Why Precedence Rule Fired API

The MDEX Engine returns information about why a precedence rule fired as a DGraph.WhyPrecedenceRuleFired property on each root dimension value.

The following code samples show how to extract and display the DGraph.WhyPrecedenceRuleFired property from a root dimension value.

Example 104. Java example

// Retrieve the results object.
Navigation result = results.getNavigation();

// Retrieve the refinements.
DimensionList l = result.getRefinementDimensions();

// Retrieve the dimension with ID 80000.
Dimension d = l.getDimension(800000);

// Retrieve the root dval for the dimension.
DimVal root = d.getRoot();
PropertyMap propsMap = root.getProperties();

// Get the WhyPrecedenceRuleFired property value
String wprf = (String) propsMap.get("DGraph.WhyPrecedenceRuleFired");

// Display the  value if one exists
if (wprf != null) {

   //Do something
}


Example 105. .NET example

// Retrieve the results object.
Navigation result = results.Navigation;
            
// Retrieve the refinements.           
DimensionList l = result.RefinementDimensions;
            
// Retrieve the dimension with ID 80000.           
Dimension d = l.GetDimension(800000);
            
// Retrieve the root dval for the dimension.         
DimVal root = d.Root;         
PropertyMap propsMap = root.Properties;
            
// Get the WhyPrecedenceRuleFired property value            
String wprf = propsMap["DGraph.WhyPrecedenceRuleFired"].ToString();
            
// Display the value if one exists
if (wprf != null) {
    
    //Do something
}


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