Reading properties from graph BEFORE loading

deshartman

• June 16, 2009 00:00

• Answered

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Hi,

Is it possible to read the properties from the graph file, BEFORE loading it. I am trying to get a list of the properties in the XML file to present to the user as configurable variables. Once the user has filled in the values, I then load the graph with these variables.

Here is the code I am using to get the properties at the moment, but I get warnings about the properties not being defined

try {
    EngineInitializer.initEngine("plugins", null, null);
		
    TransformationGraph graph = TransformationGraphXMLReaderWriter.loadGraph(graphXMLFile, runtimeContext.getAdditionalProperties());
					
    TypedProperties currentGraphProperties = graph.getGraphProperties();
    System.out.println("Properties = " + currentGraphProperties);
					
} catch (XMLConfigurationException xmle){
    System.out.println("BuyerAdaptor Upload - graph XMLConfigurationException " + xmle);
} catch (GraphConfigurationException gce) {
    System.out.println("BuyerAdaptor Upload - graph GraphConfigurationException" + gce);
}

===========

WARN  16-06 13:18:29,136 (PropertyRefResolver.java:resolveRef2:214)  -Can't resolve reference to graph property: SUPPLIER.FILE.ID

Thanks
Des

• 

  mzatopek

  • June 16, 2009 11:04

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  Unfortunately we don't have any specialized graph properties reader, which you can use in your case. We haven't need it before. Nonetheless, it shouldn't be so complicated to write your own. Check TransformationGraphXMLReaderWriter.instantiateProperties() method. This method tries to resolve all parameter references, what is in fact undesirable in your case (if I understand well what's your point).
  
  Martin
• 

  deshartman

  • June 17, 2009 06:43

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  Martin
  
  Thanks for the reply. I guess a simple XML ready would also do the trick?
  
  Thanks
  Des

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