bacnet/runtime/bv.h
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Fri, 10 Aug 2018 17:45:33 +0300
changeset 2278 a3ac46366b86
parent 2020 6dddf3070806
permissions -rw-r--r--
Dirty fix for error '_object_has_no_attribute_'getSlave' in EtherCAT extension

traceback:
File "/home/developer/WorkData/PLC/beremiz/beremiz/IDEFrame.py", line 1433, in OnPouSelectedChanged
window.RefreshView()
File "/home/developer/WorkData/PLC/beremiz/beremiz/etherlab/ConfigEditor.py", line 837, in RefreshView
self.RefreshProcessVariables()
File "/home/developer/WorkData/PLC/beremiz/beremiz/etherlab/ConfigEditor.py", line 886, in RefreshProcessVariables
slaves = self.Controler.GetSlaves(**self.CurrentNodesFilter)
File "/home/developer/WorkData/PLC/beremiz/beremiz/etherlab/EthercatMaster.py", line 341, in GetSlaves
for slave in self.Config.getConfig().getSlave():
<type 'exceptions.AttributeError'>:_'lxml.etree._Element'_object_has_no_attribute_'getSlave'

Steps to reproduce problem:

- Add new EtherCAT master
- Add new EthercatNode to the master
- double click on


this is looks like dirty hack to fix strange problem with initial[0]
changing its type after returning from _init_ method to lxml.etree._Element
As a result all methods generated by class factory are lost.

For example, in function initMethod initial[0].__class__ points to
xmlclass.xmlclass.Config. After map(self.append, initial)
self.Config.__class__ is 'xmlclass.xmlclass.Config' as well.
But after returning from initMethod (_init) in CreateElement
self.Config.__class__ has changed to lxml.etree._Element.


I've noticed similar behavior if copy/deepcopy is used for any child
of etree.ElementBase. See simple example below.
[-------------------------------------------------------------]
#!/usr/bin/python

from __future__ import print_function
from lxml import etree
import copy

class DefaultElementClass(etree.ElementBase):
def getLocalTag(self):
return etree.QName(self.tag).localname


def printInformation(x):
print(x, x.__class__, "getLocalTag" in dir(x))


a = DefaultElementClass()
printInformation(a)

#
printInformation(copy.copy(a))
printInformation(copy.deepcopy(a))
[-------------------------------------------------------------]
/**************************************************************************
*
* Copyright (C) 2006 Steve Karg <skarg@users.sourceforge.net>
* Copyright (C) 2017 Mario de Sousa <msousa@fe.up.pt>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*********************************************************************/
#ifndef BV_H
#define BV_H

#include <stdbool.h>
#include <stdint.h>
#include "bacdef.h"
#include "bacerror.h"
#include "rp.h"
#include "wp.h"

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

    typedef struct binary_value_descr {
        /* pointer to IEC 61131-3 located variable that is mapped onto this BACnet object */
        uint8_t *Located_Var_ptr;
        uint32_t Object_Identifier;  /* called object 'Instance' in the source code! */
        char    *Object_Name;   
        char    *Description;
        /* stores the current value */
        /* one entry per priority value */
        BACNET_BINARY_PV Present_Value[BACNET_MAX_PRIORITY];
        /* Writable out-of-service allows others to play with our Present Value */
        /* without changing the physical output */
        bool Out_Of_Service;
    } BINARY_VALUE_DESCR;


    void Binary_Value_Property_Lists(
        const int **pRequired,
        const int **pOptional,
        const int **pProprietary);
    bool Binary_Value_Valid_Instance(
        uint32_t object_instance);
    unsigned Binary_Value_Count(
        void);
    uint32_t Binary_Value_Index_To_Instance(
        unsigned index);
    unsigned Binary_Value_Instance_To_Index(
        uint32_t object_instance);

    bool Binary_Value_Object_Name(
        uint32_t object_instance,
        BACNET_CHARACTER_STRING * object_name);

    char *Binary_Value_Description(
        uint32_t instance);

    BACNET_BINARY_PV Binary_Value_Present_Value(
        uint32_t instance);
    bool Binary_Value_Present_Value_Set(
        uint32_t instance,
        BACNET_BINARY_PV value);

    bool Binary_Value_Out_Of_Service(
        uint32_t instance);
    void Binary_Value_Out_Of_Service_Set(
        uint32_t instance,
        bool value);

    char *Binary_Value_Description(
        uint32_t instance);

    int Binary_Value_Read_Property(
        BACNET_READ_PROPERTY_DATA * rpdata);

    bool Binary_Value_Write_Property(
        BACNET_WRITE_PROPERTY_DATA * wp_data);

    void Binary_Value_Init(
        void);



#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif