If I have a class called Artist, which has many Song:
class Artist {
String name
static hasMany = [songs : Song]
}
class Song {
String title
Integer duration
}
I want to know which artists sang a list of titles. For example I want to know the artists who sang Hello
, My Love
, and Yesterday
(An array of String). What is the best way to do this?
I tried using criteria and findAll, but can't really figure out which is the best way. Any ideas?
This HQL will work:
def artists = Artist.executeQuery(
'select distinct a from Artist a join a.songs song where song.title in (:titles)',
[titles: ['Hello', 'My Love', 'Yesterday']])
It will return a list of artists, but if there's only one result you can get it as artists[0]
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