/** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
/* Check Login Status */
request
.getRequestDispatcher(
"/components/CLS?user_type=faculty&firstTime=true&returnType=redirect")
.include(request, response);
if (response.isCommitted()) return; // CLS preempting
/* Get Connection */
HttpSession session = request.getSession();
Connection conn = null;
synchronized (session) {
DBConnector dbcon = (DBConnector) session.getAttribute("dbcon"); // fetch
if (dbcon == null) {
dbcon = new DBConnector();
session.setAttribute("dbcon", dbcon);
}
conn = dbcon.getConnection();
}
String query =
"select B.class_id, "
+ "xmlserialize(content xmlelement (name \"day\", "
+ " xmlattributes(A.d_id as \"d_id\"), "
+ " xmlagg(xmlelement(name \"slot\", "
+ " xmlattributes(A.no as \"no\"), "
+ " xmlelement(name \"subject_name\", su.name), "
+ " xmlelement(name \"teacher_name\", na.fname||' '|| na.mname||' '||na.lname), "
+ " xmlelement(name \"infra_name\", in.name) ))) as clob) "
+ "from pietons.faculty fa, "
+ "xmltable('$c/personal_details' passing fa.personal_details as \"c\" "
+ "columns fname varchar(20) path './name/fname', "
+ " mname varchar(20) path './name/mname', "
+ " lname varchar(20) path './name/lname') as na, "
+ "pietons.subject su, pietons.infrastructure in, pietons.allocation B, "
+ "xmltable ('$d/schedule/day/slot' passing B.schedule as \"d\" "
+ "columns d_id varchar(2) path '../@d_id', "
+ " subject_id int path './subject_id', "
+ " no varchar(2) path './@no', "
+ " teacher_id varchar(10) path './teacher_id', "
+ " infra_id int path './infra_id') as A "
+ "where A.teacher_id = fa.gr_no and A.subject_id = su.id and A.infra_id=in.id and fa.gr_no=?"
+ "group by B.class_id, A.d_id";
PreparedStatement ps = null;
try {
ps = conn.prepareStatement(query);
ps.setString(1, session.getAttribute("user_id").toString());
ResultSet rs = ps.executeQuery();
PrintWriter out = response.getWriter();
out.println(
"<?xml version=\"1.0\" encoding=\"UTF-8\" ?>"
+ "<?xml-stylesheet type=\"text/xsl\" href=\"/ITEA/components/tt.xsl\" ?>"
+ "<schedule>");
while (rs.next()) out.println(rs.getString(2));
out.println("</schedule>");
} catch (SQLException e) {
System.err.println(e.toString());
}
}
/** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
/* Check Login Status */
request
.getRequestDispatcher("/components/CLS?user_type=admin&returnType=redirect")
.include(request, response);
if (response.isCommitted()) return; // CLS preempting
/* Get connection */
HttpSession session = request.getSession();
Connection conn = null;
synchronized (session) {
DBConnector dbcon = (DBConnector) session.getAttribute("dbcon"); // fetch
// an
// existing
// instance
if (dbcon == null) { // if none found, create a new one
dbcon = new DBConnector();
session.setAttribute("dbcon", dbcon);
}
conn = dbcon.getConnection();
}
// Determine if ajax or ordinary hyperlink
if (request.getParameter("ajax") == null || request.getParameter("ajax").equals("")) {
doPost(request, response);
return;
} else if (request.getParameter("do") != null && request.getParameter("do").equals("delete")) {
/* Delete a Record */
String query = "update pietons.subject set valid=? where id=?";
try {
PreparedStatement ps = conn.prepareStatement(query);
ps.setInt(1, 0);
ps.setString(2, request.getParameter("id"));
ps.execute();
return;
} catch (SQLException e) {
// TODO Auto-generated catch block
System.out.println(e.toString());
request
.getRequestDispatcher(response.encodeURL("/components/error.jsp?type=database"))
.forward(request, response);
return;
}
} else if (request.getParameter("do") != null && request.getParameter("do").equals("restore")) {
/* Restore a Record */
String query = "update pietons.subject set valid=? where id=?";
try {
PreparedStatement ps = conn.prepareStatement(query);
ps.setInt(1, 1);
ps.setString(2, request.getParameter("id"));
ps.execute();
return;
} catch (SQLException e) {
// TODO Auto-generated catch block
System.out.println(e.toString());
request
.getRequestDispatcher(response.encodeURL("/components/error.jsp?type=database"))
.forward(request, response);
return;
}
} else if (request.getParameter("do") != null && request.getParameter("do").equals("edit")) {
/* Edit a Record */
String field = request.getParameter("field");
int subject_id = Integer.parseInt(request.getParameter("subject_id"));
String newContent = request.getParameter("newContent");
if (field.equals("labs_available")) {
String labs_available = "<labs_available>";
StringTokenizer st = new StringTokenizer(newContent, ",");
while (st.hasMoreTokens()) {
labs_available += "<lab id=\"" + Integer.parseInt(st.nextToken()) + "\"/>";
}
labs_available += "</labs_available>";
newContent = labs_available;
}
String query = "update pietons.subject set " + field + "=? where id=?";
PreparedStatement ps;
try {
ps = conn.prepareStatement(query);
ps.setString(1, newContent);
ps.setInt(2, subject_id);
ps.execute();
return;
} catch (SQLException e) {
// TODO Auto-generated catch block
System.out.println(e.toString());
request
.getRequestDispatcher(response.encodeURL("/components/error.jsp?type=form"))
.forward(request, response);
return;
}
} else if (request.getParameter("list") != null
&& request.getParameter("list").equals("course")) {
request.getRequestDispatcher("/components/CourseList").forward(request, response);
} else if (request.getParameter("list") != null
&& request.getParameter("list").equals("branch")) {
request
.getRequestDispatcher(
"/components/BranchList?course_id=" + request.getParameter("course_id"))
.forward(request, response);
} else if (request.getParameter("list") != null
&& request.getParameter("list").equals("class")) {
request
.getRequestDispatcher(
"/components/ClassList?branch_id=" + request.getParameter("branch_id"))
.forward(request, response);
}
}
/** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
/* Check Login Status */
request
.getRequestDispatcher("/components/CLS?user_type=admin&returnType=redirect")
.include(request, response);
if (response.isCommitted()) return; // CLS preempting
/* Get connection */
HttpSession session = request.getSession();
Connection conn = null;
synchronized (session) {
DBConnector dbcon = (DBConnector) session.getAttribute("dbcon"); // fetch
// an
// existing
// instance
if (dbcon == null) { // if none found, create a new one
dbcon = new DBConnector();
session.setAttribute("dbcon", dbcon);
}
conn = dbcon.getConnection();
}
if (request.getParameter("do") != null && request.getParameter("do").equals("add")) {
/* Add New Subject */
request
.getRequestDispatcher(response.encodeURL("/admin/subjectRecords.jsp?do=add"))
.forward(request, response);
return;
} else if (request.getParameter("do") != null && request.getParameter("do").equals("save")) {
/* Save New Record */
String query = "insert into pietons.subject(class_id, name) values(?,?)";
try {
PreparedStatement ps = conn.prepareStatement(query);
ps.setInt(1, Integer.parseInt(request.getParameter("class_id")));
ps.setString(2, request.getParameter("name"));
ps.execute();
request
.getRequestDispatcher(response.encodeURL("/admin/subjectRecords.jsp?do=save"))
.forward(request, response);
} catch (SQLException e) {
// TODO Auto-generated catch block
System.out.println(e.toString());
request
.getRequestDispatcher(response.encodeURL("/components/error.jsp?type=form"))
.forward(request, response);
return;
}
return;
}
/* Show list of subjects */
if (request.getParameter("start") == null
|| request.getParameter("start").equals("")
|| request.getParameter("perpage") == null
|| request.getParameter("perpage").equals("")) {
response.sendRedirect(response.encodeURL("/ITEA/admin/SubjectRecords?start=0&perpage=10"));
return;
}
/* Extract List of Classes */
String order_by = "";
if (request.getParameter("order_by") != null) {
order_by = request.getParameter("order_by");
} else order_by = "id";
String query =
"select id, class_id, name, lectures_held, valid"
+ " from pietons.subject order by "
+ order_by;
Statement st;
int noOfRows = 0;
try {
st = conn.createStatement();
/* Find No. of Records */
ResultSet rschk = st.executeQuery(query);
while (rschk.next()) {
noOfRows++;
}
/* Instantiate noOfRows Number of SubjectBean Objects */
SubjectBean[] sb = new SubjectBean[noOfRows];
ResultSet rs = st.executeQuery(query);
for (int i = 0; i < noOfRows; i++) {
rs.next();
sb[i] = new SubjectBean();
sb[i].setId(rs.getInt("id"));
sb[i].setClass_id(rs.getInt("class_id"));
sb[i].setName(rs.getString("name"));
sb[i].setLectures_held(rs.getInt("lectures_held"));
sb[i].setValid(rs.getInt("valid"));
}
request.setAttribute("sb", sb);
request.setAttribute("sb_no", noOfRows);
request.setAttribute("perpage", Integer.parseInt(request.getParameter("perpage").toString()));
request.setAttribute("start", Integer.parseInt(request.getParameter("start").toString()));
request
.getRequestDispatcher(response.encodeURL("/admin/subjectRecords.jsp"))
.forward(request, response);
} catch (SQLException e) {
// TODO Auto-generated catch block
System.out.println(e.toString());
request
.getRequestDispatcher(response.encodeURL("/components/error.jsp?type=database"))
.forward(request, response);
return;
}
}
