Artist a1 = context.newObject(Artist.class);
a1.setArtistName("XyzQ");
Painting p01 = context.newObject(Painting.class);
p01.setPaintingTitle("1");
a1.addToPaintingArray(p01);
Painting p02 = context.newObject(Painting.class);
p02.setPaintingTitle("2");
a1.addToPaintingArray(p02);