@WebMethod(operationName = "delete")
public int delete(@WebParam(name = "qid") int qid) {
Connection conn = null;
PreparedStatement ps = null;
int res = -1;
try {
// new com.mysql.jdbc.Driver();
Class.forName("com.mysql.jdbc.Driver").newInstance();
// conn =
// DriverManager.getConnection("jdbc:mysql://localhost:3306/databasename?user=username&password=password");
String connectionUrl = "jdbc:mysql://localhost:3306/stackexchange";
String connectionUser = "******";
String connectionPassword = "";
conn = DriverManager.getConnection(connectionUrl, connectionUser, connectionPassword);
ps = conn.prepareStatement("delete from question where id = ?;");
ps.setInt(1, qid);
ps.executeUpdate();
ps = conn.prepareStatement("delete from uservote where category = 'q' and id = ?;");
ps.setInt(1, qid);
res = ps.executeUpdate();
ps = conn.prepareStatement("select id from Answer where q_id = ?");
ps.setInt(1, qid);
ResultSet rs = ps.executeQuery();
while (rs.next()) {
ps = conn.prepareStatement("delete from uservote where id = ? and category = 'a';");
ps.setInt(1, rs.getInt("id"));
res = ps.executeUpdate();
}
ps = conn.prepareStatement("delete from Answer where q_id = ?;");
ps.setInt(1, qid);
res = ps.executeUpdate();
} catch (ClassNotFoundException
| InstantiationException
| IllegalAccessException
| SQLException e) {
} finally {
try {
if (ps != null) ps.close();
} catch (SQLException e) {
}
try {
if (conn != null) conn.close();
} catch (SQLException e) {
}
}
return res;
}
@WebMethod(operationName = "update")
public int update(
@WebParam(name = "id") int id,
@WebParam(name = "token") String token,
@WebParam(name = "user-agent") String ua,
@WebParam(name = "ip") String ip,
@WebParam(name = "topic") String topic,
@WebParam(name = "content") String content) {
Connection conn = null;
PreparedStatement ps = null;
int res = -1;
InformationToken it = new InformationToken();
String email = it.getEmail(token, ua, ip);
if (it.getStatus() != 200) {
return -1 * it.getStatus();
} else {
try {
// new com.mysql.jdbc.Driver();
Class.forName("com.mysql.jdbc.Driver").newInstance();
// conn =
// DriverManager.getConnection("jdbc:mysql://localhost:3306/databasename?user=username&password=password");
String connectionUrl = "jdbc:mysql://localhost:3306/stackexchange";
String connectionUser = "******";
String connectionPassword = "";
conn = DriverManager.getConnection(connectionUrl, connectionUser, connectionPassword);
ps = conn.prepareStatement("select name from user where email = ?");
ps.setString(1, email);
ResultSet rs = ps.executeQuery();
rs.next();
String name = rs.getString("name");
ps =
conn.prepareStatement(
"update question set name = ?, email = ?, topic = ?, content = ? where id = ?;");
ps.setString(1, name);
ps.setString(2, email);
ps.setString(3, topic);
ps.setString(4, content);
ps.setInt(5, id);
res = ps.executeUpdate();
} catch (ClassNotFoundException
| InstantiationException
| IllegalAccessException
| SQLException e) {
} finally {
try {
if (ps != null) ps.close();
} catch (SQLException e) {
}
try {
if (conn != null) conn.close();
} catch (SQLException e) {
}
}
return res;
}
}
@WebMethod(operationName = "getQuestionById")
@WebResult(name = "Question")
public Question getQuestionById(@WebParam(name = "qid") int qid) throws Exception {
// TODO write your implementation code here:
Question Q = new Question();
Connection conn = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
// new com.mysql.jdbc.Driver();
Class.forName("com.mysql.jdbc.Driver").newInstance();
// conn =
// DriverManager.getConnection("jdbc:mysql://localhost:3306/databasename?user=username&password=password");
String connectionUrl = "jdbc:mysql://localhost:3306/stackexchange";
String connectionUser = "******";
String connectionPassword = "";
conn = DriverManager.getConnection(connectionUrl, connectionUser, connectionPassword);
ps = conn.prepareStatement("select * from question where id = ?");
ps.setInt(1, qid);
rs = ps.executeQuery();
while (rs.next()) {
int id = rs.getInt("id");
String name = rs.getString("name");
String email = rs.getString("email");
String topic = rs.getString("topic");
String content = rs.getString("content");
int vote = rs.getInt("vote");
Q = new Question(id, name, email, topic, content, vote);
}
} catch (ClassNotFoundException
| InstantiationException
| IllegalAccessException
| SQLException e) {
throw e;
} finally {
if (rs != null) rs.close();
if (ps != null) ps.close();
}
return Q;
}
/**
* @param qid
* @return
*/
@WebMethod(operationName = "getVote")
public int getVote(@WebParam(name = "qid") int qid) {
int vote = -1;
Connection conn = null;
PreparedStatement ps = null;
try {
// new com.mysql.jdbc.Driver();
Class.forName("com.mysql.jdbc.Driver").newInstance();
// conn =
// DriverManager.getConnection("jdbc:mysql://localhost:3306/databasename?user=username&password=password");
String connectionUrl = "jdbc:mysql://localhost:3306/stackexchange";
String connectionUser = "******";
String connectionPassword = "";
conn = DriverManager.getConnection(connectionUrl, connectionUser, connectionPassword);
ps = conn.prepareStatement("select vote from question where id = ?");
ps.setInt(1, qid);
ResultSet rs = null;
rs = ps.executeQuery();
rs.next();
vote = rs.getInt("vote");
} catch (ClassNotFoundException
| InstantiationException
| IllegalAccessException
| SQLException e) {
} finally {
try {
if (ps != null) ps.close();
} catch (SQLException e) {
}
try {
if (conn != null) conn.close();
} catch (SQLException e) {
}
}
return vote;
}
@WebMethod(operationName = "getNumAnswer")
public int getNumAnswer(@WebParam(name = "id") int id) {
Connection conn = null;
PreparedStatement ps = null;
ResultSet rs = null;
int res = -1;
try {
// new com.mysql.jdbc.Driver();
Class.forName("com.mysql.jdbc.Driver").newInstance();
// conn =
// DriverManager.getConnection("jdbc:mysql://localhost:3306/databasename?user=username&password=password");
String connectionUrl = "jdbc:mysql://localhost:3306/stackexchange";
String connectionUser = "******";
String connectionPassword = "";
conn = DriverManager.getConnection(connectionUrl, connectionUser, connectionPassword);
ps = conn.prepareStatement("SELECT COUNT(id) AS numAns FROM answer where q_id = ?");
ps.setInt(1, id);
rs = ps.executeQuery();
rs.next();
res = rs.getInt("numAns");
} catch (ClassNotFoundException
| InstantiationException
| IllegalAccessException
| SQLException e) {
} finally {
try {
if (ps != null) ps.close();
} catch (SQLException e) {
}
try {
if (conn != null) conn.close();
} catch (SQLException e) {
}
}
return res;
}
@WebMethod(operationName = "vote")
public int vote(
@WebParam(name = "id") int id,
@WebParam(name = "token") String token,
@WebParam(name = "user-agent") String ua,
@WebParam(name = "ip") String ip,
@WebParam(name = "value") int val) {
Connection conn = null;
PreparedStatement ps = null;
int executeUpdate = -2;
InformationToken it = new InformationToken();
String mail = it.getEmail(token, ua, ip);
if (it.getStatus() != 200) {
return -1 * it.getStatus();
}
try {
// new com.mysql.jdbc.Driver();
Class.forName("com.mysql.jdbc.Driver").newInstance();
// conn =
// DriverManager.getConnection("jdbc:mysql://localhost:3306/databasename?user=username&password=password");
String connectionUrl = "jdbc:mysql://localhost:3306/stackexchange";
String connectionUser = "******";
String connectionPassword = "";
conn = DriverManager.getConnection(connectionUrl, connectionUser, connectionPassword);
ps =
conn.prepareStatement(
"select * from uservote where id_mail = ? and category = 'q' and id = ?");
ps.setString(1, mail);
ps.setInt(2, id);
ResultSet rs1 = ps.executeQuery();
if (rs1.next()) {
return -1;
} else {
ps = conn.prepareStatement("insert into uservote values(?,'q',?)");
ps.setString(1, mail);
ps.setInt(2, id);
ps.executeUpdate();
ps = conn.prepareStatement("select vote from question where id = ?");
ps.setInt(1, id);
ResultSet rs = ps.executeQuery();
rs.next();
int currentVote = rs.getInt("vote");
ps = conn.prepareStatement("update question set vote = ? where id = ?");
ps.setInt(1, currentVote + val);
ps.setInt(2, id);
executeUpdate = ps.executeUpdate();
}
} catch (ClassNotFoundException
| InstantiationException
| IllegalAccessException
| SQLException e) {
return 0;
} finally {
try {
if (ps != null) ps.close();
} catch (SQLException e) {
}
try {
if (conn != null) conn.close();
} catch (SQLException e) {
}
}
return executeUpdate;
}