) {
USFEnv.getLog().writeCrit("Unable to close the resultset/statement", this, e);
}
}
return (invID);
}
/**
* This method queries the database to get the Invoice Number associated with the passes Invid
*
* @exception SQLException, if query fails
* @author
*/
public String getInvno(String invid) {
String query;
String invno = "";
Statement stmt = null;
ResultSet rs = null;
query = "select inv_no from rhcc_inv where rhcc_inv_id=" + invid;
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(query);
if (rs.next()) {
invno = rs.getString(1);
}
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException ex) {
USFEnv.getLog().writeCrit("RhccDinvview: The Invoice Number not retreived", this, ex);
try {
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException e) {
USFEnv.getLog().writeCrit("Unable to close the resultset/statement", this, e);
}
}
return invno;
}
/**
* This method queries the database to get the SPIN associated with the passes Invid
*
* @exception SQLException, if query fails
* @author
*/
public String getSPINname(String invid) {
String query;
String spinnm = "";
Statement stmt = null;
ResultSet rs = null;
// query = "select slc_nm from usw_co,inv where uc_id=uc_id_fk and inv_id="+invid;
query =
"select srv_provr_nm from srv_provr,rhcc_inv where spin = rhcc_inv.spin_fk and rhcc_inv_id="
+ invid;
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(query);
if (rs.next()) {
spinnm = rs.getString(1);
}
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException ex) {
USFEnv.getLog().writeCrit("RhccDinvview: The SPIN Name not retreived", this, ex);
try {
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException e) {
USFEnv.getLog().writeCrit("Unable to close the resultset/statement", this, e);
}
}
return spinnm;
}
/**
* This method queries the database to get the sequence for the BP_ID.
*
* @exception SQLException, if query fails
* @author
*/
public String getBpid() {
String query;
String bpid = "";
Statement stmt = null;
ResultSet rs = null;
query = "select bp_id_seq.nextval from dual ";
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(query);
if (rs.next()) {
bpid = rs.getString(1);
}
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException ex) {
USFEnv.getLog().writeCrit("Dinvjrnl: Sequence Value for BP_ID not Retreived ", this, ex);
try {
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException e) {
USFEnv.getLog().writeCrit("Unable to close the resultset/statement", this, e);
}
}
return bpid;
}
/**
* This method queries the database to validate the passed in FRN for the selected Funding Year
*
* @exception SQLException, if query fails
* @author
*/
public boolean validateFRN(String frn, String year) {
String query;
boolean validfrn = false;
Statement stmt = null;
ResultSet rs = null;
query = "select wo_id from wrk_ordr where wrk_ordr_no='" + frn + "' and yr_fk=" + year;
USFEnv.getLog().writeCrit("RhccDinvview: FRN query " + query, this, null);
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(query);
if (rs.next()) {
validfrn = true;
if (rs != null) rs.close();
if (stmt != null) stmt.close();
return true;
}
} catch (SQLException ex) {
USFEnv.getLog().writeCrit("RhccDinvview: FRN not valid for the Year ", this, ex);
try {
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException e) {
USFEnv.getLog().writeCrit("Unable to close the resultset/statement", this, e);
}
}
return false;
}
/**
* Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
String username = request.getParameter("username");
String password = request.getParameter("password");
Statement stmt;
ResultSet rs;
Connection con = null;
try {
Class.forName("com.mysql.jdbc.Driver");
String connectionUrl = "jdbc:mysql://localhost/myflickr?" + "user=root&password=123456";
con = DriverManager.getConnection(connectionUrl);
if (con != null) {
System.out.println("connected to mysql");
}
} catch (SQLException e) {
System.out.println("SQL Exception: " + e.toString());
} catch (ClassNotFoundException cE) {
System.out.println("Class Not Found Exception: " + cE.toString());
}
try {
stmt = con.createStatement();
System.out.println("SELECT * FROM flickrusers WHERE name='" + username + "'");
rs = stmt.executeQuery("SELECT * FROM flickrusers WHERE name='" + username + "'");
while (rs.next()) {
if (rs.getObject(1).toString().equals(username)) {
out.println("<h1>To username pou epileksate uparxei hdh</h1>");
out.println("<a href=\"project3.html\">parakalw dokimaste kapoio allo.</a>");
stmt.close();
rs.close();
return;
}
}
stmt.close();
rs.close();
stmt = con.createStatement();
if (!stmt.execute("INSERT INTO flickrusers VALUES('" + username + "', '" + password + "')")) {
out.println("<h1>Your registration is completed " + username + "</h1>");
out.println("<a href=\"index.jsp\">go to the login menu</a>");
registerListener.Register(username);
} else {
out.println("<h1>To username pou epileksate uparxei hdh</h1>");
out.println("<a href=\"project3.html\">Register</a>");
}
} catch (SQLException e) {
throw new ServletException("Servlet Could not display records.", e);
}
}
boolean validar(String busqueda, String Tabla, String llave_consulta, String llave_busqueda)
throws IOException, SQLException {
Connection con = null;
ResultSet resultadosConsulta = null;
Statement instruccionSQL = null;
try {
con = DriverManager.getConnection("jdbc:mysql://localhost/rsu_inventario", "root", "inforsu");
// Preparamos la consulta
instruccionSQL = con.createStatement();
resultadosConsulta =
instruccionSQL.executeQuery(
"SELECT "
+ busqueda
+ " FROM "
+ Tabla
+ " WHERE "
+ llave_consulta
+ " = '"
+ llave_busqueda
+ "'");
if (resultadosConsulta
.next()) { // si es valido el primer reg. hay una fila, tons el usuario y su pw existen
con.close();
resultadosConsulta.close();
instruccionSQL.close();
;
return true;
} // usuario validado correctamente
else {
con.close();
resultadosConsulta.close();
instruccionSQL.close();
return false;
} // usuario validado incorrectamente
} catch (Exception e) {
e.printStackTrace();
con.close();
resultadosConsulta.close();
instruccionSQL.close();
return false;
}
}
public void carga_default() {
Connection con = null;
Statement st = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection("jdbc:mysql://localhost/rsu_inventario", "root", pass);
try {
st = con.createStatement();
st.executeUpdate(
"INSERT INTO ADMIN VALUES ('174183767','msX','msx','estudiante','santiago',"
+ "'2130','3030303','30303030','los valdios 3030','*****@*****.**',12345);");
} catch (SQLException s) {
SQL_FORM error = new SQL_FORM();
JOptionPane.showMessageDialog(error, "error al ingresar datos");
// SQL_FORM error = new SQL_FORM();
JOptionPane.showMessageDialog(error, s, "alert", JOptionPane.ERROR_MESSAGE);
} finally {
con.close();
st.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
/* return status codes for account/device */
public static int[] getStatusCodes(String accountID, String deviceID) throws DBException {
/* account-id specified? */
if (StringTools.isBlank(accountID)) {
return new int[0];
}
/* device-id specified? */
if (StringTools.isBlank(deviceID)) {
deviceID = ALL_DEVICES;
}
/* select */
// DBSelect: SELECT statucCode FROM StatusCode WHERE (accountID='acct') AND (deviceID='*') ORDER
// BY statucCode
DBSelect<StatusCode> dsel = new DBSelect<StatusCode>(StatusCode.getFactory());
dsel.setSelectedFields(StatusCode.FLD_statusCode);
DBWhere dwh = dsel.createDBWhere();
dsel.setWhere(
dwh.WHERE_(
dwh.AND(
dwh.EQ(StatusCode.FLD_accountID, accountID),
dwh.EQ(StatusCode.FLD_deviceID, deviceID))));
dsel.setOrderByFields(StatusCode.FLD_statusCode);
/* get list */
java.util.List<Integer> codeList = new Vector<Integer>();
Statement stmt = null;
ResultSet rs = null;
try {
stmt = DBConnection.getDefaultConnection().execute(dsel.toString());
rs = stmt.getResultSet();
while (rs.next()) {
int code = rs.getInt(StatusCode.FLD_statusCode);
codeList.add(new Integer(code));
}
} catch (SQLException sqe) {
throw new DBException("Getting StatusCode List", sqe);
} finally {
if (rs != null) {
try {
rs.close();
} catch (Throwable t) {
}
}
if (stmt != null) {
try {
stmt.close();
} catch (Throwable t) {
}
}
}
/* return array of status codes */
int codeListInt[] = new int[codeList.size()];
for (int i = 0; i < codeListInt.length; i++) {
codeListInt[i] = codeList.get(i).intValue();
}
return codeListInt;
}
//
// Examine BLOBs and CLOBs.
//
private void vetLargeObjects(
Connection conn, HashSet<String> unsupportedList, HashSet<String> notUnderstoodList)
throws Exception {
Statement stmt = conn.createStatement();
stmt.execute("CREATE TABLE t (id INT PRIMARY KEY, " + "b BLOB(10), c CLOB(10))");
stmt.execute(
"INSERT INTO t (id, b, c) VALUES (1, "
+ "CAST ("
+ TestUtil.stringToHexLiteral("101010001101")
+ "AS BLOB(10)), CAST ('hello' AS CLOB(10)))");
ResultSet rs = stmt.executeQuery("SELECT id, b, c FROM t");
rs.next();
Blob blob = rs.getBlob(2);
Clob clob = rs.getClob(3);
vetObject(blob, unsupportedList, notUnderstoodList);
vetObject(clob, unsupportedList, notUnderstoodList);
stmt.close();
conn.rollback();
}
/**
* Test that <code>Clob.getCharacterStream(long,long)</code> works on CLOBs that are streamed from
* store. (DERBY-2891)
*/
public void testGetCharacterStreamLongOnLargeClob() throws Exception {
getConnection().setAutoCommit(false);
// create large (>32k) clob that can be read from store
final int size = 33000;
StringBuilder sb = new StringBuilder(size);
for (int i = 0; i < size; i += 10) {
sb.append("1234567890");
}
final int id = BlobClobTestSetup.getID();
PreparedStatement ps =
prepareStatement("insert into blobclob(id, clobdata) values (?,cast(? as clob))");
ps.setInt(1, id);
ps.setString(2, sb.toString());
ps.executeUpdate();
ps.close();
Statement s = createStatement();
ResultSet rs = s.executeQuery("select clobdata from blobclob where id = " + id);
assertTrue(rs.next());
Clob c = rs.getClob(1);
// request a small region of the clob
BufferedReader r = new BufferedReader(c.getCharacterStream(4L, 3L));
assertEquals("456", r.readLine());
r.close();
c.free();
rs.close();
s.close();
rollback();
}
private static void addCourse(Connection conn, String stu_no) throws SQLException {
String cno = readEntry("Course number : ");
String sno = readEntry("Section number : ");
String course_query =
"SELECT Section_identifier FROM SECTION WHERE Section_identifier="
+ sno
+ " AND Course_number='"
+ cno
+ "' AND Semester='Spring' AND YEAR=TO_DATE('2007','YYYY')";
// System.out.println(course_query);
Statement s1 = conn.createStatement();
ResultSet r1 = s1.executeQuery(course_query);
if (r1.next()) {
String addc =
"INSERT INTO GRADE_REPORT (Student_number, Section_identifier, Grade) VALUES ("
+ stu_no
+ ", "
+ sno
+ ", 'NULL')";
Statement s2 = conn.createStatement();
System.out.println(addc);
try {
s2.executeUpdate(addc);
System.out.println("Enrollment successfull");
} catch (SQLException e) {
System.out.println("Cannot add course into table");
}
} else {
System.out.println("Course not found");
}
s1.close();
}
public String checkValidLogin(String myUserName, String myPW) {
try {
Class.forName(javaSQLDriverPath);
Connection conn =
(Connection) DriverManager.getConnection(ConnectionPath, ConnectionUser, ConnectionPW);
Statement st = conn.createStatement();
String query = "Select * from User";
ResultSet rs = st.executeQuery(query);
while (rs.next()) {
// return rs.getString("Username");
if (myUserName.equals(rs.getString("Username"))) {
if (myPW.equals(rs.getString("Password"))) {
setUserVariables(myUserName);
return "success";
} else {
return "wrongPassword";
}
}
}
rs.close();
st.close();
conn.close();
return "userNotFound";
} catch (Exception e) {
return e.getMessage();
}
}
/**
* Gets a list of courses that belongs to an instructor. Throws InvalidDBRequestException if any
* error occured to the database connection.
*
* @param name the instructor's user name
* @return a vector containing the list of courses
* @throws InvalidDBRequestException
*/
public Vector getCourseList(String name) throws InvalidDBRequestException {
Vector courseList = new Vector();
try {
Connection db;
Class.forName(GaigsServer.DBDRIVER);
db =
DriverManager.getConnection(GaigsServer.DBURL, GaigsServer.DBLOGIN, GaigsServer.DBPASSWD);
Statement stmt = db.createStatement();
ResultSet rs;
// get the course list
rs =
stmt.executeQuery(
"select course_num, course_name from course where instructor = '"
+ name
+ "' order by course_num");
while (rs.next()) courseList.add(rs.getString(1) + " - " + rs.getString(2));
rs.close();
stmt.close();
db.close();
} catch (SQLException e) {
System.err.println("Invalid SQL in getCourseList: " + e.getMessage());
throw new InvalidDBRequestException("???");
} catch (ClassNotFoundException e) {
System.err.println("Driver Not Loaded");
throw new InvalidDBRequestException("Server Error");
}
return courseList;
}
/**
* Remove a student from a particular course. Also Deletes all the quiz vizualisation files in the
* student's directory which relates to the course. Caution: vizualisation file will be deleted
* eventhough it also relates to another course if the student is also registered to that course.
* (FIX ME!) Throws InvalidDBRequestException if the student is not registered in the course,
* error occured during deletion, or other exception occured.
*
* @param username student's user name
* @param courseID course id (course number + instructor name)
* @throws InvalidDBRequestException
*/
public void deleteStudent(String username, String courseID) throws InvalidDBRequestException {
try {
Class.forName(GaigsServer.DBDRIVER);
db =
DriverManager.getConnection(GaigsServer.DBURL, GaigsServer.DBLOGIN, GaigsServer.DBPASSWD);
Statement stmt = db.createStatement();
ResultSet rs;
int count = 0;
// check if student registered to the course
rs =
stmt.executeQuery(
"select * from courseRoster where course_id = '"
+ courseID
+ "' and user_login = '******'");
if (!rs.next())
throw new InvalidDBRequestException("Student is not registered to the course");
// remove student from the course
count =
stmt.executeUpdate(
"delete from courseRoster where course_id = '"
+ courseID
+ "' and user_login = '******'");
if (count != 1) throw new InvalidDBRequestException("Error occured during deletion!");
// delete the quiz visualization files
rs =
stmt.executeQuery(
"select distinct unique_id, s.test_name from scores s, courseTest t "
+ "where s.test_name = t.test_name "
+ "and course_id = '"
+ courseID
+ "' "
+ "and user_login = '******'");
while (rs.next()) {
deleteVisualization(rs.getString(1), username, rs.getString(2));
count =
stmt.executeUpdate("delete from scores where unique_id = " + rs.getString(1).trim());
}
rs.close();
stmt.close();
db.close();
} catch (SQLException e) {
System.err.println("Invalid SQL in addstudent: " + e.getMessage());
throw new InvalidDBRequestException("???");
} catch (ClassNotFoundException e) {
System.err.println("Driver Not Loaded");
throw new InvalidDBRequestException("Internal Server Error");
}
}
/**
* Deletes an instructor from the database. Deletes the instructor's courses by invoking the
* deleteCourse method. Throws InvalidDBRequestException if instructor not in the database or
* other database connection problems.
*
* @see deleteCourse
* @param instructor instructor's user name
* @throws InvalidDBRequestException
*/
public void deleteInstructor(String instructor) throws InvalidDBRequestException {
try {
Class.forName(GaigsServer.DBDRIVER);
db =
DriverManager.getConnection(GaigsServer.DBURL, GaigsServer.DBLOGIN, GaigsServer.DBPASSWD);
Statement stmt = db.createStatement();
int count;
// delete the instructor's courses
ResultSet rs =
stmt.executeQuery(
"select course_num from course where instructor = '" + instructor + "'");
while (rs.next()) deleteCourse(rs.getString(1).trim(), instructor);
// delete the instructor's record
count = stmt.executeUpdate("delete from instructor where login ='******'");
rs.close();
stmt.close();
db.close();
} catch (SQLException e) {
System.err.println("Invalid SQL in addCourse: " + e.getMessage());
throw new InvalidDBRequestException("??? ");
} catch (ClassNotFoundException e) {
System.err.println("Driver Not Loaded");
throw new InvalidDBRequestException("Internal Server Error");
}
}
/**
* Deletes students who are older than a certain number of years and not registered to any course.
*
* @param year students older than year are candidates to be deleted
* @throws InvalidDBRequestException
*/
public void deleteOldStudent(int year) throws InvalidDBRequestException {
try {
Class.forName(GaigsServer.DBDRIVER);
db =
DriverManager.getConnection(GaigsServer.DBURL, GaigsServer.DBLOGIN, GaigsServer.DBPASSWD);
Statement stmt = db.createStatement();
// query all student who have been in the database longer than a number of years and not
// registered to any course
ResultSet rs =
stmt.executeQuery(
"select login, count(course_id) "
+ "from student s left join courseRoster r on login = user_login "
+ "where date_entered < SUBDATE(now(), INTERVAL "
+ new String().valueOf(year).trim()
+ " YEAR) "
+ "group by login, date_entered");
// delete them
while (rs.next()) if (rs.getInt(2) == 0) purgeStudent(rs.getString(1).trim());
rs.close();
stmt.close();
db.close();
} catch (SQLException e) {
System.err.println("Invalid SQL in addCourse: " + e.getMessage());
throw new InvalidDBRequestException("??? ");
} catch (ClassNotFoundException e) {
System.err.println("Driver Not Loaded");
throw new InvalidDBRequestException("Internal Server Error");
}
}
private synchronized void init() throws SQLException {
if (isClosed) return;
// do tables exists?
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(TABLE_NAMES_SELECT_STMT);
ArrayList<String> missingTables = new ArrayList(TABLES.keySet());
while (rs.next()) {
String tableName = rs.getString("name");
missingTables.remove(tableName);
}
for (String missingTable : missingTables) {
try {
Statement createStmt = conn.createStatement();
// System.out.println("Adding table "+ missingTable);
createStmt.executeUpdate(TABLES.get(missingTable));
createStmt.close();
} catch (Exception e) {
System.err.println(e.getClass().getName() + ": " + e.getMessage());
}
}
}
/**
* Check the user's name and password and verify that the user is an instructor. Throws
* InvalidDBRequestException if user is not an instructor, wrong password, or if any error occured
* to the database connection.
*
* @param name user's user name
* @param pass user's password
* @throws InvalidDBRequestException
*/
public void instructorLogin(String name, String pass) throws InvalidDBRequestException {
try {
Connection db;
Class.forName(GaigsServer.DBDRIVER);
db =
DriverManager.getConnection(GaigsServer.DBURL, GaigsServer.DBLOGIN, GaigsServer.DBPASSWD);
Statement stmt = db.createStatement();
ResultSet rs;
// check if instructor
rs = stmt.executeQuery("select password from instructor where login = '******'");
if (!rs.next()) {
if (debug) System.out.println("User not found in the instructor table");
throw new InvalidDBRequestException("Instructor not registered");
}
// check password
if (!rs.getString(1).equals(pass)) {
if (debug) System.out.println("Invalid password for user: "******"Invalid password for user: "******"Invalid SQL in instructor login: "******"???");
} catch (ClassNotFoundException e) {
System.err.println("Driver Not Loaded");
throw new InvalidDBRequestException("Server Error");
}
}
public void dispose() {
try {
stmt.close();
con.close();
} catch (SQLException e) {
}
}
/**
* Delete a student from the database. Also deletes the student's folders. Throws
* InvalidDBRequestException if any error in database connection.
*
* @param username student's user name
* @throws InvalidDBRequestException
*/
private void purgeStudent(String username) throws InvalidDBRequestException {
try {
Class.forName(GaigsServer.DBDRIVER);
db =
DriverManager.getConnection(GaigsServer.DBURL, GaigsServer.DBLOGIN, GaigsServer.DBPASSWD);
Statement stmt = db.createStatement();
int count;
// delete from scores
count = stmt.executeUpdate("delete from scores where user_login = '******'");
// delete from student
count = stmt.executeUpdate("delete from student where login = '******'");
// delete student's folder
File studentDir = new File("./StudentQuizzes/" + username);
if (!(studentDir.delete())) {
System.err.println("Error in deleting folder for student: " + username);
}
stmt.close();
db.close();
} catch (SQLException e) {
System.err.println("Invalid SQL in addCourse: " + e.getMessage());
throw new InvalidDBRequestException("??? ");
} catch (ClassNotFoundException e) {
System.err.println("Driver Not Loaded");
throw new InvalidDBRequestException("Internal Server Error");
}
}
/**
* Query a quiz list from the database. If there is no student user name specified, the list will
* contain all quizzes that are used in the instructor's courses. Otherwise, the list will contain
* all quizzes that the student has taken and from the instructor's courses which the student is
* registered. Throws InvalidDBRequestException if any error occured to the database connection.
*
* @param instructor instructor's user name
* @param student student's user name. Can be empty to get a list of all quizzes in the
* instructor's courses.
* @return a vector containing the list of quizzes
* @throws InvalidDBRequestException
*/
public Vector getQuizList(String instructor, String student) throws InvalidDBRequestException {
Vector list = new Vector();
try {
Connection db;
Class.forName(GaigsServer.DBDRIVER);
db =
DriverManager.getConnection(GaigsServer.DBURL, GaigsServer.DBLOGIN, GaigsServer.DBPASSWD);
Statement stmt = db.createStatement();
ResultSet rs;
if (!student.equals("")) {
// get the list that contains all quizzes that the student has taken and from the
// instructor's courses which the student is registered
rs =
stmt.executeQuery(
"select courseTest.test_name, scores.start_time from scores, courseTest, course "
+ "where courseTest.test_name = scores.test_name "
+ "and courseTest.course_id = course.course_id "
+ "and instructor = '"
+ instructor
+ "' and user_login = '******' "
+ "order by scores.start_time");
while (rs.next()) {
list.add(rs.getString(1) + " <" + rs.getString(2) + ">");
}
} else {
// get the list that contains all quizzes that are used in the instructor's courses
rs =
stmt.executeQuery(
"select test_name from courseTest, course "
+ "where courseTest.course_id = course.course_id "
+ "and instructor = '"
+ instructor
+ "' ");
while (rs.next()) {
list.add(rs.getString(1));
}
}
rs.close();
stmt.close();
db.close();
} catch (SQLException e) {
System.err.println("Invalid SQL in getQuizList: " + e.getMessage());
throw new InvalidDBRequestException("???");
} catch (ClassNotFoundException e) {
System.err.println("Driver Not Loaded");
throw new InvalidDBRequestException("Internal Server Error");
}
return list;
}
/** private method which actually will do all of our work for the sample */
private void executeSample() {
String query = "select anEmployee from staff2";
try {
Statement stmt = _con.createStatement();
;
// Execute the query which will return an Employee object
// We will cast this using the Person interface. Note the
// Person interface class MUST be in your CLASSPATH. You
// Do not need Employee in your CLASSPATH.
ResultSet rs = stmt.executeQuery(query);
output("***Using interface class\n");
while (rs.next()) {
Person aPerson = (Person) rs.getObject(1);
displayMethods(aPerson.getClass());
output(
"The person is: "
+ aPerson.toString()
+ "\nFirst Name= "
+ aPerson.getFirstName()
+ "\nLast Name= "
+ aPerson.getLastName()
+ "\n");
}
// Now execute the same query, but this time we will use
// reflection to access the class. Again, only the interface
// Person is required in the CLASSPATH
rs = stmt.executeQuery(query);
output("***Using reflection\n");
Object theObj = null;
while (rs.next()) {
theObj = rs.getObject(1);
output("The person is: " + theObj.toString() + "\n");
Class theClass = theObj.getClass();
displayMethods(theClass);
Method m1 = theClass.getMethod("toString", new Class[0]);
Method m2 = theClass.getMethod("getFirstName", new Class[0]);
Method m3 = theClass.getMethod("getLastName", new Class[0]);
output(
"The person is: "
+ (Object) m1.invoke(theObj, new Object[0])
+ "\nFirst Name= "
+ (Object) m2.invoke(theObj, new Object[0])
+ "\nLast Name= "
+ (Object) m3.invoke(theObj, new Object[0])
+ "\n");
}
rs.close();
stmt.close();
} catch (SQLException sqe) {
displaySQLEx(sqe);
} catch (Exception e) {
error("Unexpected exception : " + e.toString() + "\n");
e.printStackTrace();
}
}
/**
* Obtains information on a quiz that a student has taken, which includes the student's answer to
* the quiz, a unique id of the instance, number of questions in the quiz, number of questions
* answered correctly, and vizualisation type of the quiz. Throws InvalidDBRequestException if
* cannot find the record of the stuent taking the quiz, quiz is not registered in the database,
* or if any error occured to the database connection.
*
* @param student student's user name
* @param quiz quiz name
* @param startTime the time the student started the quiz
* @return a string tokenizer containing: answer,uniqueID, numQuestions, numCorrect, and
* visualType. It uses "@" as the delimiter.
* @throws InvalidDBRequestException
*/
public StringTokenizer getAnswerAndVisualType(String student, String quiz, String startTime)
throws InvalidDBRequestException {
String answer;
String uniqueID;
String numQuestions;
String numCorrect;
String visualType;
try {
Connection db;
Class.forName(GaigsServer.DBDRIVER);
db =
DriverManager.getConnection(GaigsServer.DBURL, GaigsServer.DBLOGIN, GaigsServer.DBPASSWD);
Statement stmt = db.createStatement();
ResultSet rs;
// get student's answer, unique id, number of questions, and number of questions answered
// correctly
rs =
stmt.executeQuery(
"select transcript, unique_id, num_questions, num_correct from scores "
+ "where test_name = '"
+ quiz
+ "' and user_login = '******' and start_time = '"
+ startTime
+ "'");
if (!rs.next()) throw new InvalidDBRequestException("Student has not taken the quiz");
else {
answer = rs.getString(1).trim();
uniqueID = rs.getString(2).trim();
numQuestions = rs.getString(3).trim();
numCorrect = rs.getString(4).trim();
}
// get quiz vizualisation type
rs = stmt.executeQuery("select visual_type from test where name = '" + quiz + "' ");
if (!rs.next())
throw new InvalidDBRequestException(
"Quiz was not found! Can't retrieve visualization type.");
else {
visualType = rs.getString(1);
}
rs.close();
stmt.close();
db.close();
} catch (SQLException e) {
System.err.println("Invalid SQL in getAnswerAndVisualType: " + e.getMessage());
throw new InvalidDBRequestException("???");
} catch (ClassNotFoundException e) {
System.err.println("Driver Not Loaded");
throw new InvalidDBRequestException("Internal Server Error");
}
return new StringTokenizer(
answer + "@" + uniqueID + "@" + numQuestions + "@" + numCorrect + "@" + visualType, "@");
}
public ExptLocatorTree(Genome g) {
super();
try {
java.sql.Connection c = DatabaseFactory.getConnection(ExptLocator.dbRole);
int species = g.getSpeciesDBID();
int genome = g.getDBID();
Statement s = c.createStatement();
ResultSet rs = null;
rs =
s.executeQuery(
"select e.name, e.version from experiment e, exptToGenome eg where e.active=1 and "
+ "e.id=eg.experiment and eg.genome="
+ genome);
while (rs.next()) {
String name = rs.getString(1);
String version = rs.getString(2);
ChipChipLocator loc = new ChipChipLocator(g, name, version);
this.addElement(loc.getTreeAddr(), loc);
}
rs.close();
rs =
s.executeQuery(
"select ra.name, ra.version from rosettaanalysis ra, rosettaToGenome rg where "
+ "ra.id = rg.analysis and ra.active=1 and rg.genome="
+ genome);
while (rs.next()) {
String name = rs.getString(1);
String version = rs.getString(2);
MSPLocator msp = new MSPLocator(g, name, version);
this.addElement(msp.getTreeAddr(), msp);
}
rs.close();
rs =
s.executeQuery(
"select ra.name, ra.version from bayesanalysis ra, bayesToGenome rg where "
+ "ra.id = rg.analysis and ra.active=1 and rg.genome="
+ genome);
while (rs.next()) {
String name2 = rs.getString(1);
String version2 = rs.getString(2);
ExptLocator loc2 = new BayesLocator(g, name2, version2);
addElement(loc2.getTreeAddr(), loc2);
}
rs.close();
s.close();
DatabaseFactory.freeConnection(c);
} catch (SQLException se) {
se.printStackTrace(System.err);
throw new RuntimeException(se);
} catch (UnknownRoleException e) {
e.printStackTrace();
}
}
public void connectItems(String query)
// PRE: query must be initialized
// POST: Updates the list of Items based on the query.
{
String driver = "org.apache.derby.jdbc.ClientDriver"; // Driver for DB
String url = "jdbc:derby://localhost:1527/ShopDataBase"; // Url for DB
String user = "******"; // Username for db
String pass = "******"; // Password for db
Connection myConnection; // Connection obj to db
Statement stmt; // Statement to execute a result appon
ResultSet results; // A set containing the returned results
int rowcount; // Num objects in the resultSet
int i; // Index for the array
try { // Try connection to db
Class.forName(driver).newInstance(); // Create our db driver
myConnection = DriverManager.getConnection(url, user, pass); // Initalize our connection
stmt =
myConnection.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE); // Create a new statement
results = stmt.executeQuery(query); // Store the results of our query
rowcount = 0;
if (results.last()) // Go to the last result
{
rowcount = results.getRow();
results.beforeFirst();
}
itemsArray = new Item[rowcount];
i = 0;
while (results.next()) // Itterate through the results set
{
itemsArray[i] =
new Item(
results.getInt("item_id"),
results.getString("item_name"),
results.getString("item_type"),
results.getInt("price"),
results.getInt("owner_id"),
results.getString("item_path")); // Creat new Item
i++;
}
results.close(); // Close the ResultSet
stmt.close(); // Close the statement
myConnection.close(); // Close the connection to db
} catch (Exception e) // Cannot connect to db
{
System.err.println(e.toString());
System.err.println("Error, something went horribly wrong in connectItems!");
}
}
public static void main(String args[]) throws SQLException {
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException e) {
System.out.println("Could not load driver");
}
String user, pass;
user = readEntry("userid : ");
pass = readEntry("password: "******"jdbc:oracle:thin:@csoracle.utdallas.edu:1521:student", user, pass);
boolean flag = false;
while (flag == false) {
// Check if student data exists
String stu_no = readEntry("\n\nEnter student number : ");
String query = "SELECT Name FROM STUDENT WHERE Student_number = " + stu_no;
Statement s = conn.createStatement();
ResultSet r = s.executeQuery(query);
if (r.next()) {
System.out.println("Student data found");
} else {
System.out.println("Student not found. Please try again");
}
s.close();
System.out.println(
"\n\n\n\n\n------------------------Enrollment for Spring 2007--------------------------");
System.out.println("1) Add a class");
System.out.println("2) Drop a class");
System.out.println("3) See my schedule");
String ch = readEntry("Enter your choice : ");
switch (ch.charAt(0)) {
case '1':
System.out.println("\n\n--------Add a class--------");
addCourse(conn, stu_no);
break;
case '2':
System.out.println("\n\n--------Drop a class--------");
dropCourse(conn, stu_no);
break;
case '3':
System.out.println("\n\n--------Your Schedule--------");
viewSchedule(conn, stu_no);
break;
default:
flag = true;
}
}
conn.close();
}
private void loadNewDict(String sql) {
Debug.getAppErrLogger().debug("------------------------------------------------load:" + sql);
HashMap htemp = new HashMap();
Statement state = null;
ResultSet rs_dic = null;
try {
if (conn != null) {
conn.close();
conn = null;
}
getConnection();
state = conn.createStatement();
rs_dic = state.executeQuery(sql);
while (rs_dic.next()) {
String text = rs_dic.getString(1);
String value = rs_dic.getString(2);
if (null != text && value != null) {
htemp.put(text.trim(), value.trim());
}
}
hashCache.put(sql, htemp);
rs_dic.close();
state.close();
} catch (Exception e) {
e.printStackTrace();
Debug.getAppErrLogger().error(e);
} finally {
try {
if (rs_dic != null) {
rs_dic.close();
rs_dic = null;
}
if (state != null) {
state.close();
state = null;
}
} catch (Exception e) {
Debug.getAppErrLogger().error("Inside DictCachService::loadNewDict() - 关闭时出错!\n" + e);
}
close();
}
}
/**
* This method queries the database to validate the passed in FRN for the selected Funding Year
* has been invoiced or not
*
* @exception SQLException, if query fails
* @author
*/
public boolean checkFRNinv(String frn, String year) {
String query;
boolean validfrn = false;
Statement stmt = null;
ResultSet rs = null;
USFEnv.getLog().writeCrit("RhccDinvview: FRN Invoiced" + frn, this, null);
USFEnv.getLog().writeCrit("RhccDinvview: FRN Invoiced" + year, this, null);
query = " SELECT DISTINCT rhcc_inv_id_fk ";
query = query + " FROM wrk_ordr, wrk_ordr_dets, wo_det_hsties ";
query = query + " WHERE wo_id = wo_id_fk ";
query = query + " AND wod_id = wod_id_fk ";
query = query + " AND wdh_stat = 'P' ";
query = query + " AND inv_stat = 'I' ";
query = query + " AND wrk_ordr_no ='" + frn + "' ";
query = query + " AND wrk_ordr.yr_fk =" + year;
USFEnv.getLog().writeCrit("RhccDinvview: FRN Invoiced" + query, this, null);
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(query);
USFEnv.getLog().writeCrit("RhccDinvview: FRN Invoiced" + rs.getFetchSize(), this, null);
if (rs.next()) {
USFEnv.getLog()
.writeCrit("RhccDinvview: FRN Invoiced" + rs.getString("rhcc_inv_id_fk"), this, null);
validfrn = true;
if (rs != null) rs.close();
if (stmt != null) stmt.close();
return true;
}
} catch (SQLException ex) {
USFEnv.getLog().writeCrit("RhccDinvview: FRN not Invoiced", this, ex);
try {
if (rs != null) rs.close();
if (stmt != null) stmt.close();
} catch (SQLException e) {
USFEnv.getLog().writeCrit("Unable to close the resultset/statement", this, e);
}
}
return false;
}
