@arcgis/core
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ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API
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JavaScript
/*
All material copyright ESRI, All Rights Reserved, unless otherwise specified.
See https://js.arcgis.com/4.32/esri/copyright.txt for details.
*/
import e from"../../../../../../core/Evented.js";import{handlesGroup as t}from"../../../../../../core/handleUtils.js";import"../../../../../../core/has.js";import{destroyMaybe as s}from"../../../../../../core/maybe.js";import{StreamFeatureManager as n}from"../../../../../../layers/graphics/data/StreamFeatureManager.js";import{createConnection as i}from"../../../../../../layers/graphics/sources/connections/createConnection.js";import{internalTimeReceivedField as o}from"../../../../../../layers/support/streamLayerUtils.js";import{StreamConnectionState as r}from"../StreamConnectionState.js";import{StreamFeatureStore as a}from"../StreamFeatureStore.js";import{ALoadStrategy as c}from"./ALoadStrategy.js";import{StreamSourceChunk as h}from"./chunks/StreamSourceChunk.js";class m extends c{constructor(t,s,i,c,h){super(i),this._service=t,this._dataFilter=s,this._streamOptions=c,this._metadata=h,this._connectionState=new r,this._forceRefresh=!1,this.events=new e;const{objectIdField:m,timeInfo:d}=this._metadata,{purgeOptions:_}=s;this._stagingStore=new a(this._metadata.weakCloneWithAdditionalFields([{name:o,alias:"timeReceived",type:"esriFieldTypeDate"}]),(e=>this.events.emit("features-updated",e))),this._manager=new n(this._stagingStore,m,d,_),this.connect()}destroy(){super.destroy(),this.disconnect()}get about(){return{supportsDisplayFilter:!1,willQueryAllFeatures:!1,willQueryFullResolutionGeometry:!1}}get connectionStatus(){return this._connectionState.connectionStatus}get errorString(){return this._connectionState?.errorString}async refresh(){const e=null!=this._chunk;this._manager.checkForUpdates()||!e||this._forceRefresh?(this._chunk&&this._store.remove(this._chunk),this._forceRefresh=!1,this._chunk=new h(this._stagingStore.reader),this._store.insert(this._chunk),this.events.emit("tick")):this.events.emit("tick")}async updateFields(e){throw new Error("Updating available fields not supported for StreamLayer")}async load(e){}unload(e){}disconnect(){this._connection=s(this._connection),this._connectionState.connection=null,this._handlesGroup?.remove()}connect(){if(null!=this._connection)return;const{geometryType:e,spatialReference:s}=this._metadata,{maxReconnectionAttempts:n,maxReconnectionInterval:o,geometryDefinition:r,definitionExpression:a,customParameters:c}=this._dataFilter;this._connection=i(this._service.source,s,this._streamOptions.outSR,e,a,r,n,o,c),this._handlesGroup=t([this._connection.on("data-received",(e=>this._onFeature(e))),this._connection.on("message-received",(e=>this._onWebSocketMessage(e)))]),this._connectionState.connection=this._connection}clear(){this._manager.checkForUpdates(),this._stagingStore.clear(),this._forceRefresh=!0}updateCustomParameters(e){this._connection?.updateCustomParameters(e)}sendMessageToSocket(e){this._connection?.sendMessageToSocket(e)}sendMessageToClient(e){this._connection?.sendMessageToClient(e)}_onWebSocketMessage(e){if("type"in e)switch(e.type){case"delete":if(e.objectIds)for(const t of e.objectIds)this._manager.removeById(t);if(e.trackIds)for(const t of e.trackIds)this._manager.removeByTrackId(t);break;case"clear":this.clear()}this.events.emit("message-received",e)}_onFeature(e){try{this._manager.add(e),this.events.emit("data-received",e)}catch(t){}}}export{m as StreamLoadStrategy};