How To install and Create executable Graph in linux??

sudeep.dhonde

• September 17, 2010 00:00

• Answered

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Hi All,
I am pretty new to Clover, I've created a Application on windows(Its all very easy I must admit :) ), Now I want to Install Clover on Linux and run my application there through any script.

Any help would be appreciated.

Regards,
Sudeep.

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  avackova

  • September 20, 2010 07:22

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  Hello,
  in cloverETL/bin you can find scripts for graph execution: clover.bat for Windows and clover for linux. Set the permission to the scripts to executable and you can run the graph, e.g:

  /home/user/cloverETL/bin/clover graph/my_graph.grf

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  megreddy

  • October 20, 2010 15:16

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  If I'm understanding this correctly, there is a way to execute a graph from command line (so without launching Clover)? If so, could you provide further clarification on how to do this in Windows?
  
  I'm looking for a way to either (1) package a .grf as an .exe, or (2) write a script that periodically runs the graph logic. In my case, the graph is a simple "Read->Format->Aggregate/Analysis->Write" process.
  
  Thanks in advance for the help!
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  avackova

  • October 21, 2010 11:24

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  You can add a task to Windows Scheduler, that executes clover.bat script.
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  megreddy

  • October 21, 2010 14:20

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  Thanks for the response! Are you referring to the clover.bat script located (on Windows) in [C:\Program Files\CloverETL\plugins\com.cloveretl.gui_3.0.0\lib\bin]?
  
  If so, I tried moving clover.bat (and the companion commonlib.bat) into the local directory of my .grf and entered
  
  

  cd [local directory]
  clover.bat test_graph.grf

  
  This sets CLOVER_CMD_LINE_ARGS = test_graph.grf. But it terminates in an error
  
  

  Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file
       at java.lang.ClassLoader.defineClass1(Native Method)
       at ...

  
  Do you know where my error is?
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  avackova

  • October 22, 2010 07:27

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  CloverETL 3.0 requires java 1.6 or higher and I suppose you try to run the graph with lower java version. This is probably the reason of the error.
  
  But to run successfully the graph you need complete CloverETL (all jar files from CloverETL/lib directory and all from CloverETL/plugins directory).
  
  This is the simplest instruction how to run the graph from command line:
  

  
  
  • set system variable CLOVER_HOME to point to CloverETL (set CLOVER_HOME="C:\Program Files\CloverETL")
  
  
  • go to the project folder
  
  
  • call the clover.bat script ("C:\Program Files\CloverETL\bin\clover.bat" graph/my.grf)
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  megreddy

  • October 22, 2010 18:46

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  It was in fact a simple matter of updating Java and setting CLOVER_HOME. Thanks for your help Agata!
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  megreddy

  • November 02, 2010 21:01

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  As a follow-up to your instructions, I was wondering how to set the CLOVER_HOME and CLOVER_CMD_LINE_ARGS values within the .bat. That is, I want to simply set up a Windows Schedule to execute clover.bat, rather than type the command line:
  

  "C:\Program Files\...\clover.bat" graph\myGraph.grf

  
  
  Thanks for the help!
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  smrckoval

  • November 03, 2010 11:03

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  Set the CLOVER_HOME system variable. Pretty nice Task Sheduler tutorial can be found here.
  
  Just create an action Start a program, put the complete clover.bat URL into Program/script field and the complete graph URL as the optional argument.

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