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This commit is contained in:
Arseniy Borisov 2017-09-04 17:33:42 +03:00
parent 26a9bba311
commit b779bed2bf
5 changed files with 27 additions and 31 deletions
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44
src/main/java/ru/touchin/roboswag/core/android/support/v7/util/DiffUtil.java
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@ -50,13 +50,13 @@ import java.util.List;
* and the cost of your comparison methods. Below are some average run times for reference:
* (The areSame list is composed of random UUID Strings and the tests are run on Nexus 5X with M)
* <ul>
* <li>100 items and 10 modifications: avg: 0.39 ms, median: 0.35 ms
* <li>100 items and 100 modifications: 3.82 ms, median: 3.75 ms
* <li>100 items and 100 modifications without moves: 2.09 ms, median: 2.06 ms
* <li>1000 items and 50 modifications: avg: 4.67 ms, median: 4.59 ms
* <li>1000 items and 50 modifications without moves: avg: 3.59 ms, median: 3.50 ms
* <li>1000 items and 200 modifications: 27.07 ms, median: 26.92 ms
* <li>1000 items and 200 modifications without moves: 13.54 ms, median: 13.36 ms
* <li>100 items and 10 modifications: avg: 0.39 ms, median: 0.35 ms
* <li>100 items and 100 modifications: 3.82 ms, median: 3.75 ms
* <li>100 items and 100 modifications without moves: 2.09 ms, median: 2.06 ms
* <li>1000 items and 50 modifications: avg: 4.67 ms, median: 4.59 ms
* <li>1000 items and 50 modifications without moves: avg: 3.59 ms, median: 3.50 ms
* <li>1000 items and 200 modifications: 27.07 ms, median: 26.92 ms
* <li>1000 items and 200 modifications without moves: 13.54 ms, median: 13.36 ms
* </ul>
*
* <p>Due to implementation constraints, the max size of the list can be 2^26.
@ -83,7 +83,6 @@ public class DiffUtil {
* Calculates the list of update operations that can covert one list into the other one.
*
* @param cb The callback that acts as a gateway to the backing list data
*
* @return A DiffResult that contains the information about the edit sequence to convert the
* old list into the new list.
*/
@ -98,9 +97,8 @@ public class DiffUtil {
* positions), you can disable move detection which takes <code>O(N^2)</code> time where
* N is the number of added, moved, removed items.
*
* @param cb The callback that acts as a gateway to the backing list data
* @param cb The callback that acts as a gateway to the backing list data
* @param detectMoves True if DiffUtil should try to detect moved items, false otherwise.
*
* @return A DiffResult that contains the information about the edit sequence to convert the
* old list into the new list.
*/
@ -185,7 +183,7 @@ public class DiffUtil {
}
private static Snake diffPartial(Callback cb, int startOld, int endOld,
int startNew, int endNew, int[] forward, int[] backward, int kOffset) {
int startNew, int endNew, int[] forward, int[] backward, int kOffset) {
final int oldSize = endOld - startOld;
final int newSize = endNew - startNew;
@ -329,7 +327,6 @@ public class DiffUtil {
*
* @param oldItemPosition The position of the item in the old list
* @param newItemPosition The position of the item in the new list
*
* @return A payload object that represents the change between the two items.
*/
@Nullable
@ -453,14 +450,14 @@ public class DiffUtil {
private final boolean mDetectMoves;
/**
* @param callback The callback that was used to calculate the diff
* @param snakes The list of Myers' snakes
* @param callback The callback that was used to calculate the diff
* @param snakes The list of Myers' snakes
* @param oldItemStatuses An int[] that can be re-purposed to keep metadata
* @param newItemStatuses An int[] that can be re-purposed to keep metadata
* @param detectMoves True if this DiffResult will try to detect moved items
* @param detectMoves True if this DiffResult will try to detect moved items
*/
DiffResult(Callback callback, List<Snake> snakes, int[] oldItemStatuses,
int[] newItemStatuses, boolean detectMoves) {
int[] newItemStatuses, boolean detectMoves) {
mSnakes = snakes;
mOldItemStatuses = oldItemStatuses;
mNewItemStatuses = newItemStatuses;
@ -556,15 +553,14 @@ public class DiffUtil {
* Finds a matching item that is before the given coordinates in the matrix
* (before : left and above).
*
* @param x The x position in the matrix (position in the old list)
* @param y The y position in the matrix (position in the new list)
* @param x The x position in the matrix (position in the old list)
* @param y The y position in the matrix (position in the new list)
* @param snakeIndex The current snake index
* @param removal True if we are looking for a removal, false otherwise
*
* @param removal True if we are looking for a removal, false otherwise
* @return True if such item is found.
*/
private boolean findMatchingItem(final int x, final int y, final int snakeIndex,
final boolean removal) {
final boolean removal) {
final int myItemPos;
int curX;
int curY;
@ -664,7 +660,7 @@ public class DiffUtil {
}
private static PostponedUpdate removePostponedUpdate(List<PostponedUpdate> updates,
int pos, boolean removal) {
int pos, boolean removal) {
for (int i = updates.size() - 1; i >= 0; i--) {
final PostponedUpdate update = updates.get(i);
if (update.posInOwnerList == pos && update.removal == removal) {
@ -680,7 +676,7 @@ public class DiffUtil {
}
private void dispatchAdditions(List<PostponedUpdate> postponedUpdates,
ListUpdateCallback updateCallback, int start, int count, int globalIndex) {
ListUpdateCallback updateCallback, int start, int count, int globalIndex) {
if (!mDetectMoves) {
updateCallback.onInserted(start, count);
return;
@ -720,7 +716,7 @@ public class DiffUtil {
}
private void dispatchRemovals(List<PostponedUpdate> postponedUpdates,
ListUpdateCallback updateCallback, int start, int count, int globalIndex) {
ListUpdateCallback updateCallback, int start, int count, int globalIndex) {
if (!mDetectMoves) {
updateCallback.onRemoved(start, count);
return;

4
src/main/java/ru/touchin/roboswag/core/observables/collections/ObservableCollection.java
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@ -98,8 +98,8 @@ public abstract class ObservableCollection<TItem> {
* Method to notify that collection have changed.
*
* @param insertedItems Collection of inserted items;
* @param removedItems Collection of removed items;
* @param changes Changes of collection.
* @param removedItems Collection of removed items;
* @param changes Changes of collection.
*/
protected void notifyAboutChanges(@NonNull final List<TItem> insertedItems,
@NonNull final List<TItem> removedItems,

4
src/main/java/ru/touchin/roboswag/core/observables/collections/ObservableList.java
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@ -246,8 +246,8 @@ public class ObservableList<TItem> extends ObservableCollection<TItem> implement
/**
* Enable diff utils algorithm in collection changes.
*
* @param detectMoves The flag that determines whether the {@link Change.Moved} changes will be generated or not;
* @param sameItemsPredicate Predicate for the determination of the same elements;
* @param detectMoves The flag that determines whether the {@link Change.Moved} changes will be generated or not;
* @param sameItemsPredicate Predicate for the determination of the same elements;
* @param changePayloadProducer Function that calculate change payload when items the same but contents are different.
*/
public void enableDiffUtils(final boolean detectMoves,

4
src/main/java/ru/touchin/roboswag/core/observables/storable/Converter.java
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@ -38,7 +38,7 @@ public interface Converter<TObject, TStoreObject> {
*
* @param objectType Type of object;
* @param storeObjectType Type of store object allowed to store;
* @param object Object to be converted to store object;
* @param object Object to be converted to store object;
* @return Object that is allowed to store into specific {@link Store};
* @throws ConversionException Exception during conversion. Usually it indicates illegal state.
*/
@ -51,7 +51,7 @@ public interface Converter<TObject, TStoreObject> {
*
* @param objectType Type of object;
* @param storeObjectType Type of store object allowed to store;
* @param storeObject Object from specific {@link Store};
* @param storeObject Object from specific {@link Store};
* @return Object converted from store object;
* @throws ConversionException Exception during conversion. Usually it indicates illegal state.
*/

2
src/main/java/ru/touchin/roboswag/core/utils/pairs/NonNullPair.java
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@ -32,7 +32,7 @@ import ru.touchin.roboswag.core.utils.ObjectUtils;
* Both arguments are not null.
* Note that if you want to save this pair in state, you need make TFirst and TSecond Serializable too.
*
* @param <TFirst> type of the first nonnull argument.
* @param <TFirst> type of the first nonnull argument.
* @param <TSecond> type of the second nonnull argument.
*/
public class NonNullPair<TFirst, TSecond> implements Serializable {