package com.keylesspalace.tusky.db import androidx.room.* import com.keylesspalace.tusky.entity.Status /** * We're trying to play smart here. Server sends us reblogs as two entities one embedded into * another (reblogged status is a field inside of "reblog" status). But it's really inefficient from * the DB perspective and doesn't matter much for the display/interaction purposes. * What if when we store reblog we don't store almost empty "reblog status" but we store * *reblogged* status and we embed "reblog status" into reblogged status. This reversed * relationship takes much less space and is much faster to fetch (no N+1 type queries or JSON * serialization). * "Reblog status", if present, is marked by [reblogServerId], and [reblogAccountId] * fields. */ @Entity( primaryKeys = ["serverId", "timelineUserId"], foreignKeys = ([ ForeignKey( entity = TimelineAccountEntity::class, parentColumns = ["serverId", "timelineUserId"], childColumns = ["authorServerId", "timelineUserId"] ) ]), // Avoiding rescanning status table when accounts table changes. Recommended by Room(c). indices = [Index("authorServerId", "timelineUserId")] ) @TypeConverters(TootEntity.Converters::class) data class TimelineStatusEntity( val serverId: String, // id never flips: we need it for sorting so it's a real id val url: String?, // our local id for the logged in user in case there are multiple accounts per instance val timelineUserId: Long, val authorServerId: String?, val inReplyToId: String?, val inReplyToAccountId: String?, val content: String?, val createdAt: Long, val emojis: String?, val reblogsCount: Int, val favouritesCount: Int, val reblogged: Boolean, val favourited: Boolean, val sensitive: Boolean, val spoilerText: String?, val visibility: Status.Visibility?, val attachments: String?, val mentions: String?, val application: String?, val reblogServerId: String?, // if it has a reblogged status, it's id is stored here val reblogAccountId: String?, val poll: String? ) @Entity( primaryKeys = ["serverId", "timelineUserId"] ) data class TimelineAccountEntity( val serverId: String, val timelineUserId: Long, val localUsername: String, val username: String, val displayName: String, val url: String, val avatar: String, val emojis: String, val bot: Boolean ) class TimelineStatusWithAccount { @Embedded lateinit var status: TimelineStatusEntity @Embedded(prefix = "a_") lateinit var account: TimelineAccountEntity @Embedded(prefix = "rb_") var reblogAccount: TimelineAccountEntity? = null }