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How to use ds method in wpt
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DataSourceManager.js
Source:DataSourceManager.js 
1///////////////////////////////////////////////////////////////////////////2// Copyright © Esri. All Rights Reserved.3//4// Licensed under the Apache License Version 2.0 (the "License");5// you may not use this file except in compliance with the License.6// You may obtain a copy of the License at7//8// http://www.apache.org/licenses/LICENSE-2.09//10// Unless required by applicable law or agreed to in writing, software11// distributed under the License is distributed on an "AS IS" BASIS,12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.13// See the License for the specific language governing permissions and14// limitations under the License.15///////////////////////////////////////////////////////////////////////////16define([17 'dojo/_base/declare',18 'dojo/_base/lang',19 'dojo/_base/array',20 'dojo/topic',21 'dojo/Evented',22 'dojo/when',23 './utils',24 'jimu/LayerInfos/LayerInfos',25 'jimu/portalUtils',26 'jimu/portalUrlUtils',27 'jimu/filterUtils',28 'esri/tasks/query',29 'esri/tasks/QueryTask',30 'esri/tasks/StatisticDefinition',31 './Query'32 ],33 function(declare, lang, array, topic, Evented, when, jimuUtils, LayerInfos, portalUtils, portalUrlUtils, FilterUtils,34 Query, QueryTask, StatisticDefinition, JimuQuery) {35 var dataSourceTypes = {36 Features: 'Features',37 FeatureStatistics: 'FeatureStatistics'38 };39 var resultRecordType = {40 all: 'all',41 serviceLimitation: 'serviceLimitation',42 custom: 'custom'43 };44 var instance = null,45 clazz = declare(Evented, {46 constructor: function() {47 this._listeners = [];48 this._refreshTimers = [];49 //key=data source id,50 //value=data51 // {52 // data: [] //feature array53 // }.54 // if it's feature layer, the feature.attributes are the same with fields:55 // if it's statistics, the feature.attributes are from statistics56 this._dataStore = {};57 //key=data source id,58 //value=jimuQuery59 //cache jumuQuery here because there maybe pagenation60 this._jimuQueryObject = {};61 //key=data source id62 //value=widget id array63 this._dataSourceUsage = {};64 //key=item url65 //value=filter66 this._itemsFilter = {};67 this.filterUtils = new FilterUtils();68 if(window.isBuilder){69 topic.subscribe("app/mapLoaded", lang.hitch(this, this._onMapLoaded));70 topic.subscribe("app/mapChanged", lang.hitch(this, this._onMapChanged));71 }else{72 topic.subscribe("mapLoaded", lang.hitch(this, this._onMapLoaded));73 topic.subscribe("mapChanged", lang.hitch(this, this._onMapChanged));74 }75 if(window.isBuilder){76 topic.subscribe("app/appConfigLoaded", lang.hitch(this, this._onAppConfigLoaded));77 topic.subscribe("app/appConfigChanged", lang.hitch(this, this._onAppConfigChanged));78 }else{79 topic.subscribe("appConfigLoaded", lang.hitch(this, this._onAppConfigLoaded));80 topic.subscribe("appConfigChanged", lang.hitch(this, this._onAppConfigChanged));81 }82 topic.subscribe("updateDataSourceData", lang.hitch(this, this._onUpdataDataSourceData));83 if(window.isBuilder){84 //in builder, we need listen data source data change in map, so widget setting can read data85 topic.subscribe("app/dataSourceDataUpdated", lang.hitch(this, this._onDataSourceDataUpdatedInApp));86 }87 },88 getData: function(dsId){89 return this._dataStore[dsId];90 },91 getDataSourceConfig: function(dsId){92 return this.appConfig.dataSource.dataSources[dsId];93 },94 parseDataSourceId: function(id){95 var segs = id.split('~');96 var ret = {};97 if(segs.length < 2){98 console.error('Bad data source id:', id);99 return ret;100 }101 switch(segs[0]){102 case 'map': //map~<layerId>~<filterId>103 //layer id may contain "~"104 var lastPos = id.lastIndexOf('~');105 ret = {106 from: 'map',107 layerId: id.substring(4, lastPos)108 };109 return ret;110 case 'widget': //widget~<widgetId>~<dataSourceId>111 ret = {112 from: 'widget',113 widgetId: segs[1]114 };115 return ret;116 case 'external': //external~<id>117 ret = {118 from: 'external'119 };120 return ret;121 default:122 console.error('Bad data source id:', id);123 }124 },125 addDataSourceUsage: function(dsId, widgetId){126 if(!this._dataSourceUsage[dsId]){127 this._dataSourceUsage[dsId] = [widgetId];128 this._startOneDataSource(this.appConfig.dataSource.dataSources[dsId]);129 }else{130 if(this._dataSourceUsage[dsId].indexOf(widgetId) < 0){131 this._dataSourceUsage[dsId].push(widgetId);132 }133 if(this._dataSourceUsage[dsId].length === 1){134 this._startOneDataSource(this.appConfig.dataSource.dataSources[dsId]);135 }136 }137 },138 removeDataSourceUsage: function(dsId, widgetId){139 if(!this._dataSourceUsage[dsId]){140 return;141 }142 if(this._dataSourceUsage[dsId].indexOf(widgetId) >= 0){143 this._dataSourceUsage[dsId] = array.filter(this._dataSourceUsage[dsId], function(wid){144 return wid !== widgetId;145 });146 }147 // if(this._dataSourceUsage[dsId].length === 0){148 // this._stopAndCleanOneDataSource(this.appConfig.dataSource.dataSources[dsId]);149 // }150 },151 _onUpdataDataSourceData: function(dsId, data){152 var ds = this.appConfig.dataSource.dataSources[dsId];153 if(!ds){154 console.error('Not found data source id:', dsId);155 return;156 }157 var idObj = this.parseDataSourceId(dsId);158 if(idObj.from !== 'widget'){159 console.error('Please update data source from widget only.', dsId);160 return;161 }162 this._updateDataSourceData(dsId, data);163 },164 _updateDataSourceData: function(dsId, data){165 this._dataStore[dsId] = data;166 topic.publish('dataSourceDataUpdated', dsId, data);167 this.emit('update', dsId, data);168 },169 _onDataSourceDataUpdatedInApp: function(dsId, data){170 this._updateDataSourceData(dsId, data);171 },172 _onMapLoaded: function(map) {173 this.map = map;174 if(window.isBuilder){175 return;176 }177 this._handleDataSourceConfigChange(this.appConfig, this.appConfig, 'mapLoaded');178 },179 _onMapChanged: function(map) {180 this.map = map;181 if(window.isBuilder){182 return;183 }184 this._handleDataSourceConfigChange(this.appConfig, this.appConfig, 'mapChanged');185 },186 _onAppConfigLoaded: function(_appConfig) {187 var appConfig = lang.clone(_appConfig);188 this.appConfig = appConfig;189 },190 _onAppConfigChanged: function(_appConfig, reason) {191 var appConfig = lang.clone(_appConfig);192 if(window.isBuilder){193 this.appConfig = appConfig;194 return;195 }196 if(reason === 'dataSourceChange'){197 this._handleDataSourceConfigChange(this.appConfig, appConfig, reason);198 }else if(reason === 'mapChange'){199 this._cleanForConfigChangedDataSource(this.appConfig, appConfig);200 }201 this.appConfig = appConfig;202 },203 _handleDataSourceConfigChange: function(oldAppConfig, newAppConfig, reason){204 if(oldAppConfig){205 this._removeListeners();206 this._removeTimers();207 this._cleanForConfigChangedDataSource(oldAppConfig, newAppConfig);208 }209 array.forEach(Object.keys(newAppConfig.dataSource.dataSources), function(dsId){210 newAppConfig.dataSource.dataSources[dsId].idObj = this.parseDataSourceId(dsId);211 }, this);212 this._listenDataSourceChange(newAppConfig.dataSource.dataSources);213 this._startRefreshTimer(newAppConfig.dataSource, reason);214 this._initStaticDataSource(newAppConfig.dataSource);215 },216 _cleanForConfigChangedDataSource: function(oldAppConfig, newAppConfig){217 var oldDss = oldAppConfig.dataSource.dataSources;218 var newDss = newAppConfig.dataSource.dataSources;219 array.forEach(Object.keys(oldDss), function(dsId){220 if(!newDss[dsId] ||221 (newDss[dsId] && !jimuUtils.isEqual(newDss[dsId], oldDss[dsId]))){222 delete this._jimuQueryObject[dsId];223 this._updateDataSourceData(dsId, {features: []});224 delete this._dataStore[dsId];225 }226 }, this);227 },228 _isGlobalRefresh: function(settings){229 return settings.unifiedRefreshInterval && settings.unifiedRefreshInterval > 0;230 },231 _startOneDataSource: function(ds){232 var interval;233 if(this._isGlobalRefresh(this.appConfig.dataSource.settings)){234 interval = this.appConfig.dataSource.settings.unifiedRefreshInterval;235 }else{236 interval = ds.refreshInterval;237 }238 if(ds.idObj.from === 'map'){239 this._listenMapDataSourceChange(ds);240 }else if(ds.idObj.from === 'external'){241 if(ds.filterByExtent){242 var listener = {};243 listener.handle = this.map.on('extent-change', lang.hitch(this, this._onLayerDataChange, ds));244 listener.dsId = ds.id;245 this._listeners.push(listener);246 }247 }248 if(ds.idObj.from === 'map' || ds.idObj.from === 'external'){249 this._refeshDataSource(ds);250 if(ds.isDynamic){251 var timer = {};252 timer.handle = setInterval(lang.hitch(this, this._refeshDataSource, ds), interval * 1000 * 60);253 timer.dsId = ds.id;254 this._refreshTimers.push(timer);255 }256 }257 },258 _stopAndCleanOneDataSource: function(ds){259 this._listeners = array.filter(this._listeners, function(listener){260 if(listener.dsId === ds.id){261 listener.handle.remove();262 return false;263 }else{264 return true;265 }266 }, this);267 this._refreshTimers = array.filter(this._refreshTimers, function(timer){268 if(timer.dsId === ds.id){269 clearInterval(timer.handle);270 return false;271 }else{272 return true;273 }274 }, this);275 this._updateDataSourceData(ds.id, {features: []});276 },277 _listenDataSourceChange: function(dataSources){278 array.forEach(Object.keys(dataSources), function(dsId){279 var ds = dataSources[dsId];280 //data source from widget will changed by widget,281 if(ds.idObj.from === 'map'){282 this._listenMapDataSourceChange(ds);283 }else if(ds.idObj.from === 'external'){284 if(ds.filterByExtent){285 var listener = {};286 listener.handle = this.map.on('extent-change', lang.hitch(this, this._onLayerDataChange, ds));287 listener.dsId = ds.id;288 this._listeners.push(listener);289 }290 }291 }, this);292 },293 _listenMapDataSourceChange: function(ds){294 this._getLayerObject(ds.idObj.layerId).then(lang.hitch(this, function(layer){295 if(!layer){296 //means layer is not in map, this means layer is removed, or map is changed.297 console.error('Can not find layer that data source depends on.', ds.id);298 return;299 }300 var listener = {};301 listener.handle = layer.on('edits-complete', lang.hitch(this, this._onLayerDataChange, ds));302 listener.dsId = ds.id;303 this._listeners.push(listener);304 listener = {};305 listener.handle = this._getLayerInfo(ds.idObj.layerId)306 .on('filterChanged', lang.hitch(this, this._onLayerDataChange, ds));307 listener.dsId = ds.id;308 this._listeners.push(listener);309 if(ds.filterByExtent){310 listener = {};311 listener.handle = this.map.on('extent-change', lang.hitch(this, this._onLayerDataChange, ds));312 listener.dsId = ds.id;313 this._listeners.push(listener);314 }315 // //316 // if(layer.refreshInterval){317 // ds.isDynamic = true;318 // ds.refreshInterval = layer.refreshInterval;319 // }else{320 // ds.isDynamic = false;321 // ds.refreshInterval = 0;322 // }323 }));324 },325 _onLayerDataChange: function(ds){326 this._doQueryForDataSource(ds);327 },328 _doQueryForDataSource: function(ds){329 if(this.appConfig.mode !== 'config'){330 //in config mode, we don't care whether data source is ued, we always do query because data source may331 //be used by setting page.332 //when launch app, we query data only when data source is used.333 if(!this._dataSourceUsage[ds.id] || this._dataSourceUsage[ds.id].length === 0){334 return;335 }336 }337 this.doQuery(ds).then(lang.hitch(this, function(featureSet){338 this._updateDataSourceData(ds.id, {339 features: featureSet.features340 });341 }));342 },343 _getLayerObject: function(layerId){344 var layerInfo = LayerInfos.getInstanceSync().getLayerOrTableInfoById(layerId);345 if(layerInfo){346 return layerInfo.getLayerObject();347 }else{348 return when(null);349 }350 },351 _getLayerInfo: function(layerId){352 return LayerInfos.getInstanceSync().getLayerOrTableInfoById(layerId);353 },354 _startRefreshTimer: function(dataSource, reason){355 var dataSources = dataSource.dataSources;356 var dataSourceSettings = dataSource.settings;357 array.forEach(Object.keys(dataSources), function(dsId){358 var ds = dataSources[dsId];359 if(ds.idObj.from === 'widget' || !ds.isDynamic || !ds.url){360 return;361 }362 var interval;363 if(this._isGlobalRefresh(dataSourceSettings)){364 interval = dataSourceSettings.unifiedRefreshInterval;365 }else{366 interval = ds.refreshInterval;367 }368 if(reason === 'dataSourceChange'){369 if(ds.idObj.from === 'external' || ds.idObj.from === 'map'){370 //data source change will not trigger layer update-end event, so query here371 this._refeshDataSource(ds);372 }373 }else{374 if(ds.idObj.from === 'external'){375 //for ds from map, because we listen layer update-end event, so we don't do query here.376 this._refeshDataSource(ds);377 }378 }379 var timer = {380 handle: setInterval(lang.hitch(this, this._refeshDataSource, ds), interval * 1000 * 60),381 dsId: dataSource.id382 };383 this._refreshTimers.push(timer);384 }, this);385 },386 _initStaticDataSource: function(dataSource){387 array.forEach(Object.keys(dataSource.dataSources), function(dsId){388 var ds = dataSource.dataSources[dsId];389 if(ds.idObj.from === 'widget' || ds.isDynamic || !ds.url){390 return;391 }392 this._doQueryForDataSource(ds);393 }, this);394 },395 _refeshDataSource: function(ds){396 this._doQueryForDataSource(ds);397 },398 _getDataSourceFilter: function(ds){399 if(ds.idObj.from === 'map'){400 var layerInfo = LayerInfos.getInstanceSync().getLayerOrTableInfoById(ds.idObj.layerId);401 var webMapFilter;402 if(layerInfo){403 webMapFilter = layerInfo.getFilter();404 }405 var dsFilter = ds.filter? this._getFilterExpr(ds.filter, ds.url): '1=1';406 var filter;407 if(webMapFilter){408 filter = '(' + webMapFilter + ') and (' + dsFilter + ')';409 }else{410 filter = dsFilter;411 }412 return when(filter);413 }else if(ds.idObj.from === 'external'){414 if(ds.portalUrl && ds.itemId){415 return this._getFilterFromItem(ds.portalUrl, ds.itemId, ds.url)416 .then(lang.hitch(this, function(itemFilter){417 var dsFilter = ds.filter? this._getFilterExpr(ds.filter, ds.url): '1=1';418 if(itemFilter){419 filter = '(' + itemFilter + ') and (' + dsFilter + ')';420 }else{421 filter = dsFilter;422 }423 return filter;424 }));425 }else{426 return when(ds.filter? this._getFilterExpr(ds.filter, ds.url): '1=1');427 }428 }else{429 return when(ds.filter? this._getFilterExpr(ds.filter, ds.url): '1=1');430 }431 },432 _getFilterExpr: function(filterObj, url){433 if(this.filterUtils.hasVirtualDate(filterObj)){434 this.filterUtils.isHosted = jimuUtils.isHostedService(url);435 return this.filterUtils.getExprByFilterObj(filterObj);436 }else{437 return filterObj.expr;438 }439 },440 _getFilterFromItem: function(portalUrl, itemId, url){441 var key = portalUrlUtils.getItemUrl(portalUrl, itemId);442 if(this._itemsFilter[key]){443 return when(this._itemsFilter[key]);444 }445 var portal = portalUtils.getPortal(portalUrl);446 return portal.getItemById(itemId).then(lang.hitch(this, function(itemInfo){447 //for now, we see that only feature service item supports set filter448 if(itemInfo.type !== 'Feature Service'){449 this._itemsFilter[key] = null;450 return null;451 }452 return portal.getItemData(itemId).then(lang.hitch(this, function(itemData){453 var segs = url.split('/');454 var layerId = segs.pop();455 if(!layerId){//the url ends with '/'456 layerId = segs.pop();457 }458 if(!itemData.layers){459 this._itemsFilter[key] = null;460 return null;461 }462 var layer = itemData.layers.filter(function(layer){463 return layer.id + '' === layerId;464 })[0];465 if(!layer || !layer.layerDefinition){466 this._itemsFilter[key] = null;467 return null;468 }469 this._itemsFilter[key] = layer.layerDefinition.definitionExpression;470 return layer.layerDefinition.definitionExpression;471 }));472 }));473 },474 doQuery: function(ds){475 if(!ds.idObj){476 ds.idObj = this.parseDataSourceId(ds.id);477 }478 this.emit('begin-update', ds.id);479 return this._getQueryObjectFromDataSource(ds).then(lang.hitch(this, function(queryObj){480 var query, queryTask;481 if(ds.type === dataSourceTypes.Features){482 if(ds.resultRecordType === resultRecordType.serviceLimitation){483 query = queryObj;484 queryTask = new QueryTask(ds.url);485 return queryTask.execute(query);486 }else{487 //when data source is changed, the cache will be removed.488 var jimuQuery = this._jimuQueryObject[ds.id];489 if(jimuQuery){490 //the query object may be changed in runtime491 if(jimuQuery.url !== ds.url ||492 !jimuUtils.isEqual(jimuQuery.query.toJson(), queryObj.toJson())){493 delete this._jimuQueryObject[ds.id];494 jimuQuery = null;495 }496 }497 if(!jimuQuery){498 var queryOptions = {};499 queryOptions.url = ds.url;500 queryOptions.query = queryObj;501 if(ds.resultRecordType === resultRecordType.all){502 jimuQuery = new JimuQuery(queryOptions);503 }else{504 queryOptions.pageSize = ds.resultRecordCount;505 jimuQuery = new JimuQuery(queryOptions);506 }507 this._jimuQueryObject[ds.id] = jimuQuery;508 }509 if(ds.resultRecordType === resultRecordType.all){510 return jimuQuery.getAllFeatures();511 }else{512 return jimuQuery.queryByPage(1);513 }514 }515 }else{516 queryTask = new QueryTask(ds.url);517 query = new Query();518 return this._getDataSourceFilter(ds).then(lang.hitch(this, function(dsFilter){519 query.where = dsFilter;520 if (ds.filterByExtent) {521 query.geometry = this.map.extent;522 }523 if(ds.dataSchema.groupByFields && ds.dataSchema.groupByFields.length > 0){524 query.groupByFieldsForStatistics = ds.dataSchema.groupByFields;525 }526 if(ds.dataSchema.orderByFields && ds.dataSchema.orderByFields.length > 0){527 query.orderByFields = ds.dataSchema.orderByFields;528 }529 query.outStatistics = ds.dataSchema.statistics.map(function(s){530 var statName = s.onStatisticField + '_' + s.statisticType;531 if(s.statisticType === 'count'){532 statName = 'STAT_COUNT';533 }534 statName = jimuUtils.upperCaseString(statName);535 var statisticDefinition = new StatisticDefinition();536 statisticDefinition.statisticType = s.statisticType;537 statisticDefinition.onStatisticField = s.onStatisticField;538 statisticDefinition.outStatisticFieldName = statName;539 return statisticDefinition;540 });541 return queryTask.execute(query);542 }));543 }544 }));545 },546 _getQueryObjectFromDataSource: function(ds){547 return this._getDataSourceFilter(ds).then(lang.hitch(this, function(dsFilter){548 var query = new Query();549 query.where = dsFilter;550 if(ds.filterByExtent){551 query.geometry = this.map.extent;552 }553 query.outFields = ds.dataSchema.fields.map(function(f){554 return f.name;555 });556 if(ds.dataSchema.orderByFields && ds.dataSchema.orderByFields.length > 0){557 query.orderByFields = ds.dataSchema.orderByFields;558 }559 query.returnGeometry = true;560 query.outSpatialReference = this.map.spatialReference;561 return when(query);562 }));563 },564 _removeListeners: function(){565 this._listeners.forEach(lang.hitch(this, function(listener){566 listener.handle.remove();567 }));568 this._listeners = [];569 },570 _removeTimers: function(){571 this._refreshTimers.forEach(lang.hitch(this, function(timer){572 clearInterval(timer.handle);573 }));574 this._refreshTimers = [];575 }576 });577 clazz.getInstance = function() {578 if (instance === null) {579 instance = new clazz();580 window._datasourceManager = instance;581 }582 return instance;583 };584 return clazz;...
expr.js
Source:expr.js
1// Copyright 2006 The Closure Library Authors. All Rights Reserved.2//3// Licensed under the Apache License, Version 2.0 (the "License");4// you may not use this file except in compliance with the License.5// You may obtain a copy of the License at6//7// http://www.apache.org/licenses/LICENSE-2.08//9// Unless required by applicable law or agreed to in writing, software10// distributed under the License is distributed on an "AS-IS" BASIS,11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.12// See the License for the specific language governing permissions and13// limitations under the License.14/**15 * @fileoverview16 * Expression evaluation utilities. Expression format is very similar to XPath.17 *18 * Expression details:19 * - Of format A/B/C, which will evaluate getChildNode('A').getChildNode('B').20 * getChildNodes('C')|getChildNodeValue('C')|getChildNode('C') depending on21 * call22 * - If expression ends with '/name()', will get the name() of the node23 * referenced by the preceding path.24 * - If expression ends with '/count()', will get the count() of the nodes that25 * match the expression referenced by the preceding path.26 * - If expression ends with '?', the value is OK to evaluate to null. This is27 * not enforced by the expression evaluation functions, instead it is28 * provided as a flag for client code which may ignore depending on usage29 * - If expression has [INDEX], will use getChildNodes().getByIndex(INDEX)30 *31 */32goog.provide('goog.ds.Expr');33goog.require('goog.ds.BasicNodeList');34goog.require('goog.ds.EmptyNodeList');35goog.require('goog.string');36/**37 * Create a new expression. An expression uses a string expression language, and38 * from this string and a passed in DataNode can evaluate to a value, DataNode,39 * or a DataNodeList.40 *41 * @param {string=} opt_expr The string expression.42 * @constructor43 */44goog.ds.Expr = function(opt_expr) {45 if (opt_expr) {46 this.setSource_(opt_expr);47 }48};49/**50 * Set the source expression text & parse51 *52 * @param {string} expr The string expression source.53 * @param {Array=} opt_parts Array of the parts of an expression.54 * @param {goog.ds.Expr=} opt_childExpr Optional child of this expression,55 * passed in as a hint for processing.56 * @param {goog.ds.Expr=} opt_prevExpr Optional preceding expression57 * (i.e. $A/B/C is previous expression to B/C) passed in as a hint for58 * processing.59 * @private60 */61goog.ds.Expr.prototype.setSource_ = function(expr, opt_parts,62 opt_childExpr, opt_prevExpr) {63 this.src_ = expr;64 if (!opt_childExpr && !opt_prevExpr) {65 // Check whether it can be empty66 if (goog.string.endsWith(expr, goog.ds.Expr.String_.CAN_BE_EMPTY)) {67 this.canBeEmpty_ = true;68 expr = expr.substring(0, expr.length - 1);69 }70 // Check whether this is an node function71 if (goog.string.endsWith(expr, '()')) {72 if (goog.string.endsWith(expr, goog.ds.Expr.String_.NAME_EXPR) ||73 goog.string.endsWith(expr, goog.ds.Expr.String_.COUNT_EXPR) ||74 goog.string.endsWith(expr, goog.ds.Expr.String_.POSITION_EXPR)) {75 var lastPos = expr.lastIndexOf(goog.ds.Expr.String_.SEPARATOR);76 if (lastPos != -1) {77 this.exprFn_ = expr.substring(lastPos + 1);78 expr = expr.substring(0, lastPos);79 } else {80 this.exprFn_ = expr;81 expr = goog.ds.Expr.String_.CURRENT_NODE_EXPR;82 }83 if (this.exprFn_ == goog.ds.Expr.String_.COUNT_EXPR) {84 this.isCount_ = true;85 }86 }87 }88 }89 // Split into component parts90 this.parts_ = opt_parts || expr.split('/');91 this.size_ = this.parts_.length;92 this.last_ = this.parts_[this.size_ - 1];93 this.root_ = this.parts_[0];94 if (this.size_ == 1) {95 this.rootExpr_ = this;96 this.isAbsolute_ = goog.string.startsWith(expr, '$');97 } else {98 this.rootExpr_ = goog.ds.Expr.createInternal_(this.root_, null,99 this, null);100 this.isAbsolute_ = this.rootExpr_.isAbsolute_;101 this.root_ = this.rootExpr_.root_;102 }103 if (this.size_ == 1 && !this.isAbsolute_) {104 // Check whether expression maps to current node, for convenience105 this.isCurrent_ = (expr == goog.ds.Expr.String_.CURRENT_NODE_EXPR ||106 expr == goog.ds.Expr.String_.EMPTY_EXPR);107 // Whether this expression is just an attribute (i.e. '@foo')108 this.isJustAttribute_ =109 goog.string.startsWith(expr, goog.ds.Expr.String_.ATTRIBUTE_START);110 // Check whether this is a common node expression111 this.isAllChildNodes_ = expr == goog.ds.Expr.String_.ALL_CHILD_NODES_EXPR;112 this.isAllAttributes_ = expr == goog.ds.Expr.String_.ALL_ATTRIBUTES_EXPR;113 this.isAllElements_ = expr == goog.ds.Expr.String_.ALL_ELEMENTS_EXPR;114 }115};116/**117 * Get the source data path for the expression118 * @return {string} The path.119 */120goog.ds.Expr.prototype.getSource = function() {121 return this.src_;122};123/**124 * Gets the last part of the expression.125 * @return {?string} Last part of the expression.126 */127goog.ds.Expr.prototype.getLast = function() {128 return this.last_;129};130/**131 * Gets the parent expression of this expression, or null if this is top level132 * @return {goog.ds.Expr} The parent.133 */134goog.ds.Expr.prototype.getParent = function() {135 if (!this.parentExprSet_) {136 if (this.size_ > 1) {137 this.parentExpr_ = goog.ds.Expr.createInternal_(null,138 this.parts_.slice(0, this.parts_.length - 1), this, null);139 }140 this.parentExprSet_ = true;141 }142 return this.parentExpr_;143};144/**145 * Gets the parent expression of this expression, or null if this is top level146 * @return {goog.ds.Expr} The parent.147 */148goog.ds.Expr.prototype.getNext = function() {149 if (!this.nextExprSet_) {150 if (this.size_ > 1) {151 this.nextExpr_ = goog.ds.Expr.createInternal_(null, this.parts_.slice(1),152 null, this);153 }154 this.nextExprSet_ = true;155 }156 return this.nextExpr_;157};158/**159 * Evaluate an expression on a data node, and return a value160 * Recursively walks through child nodes to evaluate161 * TODO(user) Support other expression functions162 *163 * @param {goog.ds.DataNode=} opt_ds Optional datasource to evaluate against.164 * If not provided, evaluates against DataManager global root.165 * @return {*} Value of the node, or null if doesn't exist.166 */167goog.ds.Expr.prototype.getValue = function(opt_ds) {168 if (opt_ds == null) {169 opt_ds = goog.ds.DataManager.getInstance();170 } else if (this.isAbsolute_) {171 opt_ds = opt_ds.getDataRoot ? opt_ds.getDataRoot() :172 goog.ds.DataManager.getInstance();173 }174 if (this.isCount_) {175 var nodes = this.getNodes(opt_ds);176 return nodes.getCount();177 }178 if (this.size_ == 1) {179 return opt_ds.getChildNodeValue(this.root_);180 } else if (this.size_ == 0) {181 return opt_ds.get();182 }183 var nextDs = opt_ds.getChildNode(this.root_);184 if (nextDs == null) {185 return null;186 } else {187 return this.getNext().getValue(nextDs);188 }189};190/**191 * Evaluate an expression on a data node, and return matching nodes192 * Recursively walks through child nodes to evaluate193 *194 * @param {goog.ds.DataNode=} opt_ds Optional datasource to evaluate against.195 * If not provided, evaluates against data root.196 * @param {boolean=} opt_canCreate If true, will try to create new nodes.197 * @return {goog.ds.DataNodeList} Matching nodes.198 */199goog.ds.Expr.prototype.getNodes = function(opt_ds, opt_canCreate) {200 return /** @type {goog.ds.DataNodeList} */(this.getNodes_(opt_ds,201 false, opt_canCreate));202};203/**204 * Evaluate an expression on a data node, and return the first matching node205 * Recursively walks through child nodes to evaluate206 *207 * @param {goog.ds.DataNode=} opt_ds Optional datasource to evaluate against.208 * If not provided, evaluates against DataManager global root.209 * @param {boolean=} opt_canCreate If true, will try to create new nodes.210 * @return {goog.ds.DataNode} Matching nodes, or null if doesn't exist.211 */212goog.ds.Expr.prototype.getNode = function(opt_ds, opt_canCreate) {213 return /** @type {goog.ds.DataNode} */(this.getNodes_(opt_ds,214 true, opt_canCreate));215};216/**217 * Evaluate an expression on a data node, and return the first matching node218 * Recursively walks through child nodes to evaluate219 *220 * @param {goog.ds.DataNode=} opt_ds Optional datasource to evaluate against.221 * If not provided, evaluates against DataManager global root.222 * @param {boolean=} opt_selectOne Whether to return single matching DataNode223 * or matching nodes in DataNodeList.224 * @param {boolean=} opt_canCreate If true, will try to create new nodes.225 * @return {goog.ds.DataNode|goog.ds.DataNodeList} Matching node or nodes,226 * depending on value of opt_selectOne.227 * @private228 */229goog.ds.Expr.prototype.getNodes_ = function(opt_ds, opt_selectOne,230 opt_canCreate) {231 if (opt_ds == null) {232 opt_ds = goog.ds.DataManager.getInstance();233 } else if (this.isAbsolute_) {234 opt_ds = opt_ds.getDataRoot ? opt_ds.getDataRoot() :235 goog.ds.DataManager.getInstance();236 }237 if (this.size_ == 0 && opt_selectOne) {238 return opt_ds;239 } else if (this.size_ == 0 && !opt_selectOne) {240 return new goog.ds.BasicNodeList([opt_ds]);241 } else if (this.size_ == 1) {242 if (opt_selectOne) {243 return opt_ds.getChildNode(this.root_, opt_canCreate);244 }245 else {246 var possibleListChild = opt_ds.getChildNode(this.root_);247 if (possibleListChild && possibleListChild.isList()) {248 return possibleListChild.getChildNodes();249 } else {250 return opt_ds.getChildNodes(this.root_);251 }252 }253 } else {254 var nextDs = opt_ds.getChildNode(this.root_, opt_canCreate);255 if (nextDs == null && opt_selectOne) {256 return null;257 } else if (nextDs == null && !opt_selectOne) {258 return new goog.ds.EmptyNodeList();259 }260 return this.getNext().getNodes_(nextDs, opt_selectOne, opt_canCreate);261 }262};263/**264 * Whether the expression can be null.265 *266 * @type {boolean}267 * @private268 */269goog.ds.Expr.prototype.canBeEmpty_ = false;270/**271 * The parsed paths in the expression272 *273 * @type {Array.<string>}274 * @private275 */276goog.ds.Expr.prototype.parts_ = [];277/**278 * Number of paths in the expression279 *280 * @type {?number}281 * @private282 */283goog.ds.Expr.prototype.size_ = null;284/**285 * The root node path in the expression286 *287 * @type {string}288 * @private289 */290goog.ds.Expr.prototype.root_;291/**292 * The last path in the expression293 *294 * @type {?string}295 * @private296 */297goog.ds.Expr.prototype.last_ = null;298/**299 * Whether the expression evaluates to current node300 *301 * @type {boolean}302 * @private303 */304goog.ds.Expr.prototype.isCurrent_ = false;305/**306 * Whether the expression is just an attribute307 *308 * @type {boolean}309 * @private310 */311goog.ds.Expr.prototype.isJustAttribute_ = false;312/**313 * Does this expression select all DOM-style child nodes (element and text)314 *315 * @type {boolean}316 * @private317 */318goog.ds.Expr.prototype.isAllChildNodes_ = false;319/**320 * Does this expression select all DOM-style attribute nodes (starts with '@')321 *322 * @type {boolean}323 * @private324 */325goog.ds.Expr.prototype.isAllAttributes_ = false;326/**327 * Does this expression select all DOM-style element child nodes328 *329 * @type {boolean}330 * @private331 */332goog.ds.Expr.prototype.isAllElements_ = false;333/**334 * The function used by this expression335 *336 * @type {?string}337 * @private338 */339goog.ds.Expr.prototype.exprFn_ = null;340/**341 * Cached value for the parent expression.342 * @type {goog.ds.Expr?}343 * @private344 */345goog.ds.Expr.prototype.parentExpr_ = null;346/**347 * Cached value for the next expression.348 * @type {goog.ds.Expr?}349 * @private350 */351goog.ds.Expr.prototype.nextExpr_ = null;352/**353 * Create an expression from a string, can use cached values354 *355 * @param {string} expr The expression string.356 * @return {goog.ds.Expr} The expression object.357 */358goog.ds.Expr.create = function(expr) {359 var result = goog.ds.Expr.cache_[expr];360 if (result == null) {361 result = new goog.ds.Expr(expr);362 goog.ds.Expr.cache_[expr] = result;363 }364 return result;365};366/**367 * Create an expression from a string, can use cached values368 * Uses hints from related expressions to help in creation369 *370 * @param {?string=} opt_expr The string expression source.371 * @param {Array=} opt_parts Array of the parts of an expression.372 * @param {goog.ds.Expr=} opt_childExpr Optional child of this expression,373 * passed in as a hint for processing.374 * @param {goog.ds.Expr=} opt_prevExpr Optional preceding expression375 * (i.e. $A/B/C is previous expression to B/C) passed in as a hint for376 * processing.377 * @return {goog.ds.Expr} The expression object.378 * @private379 */380goog.ds.Expr.createInternal_ = function(opt_expr, opt_parts, opt_childExpr,381 opt_prevExpr) {382 var expr = opt_expr || opt_parts.join('/');383 var result = goog.ds.Expr.cache_[expr];384 if (result == null) {385 result = new goog.ds.Expr();386 result.setSource_(expr, opt_parts, opt_childExpr, opt_prevExpr);387 goog.ds.Expr.cache_[expr] = result;388 }389 return result;390};391/**392 * Cache of pre-parsed expressions393 * @private394 */395goog.ds.Expr.cache_ = {};396/**397 * Commonly used strings in expressions.398 * @enum {string}399 * @private400 */401goog.ds.Expr.String_ = {402 SEPARATOR: '/',403 CURRENT_NODE_EXPR: '.',404 EMPTY_EXPR: '',405 ATTRIBUTE_START: '@',406 ALL_CHILD_NODES_EXPR: '*|text()',407 ALL_ATTRIBUTES_EXPR: '@*',408 ALL_ELEMENTS_EXPR: '*',409 NAME_EXPR: 'name()',410 COUNT_EXPR: 'count()',411 POSITION_EXPR: 'position()',412 INDEX_START: '[',413 INDEX_END: ']',414 CAN_BE_EMPTY: '?'415};416/**417 * Standard expressions418 */419/**420 * The current node421 */422goog.ds.Expr.CURRENT = goog.ds.Expr.create(423 goog.ds.Expr.String_.CURRENT_NODE_EXPR);424/**425 * For DOM interop - all DOM child nodes (text + element).426 * Text nodes have dataName #text427 */428goog.ds.Expr.ALL_CHILD_NODES =429 goog.ds.Expr.create(goog.ds.Expr.String_.ALL_CHILD_NODES_EXPR);430/**431 * For DOM interop - all DOM element child nodes432 */433goog.ds.Expr.ALL_ELEMENTS =434 goog.ds.Expr.create(goog.ds.Expr.String_.ALL_ELEMENTS_EXPR);435/**436 * For DOM interop - all DOM attribute nodes437 * Attribute nodes have dataName starting with "@"438 */439goog.ds.Expr.ALL_ATTRIBUTES =440 goog.ds.Expr.create(goog.ds.Expr.String_.ALL_ATTRIBUTES_EXPR);441/**442 * Get the dataName of a node443 */444goog.ds.Expr.NAME = goog.ds.Expr.create(goog.ds.Expr.String_.NAME_EXPR);445/**446 * Get the count of nodes matching an expression447 */448goog.ds.Expr.COUNT = goog.ds.Expr.create(goog.ds.Expr.String_.COUNT_EXPR);449/**450 * Get the position of the "current" node in the current node list451 * This will only apply for datasources that support the concept of a current452 * node (none exist yet). This is similar to XPath position() and concept of453 * current node454 */...
Ds.js
Source:Ds.js
1if (loglvl) print("--> Ds.js");2var RPMNS_TYPE_RPMLIB = (1 << 9);3var GPSEE = require('rpmds');4var ds = new GPSEE.Ds('rpmlib');5ack("typeof ds;", "object");6ack("ds instanceof GPSEE.Ds;", true);7ack("ds.debug = 1;", 1);8ack("ds.debug = 0;", 0);9ack("ds.length", 25);10ack("ds.type", "Provides");11ack("ds.A", undefined);12ack("ds.buildtime = 1234;", 1234);13ack("ds.color = 4;", 4);14ack("ds.nopromote = 1;", 1);15ack("ds.nopromote = 0;", 0);16var deps = new Array();17var ix = 0;18for (let [key,val] in Iterator(ds)) {19 deps[ix++] = val;20}21ack("ix == ds.length", true);22ix = 023for (var [key,val] in Iterator(ds)) {24 ack("key == ix", true);25 ack("deps[ix] == val", true);26 ack("ds[ix] == val", true);27 ack("ds[ix] == deps[ix]", true);28 ix++;29}30ack("ix == ds.length", true);31ack("ds.ix = -1;", -1);32ack("ds[-1] == undefined", true);33ack("ds.N == undefined", true);34ack("ds.EVR == undefined", true);35ack("ds.F == undefined", true);36ack("ds.DNEVR == undefined", true);37ack("ds.NS == undefined", true);38ack("ds.refs == undefined", true);39ack("ds.result == undefined", true);40ack("ds.ix += 1;", 0);41ack("ds[0] != undefined", true);42ack("ds.ix", 0);43ack("ds.N == ds[0][0]", true);44ack("ds.N", "BuiltinAugeasScripts");45ack("ds.N == ds[0][0]", true);46ack("ds.EVR", "5.3-1");47ack("ds.EVR == ds[0][1]", true);48ack("ds.F", 16777224);49ack("ds.F == ds[0][2]", true);50ack("ds.DNEVR", "P rpmlib(BuiltinAugeasScripts) = 5.3-1");51ack("ds.NS == RPMNS_TYPE_RPMLIB", true);52ack("ds.refs += 1;", 1);53ack("ds.result = 1;", 1);54ack("ds.ix += 1;", 1);55ack("ds[1] != undefined", true);56ack("ds.ix", 1);57ack("ds.N", "BuiltinFiclScripts");58ack("ds.N == ds[1][0]", true);59ack("ds.EVR", "5.2-1");60ack("ds.EVR == ds[1][1]", true);61ack("ds.F", 16777224);62ack("ds.F == ds[1][2]", true);63ack("ds.DNEVR", "P rpmlib(BuiltinFiclScripts) = 5.2-1");64ack("ds.NS == RPMNS_TYPE_RPMLIB", true);65ack("ds.refs += 1;", 1);66ack("ds.result = 1;", 1);67// for (var [key,val] in Iterator(ds))68// print("\t"+key+": "+val);69// print(JSON.stringify(ds));70delete ds;...
Using AI Code Generation
1var wpt = require('webpagetest');2var wpt = new WebPageTest('www.webpagetest.org');3 if (err)4 console.log(err);5 console.log(data);6});71. Fork it (
Using AI Code Generation
1var wptools = require('./wptools.js');2var page = wptools.page('Albert Einstein');3page.get(function(err, resp) {4 console.log(resp);5 console.log(resp.data);6 console.log(resp.data.extract);7 console.log(resp.data.image);8 console.log(resp.data.imageinfo[0].url);9});10var wptools = require('./wptools.js');11var page = wptools.page('Albert Einstein');12page.get(function(err, resp) {13 console.log(resp);14 console.log(resp.data);15 console.log(resp.data.extract);16 console.log(resp.data.image);17 console.log(resp.data.imageinfo[0].url);18});
Using AI Code Generation
1var wptools = require('wptools');2var ds = require('wptools/lib/ds');3var article = wptools.page('Albert Einstein');4article.get(function(err, resp) {5 if (err) {6 console.log(err);7 } else {8 console.log(ds(resp));9 }10});11var wptools = require('wptools');12var ds = require('wptools/lib/ds');13var article = wptools.page('Albert Einstein');14article.get(function(err, resp) {15 if (err) {16 console.log(err);17 } else {18 console.log(ds(resp));19 }20});21var wptools = require('wptools');22var ds = require('wptools/lib/ds');23var article = wptools.page('Albert Einstein');24article.get(function(err, resp) {25 if (err) {26 console.log(err);27 } else {28 console.log(ds(resp));29 }30});31var wptools = require('wptools');32var ds = require('wptools/lib/ds');33var article = wptools.page('Albert Einstein');34article.get(function(err, resp) {35 if (err) {36 console.log(err);37 } else {38 console.log(ds(resp));39 }40});41var wptools = require('wptools');42var ds = require('wptools/lib/ds');43var article = wptools.page('Albert Einstein');44article.get(function(err, resp) {45 if (err) {46 console.log(err);47 } else {48 console.log(ds(resp));49 }50});51var wptools = require('wptools');52var ds = require('wptools/lib/ds');53var article = wptools.page('Albert Einstein');54article.get(function(err, resp) {55 if (err) {56 console.log(err);57 } else {58 console.log(ds(resp));59 }60});
Using AI Code Generation
1var wptool = require('wptool');2var wptoolPath = 'C:\\wptool\\wptool.exe';3var ds = new wptool(wptoolPath);4ds.getDevices(function(err, devices) {5 console.log(devices);6});7var wptool = require('wptool');8var wptoolPath = 'C:\\wptool\\wptool.exe';9var ds = new wptool(wptoolPath);10ds.getDevices(function(err, devices) {11 console.log(devices);12});13var wptool = require('wptool');14var wptoolPath = 'C:\\wptool\\wptool.exe';15var ds = new wptool(wptoolPath);16ds.getDevices(function(err, devices) {17 console.log(devices);18});19var wptool = require('wptool');20var wptoolPath = 'C:\\wptool\\wptool.exe';21var ds = new wptool(wptoolPath);22ds.getDevices(function(err, devices) {23 console.log(devices);24});25var wptool = require('wptool');26var wptoolPath = 'C:\\wptool\\wptool.exe';27var ds = new wptool(wptoolPath);28ds.getDevices(function(err, devices) {29 console.log(devices);30});31var wptool = require('wptool');32var wptoolPath = 'C:\\wptool\\wptool.exe';33var ds = new wptool(wptoolPath);34ds.getDevices(function(err, devices) {35 console.log(devices);36});37var wptool = require('wptool');38var wptoolPath = 'C:\\wptool\\wptool.exe';39var ds = new wptool(wptoolPath);40ds.getDevices(function(err, devices) {
Automation Testing Tutorials
Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
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