Propagate UI changes

@@ -57,6 +57,14 @@ export class AppComponent implements OnInit {
         '0,10 0 0,1 2,12A10,10 0 0,1 12,2Z" /></svg>'
         '0,10 0 0,1 2,12A10,10 0 0,1 12,2Z" /></svg>'
       )
       )
     );
     );
+    this.matIconRegistry.addSvgIconLiteral(
+      'alpha-e-circle-outline',
+      this.domSanitizer.bypassSecurityTrustHtml(
+        '<svg viewBox="0 0 24 24"><path d="M9,7H15V9H11V11H15V13H11V15H15V17H9V7M12,2A10,10 0 0,'+
+        '1 22,12A10,10 0 0,1 12,22A10,10 0 0,1 2,12A10,10 0 0,1 12,2M12,4A8,8 0 ' +
+        '0,0 4,12A8,8 0 0,0 12,20A8,8 0 0,0 20,12A8,8 0 0,0 12,4Z" /></svg>'
+      )
+    );
 
 
     this.storageService.testLocalStorage();
     this.storageService.testLocalStorage();
 
 

@@ -50,6 +50,8 @@ import { AlarmSourceListener } from '@core/http/alarm.service';
 import { DatasourceListener } from '@core/api/datasource.service';
 import { DatasourceListener } from '@core/api/datasource.service';
 import * as deepEqual from 'deep-equal';
 import * as deepEqual from 'deep-equal';
 import { EntityId } from '@app/shared/models/id/entity-id';
 import { EntityId } from '@app/shared/models/id/entity-id';
+import { DataKeyType } from '@shared/models/telemetry/telemetry.models';
+import { entityFields } from '@shared/models/entity.models';
 
 
 export class WidgetSubscription implements IWidgetSubscription {
 export class WidgetSubscription implements IWidgetSubscription {
 
 
@@ -342,6 +344,12 @@ export class WidgetSubscription implements IWidgetSubscription {
           dataKey,
           dataKey,
           data: []
           data: []
         };
         };
+        if (dataKey.type === DataKeyType.entityField && datasource.entity) {
+          const propName = entityFields[dataKey.name] ? entityFields[dataKey.name].value : dataKey.name;
+          if (datasource.entity[propName]) {
+            datasourceData.data.push([Date.now(), datasource.entity[propName]]);
+          }
+        }
         this.data.push(datasourceData);
         this.data.push(datasourceData);
         this.hiddenData.push({data: []});
         this.hiddenData.push({data: []});
         if (this.displayLegend) {
         if (this.displayLegend) {
@@ -682,8 +690,15 @@ export class WidgetSubscription implements IWidgetSubscription {
           },
           },
           datasourceIndex: index
           datasourceIndex: index
         };
         };
+
+        let entityFieldKey = false;
+
         for (let a = 0; a < datasource.dataKeys.length; a++) {
         for (let a = 0; a < datasource.dataKeys.length; a++) {
-          this.data[index + a].data = [];
+          if (datasource.dataKeys[a].type !== DataKeyType.entityField) {
+            this.data[index + a].data = [];
+          } else {
+            entityFieldKey = true;
+          }
         }
         }
         index += datasource.dataKeys.length;
         index += datasource.dataKeys.length;
         this.datasourceListeners.push(listener);
         this.datasourceListeners.push(listener);
@@ -691,7 +706,7 @@ export class WidgetSubscription implements IWidgetSubscription {
         if (datasource.dataKeys.length) {
         if (datasource.dataKeys.length) {
           this.ctx.datasourceService.subscribeToDatasource(listener);
           this.ctx.datasourceService.subscribeToDatasource(listener);
         }
         }
-        if (datasource.unresolvedStateEntity ||
+        if (datasource.unresolvedStateEntity || entityFieldKey ||
           !datasource.dataKeys.length ||
           !datasource.dataKeys.length ||
           (datasource.type === DatasourceType.entity && !datasource.entityId)
           (datasource.type === DatasourceType.entity && !datasource.entityId)
         ) {
         ) {

@@ -45,11 +45,11 @@ export class AttributeService {
       defaultHttpOptionsFromConfig(config));
       defaultHttpOptionsFromConfig(config));
   }
   }
 
 
-  public deleteEntityTimeseries(entityId: EntityId, timeseries: Array<AttributeData>,
+  public deleteEntityTimeseries(entityId: EntityId, timeseries: Array<AttributeData>, deleteAllDataForKeys = false,
                                 config?: RequestConfig): Observable<any> {
                                 config?: RequestConfig): Observable<any> {
     const keys = timeseries.map(attribute => attribute.key).join(',');
     const keys = timeseries.map(attribute => attribute.key).join(',');
     return this.http.delete(`/api/plugins/telemetry/${entityId.entityType}/${entityId.id}/timeseries/delete` +
     return this.http.delete(`/api/plugins/telemetry/${entityId.entityType}/${entityId.id}/timeseries/delete` +
-      `?keys=${keys}`,
+      `?keys=${keys}&deleteAllDataForKeys=${deleteAllDataForKeys}`,
       defaultHttpOptionsFromConfig(config));
       defaultHttpOptionsFromConfig(config));
   }
   }
 
 
@@ -93,7 +93,7 @@ export class AttributeService {
     });
     });
     let deleteEntityTimeseriesObservable: Observable<any>;
     let deleteEntityTimeseriesObservable: Observable<any>;
     if (deleteTimeseries.length) {
     if (deleteTimeseries.length) {
-      deleteEntityTimeseriesObservable = this.deleteEntityTimeseries(entityId, deleteTimeseries, config);
+      deleteEntityTimeseriesObservable = this.deleteEntityTimeseries(entityId, deleteTimeseries, true, config);
     } else {
     } else {
       deleteEntityTimeseriesObservable = of(null);
       deleteEntityTimeseriesObservable = of(null);
     }
     }

@@ -20,7 +20,13 @@ import { Observable, ReplaySubject } from 'rxjs';
 import { HttpClient } from '@angular/common/http';
 import { HttpClient } from '@angular/common/http';
 import { PageLink } from '@shared/models/page/page-link';
 import { PageLink } from '@shared/models/page/page-link';
 import { PageData } from '@shared/models/page/page-data';
 import { PageData } from '@shared/models/page/page-data';
-import { Device, DeviceCredentials, DeviceInfo, DeviceSearchQuery } from '@app/shared/models/device.models';
+import {
+  ClaimRequest, ClaimResult,
+  Device,
+  DeviceCredentials,
+  DeviceInfo,
+  DeviceSearchQuery
+} from '@app/shared/models/device.models';
 import { EntitySubtype } from '@app/shared/models/entity-type.models';
 import { EntitySubtype } from '@app/shared/models/entity-type.models';
 import { AuthService } from '@core/auth/auth.service';
 import { AuthService } from '@core/auth/auth.service';
 
 
@@ -127,4 +133,13 @@ export class DeviceService {
     return this.http.get<Device>(`/api/tenant/devices?deviceName=${deviceName}`, defaultHttpOptionsFromConfig(config));
     return this.http.get<Device>(`/api/tenant/devices?deviceName=${deviceName}`, defaultHttpOptionsFromConfig(config));
   }
   }
 
 
+  public claimDevice(deviceName: string, claimRequest: ClaimRequest,
+                     config?: RequestConfig): Observable<ClaimResult> {
+    return this.http.post<ClaimResult>(`api/customer/device/${deviceName}/claim`, claimRequest, defaultHttpOptionsFromConfig(config));
+  }
+
+  public unclaimDevice(deviceName: string, config?: RequestConfig) {
+    return this.http.delete(`/api/customer/device/${deviceName}/claim`, defaultHttpOptionsFromConfig(config));
+  }
+
 }
 }

@@ -44,7 +44,7 @@ import { AliasInfo, StateParams, SubscriptionInfo } from '@core/api/widget-api.m
 import { Datasource, DatasourceType, KeyInfo } from '@app/shared/models/widget.models';
 import { Datasource, DatasourceType, KeyInfo } from '@app/shared/models/widget.models';
 import { UtilsService } from '@core/services/utils.service';
 import { UtilsService } from '@core/services/utils.service';
 import { AliasFilterType, EntityAlias, EntityAliasFilter, EntityAliasFilterResult } from '@shared/models/alias.models';
 import { AliasFilterType, EntityAlias, EntityAliasFilter, EntityAliasFilterResult } from '@shared/models/alias.models';
-import { EntityInfo, ImportEntitiesResultInfo, ImportEntityData } from '@shared/models/entity.models';
+import { entityFields, EntityInfo, ImportEntitiesResultInfo, ImportEntityData } from '@shared/models/entity.models';
 import {
 import {
   EntityRelationInfo,
   EntityRelationInfo,
   EntityRelationsQuery,
   EntityRelationsQuery,
@@ -503,8 +503,50 @@ export class EntityService {
     return entityTypes;
     return entityTypes;
   }
   }
 
 
+  private getEntityFieldKeys (entityType: EntityType, searchText: string): Array<string> {
+    const entityFieldKeys: string[] = [];
+    const query = searchText.toLowerCase();
+    switch(entityType) {
+      case EntityType.USER:
+        entityFieldKeys.push(entityFields.name.keyName);
+        entityFieldKeys.push(entityFields.email.keyName);
+        entityFieldKeys.push(entityFields.firstName.keyName);
+        entityFieldKeys.push(entityFields.lastName.keyName);
+        break;
+      case EntityType.TENANT:
+      case EntityType.CUSTOMER:
+        entityFieldKeys.push(entityFields.title.keyName);
+        entityFieldKeys.push(entityFields.email.keyName);
+        entityFieldKeys.push(entityFields.country.keyName);
+        entityFieldKeys.push(entityFields.state.keyName);
+        entityFieldKeys.push(entityFields.city.keyName);
+        entityFieldKeys.push(entityFields.address.keyName);
+        entityFieldKeys.push(entityFields.address2.keyName);
+        entityFieldKeys.push(entityFields.zip.keyName);
+        entityFieldKeys.push(entityFields.phone.keyName);
+        break;
+      case EntityType.ENTITY_VIEW:
+        entityFieldKeys.push(entityFields.name.keyName);
+        entityFieldKeys.push(entityFields.type.keyName);
+        break;
+      case EntityType.DEVICE:
+      case EntityType.ASSET:
+        entityFieldKeys.push(entityFields.name.keyName);
+        entityFieldKeys.push(entityFields.type.keyName);
+        entityFieldKeys.push(entityFields.label.keyName);
+        break;
+      case EntityType.DASHBOARD:
+        entityFieldKeys.push(entityFields.title.keyName);
+        break;
+    }
+    return query ? entityFieldKeys.filter((entityField) => entityField.toLowerCase().indexOf(query) === 0) : entityFieldKeys;
+  }
+
   public getEntityKeys(entityId: EntityId, query: string, type: DataKeyType,
   public getEntityKeys(entityId: EntityId, query: string, type: DataKeyType,
                        config?: RequestConfig): Observable<Array<string>> {
                        config?: RequestConfig): Observable<Array<string>> {
+    if (type === DataKeyType.entityField) {
+      return of(this.getEntityFieldKeys(entityId.entityType as EntityType, query));
+    }
     let url = `/api/plugins/telemetry/${entityId.entityType}/${entityId.id}/keys/`;
     let url = `/api/plugins/telemetry/${entityId.entityType}/${entityId.id}/keys/`;
     if (type === DataKeyType.timeseries) {
     if (type === DataKeyType.timeseries) {
       url += 'timeseries';
       url += 'timeseries';
@@ -588,7 +630,8 @@ export class EntityService {
     if (filter.stateEntityParamName && filter.stateEntityParamName.length) {
     if (filter.stateEntityParamName && filter.stateEntityParamName.length) {
       result.entityParamName = filter.stateEntityParamName;
       result.entityParamName = filter.stateEntityParamName;
     }
     }
-    const stateEntityId = this.getStateEntityId(filter, stateParams);
+    const stateEntityInfo = this.getStateEntityInfo(filter, stateParams);
+    const stateEntityId = stateEntityInfo.entityId;
     switch (filter.type) {
     switch (filter.type) {
       case AliasFilterType.singleEntity:
       case AliasFilterType.singleEntity:
         const aliasEntityId = this.resolveAliasEntityId(filter.singleEntity.entityType, filter.singleEntity.id);
         const aliasEntityId = this.resolveAliasEntityId(filter.singleEntity.entityType, filter.singleEntity.id);
@@ -697,7 +740,8 @@ export class EntityService {
             parameters: {
             parameters: {
               rootId: relationQueryRootEntityId.id,
               rootId: relationQueryRootEntityId.id,
               rootType: relationQueryRootEntityId.entityType as EntityType,
               rootType: relationQueryRootEntityId.entityType as EntityType,
-              direction: filter.direction
+              direction: filter.direction,
+              fetchLastLevelOnly: filter.fetchLastLevelOnly
             },
             },
             filters: filter.filters
             filters: filter.filters
           };
           };
@@ -741,10 +785,12 @@ export class EntityService {
             parameters: {
             parameters: {
               rootId: searchQueryRootEntityId.id,
               rootId: searchQueryRootEntityId.id,
               rootType: searchQueryRootEntityId.entityType as EntityType,
               rootType: searchQueryRootEntityId.entityType as EntityType,
-              direction: filter.direction
+              direction: filter.direction,
+              fetchLastLevelOnly: filter.fetchLastLevelOnly
             },
             },
             relationType: filter.relationType
             relationType: filter.relationType
           };
           };
+          searchQuery.parameters.maxLevel = filter.maxLevel && filter.maxLevel > 0 ? filter.maxLevel : -1;
           let findByQueryObservable: Observable<Array<BaseData<EntityId>>>;
           let findByQueryObservable: Observable<Array<BaseData<EntityId>>>;
           if (filter.type === AliasFilterType.assetSearchQuery) {
           if (filter.type === AliasFilterType.assetSearchQuery) {
             const assetSearchQuery = searchQuery as AssetSearchQuery;
             const assetSearchQuery = searchQuery as AssetSearchQuery;
@@ -988,8 +1034,8 @@ export class EntityService {
     );
     );
   }
   }
 
 
-  private getStateEntityId(filter: EntityAliasFilter, stateParams: StateParams): EntityId {
-    let entityId = null;
+  private getStateEntityInfo(filter: EntityAliasFilter, stateParams: StateParams): {entityId: EntityId} {
+    let entityId: EntityId = null;
     if (stateParams) {
     if (stateParams) {
       if (filter.stateEntityParamName && filter.stateEntityParamName.length) {
       if (filter.stateEntityParamName && filter.stateEntityParamName.length) {
         if (stateParams[filter.stateEntityParamName]) {
         if (stateParams[filter.stateEntityParamName]) {
@@ -1005,7 +1051,7 @@ export class EntityService {
     if (entityId) {
     if (entityId) {
       entityId = this.resolveAliasEntityId(entityId.entityType, entityId.id);
       entityId = this.resolveAliasEntityId(entityId.entityType, entityId.id);
     }
     }
-    return entityId;
+    return {entityId};
   }
   }
 
 
   private resolveAliasEntityId(entityType: EntityType | AliasEntityType, id: string): EntityId {
   private resolveAliasEntityId(entityType: EntityType | AliasEntityType, id: string): EntityId {

@@ -133,6 +133,14 @@
             </tb-entity-select>
             </tb-entity-select>
           </div>
           </div>
         </div>
         </div>
+        <div fxFlex fxLayout="row">
+          <section class="tb-root-state-entity-switch" fxLayout="row" fxLayoutAlign="start center" style="padding-left: 0px;">
+            <mat-slide-toggle class="root-state-entity-switch"
+                              formControlName="fetchLastLevelOnly">
+            </mat-slide-toggle>
+            <label class="tb-small root-state-entity-label" translate>alias.last-level-relation</label>
+          </section>
+        </div>
         <div fxFlex fxLayoutGap="8px" fxLayout="row">
         <div fxFlex fxLayoutGap="8px" fxLayout="row">
           <mat-form-field class="mat-block" style="min-width: 100px;">
           <mat-form-field class="mat-block" style="min-width: 100px;">
             <mat-label translate>relation.direction</mat-label>
             <mat-label translate>relation.direction</mat-label>
@@ -191,6 +199,14 @@
           </tb-entity-select>
           </tb-entity-select>
         </div>
         </div>
       </div>
       </div>
+      <div fxFlex fxLayout="row">
+        <section class="tb-root-state-entity-switch" fxLayout="row" fxLayoutAlign="start center" style="padding-left: 0px;">
+          <mat-slide-toggle class="root-state-entity-switch"
+                            formControlName="fetchLastLevelOnly">
+          </mat-slide-toggle>
+          <label class="tb-small root-state-entity-label" translate>alias.last-level-relation</label>
+        </section>
+      </div>
       <div fxFlex fxLayoutGap="8px" fxLayout="row">
       <div fxFlex fxLayoutGap="8px" fxLayout="row">
         <mat-form-field class="mat-block" style="min-width: 100px;">
         <mat-form-field class="mat-block" style="min-width: 100px;">
           <mat-label translate>relation.direction</mat-label>
           <mat-label translate>relation.direction</mat-label>

@@ -25,6 +25,7 @@
 
 
     .tb-root-state-entity-switch {
     .tb-root-state-entity-switch {
       padding-left: 10px;
       padding-left: 10px;
+      padding-bottom: 10px;
 
 
       .root-state-entity-switch {
       .root-state-entity-switch {
         margin: 0;
         margin: 0;

@@ -165,6 +165,7 @@ export class EntityFilterComponent implements ControlValueAccessor, OnInit {
           rootEntity: [filter ? filter.rootEntity : null, (filter && filter.rootStateEntity) ? [] : [Validators.required]],
           rootEntity: [filter ? filter.rootEntity : null, (filter && filter.rootStateEntity) ? [] : [Validators.required]],
           direction: [filter ? filter.direction : EntitySearchDirection.FROM, [Validators.required]],
           direction: [filter ? filter.direction : EntitySearchDirection.FROM, [Validators.required]],
           maxLevel: [filter ? filter.maxLevel : 1, []],
           maxLevel: [filter ? filter.maxLevel : 1, []],
+          fetchLastLevelOnly: [filter ? filter.fetchLastLevelOnly : false, []]
         });
         });
         this.filterFormGroup.get('rootStateEntity').valueChanges.subscribe((rootStateEntity: boolean) => {
         this.filterFormGroup.get('rootStateEntity').valueChanges.subscribe((rootStateEntity: boolean) => {
           this.filterFormGroup.get('rootEntity').setValidators(rootStateEntity ? [] : [Validators.required]);
           this.filterFormGroup.get('rootEntity').setValidators(rootStateEntity ? [] : [Validators.required]);

@@ -38,6 +38,12 @@
                   <mat-icon class="tb-mat-20"
                   <mat-icon class="tb-mat-20"
                             svgIcon="alpha-a-circle-outline"></mat-icon>
                             svgIcon="alpha-a-circle-outline"></mat-icon>
               </span>
               </span>
+              <span *ngIf="key.type === dataKeyTypes.entityField"
+                    matTooltip="{{'datakey.entity-field' | translate }}"
+                    matTooltipPosition="above">
+                  <mat-icon class="tb-mat-20"
+                            svgIcon="alpha-e-circle-outline"></mat-icon>
+              </span>
               <span *ngIf="key.type === dataKeyTypes.timeseries"
               <span *ngIf="key.type === dataKeyTypes.timeseries"
                     matTooltip="{{'datakey.timeseries' | translate }}"
                     matTooltip="{{'datakey.timeseries' | translate }}"
                     matTooltipPosition="above">
                     matTooltipPosition="above">
@@ -87,6 +93,12 @@
               <mat-icon class="tb-mat-16"
               <mat-icon class="tb-mat-16"
                         svgIcon="alpha-a-circle-outline"></mat-icon>
                         svgIcon="alpha-a-circle-outline"></mat-icon>
           </span>
           </span>
+          <span *ngIf="key.type === dataKeyTypes.entityField"
+                matTooltip="{{'datakey.entity-field' | translate }}"
+                matTooltipPosition="above">
+              <mat-icon class="tb-mat-16"
+                        svgIcon="alpha-e-circle-outline"></mat-icon>
+          </span>
           <span *ngIf="key.type === dataKeyTypes.timeseries"
           <span *ngIf="key.type === dataKeyTypes.timeseries"
                 matTooltip="{{'datakey.timeseries' | translate }}"
                 matTooltip="{{'datakey.timeseries' | translate }}"
                 matTooltipPosition="above">
                 matTooltipPosition="above">
@@ -114,15 +126,22 @@
             <span *ngIf="widgetType == widgetTypes.latest"
             <span *ngIf="widgetType == widgetTypes.latest"
                   matTooltip="{{'datakey.attributes' | translate }}"
                   matTooltip="{{'datakey.attributes' | translate }}"
                   matTooltipPosition="above">
                   matTooltipPosition="above">
-            <mat-icon (click)="createKey(searchText, dataKeyTypes.attribute)"
+              <mat-icon (click)="createKey(searchText, dataKeyTypes.attribute)"
                       class="tb-mat-16"
                       class="tb-mat-16"
                       svgIcon="alpha-a-circle-outline"></mat-icon>
                       svgIcon="alpha-a-circle-outline"></mat-icon>
-          </span>
+            </span>
+            <span *ngIf="widgetType == widgetTypes.latest"
+                  matTooltip="{{'datakey.entity-field' | translate }}"
+                  matTooltipPosition="above">
+              <mat-icon (click)="createKey(searchText, dataKeyTypes.entityField)"
+                        class="tb-mat-16"
+                        svgIcon="alpha-e-circle-outline"></mat-icon>
+            </span>
             <span matTooltip="{{'datakey.timeseries' | translate }}"
             <span matTooltip="{{'datakey.timeseries' | translate }}"
                   matTooltipPosition="above">
                   matTooltipPosition="above">
-            <mat-icon (click)="createKey(searchText, dataKeyTypes.timeseries)"
+              <mat-icon (click)="createKey(searchText, dataKeyTypes.timeseries)"
                       class="tb-mat-16">timeline</mat-icon>
                       class="tb-mat-16">timeline</mat-icon>
-          </span>
+            </span>
           </ng-template>
           </ng-template>
         </ng-template>
         </ng-template>
       </div>
       </div>

@@ -420,6 +420,7 @@ export class DataKeysComponent implements ControlValueAccessor, OnInit, AfterVie
           const dataKeyTypes = [DataKeyType.timeseries];
           const dataKeyTypes = [DataKeyType.timeseries];
           if (this.widgetType === widgetType.latest) {
           if (this.widgetType === widgetType.latest) {
             dataKeyTypes.push(DataKeyType.attribute);
             dataKeyTypes.push(DataKeyType.attribute);
+            dataKeyTypes.push(DataKeyType.entityField);
           }
           }
           fetchObservable = this.callbacks.fetchEntityKeys(this.entityAliasId, this.searchText, dataKeyTypes);
           fetchObservable = this.callbacks.fetchEntityKeys(this.entityAliasId, this.searchText, dataKeyTypes);
         } else {
         } else {

@@ -14,7 +14,7 @@
 /// limitations under the License.
 /// limitations under the License.
 ///
 ///
 
 
-import { ChangeDetectionStrategy, Component, forwardRef, Input, OnInit } from '@angular/core';
+import { Component, forwardRef, Input, OnInit } from '@angular/core';
 import { PageComponent } from '@shared/components/page.component';
 import { PageComponent } from '@shared/components/page.component';
 import { Store } from '@ngrx/store';
 import { Store } from '@ngrx/store';
 import { AppState } from '@core/core.state';
 import { AppState } from '@core/core.state';
@@ -22,12 +22,11 @@ import {
   DataKey,
   DataKey,
   Datasource,
   Datasource,
   DatasourceType,
   DatasourceType,
-  datasourceTypeTranslationMap, defaultLegendConfig,
-  WidgetActionDescriptor,
+  datasourceTypeTranslationMap,
+  defaultLegendConfig,
   widgetType
   widgetType
 } from '@shared/models/widget.models';
 } from '@shared/models/widget.models';
 import {
 import {
-  AbstractControl,
   ControlValueAccessor,
   ControlValueAccessor,
   FormArray,
   FormArray,
   FormBuilder,
   FormBuilder,
@@ -58,7 +57,8 @@ import { MatDialog } from '@angular/material/dialog';
 import { EntityService } from '@core/http/entity.service';
 import { EntityService } from '@core/http/entity.service';
 import { JsonFormComponentData } from '@shared/components/json-form/json-form-component.models';
 import { JsonFormComponentData } from '@shared/components/json-form/json-form-component.models';
 import { WidgetActionsData } from './action/manage-widget-actions.component.models';
 import { WidgetActionsData } from './action/manage-widget-actions.component.models';
-import { Dashboard, DashboardState } from '@shared/models/dashboard.models';
+import { DashboardState } from '@shared/models/dashboard.models';
+import { entityFields } from '@shared/models/entity.models';
 
 
 const emptySettingsSchema = {
 const emptySettingsSchema = {
   type: 'object',
   type: 'object',
@@ -621,10 +621,10 @@ export class WidgetConfigComponent extends PageComponent implements OnInit, Cont
       return chip;
       return chip;
     } else {
     } else {
       let label: string = chip;
       let label: string = chip;
-      if (type === DataKeyType.alarm) {
-        const alarmField = alarmFields[label];
-        if (alarmField) {
-          label = this.translate.instant(alarmField.name);
+      if (type === DataKeyType.alarm || type === DataKeyType.entityField) {
+        const keyField = type === DataKeyType.alarm ? alarmFields[label] : entityFields[chip];;
+        if (keyField) {
+          label = this.translate.instant(keyField.name);
         }
         }
       }
       }
       label = this.genNextLabel(label);
       label = this.genNextLabel(label);

@@ -91,6 +91,7 @@ export interface RelationsQueryFilter {
   direction?: EntitySearchDirection;
   direction?: EntitySearchDirection;
   filters?: Array<EntityTypeFilter>;
   filters?: Array<EntityTypeFilter>;
   maxLevel?: number;
   maxLevel?: number;
+  fetchLastLevelOnly?: boolean;
 }
 }
 
 
 export interface EntitySearchQueryFilter {
 export interface EntitySearchQueryFilter {
@@ -100,6 +101,8 @@ export interface EntitySearchQueryFilter {
   rootEntity?: EntityId;
   rootEntity?: EntityId;
   relationType?: string;
   relationType?: string;
   direction?: EntitySearchDirection;
   direction?: EntitySearchDirection;
+  maxLevel?: number;
+  fetchLastLevelOnly?: boolean;
 }
 }
 
 
 export interface AssetSearchQueryFilter extends EntitySearchQueryFilter {
 export interface AssetSearchQueryFilter extends EntitySearchQueryFilter {

@@ -57,3 +57,18 @@ export interface DeviceCredentials extends BaseData<DeviceCredentialsId> {
 export interface DeviceSearchQuery extends EntitySearchQuery {
 export interface DeviceSearchQuery extends EntitySearchQuery {
   deviceTypes: Array<string>;
   deviceTypes: Array<string>;
 }
 }
+
+export interface ClaimRequest {
+  secretKey: string;
+}
+
+export enum ClaimResponse {
+  SUCCESS = 'SUCCESS',
+  FAILURE = 'FAILURE',
+  CLAIMED = 'CLAIMED'
+}
+
+export interface ClaimResult {
+  device: Device,
+  response: ClaimResponse
+}

@@ -53,3 +53,89 @@ export interface ImportEntitiesResultInfo {
     entity: number;
     entity: number;
   };
   };
 }
 }
+
+export interface EntityField {
+  keyName: string;
+  value: string;
+  name: string;
+  time?: boolean;
+}
+
+export const entityFields: {[fieldName: string]: EntityField} = {
+  createdTime: {
+    keyName: 'createdTime',
+    name: 'entity-field.created-time',
+    value: 'createdTime',
+    time: true
+  },
+  name: {
+    keyName: 'name',
+    name: 'entity-field.name',
+    value: 'name'
+  },
+  type: {
+    keyName: 'type',
+    name: 'entity-field.type',
+    value: 'type'
+  },
+  firstName: {
+    keyName: 'firstName',
+    name: 'entity-field.first-name',
+    value: 'firstName'
+  },
+  lastName: {
+    keyName: 'lastName',
+    name: 'entity-field.last-name',
+    value: 'lastName'
+  },
+  email: {
+    keyName: 'email',
+    name: 'entity-field.email',
+    value: 'email'
+  },
+  title: {
+    keyName: 'title',
+    name: 'entity-field.title',
+    value: 'title'
+  },
+  country: {
+    keyName: 'country',
+    name: 'entity-field.country',
+    value: 'country'
+  },
+  state: {
+    keyName: 'state',
+    name: 'entity-field.state',
+    value: 'state'
+  },
+  city: {
+    keyName: 'city',
+    name: 'entity-field.city',
+    value: 'city'
+  },
+  address: {
+    keyName: 'address',
+    name: 'entity-field.address',
+    value: 'address'
+  },
+  address2: {
+    keyName: 'address2',
+    name: 'entity-field.address2',
+    value: 'address2'
+  },
+  zip: {
+    keyName: 'zip',
+    name: 'entity-field.zip',
+    value: 'zip'
+  },
+  phone: {
+    keyName: 'phone',
+    name: 'entity-field.phone',
+    value: 'phone'
+  },
+  label: {
+    keyName: 'label',
+    name: 'entity-field.label',
+    value: 'label'
+  }
+};

@@ -64,6 +64,7 @@ export interface RelationsSearchParameters {
   direction: EntitySearchDirection;
   direction: EntitySearchDirection;
   relationTypeGroup?: RelationTypeGroup;
   relationTypeGroup?: RelationTypeGroup;
   maxLevel?: number;
   maxLevel?: number;
+  fetchLastLevelOnly?: boolean;
 }
 }
 
 
 export interface EntityRelationsQuery {
 export interface EntityRelationsQuery {

@@ -26,7 +26,8 @@ export enum DataKeyType {
   timeseries = 'timeseries',
   timeseries = 'timeseries',
   attribute = 'attribute',
   attribute = 'attribute',
   function = 'function',
   function = 'function',
-  alarm = 'alarm'
+  alarm = 'alarm',
+  entityField = 'entityField'
 }
 }
 
 
 export enum LatestTelemetry {
 export enum LatestTelemetry {