/** Creates a Pooled connection and adds it to the connection pool. */
  private void installConnection() throws EmanagerDatabaseException {
    logger.debug("enter");

    PooledConnection connection;

    try {
      connection = poolDataSource.getPooledConnection();
      connection.addConnectionEventListener(this);
      connection.getConnection().setAutoCommit(false);
      synchronized (connectionPool) {
        connectionPool.add(connection);
        logger.debug("Database connection added.");
      }
    } catch (SQLException ex) {
      logger.fatal("exception caught while obtaining database " + "connection: ex = " + ex);
      SQLException ex1 = ex.getNextException();
      while (ex1 != null) {
        logger.fatal("chained sql exception ex1 = " + ex1);
        SQLException nextEx = ex1.getNextException();
        ex1 = nextEx;
      }
      String logString;
      EmanagerDatabaseException ede;

      logString =
          EmanagerDatabaseStatusCode.DatabaseConnectionFailure.getStatusCodeDescription()
              + ex.getMessage();

      logger.fatal(logString);
      ede =
          new EmanagerDatabaseException(
              EmanagerDatabaseStatusCode.DatabaseConnectionFailure, logString);
      throw ede;
    }
  }
  /**
   * Gets the ConnectionID attribute of the SybaseConnector class
   *
   * @param connection
   * @return The ConnectionID value
   */
  public static long getConnectionID(Connection connection) {
    try {
      Statement stmt = connection.createStatement();
      ResultSet res = stmt.executeQuery("select connection_property('Number')");
      res.next();
      return res.getLong(1);
    } catch (SQLException ex) {
      logger.error("SQL exception retrieving connection ID:" + ex.getMessage());
    }

    return InvalidConnectionId;
  }
  /**
   * Maps attributes of an SQL structured type that are not serialized to a serialized form, using
   * the given type map for custom mapping when appropriate. The following types in the Java
   * programming language are mapped to their serialized forms: <code>Struct</code>, <code>SQLData
   * </code>, <code>Ref</code>, <code>Blob</code>, <code>Clob</code>, and <code>Array</code>.
   *
   * <p>This method is called internally and is not used by an application programmer.
   *
   * @param map a <code>java.util.Map</code> object in which each entry consists of 1) a <code>
   *     String</code> object giving the fully qualified name of a UDT and 2) the <code>Class</code>
   *     object for the <code>SQLData</code> implementation that defines how the UDT is to be mapped
   * @throws SerialException if an error occurs
   */
  private void mapToSerial(Map map) throws SerialException {

    try {

      for (int i = 0; i < attribs.length; i++) {
        if (attribs[i] instanceof Struct) {
          attribs[i] = new SerialStruct((Struct) attribs[i], map);
        } else if (attribs[i] instanceof SQLData) {
          attribs[i] = new SerialStruct((SQLData) attribs[i], map);
        } else if (attribs[i] instanceof Blob) {
          attribs[i] = new SerialBlob((Blob) attribs[i]);
        } else if (attribs[i] instanceof Clob) {
          attribs[i] = new SerialClob((Clob) attribs[i]);
        } else if (attribs[i] instanceof Ref) {
          attribs[i] = new SerialRef((Ref) attribs[i]);
        } else if (attribs[i] instanceof java.sql.Array) {
          attribs[i] = new SerialArray((java.sql.Array) attribs[i], map);
        }
      }

    } catch (SQLException e) {
      throw new SerialException(e.getMessage());
    }
    return;
  }
  /**
   * Constructs a <code>SerialStruct</code> object from the given <code>SQLData</code> object, using
   * the given type map to custom map it to a class in the Java programming language. The type map
   * gives the SQL type and the class to which it is mapped. The <code>SQLData</code> object defines
   * the class to which the SQL type will be mapped.
   *
   * @param in an instance of the <code>SQLData</code> class that defines the mapping of the SQL
   *     structured type to one or more objects in the Java programming language
   * @param map a <code>java.util.Map</code> object in which each entry consists of 1) a <code>
   *     String</code> object giving the fully qualified name of a UDT and 2) the <code>Class</code>
   *     object for the <code>SQLData</code> implementation that defines how the UDT is to be mapped
   * @throws SerialException if an error occurs
   */
  public SerialStruct(SQLData in, Map<String, Class<?>> map) throws SerialException {

    try {

      // set the type name
      SQLTypeName = new String(in.getSQLTypeName());

      Vector tmp = new Vector();
      in.writeSQL(new SQLOutputImpl(tmp, map));
      attribs = tmp.toArray();

    } catch (SQLException e) {
      throw new SerialException(e.getMessage());
    }
  }
Exemple #5
0
 public static Connection getConnect() {
   try {
     /*if (!getConnect) {
     if (!con.isValid(1)) {*/
     String host = "jdbc:mysql://localhost:3306/2761DB";
     String uname = "root";
     String upassword = "******";
     con = DriverManager.getConnection(host, uname, upassword);
     getConnect = true;
     /*}
     }*/
   } catch (SQLException err) {
     System.out.println(err.getMessage());
   }
   return con;
 }
  /**
   * Constructs a <code>SerialStruct</code> object from the given <code>Struct</code> object, using
   * the given <code>java.util.Map</code> object for custom mapping the SQL structured type or any
   * of its attributes that are SQL structured types.
   *
   * @param map a <code>java.util.Map</code> object in which each entry consists of 1) a <code>
   *     String</code> object giving the fully qualified name of a UDT and 2) the <code>Class</code>
   *     object for the <code>SQLData</code> implementation that defines how the UDT is to be mapped
   * @throws SerialException if an error occurs
   * @see java.sql.Struct
   */
  public SerialStruct(Struct in, Map<String, Class<?>> map) throws SerialException {

    try {

      // get the type name
      SQLTypeName = new String(in.getSQLTypeName());
      System.out.println("SQLTypeName: " + SQLTypeName);

      // get the attributes of the struct
      attribs = in.getAttributes(map);

      /*
       * the array may contain further Structs
       * and/or classes that have been mapped,
       * other types that we have to serialize
       */
      mapToSerial(map);

    } catch (SQLException e) {
      throw new SerialException(e.getMessage());
    }
  }
Exemple #7
0
  public static List<Movie> getAllMovies() {
    String query = "SELECT * FROM movie";
    List<Movie> movies = new LinkedList<>();
    try (Connection connection = Config.getConnection(); // step 1
        Statement statement = connection.createStatement(); // step 2
        ResultSet result = statement.executeQuery(query); ) { // step 3 and 4
      while (result.next()) { // step 5
        Movie movie = new Movie();
        // you should be validating the following,
        // this is just an example to get you started
        movie.setName(result.getString(1));
        movie.setYear(result.getDate(2).getYear());
        movie.setUrl(result.getString(3));
        movies.add(movie);
      }
    } catch (SQLException e) {
      System.err.println(e.getMessage());
      System.err.println(e.getStackTrace());
    }

    return movies;
  }
Exemple #8
0
 protected boolean executeOnlyIf(Connection con, String q) throws SQLException {
   if (q == null) return true;
   Statement stmt = null;
   try {
     stmt = con.createStatement();
     q = q.replace("$PREFIX", getPrefix());
     LOG.debug(" Executing query " + q);
     ResultSet rs = stmt.executeQuery(q);
     rs.next();
     boolean res = rs.getBoolean(1);
     LOG.debug("Result: " + res);
     return res;
   } catch (SQLException sqe) {
     LOG.error(sqe.getMessage() + " from " + q);
     throw sqe;
   } finally {
     try {
       if (stmt != null) {
         stmt.close();
       }
     } catch (Exception g) {
     }
   }
 }
  /**
   * @return Connection
   * @roseuid 3F3A5FFD0338
   */
  public Connection getConnection() throws EmanagerDatabaseException {
    long connectionId;
    Connection connection;
    PooledConnection pooledConnection;

    connection = null;
    pooledConnection = null;
    connectionId = InvalidConnectionId;

    try {
      synchronized (connectionPool) {
        if (!connectionPool.isEmpty()) {
          try {
            boolean connectionClosed;

            connectionClosed = false;

            pooledConnection = (PooledConnection) connectionPool.remove(0);
            connection = pooledConnection.getConnection();
            connection.clearWarnings();
            connectionId = getConnectionID(connection);
            connectionClosed = connection.isClosed();
            if (connectionId == InvalidConnectionId || connectionClosed == true) {
              logger.debug("Pooled connection closed.");
              connection = null;
            }
          } catch (SQLException sqe) {
            logger.debug("Pooled connection closed.");
            connection = null;
          }
        }
      }

      if (connection == null) {
        logger.debug("Getting a new connection.");
        pooledConnection = poolDataSource.getPooledConnection();
        pooledConnection.addConnectionEventListener(this);
        connection = pooledConnection.getConnection();
        connection.clearWarnings();
        connectionId = getConnectionID(connection);
      }
    } catch (SQLException sqe) {
      String logString;
      EmanagerDatabaseException ede;

      logString =
          EmanagerDatabaseStatusCode.UnableToGetPooledConnection.getStatusCodeDescription()
              + sqe.getMessage();

      logger.error(logString);
      ede =
          new EmanagerDatabaseException(
              EmanagerDatabaseStatusCode.UnableToGetPooledConnection, logString);
      throw ede;
    }

    if (connectionId == InvalidConnectionId) {
      EmanagerDatabaseException ede;
      ede =
          new EmanagerDatabaseException(
              EmanagerDatabaseStatusCode.UnableToGetPooledConnection,
              EmanagerDatabaseStatusCode.UnableToGetPooledConnection.getStatusCodeDescription());
      throw ede;
    }

    logger.debug(
        "\n*****************************"
            + "\nPooled Connection Init"
            + "\nCon ID:"
            + connectionId
            + "\nCon Object:"
            + pooledConnection
            + "\nPool Object:"
            + connection
            + "\n*****************************");

    return connection;
  }
  /**
   * This method searches the table STAGE_USAC_FORM for the distinctfilename provided for the usac
   * refrence number given
   *
   * @param Stringusac refrence number
   * @return Vector containing the Result Set
   */
  public Vector selectFileName(String rfrnc_nmbr) {
    // the buffer for the query
    StringBuffer sbQuery = null;
    Vector rsVector = new Vector();
    PreparedStatement psStmt = null;
    ResultSet rsResult = null;

    try {
      // init the buffer
      sbQuery = new StringBuffer("");
      // build the query
      sbQuery.append(buildSelectFileName());
      sbQuery.append(" WHERE ");
      sbQuery.append(" rfrnc_nmbr = ?");
      // sbQuery.append( rfrnc_nmbr );
      // sbQuery.append("'");

      USFEnv.getLog()
          .writeDebug(
              "Get FileName by USAC Ref Number  is: " + sbQuery.toString() + "\n", this, null);

      // execute the query
      psStmt = cConn.prepareStatement(sbQuery.toString());
      psStmt.setString(1, rfrnc_nmbr);

      rsResult = psStmt.executeQuery();
      if (rsResult != null) {
        while (rsResult.next()) {
          rsVector.addElement(rsResult.getString("FILENAME"));
          USFEnv.getLog()
              .writeDebug(" THE FILENAME IS : " + rsResult.getString("FILENAME"), this, null);
        }
      }

      if (rsResult != null) rsResult.close();
      if (psStmt != null) psStmt.close();

    } catch (SQLException e) {
      try {
        // close the statment and the ResultSet
        if (rsResult != null) rsResult.close();
        if (psStmt != null) psStmt.close();
      } catch (SQLException ex) {
        USFEnv.getLog()
            .writeCrit("selectSQLCall(): Fail to close result set or prepare statement", this, ex);
      }
      USFEnv.getLog()
          .writeCrit(
              " SQL Exception : SQL Error message "
                  + e.getMessage()
                  + " with Query: \n"
                  + sbQuery.toString(),
              this,
              e);
    } catch (Exception e) {
      try {
        // close the statment and the ResultSet
        if (rsResult != null) rsResult.close();
        if (psStmt != null) psStmt.close();
      } catch (SQLException ex) {
        USFEnv.getLog()
            .writeCrit("selectSQLCall(): Fail to close result set or prepare statement", this, ex);
      }
      USFEnv.getLog()
          .writeCrit(
              "Error Executing the Query(): Error executing query " + e.getMessage(), this, e);
    }

    /* try
      {
             // close the statment and the ResultSet
             if (rsResult != null)
             rsResult.close();
             if (psStmt != null)
             psStmt.close();
      }
      catch (SQLException e)
      {
    USFEnv.getLog().writeCrit("selectSQLCall(): Fail to close result set or prepare statement",this, e);
      }*/

    return rsVector;
  }