Exemplo n.º 1
0
 /** Loads a CSV file into a table */
 public void loadCSV(String table, File input, boolean clearTable, char separator)
     throws IOException, SQLException {
   if (clearTable) executeUpdate("DELETE FROM " + table);
   ResultSet r = query(limit("SELECT * FROM " + table, 1));
   int[] types = new int[r.getMetaData().getColumnCount()];
   for (int i = 0; i < types.length; i++) types[i] = r.getMetaData().getColumnType(i + 1);
   close(r);
   Inserter bulki = newInserter(table, types);
   boolean start = true;
   for (List<String> values : new CSVLines(input)) {
     if (start) {
       if (values.size() != types.length) {
         throw new SQLException(
             "File "
                 + input.getName()
                 + " has "
                 + values.size()
                 + " columns, but table "
                 + table
                 + " has "
                 + types.length);
       }
       start = false;
       continue;
     }
     if (values.size() != types.length) {
       Announce.warning(
           "Line cannot be read from file", input.getName(), "into table", table, ":\n", values);
       continue;
     }
     bulki.insert((Object[]) values.toArray());
   }
   bulki.close();
 }
Exemplo n.º 2
0
 /** Runs a user-interface and closes */
 public void runInterface() {
   Announce.message("Connected to", this);
   while (true) {
     D.p(
         "Enter an SQL query (possibly of multiple lines), followed by a blank line (or just a blank line to quit):");
     StringBuilder sql = new StringBuilder();
     String s;
     while ((s = D.r()).length() != 0) sql.append(s).append("\n");
     if (sql.length() == 0) break;
     sql.setLength(sql.length() - 1);
     Announce.doing("Querying database");
     if (sql.length() == 0) break;
     try {
       ResultSet result = query(sql.toString());
       Announce.done();
       if (result != null) D.p(describe(result, 50));
     } catch (SQLException e) {
       Announce.failed();
       e.printStackTrace(System.err);
       Announce.message("\n\n... but don't give up, try again!");
     }
   }
   Announce.doing("Closing database");
   close();
   Announce.done();
 }