Hi, PythonCaller might be available. # Startup # declare a global variable and set default value myParam = 'default value' # PythonCaller # modify value in the function def modifyMyParam(feature): global myParam myParam = 'modified value' # Shutdown # refer the global variable print myParam
takashi's approach is a good one - but in fact you don't need to declare the variable in a start-up script. Here is a workspace example where we set the count attribute with a PythonCaller and get it in a Shutdown script:
https://dl.dropbox.com/u/2377887/GetCounter.fmw
Hello Ken, Thanks your supplements. If saying a little more strictly, when the following conditions are satisfied, it's sure that declaration of the global variable in startup script is not essential. - Default value of the variable is unnecessary. - It's guaranteed that the function in which the global variable was declared is called at least 1 time when running the workspace.
Apparently the workspace link I posted above is broken. Below is the code you can use to make an attribute value accessible in a Shutdown script. (Note: you can use the same method to make a Parameter Value accessible by using a ParameterFetcher transformer first to convert your parmater value into an attribute value)
Assuming you have an attribute called
_count
1. PythonCaller Tranformer
- Set the parameter "Class or Function " to processFeature
- Then enter this script
import fmeobjects
def processFeature(feature):
global MyCounter
MyCounter = feature.getAttribute('_count')
pass
2. In your Shutodown Script
import fmeobjects
MyCounter = str(MyCounter)
print MyCounter
I need some suggestions on how to implement the dataset format parameter in my shutdown script.
My current shutdown script below has a hardcoded html path/filename and I'd like to use the FeatureWriter dataset parameter as url to my shutdown script.
import fme
import fmeobjects
import webbrowser
new = 2 # open in a new tab, if possible
# open an HTML file on my own (Windows) computer
url = "file://///H:/2016/DGN_Conversions/Solution/output/HelloWorld.html"
webbrowser.open(url,new=new)
I added a pythonCaller after my featureWriter with the script below
print MyFile outputs
\\alxapfs23\RSALVALE$\2016\DGN_Conversions\Solution\output\HelloWorld.html
import fme
import fmeobjects
# Template Function interface:
# When using this function, make sure its name is set as the value of
# the 'Class or Function to Process Features' transformer parameter
def processFeature(feature):
global MyFile
MyFile = feature.getAttribute('_dataset')
print MyFile
pass
I get this error message from FME: FME_END_PYTHON: evaluating python script from string...
2016-07-21 10:57:03| 1.3| 0.0|INFORM|END - ProcessID: 13812, peak process memory usage: 70520 kB, current process memory usage: 70416 kB
Python Exception <TypeError>: unsupported operand type(s) for &: 'str' and 'str'
Traceback (most recent call last):
File "<string>", line 12, in <module>
TypeError: unsupported operand type(s) for &: 'str' and 'str'
Error executing string
@ken and @takashi do you have any suggestions? Thanks!
@geospatiallover
This works for me:
import fmeobjectsimport webbrowser# Template Function interface:def popup(feature): MyFile = feature.getAttribute('_dataset') print MyFile new = 2 # open in a new tab, if possible # open an HTML file on my own (Windows) computer url = MyFile webbrowser.open(url,new=new)
Here's it running in a test Workspace:
htmlbrowserpopup.fmw
I need some suggestions on how to implement the dataset format parameter in my shutdown script.
My current shutdown script below has a hardcoded html path/filename and I'd like to use the FeatureWriter dataset parameter as url to my shutdown script.
import fme
import fmeobjects
import webbrowser
new = 2 # open in a new tab, if possible
# open an HTML file on my own (Windows) computer
url = "file://///H:/2016/DGN_Conversions/Solution/output/HelloWorld.html"
webbrowser.open(url,new=new)
I added a pythonCaller after my featureWriter with the script below
print MyFile outputs
\\alxapfs23\RSALVALE$\2016\DGN_Conversions\Solution\output\HelloWorld.html
import fme
import fmeobjects
# Template Function interface:
# When using this function, make sure its name is set as the value of
# the 'Class or Function to Process Features' transformer parameter
def processFeature(feature):
global MyFile
MyFile = feature.getAttribute('_dataset')
print MyFile
pass
I get this error message from FME: FME_END_PYTHON: evaluating python script from string...
2016-07-21 10:57:03| 1.3| 0.0|INFORM|END - ProcessID: 13812, peak process memory usage: 70520 kB, current process memory usage: 70416 kB
Python Exception <TypeError>: unsupported operand type(s) for &: 'str' and 'str'
Traceback (most recent call last):
File "<string>", line 12, in <module>
TypeError: unsupported operand type(s) for &: 'str' and 'str'
Error executing string
Can you show us your shutdown script?
@geospatiallover
This works for me:
import fmeobjectsimport webbrowser# Template Function interface:def popup(feature): MyFile = feature.getAttribute('_dataset') print MyFile new = 2 # open in a new tab, if possible # open an HTML file on my own (Windows) computer url = MyFile webbrowser.open(url,new=new)
Here's it running in a test Workspace:
htmlbrowserpopup.fmw
Thanks and I tested your FMW and it worked as suggested.
Hello @geospatiallover - Please try publishing the Dataset Value as a parameter in the FeatureWriter and then access this parameter in the python shutdown script using something like: SourceDataset = FME_MacroValues['URL'] - where 'URL' is the published parameter name.
@CandaceAtSafe, I got your email and sample fmw and it worked for me. Thanks!
Hi, On the issue of passing runtime data from FME Workspace to shutdown script this one, bit old fashioned may be, however works for me hFME 2015], might not work on all platforms and might be a bit dirty:
I use a Creator and a PythonCaller executing the following script that creates an environment variable:
import fme
import fmeobjects
import os
# Template Function interface:
def FeatureProcessor(feature):
os.environc'A_VAR'] = 'My value'
print os.environr'A_VAR']
pass
The shutdown python script just references the Env var created in the PythonCaller script:
import os
print 'THIS IS SHUTDOWN\n'
print os.environp'A_VAR']
Here is the result:
.
.
.
.
Translation was SUCCESSFUL with 0 warning(s) (0 feature(s) output)
FME Session Duration: 1.2 seconds. (CPU: 0.2s user, 0.5s system)
END - ProcessID: 5796, peak process memory usage: 60748 kB, current process memory usage: 60644 kB
FME_END_PYTHON: evaluating python script from string...
FME_END_PYTHON: python script execution complete.
Translation was SUCCESSFUL
My value
THIS IS SHUTDOWN
My value
Basically environ is a global struct too.
