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https://github.com/vector-im/element-android.git
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Refactor threads to support the new timeline implementation
This commit is contained in:
ariskotsomitopoulos
parent
1b41a72e72
commit
37ec3fdf84
@ -93,7 +93,7 @@ internal class TimelineChunk(private val chunkEntity: ChunkEntity,
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handleDatabaseChangeSet(frozenResults, changeSet)
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}
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private var timelineEventEntities: RealmResults<TimelineEventEntity> = chunkEntity.sortedTimelineEvents()
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private var timelineEventEntities: RealmResults<TimelineEventEntity> = chunkEntity.sortedTimelineEvents(timelineSettings.rootThreadEventId)
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private val builtEvents: MutableList<TimelineEvent> = Collections.synchronizedList(ArrayList())
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private val builtEventsIndexes: MutableMap<String, Int> = Collections.synchronizedMap(HashMap<String, Int>())
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@ -138,13 +138,18 @@ internal class TimelineChunk(private val chunkEntity: ChunkEntity,
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} else if (direction == Timeline.Direction.BACKWARDS && prevChunk != null) {
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return prevChunk?.loadMore(count, direction, fetchOnServerIfNeeded) ?: LoadMoreResult.FAILURE
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}
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val loadFromStorageCount = loadFromStorage(count, direction)
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Timber.v("Has loaded $loadFromStorageCount items from storage in $direction")
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val offsetCount = count - loadFromStorageCount
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val loadFromStorage = loadFromStorage(count, direction).also{
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logLoadedFromStorage(it,direction)
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}
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val offsetCount = count - loadFromStorage.numberOfEvents
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return if (direction == Timeline.Direction.FORWARDS && isLastForward.get()) {
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LoadMoreResult.REACHED_END
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} else if (direction == Timeline.Direction.BACKWARDS && isLastBackward.get()) {
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LoadMoreResult.REACHED_END
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} else if (timelineSettings.isThreadTimeline() && loadFromStorage.threadReachedEnd) {
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LoadMoreResult.REACHED_END
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} else if (offsetCount == 0) {
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LoadMoreResult.SUCCESS
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} else {
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@ -188,6 +193,15 @@ internal class TimelineChunk(private val chunkEntity: ChunkEntity,
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}
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}
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/**
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* Simple log that displays the number and timeline of loaded events
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*/
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private fun logLoadedFromStorage(loadedFromStorage: LoadedFromStorage, direction: Timeline.Direction) =
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Timber.v("[" +
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"${if (timelineSettings.isThreadTimeline()) "ThreadTimeLine" else "Timeline"}] Has loaded " +
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"${loadedFromStorage.numberOfEvents} items from storage in $direction " +
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if (timelineSettings.isThreadTimeline() && loadedFromStorage.threadReachedEnd) "[Reached End]" else "")
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fun getBuiltEventIndex(eventId: String, searchInNext: Boolean, searchInPrev: Boolean): Int? {
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val builtEventIndex = builtEventsIndexes[eventId]
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if (builtEventIndex != null) {
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@ -268,29 +282,31 @@ internal class TimelineChunk(private val chunkEntity: ChunkEntity,
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/**
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* This method tries to read events from the current chunk.
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* @return the number of events loaded. If we are in a thread timeline it also returns
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* whether or not we reached the end/root message
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*/
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private suspend fun loadFromStorage(count: Int, direction: Timeline.Direction): Int {
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val displayIndex = getNextDisplayIndex(direction) ?: return 0
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private suspend fun loadFromStorage(count: Int, direction: Timeline.Direction): LoadedFromStorage {
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val displayIndex = getNextDisplayIndex(direction) ?: return LoadedFromStorage()
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val baseQuery = timelineEventEntities.where()
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val timelineEvents = if (timelineSettings.rootThreadEventId != null) {
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baseQuery
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.beginGroup()
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.equalTo(TimelineEventEntityFields.ROOT.ROOT_THREAD_EVENT_ID, timelineSettings.rootThreadEventId)
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.or()
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.equalTo(TimelineEventEntityFields.ROOT.EVENT_ID, timelineSettings.rootThreadEventId)
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.endGroup()
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// val timelineEvents = if (timelineSettings.rootThreadEventId != null) {
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// baseQuery
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// .beginGroup()
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// .equalTo(TimelineEventEntityFields.ROOT.ROOT_THREAD_EVENT_ID, timelineSettings.rootThreadEventId)
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// .or()
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// .equalTo(TimelineEventEntityFields.ROOT.EVENT_ID, timelineSettings.rootThreadEventId)
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// .endGroup()
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// .offsets(direction, count, displayIndex)
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// .findAll()
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// .orEmpty()
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// } else {
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val timelineEvents = baseQuery
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.offsets(direction, count, displayIndex)
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.findAll()
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.orEmpty()
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} else {
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baseQuery
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.offsets(direction, count, displayIndex)
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.findAll()
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.orEmpty()
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}
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// }
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if (timelineEvents.isEmpty()) return 0
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if (timelineEvents.isEmpty()) return LoadedFromStorage()
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fetchRootThreadEventsIfNeeded(timelineEvents)
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if (direction == Timeline.Direction.FORWARDS) {
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builtEventsIndexes.entries.forEach { it.setValue(it.value + timelineEvents.size) }
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@ -309,9 +325,20 @@ internal class TimelineChunk(private val chunkEntity: ChunkEntity,
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builtEvents.add(timelineEvent)
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}
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}
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return timelineEvents.size
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return LoadedFromStorage(
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threadReachedEnd = threadReachedEnd(timelineEvents),
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numberOfEvents = timelineEvents.size)
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}
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/**
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* Returns whether or not the the thread has reached end. It returned false if the current timeline
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* is not a thread timeline
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*/
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private fun threadReachedEnd(timelineEvents: List<TimelineEventEntity>): Boolean =
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timelineSettings.rootThreadEventId?.let { rootThreadId ->
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timelineEvents.firstOrNull { it.eventId == rootThreadId }?.let { true }
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} ?: false
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/**
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* This function is responsible to fetch and store the root event of a thread event
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* in order to be able to display the event to the user appropriately
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@ -362,7 +389,8 @@ internal class TimelineChunk(private val chunkEntity: ChunkEntity,
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val loadMoreResult = try {
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if (token == null) {
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if (direction == Timeline.Direction.BACKWARDS || !chunkEntity.hasBeenALastForwardChunk()) return LoadMoreResult.REACHED_END
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val lastKnownEventId = chunkEntity.sortedTimelineEvents().firstOrNull()?.eventId ?: return LoadMoreResult.FAILURE
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val lastKnownEventId = chunkEntity.sortedTimelineEvents(timelineSettings.rootThreadEventId).firstOrNull()?.eventId
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?: return LoadMoreResult.FAILURE
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val taskParams = FetchTokenAndPaginateTask.Params(roomId, lastKnownEventId, direction.toPaginationDirection(), count)
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fetchTokenAndPaginateTask.execute(taskParams).toLoadMoreResult()
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} else {
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@ -473,6 +501,11 @@ internal class TimelineChunk(private val chunkEntity: ChunkEntity,
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onBuiltEvents = this.onBuiltEvents
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)
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}
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private data class LoadedFromStorage(
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val threadReachedEnd: Boolean = false,
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val numberOfEvents: Int = 0
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)
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}
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private fun RealmQuery<TimelineEventEntity>.offsets(
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@ -493,6 +526,19 @@ private fun Timeline.Direction.toPaginationDirection(): PaginationDirection {
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return if (this == Timeline.Direction.BACKWARDS) PaginationDirection.BACKWARDS else PaginationDirection.FORWARDS
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}
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private fun ChunkEntity.sortedTimelineEvents(): RealmResults<TimelineEventEntity> {
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return timelineEvents.sort(TimelineEventEntityFields.DISPLAY_INDEX, Sort.DESCENDING)
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private fun ChunkEntity.sortedTimelineEvents(rootThreadEventId: String?): RealmResults<TimelineEventEntity> {
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return if (rootThreadEventId == null) {
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timelineEvents
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.sort(TimelineEventEntityFields.DISPLAY_INDEX, Sort.DESCENDING)
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} else {
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timelineEvents
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.where()
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.beginGroup()
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.equalTo(TimelineEventEntityFields.ROOT.ROOT_THREAD_EVENT_ID, rootThreadEventId)
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.or()
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.equalTo(TimelineEventEntityFields.ROOT.EVENT_ID, rootThreadEventId)
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.endGroup()
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.sort(TimelineEventEntityFields.DISPLAY_INDEX, Sort.DESCENDING)
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.findAll()
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}
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}
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@ -25,7 +25,6 @@ import org.matrix.android.sdk.api.session.room.send.SendState
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import org.matrix.android.sdk.internal.database.helper.addIfNecessary
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import org.matrix.android.sdk.internal.database.helper.addStateEvent
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import org.matrix.android.sdk.internal.database.helper.addTimelineEvent
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import org.matrix.android.sdk.internal.database.helper.merge
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import org.matrix.android.sdk.internal.database.helper.updateThreadSummaryIfNeeded
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import org.matrix.android.sdk.internal.database.mapper.toEntity
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import org.matrix.android.sdk.internal.database.model.ChunkEntity
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