afs commented on code in PR #2152:
URL: https://github.com/apache/jena/pull/2152#discussion_r1442886998


##########
jena-extras/jena-querybuilder/src/main/java/org/apache/jena/arq/querybuilder/rewriters/BuildElementVisitor.java:
##########
@@ -125,8 +125,16 @@ public void visit(ElementGroup el) {
             // noting to do
             result = el;
         } else if (lst.size() == 1) {

Review Comment:
   Then better to solve in the `AlgebraGenerator`.
   I'll add `ElementBind` to #2155 and look for a general solution.
   
   A separate matter which would need test case changes  is whether 
querybuilder should create ASTs the parser might generate and have the 
equivalance `querybuilder -> string -> parse-> query` and `querybuilder.build 
-> query`.
   
   When used over the wire, queries from the querybuilder are turned into 
strings.
   
   Issue #2156 for whether the querybuilder ought to try for parser-compatible 
syntax structures.



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