Examples of org.apache.derby.iapi.jdbc.EngineConnection

org.apache.derby.iapi.jdbc.EngineConnection
Additional methods the embedded engine exposes on its Connection object implementations. An internal api only, mainly for the network server. Allows consistent interaction between EmbedConnections and BrokeredConnections.

        if (password != null) 
        p.put(Attribute.PASSWORD_ATTR, password);
                
        // Contract between network server and embedded engine
        // is that any connection returned implements EngineConnection.
        EngineConnection conn = (EngineConnection)
            NetworkServerControlImpl.getDriver().connect(Attribute.PROTOCOL
               + shortDbName + attrString, p);
    if (conn != null) {
      conn.setAutoCommit(false);
    }
    setConnection(conn);
  }

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    void makeDummyConnection()
    {
        try {
            // Contract between network server and embedded engine
            // is that any connection returned implements EngineConnection.
            EngineConnection conn = (EngineConnection)
                NetworkServerControlImpl.getDriver().connect(Attribute.PROTOCOL
                    + shortDbName + attrString, new Properties());


            // If we succeeded in getting a connection, well just close it
            if (conn != null) {
                conn.close();
            }
        } catch (SQLException se) {} // Simply do nothing
    }

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    xaDataSource.setDatabaseName(shortDbName);
    appendAttrString(p);
    if (attrString != null)
      xaDataSource.setConnectionAttributes(attrString);
    
    EngineConnection conn = getConnection();
    // If we have no existing connection. this is a brand new XAConnection.
    if (conn == null)
    {
      xaConnection = xaDataSource.getXAConnection(userId,password);
      setXAResource(xaConnection.getXAResource());
    }
    else // this is just a connection reset. Close the logical connection.
    {
      conn.close();
    }
    
    // Get a new logical connection.
        // Contract between network server and embedded engine
        // is that any connection returned implements EngineConnection.
     conn = (EngineConnection) xaConnection.getConnection();
    // Client will always drive the commits so connection should
    // always be autocommit false on the server. DERBY-898/DERBY-899
    conn.setAutoCommit(false);
    setConnection(conn);    
  }

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    // do local work with conn
    // need to create new connection here.
  */
  public EngineConnection getRealConnection() throws SQLException
  {
        EngineConnection rc = super.getRealConnection();
    if (rc != null)
      return rc;


    openRealConnection();

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        if (password != null) 
        p.put(Attribute.PASSWORD_ATTR, password);
                
        // Contract between network server and embedded engine
        // is that any connection returned implements EngineConnection.
        EngineConnection conn = (EngineConnection)
            NetworkServerControlImpl.getDriver().connect(Attribute.PROTOCOL
               + shortDbName + attrString, p);
    if (conn != null) {
      conn.setAutoCommit(false);
    }
    setConnection(conn);
  }

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    void makeDummyConnection()
    {
        try {
            // Contract between network server and embedded engine
            // is that any connection returned implements EngineConnection.
            EngineConnection conn = (EngineConnection)
                NetworkServerControlImpl.getDriver().connect(Attribute.PROTOCOL
                    + shortDbName + attrString, new Properties());


            // If we succeeded in getting a connection, well just close it
            if (conn != null) {
                conn.close();
            }
        } catch (SQLException se) {} // Simply do nothing
    }

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   */
  private PreparedStatement prepareStatementJDBC3(String sqlStmt, int
                          scrollType, int concurType,
                          int withHoldCursor) throws SQLException
  {
        EngineConnection conn = database.getConnection();
        if (withHoldCursor == -1) {
            // Holdability not explictly set, let the
            // connection provide the default.
            return conn.prepareStatement(sqlStmt,
                    scrollType, concurType);
        }
        
        // Holdability explictly set. 
        return conn.prepareStatement(sqlStmt,
                scrollType, concurType, withHoldCursor);
  }

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    xaDataSource.setDatabaseName(shortDbName);
    appendAttrString(p);
    if (attrString != null)
      xaDataSource.setConnectionAttributes(attrString);
    
    EngineConnection conn = getConnection();
    // If we have no existing connection. this is a brand new XAConnection.
    if (conn == null)
    {
      xaConnection = xaDataSource.getXAConnection(userId,password);
      setXAResource(xaConnection.getXAResource());
    }
    else // this is just a connection reset. Close the logical connection.
    {
      conn.close();
    }
    
    // Get a new logical connection.
        // Contract between network server and embedded engine
        // is that any connection returned implements EngineConnection.
     conn = (EngineConnection) xaConnection.getConnection();
    // Client will always drive the commits so connection should
    // always be autocommit false on the server. DERBY-898/DERBY-899
    conn.setAutoCommit(false);
    setConnection(conn);    
  }

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   */
  private PreparedStatement prepareStatementJDBC3(String sqlStmt, int
                          scrollType, int concurType,
                          int withHoldCursor) throws SQLException
  {
        EngineConnection conn = database.getConnection();
        if (withHoldCursor == -1) {
            // Holdability not explictly set, let the
            // connection provide the default.
            return conn.prepareStatement(sqlStmt,
                    scrollType, concurType);
        }
        
        // Holdability explictly set. 
        return conn.prepareStatement(sqlStmt,
                scrollType, concurType, withHoldCursor);
  }

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    // do local work with conn
    // need to create new connection here.
  */
  public EngineConnection getRealConnection() throws SQLException
  {
        EngineConnection rc = super.getRealConnection();
    if (rc != null)
      return rc;


    openRealConnection();

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Related Classes of org.apache.derby.iapi.jdbc.EngineConnection

org.apache.derby.impl.drda.Database

org.apache.derby.impl.drda.DRDAStatement

org.apache.derby.impl.drda.XADatabase

org.apache.derby.jdbc.EmbedXAConnection

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