Ensure we do not use QueryStringValue.NoCondition or QueryStringValue.IsNull to query for State Event.

Also remove default value for those parameters.

matrix-sdk-android-flow/src/main/java/org/matrix/android/sdk/flow/FlowRoom.kt

@@ -18,7 +18,7 @@ package org.matrix.android.sdk.flow
 
 import androidx.lifecycle.asFlow
 import kotlinx.coroutines.flow.Flow
-import org.matrix.android.sdk.api.query.QueryStringValue
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.room.Room
 import org.matrix.android.sdk.api.session.room.getStateEvent
@@ -67,17 +67,17 @@ class FlowRoom(private val room: Room) {
                 }
     }
 
-    fun liveStateEvent(eventType: String, stateKey: QueryStringValue): Flow<Optional<Event>> {
+    fun liveStateEvent(eventType: String, stateKey: QueryStateEventValue): Flow<Optional<Event>> {
         return room.stateService().getStateEventLive(eventType, stateKey).asFlow()
                 .startWith(room.coroutineDispatchers.io) {
                     room.getStateEvent(eventType, stateKey).toOptional()
                 }
     }
 
-    fun liveStateEvents(eventTypes: Set<String>): Flow<List<Event>> {
+    fun liveStateEvents(eventTypes: Set<String>, stateKey: QueryStateEventValue): Flow<List<Event>> {
-        return room.stateService().getStateEventsLive(eventTypes).asFlow()
+        return room.stateService().getStateEventsLive(eventTypes, stateKey).asFlow()
                 .startWith(room.coroutineDispatchers.io) {
-                    room.stateService().getStateEvents(eventTypes)
+                    room.stateService().getStateEvents(eventTypes, stateKey)
                 }
     }
 

matrix-sdk-android-flow/src/main/java/org/matrix/android/sdk/flow/FlowSession.kt

@@ -19,7 +19,7 @@ package org.matrix.android.sdk.flow
 import androidx.lifecycle.asFlow
 import androidx.paging.PagedList
 import kotlinx.coroutines.flow.Flow
-import org.matrix.android.sdk.api.query.QueryStringValue
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.accountdata.UserAccountDataEvent
 import org.matrix.android.sdk.api.session.crypto.crosssigning.MXCrossSigningInfo
@@ -179,7 +179,7 @@ class FlowSession(private val session: Session) {
 
     fun liveRoomWidgets(
             roomId: String,
-            widgetId: QueryStringValue,
+            widgetId: QueryStateEventValue,
             widgetTypes: Set<String>? = null,
             excludedTypes: Set<String>? = null
     ): Flow<List<Widget>> {

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/query/QueryStringValue.kt

@@ -16,6 +16,11 @@
 
 package org.matrix.android.sdk.api.query
 
+/**
+ * Only a subset of [QueryStringValue] are applicable to query the `stateKey` of a state event.
+ */
+sealed interface QueryStateEventValue
+
 /**
  * Basic query language. All these cases are mutually exclusive.
  */
@@ -33,22 +38,22 @@ sealed interface QueryStringValue {
     /**
      * The tested field has to be not null.
      */
-    object IsNotNull : QueryStringValue
+    object IsNotNull : QueryStringValue, QueryStateEventValue
 
     /**
      * The tested field has to be empty.
      */
-    object IsEmpty : QueryStringValue
+    object IsEmpty : QueryStringValue, QueryStateEventValue
 
     /**
-     * The tested field has to not empty.
+     * The tested field has to be not empty.
      */
-    object IsNotEmpty : QueryStringValue
+    object IsNotEmpty : QueryStringValue, QueryStateEventValue
 
     /**
      * Interface to check String content.
      */
-    sealed interface ContentQueryStringValue : QueryStringValue {
+    sealed interface ContentQueryStringValue : QueryStringValue, QueryStateEventValue {
         val string: String
         val case: Case
     }

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/RoomExtensions.kt

@@ -16,18 +16,21 @@
 
 package org.matrix.android.sdk.api.session.room
 
-import org.matrix.android.sdk.api.query.QueryStringValue
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.room.timeline.TimelineEvent
 
 /**
  * Get a TimelineEvent using the TimelineService of a Room.
+ * @param eventId The id of the event to retrieve
  */
 fun Room.getTimelineEvent(eventId: String): TimelineEvent? =
         timelineService().getTimelineEvent(eventId)
 
 /**
  * Get a StateEvent using the StateService of a Room.
+ * @param eventType The type of the event, see [org.matrix.android.sdk.api.session.events.model.EventType].
+ * @param stateKey the query which will be done on the stateKey.
  */
-fun Room.getStateEvent(eventType: String, stateKey: QueryStringValue = QueryStringValue.NoCondition): Event? =
+fun Room.getStateEvent(eventType: String, stateKey: QueryStateEventValue): Event? =
         stateService().getStateEvent(eventType, stateKey)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/state/StateService.kt

@@ -18,7 +18,7 @@ package org.matrix.android.sdk.api.session.room.state
 
 import android.net.Uri
 import androidx.lifecycle.LiveData
-import org.matrix.android.sdk.api.query.QueryStringValue
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.room.model.GuestAccess
 import org.matrix.android.sdk.api.session.room.model.RoomHistoryVisibility
@@ -93,28 +93,28 @@ interface StateService {
      * @param eventType An eventType.
      * @param stateKey the query which will be done on the stateKey
      */
-    fun getStateEvent(eventType: String, stateKey: QueryStringValue = QueryStringValue.NoCondition): Event?
+    fun getStateEvent(eventType: String, stateKey: QueryStateEventValue): Event?
 
     /**
      * Get a live state event of the room.
      * @param eventType An eventType.
      * @param stateKey the query which will be done on the stateKey
      */
-    fun getStateEventLive(eventType: String, stateKey: QueryStringValue = QueryStringValue.NoCondition): LiveData<Optional<Event>>
+    fun getStateEventLive(eventType: String, stateKey: QueryStateEventValue): LiveData<Optional<Event>>
 
     /**
      * Get state events of the room.
      * @param eventTypes Set of eventType. If empty, all state events will be returned
      * @param stateKey the query which will be done on the stateKey
      */
-    fun getStateEvents(eventTypes: Set<String>, stateKey: QueryStringValue = QueryStringValue.NoCondition): List<Event>
+    fun getStateEvents(eventTypes: Set<String>, stateKey: QueryStateEventValue): List<Event>
 
     /**
      * Get live state events of the room.
      * @param eventTypes Set of eventType to observe. If empty, all state events will be observed
      * @param stateKey the query which will be done on the stateKey
      */
-    fun getStateEventsLive(eventTypes: Set<String>, stateKey: QueryStringValue = QueryStringValue.NoCondition): LiveData<List<Event>>
+    fun getStateEventsLive(eventTypes: Set<String>, stateKey: QueryStateEventValue): LiveData<List<Event>>
 
     suspend fun setJoinRulePublic()
     suspend fun setJoinRuleInviteOnly()

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/state/StateServiceExtension.kt

@@ -26,7 +26,7 @@ import org.matrix.android.sdk.api.session.room.model.RoomJoinRulesContent
  * Return true if a room can be joined by anyone (RoomJoinRules.PUBLIC).
  */
 fun StateService.isPublic(): Boolean {
-    return getStateEvent(EventType.STATE_ROOM_JOIN_RULES, QueryStringValue.NoCondition)
+    return getStateEvent(EventType.STATE_ROOM_JOIN_RULES, QueryStringValue.IsEmpty)
             ?.content
             ?.toModel<RoomJoinRulesContent>()
             ?.joinRules == RoomJoinRules.PUBLIC

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/widgets/WidgetService.kt

@@ -17,7 +17,7 @@
 package org.matrix.android.sdk.api.session.widgets
 
 import androidx.lifecycle.LiveData
-import org.matrix.android.sdk.api.query.QueryStringValue
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.session.events.model.Content
 import org.matrix.android.sdk.api.session.widgets.model.Widget
 
@@ -49,7 +49,7 @@ interface WidgetService {
      */
     fun getRoomWidgets(
             roomId: String,
-            widgetId: QueryStringValue = QueryStringValue.NoCondition,
+            widgetId: QueryStateEventValue,
             widgetTypes: Set<String>? = null,
             excludedTypes: Set<String>? = null
     ): List<Widget>
@@ -70,7 +70,7 @@ interface WidgetService {
      */
     fun getRoomWidgetsLive(
             roomId: String,
-            widgetId: QueryStringValue = QueryStringValue.NoCondition,
+            widgetId: QueryStateEventValue,
             widgetTypes: Set<String>? = null,
             excludedTypes: Set<String>? = null
     ): LiveData<List<Widget>>

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/permalinks/ViaParameterFinder.kt

@@ -101,7 +101,7 @@ internal class ViaParameterFinder @Inject constructor(
     }
 
     fun userCanInvite(userId: String, roomId: String): Boolean {
-        val powerLevelsHelper = stateEventDataSource.getStateEvent(roomId, EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.NoCondition)
+        val powerLevelsHelper = stateEventDataSource.getStateEvent(roomId, EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
                 ?.content?.toModel<PowerLevelsContent>()
                 ?.let { PowerLevelsHelper(it) }
 

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/pushers/DefaultConditionResolver.kt

@@ -15,6 +15,7 @@
  */
 package org.matrix.android.sdk.internal.session.pushers
 
+import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.events.model.EventType
 import org.matrix.android.sdk.api.session.events.model.toModel
@@ -55,7 +56,7 @@ internal class DefaultConditionResolver @Inject constructor(
         val roomId = event.roomId ?: return false
         val room = roomGetter.getRoom(roomId) ?: return false
 
-        val powerLevelsContent = room.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS)
+        val powerLevelsContent = room.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
                 ?.content
                 ?.toModel<PowerLevelsContent>()
                 ?: PowerLevelsContent()

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/EventRelationsAggregationProcessor.kt

@@ -386,7 +386,7 @@ internal class EventRelationsAggregationProcessor @Inject constructor(
     }
 
     private fun getPowerLevelsHelper(roomId: String): PowerLevelsHelper? {
-        return stateEventDataSource.getStateEvent(roomId, EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.NoCondition)
+        return stateEventDataSource.getStateEvent(roomId, EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
                 ?.content?.toModel<PowerLevelsContent>()
                 ?.let { PowerLevelsHelper(it) }
     }

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/membership/leaving/LeaveRoomTask.kt

@@ -60,7 +60,7 @@ internal class DefaultLeaveRoomTask @Inject constructor(
         val roomCreateStateEvent = stateEventDataSource.getStateEvent(
                 roomId = roomId,
                 eventType = EventType.STATE_ROOM_CREATE,
-                stateKey = QueryStringValue.NoCondition
+                stateKey = QueryStringValue.IsEmpty,
         )
         // Server is not cleaning predecessor rooms, so we also try to left them
         val predecessorRoomId = roomCreateStateEvent?.getClearContent()?.toModel<RoomCreateContent>()?.predecessor?.roomId

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/state/DefaultStateService.kt

@@ -22,6 +22,7 @@ import dagger.assisted.Assisted
 import dagger.assisted.AssistedFactory
 import dagger.assisted.AssistedInject
 import org.matrix.android.sdk.api.extensions.orFalse
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.events.model.EventType
@@ -54,19 +55,19 @@ internal class DefaultStateService @AssistedInject constructor(
         fun create(roomId: String): DefaultStateService
     }
 
-    override fun getStateEvent(eventType: String, stateKey: QueryStringValue): Event? {
+    override fun getStateEvent(eventType: String, stateKey: QueryStateEventValue): Event? {
         return stateEventDataSource.getStateEvent(roomId, eventType, stateKey)
     }
 
-    override fun getStateEventLive(eventType: String, stateKey: QueryStringValue): LiveData<Optional<Event>> {
+    override fun getStateEventLive(eventType: String, stateKey: QueryStateEventValue): LiveData<Optional<Event>> {
         return stateEventDataSource.getStateEventLive(roomId, eventType, stateKey)
     }
 
-    override fun getStateEvents(eventTypes: Set<String>, stateKey: QueryStringValue): List<Event> {
+    override fun getStateEvents(eventTypes: Set<String>, stateKey: QueryStateEventValue): List<Event> {
         return stateEventDataSource.getStateEvents(roomId, eventTypes, stateKey)
     }
 
-    override fun getStateEventsLive(eventTypes: Set<String>, stateKey: QueryStringValue): LiveData<List<Event>> {
+    override fun getStateEventsLive(eventTypes: Set<String>, stateKey: QueryStateEventValue): LiveData<List<Event>> {
         return stateEventDataSource.getStateEventsLive(roomId, eventTypes, stateKey)
     }
 

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/state/StateEventDataSource.kt

@@ -22,6 +22,7 @@ import com.zhuinden.monarchy.Monarchy
 import io.realm.Realm
 import io.realm.RealmQuery
 import io.realm.kotlin.where
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.util.Optional
@@ -40,13 +41,13 @@ internal class StateEventDataSource @Inject constructor(
         private val queryStringValueProcessor: QueryStringValueProcessor
 ) {
 
-    fun getStateEvent(roomId: String, eventType: String, stateKey: QueryStringValue): Event? {
+    fun getStateEvent(roomId: String, eventType: String, stateKey: QueryStateEventValue): Event? {
         return realmSessionProvider.withRealm { realm ->
             buildStateEventQuery(realm, roomId, setOf(eventType), stateKey).findFirst()?.root?.asDomain()
         }
     }
 
-    fun getStateEventLive(roomId: String, eventType: String, stateKey: QueryStringValue): LiveData<Optional<Event>> {
+    fun getStateEventLive(roomId: String, eventType: String, stateKey: QueryStateEventValue): LiveData<Optional<Event>> {
         val liveData = monarchy.findAllMappedWithChanges(
                 { realm -> buildStateEventQuery(realm, roomId, setOf(eventType), stateKey) },
                 { it.root?.asDomain() }
@@ -56,7 +57,7 @@ internal class StateEventDataSource @Inject constructor(
         }
     }
 
-    fun getStateEvents(roomId: String, eventTypes: Set<String>, stateKey: QueryStringValue): List<Event> {
+    fun getStateEvents(roomId: String, eventTypes: Set<String>, stateKey: QueryStateEventValue): List<Event> {
         return realmSessionProvider.withRealm { realm ->
             buildStateEventQuery(realm, roomId, eventTypes, stateKey)
                     .findAll()
@@ -66,7 +67,7 @@ internal class StateEventDataSource @Inject constructor(
         }
     }
 
-    fun getStateEventsLive(roomId: String, eventTypes: Set<String>, stateKey: QueryStringValue): LiveData<List<Event>> {
+    fun getStateEventsLive(roomId: String, eventTypes: Set<String>, stateKey: QueryStateEventValue): LiveData<List<Event>> {
         val liveData = monarchy.findAllMappedWithChanges(
                 { realm -> buildStateEventQuery(realm, roomId, eventTypes, stateKey) },
                 { it.root?.asDomain() }
@@ -80,7 +81,7 @@ internal class StateEventDataSource @Inject constructor(
             realm: Realm,
             roomId: String,
             eventTypes: Set<String>,
-            stateKey: QueryStringValue
+            stateKey: QueryStateEventValue
     ): RealmQuery<CurrentStateEventEntity> {
         return with(queryStringValueProcessor) {
             realm.where<CurrentStateEventEntity>()
@@ -90,7 +91,8 @@ internal class StateEventDataSource @Inject constructor(
                             `in`(CurrentStateEventEntityFields.TYPE, eventTypes.toTypedArray())
                         }
                     }
-                    .process(CurrentStateEventEntityFields.STATE_KEY, stateKey)
+                    // It's OK to cast stateKey as QueryStringValue
+                    .process(CurrentStateEventEntityFields.STATE_KEY, stateKey as QueryStringValue)
         }
     }
 }

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/LiveRoomStateListener.kt

@@ -46,7 +46,7 @@ internal class LiveRoomStateListener(
         stateEventDataSource.getStateEventsLive(
                 roomId = roomId,
                 eventTypes = setOf(EventType.STATE_ROOM_MEMBER),
-                stateKey = QueryStringValue.NoCondition,
+                stateKey = QueryStringValue.IsNotNull,
         )
     }
 

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/version/DefaultRoomVersionService.kt

@@ -71,7 +71,7 @@ internal class DefaultRoomVersionService @AssistedInject constructor(
     }
 
     override fun userMayUpgradeRoom(userId: String): Boolean {
-        val powerLevelsHelper = stateEventDataSource.getStateEvent(roomId, EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.NoCondition)
+        val powerLevelsHelper = stateEventDataSource.getStateEvent(roomId, EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
                 ?.content?.toModel<PowerLevelsContent>()
                 ?.let { PowerLevelsHelper(it) }
 

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/space/DefaultSpaceService.kt

@@ -252,7 +252,7 @@ internal class DefaultSpaceService @Inject constructor(
             val powerLevelsEvent = stateEventDataSource.getStateEvent(
                     roomId = parentSpaceId,
                     eventType = EventType.STATE_ROOM_POWER_LEVELS,
-                    stateKey = QueryStringValue.NoCondition
+                    stateKey = QueryStringValue.IsEmpty
             )
             val powerLevelsContent = powerLevelsEvent?.content?.toModel<PowerLevelsContent>()
                     ?: throw UnsupportedOperationException("Cannot add canonical child, missing powerlevel")

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/widgets/DefaultWidgetService.kt

@@ -17,7 +17,7 @@
 package org.matrix.android.sdk.internal.session.widgets
 
 import androidx.lifecycle.LiveData
-import org.matrix.android.sdk.api.query.QueryStringValue
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.session.events.model.Content
 import org.matrix.android.sdk.api.session.widgets.WidgetPostAPIMediator
 import org.matrix.android.sdk.api.session.widgets.WidgetService
@@ -43,7 +43,7 @@ internal class DefaultWidgetService @Inject constructor(
 
     override fun getRoomWidgets(
             roomId: String,
-            widgetId: QueryStringValue,
+            widgetId: QueryStateEventValue,
             widgetTypes: Set<String>?,
             excludedTypes: Set<String>?
     ): List<Widget> {
@@ -56,7 +56,7 @@ internal class DefaultWidgetService @Inject constructor(
 
     override fun getRoomWidgetsLive(
             roomId: String,
-            widgetId: QueryStringValue,
+            widgetId: QueryStateEventValue,
             widgetTypes: Set<String>?,
             excludedTypes: Set<String>?
     ): LiveData<List<Widget>> {

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/widgets/WidgetManager.kt

@@ -21,6 +21,7 @@ import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.LifecycleRegistry
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Transformations
+import org.matrix.android.sdk.api.query.QueryStateEventValue
 import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.SessionLifecycleObserver
@@ -71,7 +72,7 @@ internal class WidgetManager @Inject constructor(
 
     fun getRoomWidgetsLive(
             roomId: String,
-            widgetId: QueryStringValue = QueryStringValue.NoCondition,
+            widgetId: QueryStateEventValue,
             widgetTypes: Set<String>? = null,
             excludedTypes: Set<String>? = null
     ): LiveData<List<Widget>> {
@@ -88,7 +89,7 @@ internal class WidgetManager @Inject constructor(
 
     fun getRoomWidgets(
             roomId: String,
-            widgetId: QueryStringValue = QueryStringValue.NoCondition,
+            widgetId: QueryStateEventValue,
             widgetTypes: Set<String>? = null,
             excludedTypes: Set<String>? = null
     ): List<Widget> {
@@ -199,7 +200,7 @@ internal class WidgetManager @Inject constructor(
         val powerLevelsEvent = stateEventDataSource.getStateEvent(
                 roomId = roomId,
                 eventType = EventType.STATE_ROOM_POWER_LEVELS,
-                stateKey = QueryStringValue.NoCondition
+                stateKey = QueryStringValue.IsEmpty
         )
         val powerLevelsContent = powerLevelsEvent?.content?.toModel<PowerLevelsContent>() ?: return false
         return PowerLevelsHelper(powerLevelsContent).isUserAllowedToSend(userId, true, EventType.STATE_ROOM_WIDGET_LEGACY)

vector/src/main/java/im/vector/app/features/devtools/RoomDevToolViewModel.kt

@@ -32,6 +32,7 @@ import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.core.resources.StringProvider
 import kotlinx.coroutines.launch
 import org.json.JSONObject
+import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.events.model.EventType
@@ -59,7 +60,7 @@ class RoomDevToolViewModel @AssistedInject constructor(
     init {
         session.getRoom(initialState.roomId)
                 ?.flow()
-                ?.liveStateEvents(emptySet())
+                ?.liveStateEvents(emptySet(), QueryStringValue.IsNotNull)
                 ?.execute { async ->
                     copy(stateEvents = async)
                 }

vector/src/main/java/im/vector/app/features/home/room/detail/TimelineViewModel.kt

@@ -294,7 +294,7 @@ class TimelineViewModel @AssistedInject constructor(
         session.flow()
                 .liveRoomWidgets(
                         roomId = initialState.roomId,
-                        widgetId = QueryStringValue.NoCondition
+                        widgetId = QueryStringValue.IsNotNull
                 )
                 .map { widgets ->
                     widgets.filter { it.isActive }
@@ -1239,7 +1239,7 @@ class TimelineViewModel @AssistedInject constructor(
                     setState { copy(asyncInviter = Success(it)) }
                 }
             }
-            room.getStateEvent(EventType.STATE_ROOM_TOMBSTONE)?.also {
+            room.getStateEvent(EventType.STATE_ROOM_TOMBSTONE, QueryStringValue.IsEmpty)?.also {
                 setState { copy(tombstoneEvent = it) }
             }
         }

vector/src/main/java/im/vector/app/features/home/room/detail/composer/MessageComposerViewModel.kt

@@ -683,7 +683,7 @@ class MessageComposerViewModel @AssistedInject constructor(
     }
 
     private fun handleSetUserPowerLevel(setUserPowerLevel: ParsedCommand.SetUserPowerLevel) {
-        val newPowerLevelsContent = room.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS)
+        val newPowerLevelsContent = room.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
                 ?.content
                 ?.toModel<PowerLevelsContent>()
                 ?.setUserPowerLevel(setUserPowerLevel.userId, setUserPowerLevel.powerLevel)

vector/src/main/java/im/vector/app/features/home/room/detail/timeline/factory/MergedHeaderItemFactory.kt

@@ -222,7 +222,7 @@ class MergedHeaderItemFactory @Inject constructor(
             }
             val mergeId = mergedEventIds.joinToString(separator = "_") { it.toString() }
             val powerLevelsHelper = activeSessionHolder.getSafeActiveSession()?.getRoom(event.roomId)
-                    ?.let { it.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.NoCondition)?.content?.toModel<PowerLevelsContent>() }
+                    ?.let { it.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)?.content?.toModel<PowerLevelsContent>() }
                     ?.let { PowerLevelsHelper(it) }
             val currentUserId = activeSessionHolder.getSafeActiveSession()?.myUserId ?: ""
             val attributes = MergedRoomCreationItem.Attributes(

vector/src/main/java/im/vector/app/features/powerlevel/PowerLevelsFlowFactory.kt

@@ -32,7 +32,7 @@ class PowerLevelsFlowFactory(private val room: Room) {
 
     fun createFlow(): Flow<PowerLevelsContent> {
         return room.flow()
-                .liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.NoCondition)
+                .liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
                 .mapOptional { it.content.toModel<PowerLevelsContent>() }
                 .flowOn(Dispatchers.Default)
                 .unwrap()

vector/src/main/java/im/vector/app/features/roomprofile/RoomProfileViewModel.kt

@@ -91,7 +91,7 @@ class RoomProfileViewModel @AssistedInject constructor(
     }
 
     private fun observeRoomCreateContent(flowRoom: FlowRoom) {
-        flowRoom.liveStateEvent(EventType.STATE_ROOM_CREATE, QueryStringValue.NoCondition)
+        flowRoom.liveStateEvent(EventType.STATE_ROOM_CREATE, QueryStringValue.IsEmpty)
                 .mapOptional { it.content.toModel<RoomCreateContent>() }
                 .unwrap()
                 .execute { async ->
@@ -101,7 +101,7 @@ class RoomProfileViewModel @AssistedInject constructor(
                             recommendedRoomVersion = room.roomVersionService().getRecommendedVersion(),
                             isUsingUnstableRoomVersion = room.roomVersionService().isUsingUnstableRoomVersion(),
                             canUpgradeRoom = room.roomVersionService().userMayUpgradeRoom(session.myUserId),
-                            isTombstoned = room.getStateEvent(EventType.STATE_ROOM_TOMBSTONE) != null
+                            isTombstoned = room.getStateEvent(EventType.STATE_ROOM_TOMBSTONE, QueryStringValue.IsEmpty) != null
                     )
                 }
     }

vector/src/main/java/im/vector/app/features/roomprofile/alias/RoomAliasViewModel.kt

@@ -167,7 +167,7 @@ class RoomAliasViewModel @AssistedInject constructor(
      */
     private fun observeRoomCanonicalAlias() {
         room.flow()
-                .liveStateEvent(EventType.STATE_ROOM_CANONICAL_ALIAS, QueryStringValue.NoCondition)
+                .liveStateEvent(EventType.STATE_ROOM_CANONICAL_ALIAS, QueryStringValue.IsEmpty)
                 .mapOptional { it.content.toModel<RoomCanonicalAliasContent>() }
                 .unwrap()
                 .setOnEach {

vector/src/main/java/im/vector/app/features/roomprofile/members/RoomMemberListViewModel.kt

@@ -84,7 +84,7 @@ class RoomMemberListViewModel @AssistedInject constructor(
         combine(
                 room.flow().liveRoomMembers(roomMemberQueryParams),
                 room.flow()
-                        .liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.NoCondition)
+                        .liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
                         .mapOptional { it.content.toModel<PowerLevelsContent>() }
                         .unwrap()
         ) { roomMembers, powerLevelsContent ->
@@ -146,7 +146,8 @@ class RoomMemberListViewModel @AssistedInject constructor(
     }
 
     private fun observeThirdPartyInvites() {
-        room.flow().liveStateEvents(setOf(EventType.STATE_ROOM_THIRD_PARTY_INVITE))
+        room.flow()
+                .liveStateEvents(setOf(EventType.STATE_ROOM_THIRD_PARTY_INVITE), QueryStringValue.IsNotNull)
                 .execute { async ->
                     copy(threePidInvites = async)
                 }

vector/src/main/java/im/vector/app/features/roomprofile/settings/RoomSettingsViewModel.kt

@@ -158,7 +158,7 @@ class RoomSettingsViewModel @AssistedInject constructor(
 
     private fun observeRoomHistoryVisibility() {
         room.flow()
-                .liveStateEvent(EventType.STATE_ROOM_HISTORY_VISIBILITY, QueryStringValue.NoCondition)
+                .liveStateEvent(EventType.STATE_ROOM_HISTORY_VISIBILITY, QueryStringValue.IsEmpty)
                 .mapOptional { it.content.toModel<RoomHistoryVisibilityContent>() }
                 .unwrap()
                 .mapNotNull { it.historyVisibility }
@@ -169,7 +169,7 @@ class RoomSettingsViewModel @AssistedInject constructor(
 
     private fun observeJoinRule() {
         room.flow()
-                .liveStateEvent(EventType.STATE_ROOM_JOIN_RULES, QueryStringValue.NoCondition)
+                .liveStateEvent(EventType.STATE_ROOM_JOIN_RULES, QueryStringValue.IsEmpty)
                 .mapOptional { it.content.toModel<RoomJoinRulesContent>() }
                 .unwrap()
                 .mapNotNull { it.joinRules }
@@ -180,7 +180,7 @@ class RoomSettingsViewModel @AssistedInject constructor(
 
     private fun observeGuestAccess() {
         room.flow()
-                .liveStateEvent(EventType.STATE_ROOM_GUEST_ACCESS, QueryStringValue.NoCondition)
+                .liveStateEvent(EventType.STATE_ROOM_GUEST_ACCESS, QueryStringValue.IsEmpty)
                 .mapOptional { it.content.toModel<RoomGuestAccessContent>() }
                 .unwrap()
                 .mapNotNull { it.guestAccess }
@@ -194,7 +194,7 @@ class RoomSettingsViewModel @AssistedInject constructor(
      */
     private fun observeRoomAvatar() {
         room.flow()
-                .liveStateEvent(EventType.STATE_ROOM_AVATAR, QueryStringValue.NoCondition)
+                .liveStateEvent(EventType.STATE_ROOM_AVATAR, QueryStringValue.IsEmpty)
                 .mapOptional { it.content.toModel<RoomAvatarContent>() }
                 .unwrap()
                 .setOnEach {

vector/src/main/java/im/vector/app/features/roomprofile/settings/joinrule/advanced/RoomJoinRuleChooseRestrictedViewModel.kt

@@ -70,7 +70,7 @@ class RoomJoinRuleChooseRestrictedViewModel @AssistedInject constructor(
     private fun initializeForRoom(roomId: String) {
         room = session.getRoom(roomId)!!
         session.getRoomSummary(roomId)?.let { roomSummary ->
-            val joinRulesContent = room.getStateEvent(EventType.STATE_ROOM_JOIN_RULES, QueryStringValue.NoCondition)
+            val joinRulesContent = room.getStateEvent(EventType.STATE_ROOM_JOIN_RULES, QueryStringValue.IsEmpty)
                     ?.content
                     ?.toModel<RoomJoinRulesContent>()
             val initialAllowList = joinRulesContent?.allowList

vector/src/main/java/im/vector/app/features/spaces/leave/SpaceLeaveAdvancedViewModel.kt

@@ -33,6 +33,7 @@ import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import okhttp3.internal.toImmutableList
+import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.query.RoomCategoryFilter
 import org.matrix.android.sdk.api.query.SpaceFilter
 import org.matrix.android.sdk.api.session.Session
@@ -59,7 +60,7 @@ class SpaceLeaveAdvancedViewModel @AssistedInject constructor(
         val space = session.getRoom(initialState.spaceId)
         val spaceSummary = space?.roomSummary()
 
-        val powerLevelsEvent = space?.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS)
+        val powerLevelsEvent = space?.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
         powerLevelsEvent?.content?.toModel<PowerLevelsContent>()?.let { powerLevelsContent ->
             val powerLevelsHelper = PowerLevelsHelper(powerLevelsContent)
             val isAdmin = powerLevelsHelper.getUserRole(session.myUserId) is Role.Admin

vector/src/main/java/im/vector/app/features/widgets/WidgetPostAPIHandler.kt

@@ -121,7 +121,7 @@ class WidgetPostAPIHandler @AssistedInject constructor(
         }
         val userId = eventData["user_id"] as String
         Timber.d("Received request to get options for bot $userId in room $roomId requested")
-        val stateEvents = room.stateService().getStateEvents(setOf(EventType.BOT_OPTIONS))
+        val stateEvents = room.stateService().getStateEvents(setOf(EventType.BOT_OPTIONS), QueryStringValue.IsNotNull)
         var botOptionsEvent: Event? = null
         val stateKey = "_$userId"
         for (stateEvent in stateEvents) {
@@ -155,7 +155,7 @@ class WidgetPostAPIHandler @AssistedInject constructor(
 
         Timber.d("## canSendEvent() : eventType $eventType isState $isState")
 
-        val powerLevelsEvent = room.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS)
+        val powerLevelsEvent = room.getStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
         val powerLevelsContent = powerLevelsEvent?.content?.toModel<PowerLevelsContent>()
         val canSend = if (powerLevelsContent == null) {
             false
@@ -202,7 +202,7 @@ class WidgetPostAPIHandler @AssistedInject constructor(
             return
         }
         Timber.d("Received request join rules  in room $roomId")
-        val joinedEvents = room.stateService().getStateEvents(setOf(EventType.STATE_ROOM_JOIN_RULES))
+        val joinedEvents = room.stateService().getStateEvents(setOf(EventType.STATE_ROOM_JOIN_RULES), QueryStringValue.IsEmpty)
         if (joinedEvents.isNotEmpty()) {
             widgetPostAPIMediator.sendObjectResponse(Event::class.java, joinedEvents.last(), eventData)
         } else {
@@ -222,7 +222,7 @@ class WidgetPostAPIHandler @AssistedInject constructor(
         }
         Timber.d("Received request to get widget in room $roomId")
         val responseData = ArrayList<JsonDict>()
-        val allWidgets = session.widgetService().getRoomWidgets(roomId) + session.widgetService().getUserWidgets()
+        val allWidgets = session.widgetService().getRoomWidgets(roomId, QueryStringValue.IsNotNull) + session.widgetService().getUserWidgets()
         for (widget in allWidgets) {
             val map = widget.event.toContent()
             responseData.add(map)

vector/src/main/java/im/vector/app/features/widgets/WidgetViewModel.kt

@@ -111,7 +111,7 @@ class WidgetViewModel @AssistedInject constructor(
         if (room == null) {
             return
         }
-        room.flow().liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.NoCondition)
+        room.flow().liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, QueryStringValue.IsEmpty)
                 .mapOptional { it.content.toModel<PowerLevelsContent>() }
                 .unwrap()
                 .map {