public static boolean checkByEmail(String email) {
boolean valid = true;
try {
conn = RDSManagement.getConnection();
st = (Statement) conn.createStatement();
String sql = "select * from User where email = '" + email + "';";
System.out.println(sql);
ResultSet rs = st.executeQuery(sql);
if (rs.next()) {
valid = false;
}
} catch (SQLException e) {
System.out.println(e.getMessage());
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
try {
st.close();
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return valid;
}
public static boolean checkByUsername(String userName) {
boolean valid = true;
try {
conn = RDSManagement.getConnection();
st = (Statement) conn.createStatement();
String sql = "select * from User where userName = '******';";
System.out.println(sql);
ResultSet rs = st.executeQuery(sql);
if (rs.next()) {
valid = false;
}
// return user;
} catch (SQLException e) {
System.out.println(e.getMessage());
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
try {
st.close();
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return valid;
}
public static User getUserByUsername(String userName) {
User user = null;
try {
conn = RDSManagement.getConnection();
st = (Statement) conn.createStatement();
String sql = "select * from User where userName = '******';";
System.out.println(sql);
ResultSet rs = st.executeQuery(sql);
if (rs.next()) {
user = constructUserFromResultSet(rs);
}
// return user;
} catch (SQLException e) {
System.out.println(e.getMessage());
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
try {
st.close();
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return user;
}
public static int getMaxUserID() {
User user = null;
int maxId = 0;
try {
conn = RDSManagement.getConnection();
st = (Statement) conn.createStatement();
String sql = "SELECT MAX(uid) maxid FROM User;";
System.out.println(sql);
ResultSet rs = st.executeQuery(sql);
if (rs.next()) {
maxId = rs.getInt("maxid");
}
// return user;
} catch (SQLException e) {
System.out.println(e.getMessage());
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
try {
st.close();
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return maxId;
}
public static int updateOneUser(User user) {
int uid = user.getUid();
String userName = user.getUserName();
String email = user.getEmail();
String password = user.getPassword();
try {
conn = RDSManagement.getConnection();
st = (Statement) conn.createStatement();
String sql =
"update User set email ='"
+ email
+ "', password ='******' where uid = "
+ uid
+ ";";
System.out.println(sql);
st.executeUpdate(sql);
System.out.println("Update user: " + uid);
} catch (SQLException e) {
System.out.println(e.getMessage());
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
try {
st.close();
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return uid;
}
public static int insertOneUser(User user) {
int uid = getMaxUserID() + 1;
String userName = user.getUserName();
String email = user.getEmail();
String password = user.getPassword();
try {
conn = RDSManagement.getConnection();
st = (Statement) conn.createStatement();
String sql =
"insert into User values("
+ uid
+ ",'"
+ userName
+ "', '"
+ email
+ "','"
+ password
+ "');";
System.out.println(sql);
int count = st.executeUpdate(sql);
System.out.println("Inserted " + count + " items into Event");
} catch (SQLException e) {
System.out.println(e.getMessage());
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
try {
st.close();
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return uid;
}