{"action":"created","issue":{"url":"https://api.github.com/repos/realm/realm-cocoa/issues/2459","labels_url":"https://api.github.com/repos/realm/realm-cocoa/issues/2459/labels{/name}","comments_url":"https://api.github.com/repos/realm/realm-cocoa/issues/2459/comments","events_url":"https://api.github.com/repos/realm/realm-cocoa/issues/2459/events","html_url":"https://github.com/realm/realm-cocoa/issues/2459","id":103618047,"number":2459,"title":"Support sharing a realm file between processes with strictly additive schema differences","user":{"login":"jpsim","id":474794,"avatar_url":"https://avatars.githubusercontent.com/u/474794?v=3","gravatar_id":"","url":"https://api.github.com/users/jpsim","html_url":"https://github.com/jpsim","followers_url":"https://api.github.com/users/jpsim/followers","following_url":"https://api.github.com/users/jpsim/following{/other_user}","gists_url":"https://api.github.com/users/jpsim/gists{/gist_id}","starred_url":"https://api.github.com/users/jpsim/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jpsim/subscriptions","organizations_url":"https://api.github.com/users/jpsim/orgs","repos_url":"https://api.github.com/users/jpsim/repos","events_url":"https://api.github.com/users/jpsim/events{/privacy}","received_events_url":"https://api.github.com/users/jpsim/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/realm/realm-cocoa/labels/enhancement","name":"enhancement","color":"84b6eb"},{"url":"https://api.github.com/repos/realm/realm-cocoa/labels/P1","name":"P1","color":"ededed"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-08-27T23:49:38Z","updated_at":"2015-08-29T04:14:53Z","closed_at":null,"body":"Say app A and app B in an iOS app group want to share a Realm file, but they may be on different schema versions, it would be useful if they could use Realm in a \"unversioned\" mode in which migrations are never run (or required).\r\n\r\nWe'd have to make the following changes to support this use case:\r\n\r\n1. add an \"unversioned\" mode of operation to RLMConfiguration\r\n2. prevent setting the schema version on a realm\r\n3. support schema additions at any time (as this may be done by a different process)\r\n4. update accessor logic to support having extra rows (this might already work)\r\n5. not remove columns when they're no longer present in the schema\r\n6. write lots of tests"},"comment":{"url":"https://api.github.com/repos/realm/realm-cocoa/issues/comments/135938749","html_url":"https://github.com/realm/realm-cocoa/issues/2459#issuecomment-135938749","issue_url":"https://api.github.com/repos/realm/realm-cocoa/issues/2459","id":135938749,"user":{"login":"kspangsege","id":180705,"avatar_url":"https://avatars.githubusercontent.com/u/180705?v=3","gravatar_id":"","url":"https://api.github.com/users/kspangsege","html_url":"https://github.com/kspangsege","followers_url":"https://api.github.com/users/kspangsege/followers","following_url":"https://api.github.com/users/kspangsege/following{/other_user}","gists_url":"https://api.github.com/users/kspangsege/gists{/gist_id}","starred_url":"https://api.github.com/users/kspangsege/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kspangsege/subscriptions","organizations_url":"https://api.github.com/users/kspangsege/orgs","repos_url":"https://api.github.com/users/kspangsege/repos","events_url":"https://api.github.com/users/kspangsege/events{/privacy}","received_events_url":"https://api.github.com/users/kspangsege/received_events","type":"User","site_admin":false},"created_at":"2015-08-29T04:14:53Z","updated_at":"2015-08-29T04:14:53Z","body":"@jpsim, should 4 have been \"extra columns\"?"}}