Hao Zhong created ARIES-1700:
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             Summary: A possible null pointer
                 Key: ARIES-1700
                 URL: https://issues.apache.org/jira/browse/ARIES-1700
             Project: Aries
          Issue Type: Bug
          Components: Blueprint
    Affects Versions: blueprint-core-1.7.0
            Reporter: Hao Zhong
            Priority: Minor


The current version of NoOsgiRecipeBuilder has the following code:
 else if (v instanceof IdRefMetadata) {
            // TODO: make it work with property-placeholders?
            String componentName = ((IdRefMetadata) v).getComponentId();
            IdRefRecipe rnr = new IdRefRecipe(getName(null), componentName);
            return rnr;
        } else {
            throw new IllegalStateException("Unsupported value: " + 
v.getClass().getName());
        }
Here, v.getClass() can return null. The line shall be revised as:
throw new IllegalStateException("Unsupported value: " + (v != null ? 
v.getClass().getName() : "null"));

Indeed, I notice that the file, RecipeBuilder, has the following similar code:

else if (v instanceof IdRefMetadata) {
            // TODO: make it work with property-placeholders?
            String componentName = ((IdRefMetadata) v).getComponentId();
            IdRefRecipe rnr = new IdRefRecipe(getName(null), componentName);
            return rnr;
        } else {
            throw new IllegalStateException("Unsupported value: " + (v != null 
? v.getClass().getName() : "null"));
        }
It checks whether v is null or not.



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