[GitHub] [cayenne] stariy95 opened a new pull request, #521: CAY-2759 Add utility methods to the SELF property

[GitBox]

stariy95 opened a new pull request, #521:
URL: https://github.com/apache/cayenne/pull/521

   Here are some usage examples of the methods added:
   ```java
   // query() method to create ObjectSelect
   List<Artist> artistList = Artist.SELF.query().select(context);
   // same with a where clause
   Artist artistById = 
Artist.SELF.query(Artist.SELF.eqId(1)).selectOne(context);
   // shortcut for a EXISTS/NOT EXISTS subquery 
   long count = 
Artist.SELF.query(Painting.SELF.notExists(Painting.TO_ARTIST.eq(Artist.SELF.enclosing()))).selectCount(context);
   // column select
   List<String> names = 
Artist.SELF.columnQuery(Artist.ARTIST_NAME).select(context);
   ```


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