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Add realm specific implementation for List.add and List.insert #894

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merged 4 commits into from Sep 12, 2022
Merged

Add realm specific implementation for List.add and List.insert #894

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f2160b8
Add realm specific implementation for List.add and List.insert
nielsenko Sep 9, 2022
014b32e
Add test case
nielsenko Sep 9, 2022
1221f77
Update CHANGELOG
nielsenko Sep 9, 2022
e5940ca
Add test case for decreasing lenght
nielsenko Sep 12, 2022
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -8,6 +8,7 @@
### Fixed
* Allow null arguments on query. ([#872](https://github.com/realm/realm-dart/pull/872)). Fixes [#871](https://github.com/realm/realm-dart/issues/871)
* Previously removeAt did not truncate length. ([#884](https://github.com/realm/realm-dart/pull/884)). Fixes [#883](https://github.com/realm/realm-dart/issues/883)
* List.length= now throws, if you try to increase length, ([#894](https://github.com/realm/realm-dart/pull/894)).

### Compatibility
* Realm Studio: 12.0.0 or later.
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16 changes: 15 additions & 1 deletion lib/src/list.dart
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Expand Up @@ -63,7 +63,11 @@ class ManagedRealmList<T extends Object?> extends collection.ListBase<T> with Re
@override
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Suggested change
@override
/// Setting the `length` is a required method on [List], but makes less sense
/// for [RealmList]s. You can only decrease the length, increasing it throws an [RealmException].

set length(int newLength) {
var l = length;
if (newLength < l) removeRange(newLength, l);
if (newLength < l) {
removeRange(newLength, l);
} else {
throw RealmException('You cannot increase length on a realm list without adding elements');
}
}

@override
Expand Down Expand Up @@ -93,6 +97,16 @@ class ManagedRealmList<T extends Object?> extends collection.ListBase<T> with Re
}
}

@override
void add(T element) {
RealmListInternal.setValue(handle, realm, length, element);
}

@override
void insert(int index, T element) {
realmCore.listInsertElementAt(handle, index, element);
}

@override
void operator []=(int index, T value) {
RealmListInternal.setValue(handle, realm, index, value);
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11 changes: 11 additions & 0 deletions test/list_test.dart
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Expand Up @@ -699,4 +699,15 @@ Future<void> main([List<String>? args]) async {
expect(team.players, isNot(players));
expect(team.players, unorderedMatches(players));
});

test('ManagedRealmList.length= throws', () {
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final config = Configuration.local([Team.schema, Person.schema]);
final realm = getRealm(config);

final team = Team('sad team');

realm.write(() => realm.add(team));

expect(() => realm.write(() => team.players.length = 100), throws<RealmException>('You cannot increase length on a realm list without adding elements'));
});
}