{"action":"opened","issue":{"url":"https://api.github.com/repos/jankotek/mapdb/issues/882","repository_url":"https://api.github.com/repos/jankotek/mapdb","labels_url":"https://api.github.com/repos/jankotek/mapdb/issues/882/labels{/name}","comments_url":"https://api.github.com/repos/jankotek/mapdb/issues/882/comments","events_url":"https://api.github.com/repos/jankotek/mapdb/issues/882/events","html_url":"https://github.com/jankotek/mapdb/issues/882","id":304202556,"number":882,"title":"How to update a collection.. ?","user":{"login":"clojj","id":4367963,"avatar_url":"https://avatars3.githubusercontent.com/u/4367963?v=4","gravatar_id":"","url":"https://api.github.com/users/clojj","html_url":"https://github.com/clojj","followers_url":"https://api.github.com/users/clojj/followers","following_url":"https://api.github.com/users/clojj/following{/other_user}","gists_url":"https://api.github.com/users/clojj/gists{/gist_id}","starred_url":"https://api.github.com/users/clojj/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/clojj/subscriptions","organizations_url":"https://api.github.com/users/clojj/orgs","repos_url":"https://api.github.com/users/clojj/repos","events_url":"https://api.github.com/users/clojj/events{/privacy}","received_events_url":"https://api.github.com/users/clojj/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-03-11T22:53:31Z","updated_at":"2018-03-11T22:53:31Z","closed_at":null,"author_association":"NONE","body":"If a collection is used as the map's _value_, how is the collection (for example java.util.List<String>) updated ?\r\n\r\nKotlin example (this doesn't persist the added list-element):\r\n\r\n`           val list = treeMap[\"myKey\"] as ArrayList<Delay>\r\n            list.add(delay)\r\n            db.commit()\r\n`"}}
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