@Override
    public void deleteVCard(String username) {
        Connection con = null;
        PreparedStatement pstmt = null;
        try {
            con = DbConnectionManager.getConnection();
            pstmt = con.prepareStatement(DELETE_PROPERTIES);
            pstmt.setString(1, username);
            pstmt.executeUpdate();
        }
        catch (SQLException e) {
            Log.error("Error deleting vCard of username: " + username, e);
        }
        finally {
            DbConnectionManager.closeConnection(pstmt, con);
        }
    }
Default implementation of the VCardProvider interface, which reads and writes data
from the {@code ofVCard} database table.

@author Gaston Dombiak
xmppserver/src/main/java/org/jivesoftware/openfire/vcard/DefaultVCardProvider.java