[GitHub] [jena] jmkeil commented on issue #599: JENA-1751: Enable inline use of Element Subclasses

[GitBox <gi...@apache.org>]

jmkeil commented on issue #599: JENA-1751: Enable inline use of Element Subclasses
URL: https://github.com/apache/jena/pull/599#issuecomment-529492556
 
 
   The idea was to use it for inline `Expr` building during `Query` building:
   
   
   ```java
   new SelectBuilder().addFilter(new E_NotExists(
       new ElementPathBlock(new Triple(nodeA, nodeB, nodeC),
                            new Triple(nodeD, nodeE, nodeF))
   ));
   ```
   However, I was not aware of the `ExprFactory` also allowing to do this inline:
   
   ```java
   ExprFactory e = new ExprFactory();
   new SelectBuilder().addFilter(e.notexists(
       new SelectBuilder().addWhere(nodeA, nodeB, nodeC)
                          .addWhere(nodeD, nodeE, nodeF)
   ));
   ```
   So, it is not needed.

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