I'm trying to translate this query in QueryDsl:
update myThings set firstColumn = 'newValue' where secondColumn in ('interesting', 'stuff')
I spent hours looking for documentation but the java fu is just not strong enough in this one... :( I can find all kinds of QueryDsl example, but I cant find any for this. I will probably need SimpleExpression.eqAny(CollectionExpression), but I can't figure out how to build such a CollectionExpression around my simple list of strings.
List<String> interestingValues = Arrays.asList("interesting", "stuff");
queryFactory.update(myThings)
.set(myThings.firstColumn, "newValue")
// .where(myThings.secondColumn.in(interestingValues)
// 'in' will probably try to look in table "interestingValues"?
// .where(myThings.secondColumn.eqAny(interestingValues)
// 'eqAny' seems interesting, but doesn't accept a list
.execute();
All I can find is API definitions, but then I get lost in generics any other "new" java concepts which I still have trouble understanding. An example would be very much appreciated.
1 Answer
You have to use new JPAUpdateClause(session, myThings):
JPAUpdateClause<myThings> update = new JPAUpdateClause(session, myThings);
update.set(myThings.firstColumn, "newValue")
.where(myThings.secondColumn.in(interestingValues))
.execute();
If you are using hibernate, use HibernateUpdateClause() instead;
