rattail/appypod-rattail
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Improved SAP interface and added historization of fields.

Browse source
This commit is contained in:
Gaetan Delannay 2009-12-14 20:22:55 +01:00
parent b888f8149b
commit d320a369c9
13 changed files with 362 additions and 182 deletions
Download patch file Download diff file Expand all files Collapse all files

45
shared/sap.py
View file

@ -8,15 +8,21 @@ from appy.gen.utils import sequenceTypes
class SapError(Exception): pass
SAP_MODULE_ERROR = 'Module pysap was not found (you can get it at ' \
'http://pysaprfc.sourceforge.net)'
'http://pysaprfc.sourceforge.net)'
SAP_CONNECT_ERROR = 'Error while connecting to SAP (conn_string: %s). %s'
SAP_FUNCTION_ERROR = 'Error while calling function "%s". %s'
SAP_DISCONNECT_ERROR = 'Error while disconnecting from SAP. %s'
SAP_TABLE_PARAM_ERROR = 'Param "%s" does not correspond to a valid table ' \
'parameter for function "%s".'
'parameter for function "%s".'
SAP_STRUCT_ELEM_NOT_FOUND = 'Structure used by parameter "%s" does not define '\
'an attribute named "%s."'
SAP_STRING_REQUIRED = 'Type mismatch for attribute "%s" used in parameter ' \
'"%s": a string value is expected (SAP type is %s).'
SAP_STRING_OVERFLOW = 'A string value for attribute "%s" used in parameter ' \
'"%s" is too long (SAP type is %s).'
SAP_FUNCTION_NOT_FOUND = 'Function "%s" does not exist.'
SAP_FUNCTION_INFO_ERROR = 'Error while asking information about function ' \
'"%s". %s'
'"%s". %s'
SAP_GROUP_NOT_FOUND = 'Group of functions "%s" does not exist or is empty.'
# Is the pysap module present or not ?
@ -52,6 +58,32 @@ class Sap:
connNoPasswd = params[:params.index('PASSWD')] + 'PASSWD=********'
raise SapError(SAP_CONNECT_ERROR % (connNoPasswd, str(se)))
def createStructure(self, structDef, userData, paramName):
'''Create a struct corresponding to SAP/C structure definition
p_structDef and fills it with dict p_userData.'''
res = structDef()
for name, value in userData.iteritems():
if name not in structDef._sfield_names_:
raise SapError(SAP_STRUCT_ELEM_NOT_FOUND % (paramName, name))
sapType = structDef._sfield_sap_types_[name]
# Check if the value is valid according to the required type
if sapType[0] == 'C':
sType = '%s%d' % (sapType[0], sapType[1])
# "None" value is tolerated.
if value == None: value = ''
if not isinstance(value, basestring):
raise SapError(
SAP_STRING_REQUIRED % (name, paramName, sType))
if len(value) > sapType[1]:
raise SapError(
SAP_STRING_OVERFLOW % (name, paramName, sType))
# Left-fill the string with blanks.
v = value.ljust(sapType[1])
else:
v = value
res[name.lower()] = v
return res
def call(self, functionName, **params):
'''Calls a function on the SAP server.'''
try:
@ -60,8 +92,8 @@ class Sap:
for name, value in params.iteritems():
if type(value) == dict:
# The param corresponds to a SAP/C "struct"
v = self.sap.get_structure(name)()
v.from_dict(value)
v = self.createStructure(
self.sap.get_structure(name),value, name)
elif type(value) in sequenceTypes:
# The param must be a SAP/C "table" (a list of structs)
# Retrieve the name of the struct type related to this
@ -78,8 +110,7 @@ class Sap:
SAP_TABLE_PARAM_ERROR % (name, functionName))
v = self.sap.get_table(tableTypeName)
for dValue in value:
v.append_from_dict(dValue)
#v = v.handle
v.append(self.createStructure(v.struc, dValue, name))
else:
v = value
function[name] = v