dsmiley commented on a change in pull request #1303: LUCENE-9114: Improve 
ValueSourceScorer's Default Cost Implementation
URL: https://github.com/apache/lucene-solr/pull/1303#discussion_r387662567
 
 

 ##########
 File path: 
lucene/queries/src/java/org/apache/lucene/queries/function/FunctionValues.java
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 @@ -41,6 +41,9 @@
 //   want the Query carrying around big objects
 public abstract class FunctionValues {
 
+  // Default cost for FunctionValues -- ideally should be overriden by 
concrete implementations
+  public static final int DEFAULT_COST = 100;
 
 Review comment:
   This is fine with me but FWIW I wouldn't even bother defining it.  It has no 
value set aside like this; I doubt any user code would want to refer to it.  If 
we want to document what the default cost is, we should say so in cost()'s 
javadoc.  I know some devs like to make static constants for everything but IMO 
it's sometimes wasted ceremony.

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