etherlab/entries_list.xslt
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Fri, 10 Aug 2018 17:45:33 +0300
changeset 2278 a3ac46366b86
parent 2162 43ab74687f45
child 2641 c9deff128c37
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))
[-------------------------------------------------------------]
<xsl:stylesheet xmlns:func="http://exslt.org/functions" xmlns:dyn="http://exslt.org/dynamic" xmlns:str="http://exslt.org/strings" xmlns:math="http://exslt.org/math" xmlns:exsl="http://exslt.org/common" extension-element-prefixes="ns" xmlns:yml="http://fdik.org/yml" xmlns:set="http://exslt.org/sets" version="1.0" xmlns:ns="entries_list_ns" exclude-result-prefixes="ns" xmlns:regexp="http://exslt.org/regular-expressions" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"><xsl:output method="xml"/><xsl:variable name="space" select="'                                                                                                                                                                                                        '"/><xsl:param name="autoindent" select="4"/><xsl:param name="min_index"/><xsl:param name="max_index"/><xsl:template match="text()"><xsl:param name="_indent" select="0"/></xsl:template><xsl:template match="Device"><xsl:param name="_indent" select="0"/><xsl:apply-templates select="Profile/Dictionary/Objects/Object"><xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/></xsl:apply-templates><xsl:for-each select="RxPdo"><xsl:call-template name="pdo_entries"><xsl:with-param name="direction" select="'Receive'"/></xsl:call-template></xsl:for-each><xsl:for-each select="TxPdo"><xsl:call-template name="pdo_entries"><xsl:with-param name="direction" select="'Transmit'"/></xsl:call-template></xsl:for-each></xsl:template><xsl:template match="Object"><xsl:param name="_indent" select="0"/><xsl:variable name="index"><xsl:value-of select="ns:HexDecValue(Index/text())"/></xsl:variable><xsl:variable name="entry_name"><xsl:value-of select="ns:EntryName(Name)"/></xsl:variable><xsl:choose><xsl:when test="$index &gt;= $min_index and $index &lt;= $max_index"><xsl:variable name="datatype_name"><xsl:value-of select="Type/text()"/></xsl:variable><xsl:choose><xsl:when test="ancestor::Dictionary/child::DataTypes/DataType[Name/text()=$datatype_name][SubItem]"><xsl:apply-templates select="ancestor::Dictionary/child::DataTypes/DataType[Name/text()=$datatype_name][SubItem]"><xsl:with-param name="_indent" select="$_indent + (1) * $autoindent"/><xsl:with-param name="index"><xsl:value-of select="$index"/></xsl:with-param><xsl:with-param name="entry_name"><xsl:value-of select="$entry_name"/></xsl:with-param></xsl:apply-templates></xsl:when><xsl:otherwise><xsl:variable name="subindex"><xsl:text>0</xsl:text></xsl:variable><xsl:variable name="entry"><xsl:value-of select="ns:AddEntry($index, $subindex, $entry_name, $datatype_name, BitSize/text(), Flags/Access/text(), Flags/PdoMapping/text())"/></xsl:variable></xsl:otherwise></xsl:choose></xsl:when></xsl:choose></xsl:template><xsl:template match="DataType"><xsl:param name="_indent" select="0"/><xsl:param name="index"/><xsl:param name="entry_name"/><xsl:for-each select="SubItem"><xsl:variable name="subindex"><xsl:value-of select="ns:HexDecValue(SubIdx/text())"/></xsl:variable><xsl:variable name="subentry_name"><xsl:value-of select="$entry_name"/><xsl:text> - </xsl:text><xsl:value-of select="ns:EntryName(DisplayName, Name/text())"/></xsl:variable><xsl:variable name="entry"><xsl:value-of select="ns:AddEntry($index, $subindex, $subentry_name, Type/text(), BitSize/text(), Flags/Access/text(), Flags/PdoMapping/text())"/></xsl:variable></xsl:for-each></xsl:template><xsl:template name="pdo_entries"><xsl:param name="_indent" select="0"/><xsl:param name="direction"/><xsl:variable name="pdo_index"><xsl:value-of select="ns:HexDecValue(Index/text())"/></xsl:variable><xsl:variable name="pdo_name"><xsl:value-of select="ns:EntryName(Name)"/></xsl:variable><xsl:for-each select="Entry"><xsl:variable name="index"><xsl:value-of select="ns:HexDecValue(Index/text())"/></xsl:variable><xsl:choose><xsl:when test="$index &gt;= $min_index and $index &lt;= $max_index"><xsl:variable name="subindex"><xsl:value-of select="ns:HexDecValue(SubIndex/text())"/></xsl:variable><xsl:variable name="subentry_name"><xsl:value-of select="ns:EntryName(Name)"/></xsl:variable><xsl:variable name="access"><xsl:choose><xsl:when test="$direction='Transmit'"><xsl:text>ro</xsl:text></xsl:when><xsl:otherwise><xsl:text>wo</xsl:text></xsl:otherwise></xsl:choose></xsl:variable><xsl:variable name="pdo_mapping"><xsl:choose><xsl:when test="$direction='Transmit'"><xsl:text>T</xsl:text></xsl:when><xsl:otherwise><xsl:text>R</xsl:text></xsl:otherwise></xsl:choose></xsl:variable><xsl:variable name="entry"><xsl:value-of select="ns:AddEntry($index, $subindex, $subentry_name, DataType/text(), BitLen/text(), $access, $pdo_mapping, $pdo_index, $pdo_name, $direction)"/></xsl:variable></xsl:when></xsl:choose></xsl:for-each></xsl:template></xsl:stylesheet>