diff options
Diffstat (limited to 'android/arch/paging/KeyedDataSource.java')
| -rw-r--r-- | android/arch/paging/KeyedDataSource.java | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/android/arch/paging/KeyedDataSource.java b/android/arch/paging/KeyedDataSource.java index 0d452946..8cf6829c 100644 --- a/android/arch/paging/KeyedDataSource.java +++ b/android/arch/paging/KeyedDataSource.java @@ -103,6 +103,10 @@ import java.util.List; * @param <Value> Type of items being loaded by the DataSource. */ public abstract class KeyedDataSource<Key, Value> extends ContiguousDataSource<Key, Value> { + @Override + public final int countItems() { + return 0; // method not called, can't be overridden + } @Nullable @Override @@ -114,14 +118,7 @@ public abstract class KeyedDataSource<Key, Value> extends ContiguousDataSource<K @Override List<Value> loadBeforeImpl( int currentBeginIndex, @NonNull Value currentBeginItem, int pageSize) { - List<Value> list = loadBefore(getKey(currentBeginItem), pageSize); - - if (list != null && list.size() > 1) { - // TODO: move out of keyed entirely, into the DB DataSource. - list = new ArrayList<>(list); - Collections.reverse(list); - } - return list; + return loadBefore(getKey(currentBeginItem), pageSize); } @Nullable @@ -194,8 +191,6 @@ public abstract class KeyedDataSource<Key, Value> extends ContiguousDataSource<K /** @hide */ @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) - @WorkerThread - @Override public NullPaddedList<Value> loadInitial( @Nullable Key key, int initialLoadSize, boolean enablePlaceholders) { if (isInvalid()) { |