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ChartService.js
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/* Copyright© 2000 - 2025 SuperMap Software Co.Ltd. All rights reserved.
* This program are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution and is available at http://www.apache.org/licenses/LICENSE-2.0.html.*/
import { Util as CommonUtil} from '../commontypes/Util';
import { DataFormat } from '../REST';
import { ChartQueryService } from './ChartQueryService';
import { ChartFeatureInfoSpecsService } from './ChartFeatureInfoSpecsService';
import { ChartAcronymClassifyService } from './ChartAcronymClassifyService';
import { ChartMaritimePcInfoService } from './ChartMaritimePcInfoService';
import { LayerInfoService } from './LayerInfoService';
import { GetGridCellInfosService } from './GetGridCellInfosService';
import { FeatureService } from './FeatureService';
import { GetFeaturesBySQLParameters } from './GetFeaturesBySQLParameters';
import { GetGridCellInfosParameters } from './GetGridCellInfosParameters';
import { GetFeaturesByBufferParameters } from './GetFeaturesByBufferParameters';
import { distance } from "@turf/distance";
import { Point } from '../commontypes/geometry/Point';
/**
* @class ChartService
* @category iServer Map Chart
* @classdesc 海图服务类。海图是一种以海洋水域及沿岸地物为主要绘制对象的地图，为航海的安全性提供必备的数据基础。<br>
* 此类提供方法：获取海图物标信息、查询海图服务。海图物标信息指的是描述各产品规范的物标的基本信息，包括物标的名称、类型及与该物标相关的属性等。
* @extends {ServiceBase}
* @example
* new ChartService(url,{
* fieldNameFormatter: function(fieldName){
* return fieldName + 'test'
* }
* }).queryChart(param,function(result){
* //doSomething
* })
* @param {string} url - 服务地址。
* @param {Object} options - 参数。
* @param {string} [options.proxy] - 服务代理地址。
* @param {boolean} [options.withCredentials] - 请求是否携带凭据。默认情况下，仅同源请求包含凭据。
* @param {boolean} [options.crossOrigin] - 是否允许跨域请求。
* @param {Object} [options.headers] - 请求头。
* @param {function} [options.fieldNameFormatter] - 对查询返回结果的字段名进行自定义。
* @param {function} [options.parseProperties] - 是否对查询返回的要素属性进行反序列化。
* @usage
*/
export class ChartService {
constructor(url, dataUrl, options) {
this.url = url;
if (typeof dataUrl === 'object') {
this.options = dataUrl || {};
} else {
this.dataUrl = dataUrl;
this.options = options || {};
}
}
/**
* @function ChartService.prototype.queryChart
* @description 查询海图服务。
* @param {ChartQueryParameters} params - 海图查询所需参数类。
* @param {RequestCallback} [callback] - 回调函数，该参数未传时可通过返回的 promise 获取结果。
* @param {DataFormat} resultFormat - 返回结果类型。
* @returns {Promise} Promise 对象。
*/
queryChart(params, callback, resultFormat) {
var me = this,
param = params,
format = me._processFormat(resultFormat);
var chartQueryService = new ChartQueryService(me.url, {
proxy: me.options.proxy,
withCredentials: me.options.withCredentials,
crossOrigin: me.options.crossOrigin,
headers: me.options.headers,
format: format,
fieldNameFormatter: me.options.fieldNameFormatter,
parseProperties: me.options.parseProperties
});
return chartQueryService.processAsync(param, callback);
}
/**
* @function ChartService.prototype.getChartFeatureInfo
* @description 获取海图物标信息服务。
* @param {RequestCallback} [callback] - 回调函数，该参数未传时可通过返回的 promise 获取结果。
* @returns {Promise} Promise 对象。
*/
getChartFeatureInfo(callback) {
var me = this;
var url = CommonUtil.urlPathAppend(me.url, 'chartFeatureInfoSpecs');
var chartFeatureInfoSpecsService = new ChartFeatureInfoSpecsService(url, {
proxy: me.options.proxy,
withCredentials: me.options.withCredentials,
crossOrigin: me.options.crossOrigin,
headers: me.options.headers
});
return chartFeatureInfoSpecsService.processAsync(callback);
}
/**
* @function ChartService.prototype.getChartAcronymClassify
* @version 11.2.0
* @description 获取海图产品规范物标分组信息服务。
* @param {RequestCallback} [callback] - 回调函数，该参数未传时可通过返回的 promise 获取结果。
* @returns {Promise} Promise 对象。
*/
getChartAcronymClassify(callback) {
var me = this;
var chartAcronymClassifyService = new ChartAcronymClassifyService(me.url, {
proxy: me.options.proxy,
withCredentials: me.options.withCredentials,
crossOrigin: me.options.crossOrigin,
headers: me.options.headers
});
return chartAcronymClassifyService.processAsync(callback);
}
_getDatasetNameByLayers(layers) {
if (!Array.isArray(layers)) {
return [];
}
let datasetNames = [];
layers.forEach(layer => {
if (layer.datasetInfo && layer.datasetInfo.type === 'GRID') {
datasetNames.push([layer.datasetInfo.dataSourceName, layer.datasetInfo.name]);
}
if (layer.subLayers && Array.isArray(layer.subLayers.layers)) {
const subNames = this._getDatasetNameByLayers(layer.subLayers.layers);
datasetNames.push(...subNames);
}
});
return datasetNames;
}
/**
* @function ChartService.prototype.getChartWaterDepth
* @version 12.1.0
* @description 获取海图水深信息。
* @param {ChartWaterDepthParameter} params - 海图水深查询所需参数类。
* @param {RequestCallback} [callback] 回调函数，该参数未传时可通过返回的 promise 获取结果。
* @returns {Promise} Promise 对象。
*/
getChartWaterDepth(params, callback) {
var me = this;
if (typeof me.dataUrl !== 'string') {
console.error('dataUrl is required');
return null;
}
var { X, Y } = params;
var queryPromises = [];
return new LayerInfoService(me.url).getLayersInfo().then(function (serviceResult) {
const datasetNames = me._getDatasetNameByLayers(serviceResult.result.subLayers.layers);
datasetNames.forEach(function (datasetName) {
// 栅格查询
var getGridCellInfosParam = new GetGridCellInfosParameters({
dataSourceName: datasetName[0],
datasetName: datasetName[1],
X: X,
Y: Y
});
var gridCellInfosService = new GetGridCellInfosService(me.dataUrl, {
proxy: me.options.proxy,
withCredentials: me.options.withCredentials,
crossOrigin: me.options.crossOrigin,
headers: me.options.headers
});
var query = gridCellInfosService.processAsync(getGridCellInfosParam, callback);
queryPromises.push(query);
});
return Promise.all(queryPromises).then(function (res) {
var datasetMap = {};
let result = { depth: null, uncertainty: null };
// 找到所有成功的查询
res.forEach(function (queryRes) {
if (queryRes && queryRes.result) {
var datasetName = queryRes.options.scope.datasetName;
datasetMap[datasetName] = queryRes;
}
});
// 如果某一处有多个图层，从datasetNames找到第一个，代表最顶层的
for (var j = 0; j < datasetNames.length; j++) {
const name = datasetNames[j][1];
if (!datasetMap.hasOwnProperty(name)) {
continue;
}
const dataset = datasetMap[name];
if (name.endsWith('_D') && !result.depth) {
result.depth = dataset;
} else if (name.endsWith('_U') && !result.uncertainty) {
result.uncertainty = dataset;
} else {
continue;
}
}
return result;
}).catch(function (err) {
throw err;
});
})
}
/**
* @function ChartService.prototype.getWaterLevel
* @version 12.1.0
* @description 获取S104海图水位和时间信息。
* @param {ChartWaterLevelParameter} params - S104海图水位和时间查询所需参数类。
* @param {RequestCallback} [callback] 回调函数，该参数未传时可通过返回的 promise 获取结果。
* @returns {Promise} Promise 对象。
*/
getWaterLevel(params, callback) {
var me = this;
if (typeof me.dataUrl !== 'string') {
console.error('dataUrl is required');
return null;
}
var featureService = new FeatureService(me.dataUrl, {
proxy: me.options.proxy,
withCredentials: me.options.withCredentials,
crossOrigin: me.options.crossOrigin,
headers: me.options.headers
});
var { dataSource, dataset, waterLevelDataset, timeDataset, coordinates, currentTime, startTime, endTime, timeIdKey } = params;
// 查询最近的水位点
var datasetNames = [dataSource + ':' + dataset];
return this.findNearestPointNew(coordinates, datasetNames).then(function (closestFeature) {
if (!closestFeature) {
return null;
}
var stationId = closestFeature.properties.STATIONID;
var cellId = closestFeature.properties.CELLID;
// 查询水位
var waterLevelSqlParam = new GetFeaturesBySQLParameters({
...params,
queryParameter: {
name: waterLevelDataset + '@' + dataSource,
attributeFilter: `STATIONID = '${stationId}' and CELLID = '${cellId}'`
},
datasetNames: [dataSource + ':' + waterLevelDataset]
});
return featureService.getFeaturesBySQL(waterLevelSqlParam, callback).then(function (waterLevelResult) {
var features = waterLevelResult.result.features.features;
// 查询时间
var timeSqlParam = new GetFeaturesBySQLParameters({
...params,
queryParameter: {
name: timeDataset + '@' + dataSource,
attributeFilter: `CELLID = '${cellId}'`
},
datasetNames: [dataSource + ':' + timeDataset]
});
return featureService.getFeaturesBySQL(timeSqlParam, callback).then(function (timeResult) {
var features1 = timeResult.result.features.features;
var timeIDMap = {};
features1.forEach(function (feature) {
timeIDMap[feature.properties[timeIdKey]] = feature.properties.TIMEPOINT;
});
features.forEach(function (feature) {
var timeID = feature.properties[timeIdKey];
if (timeIDMap[timeID]) {
feature.properties.TIMEPOINT = timeIDMap[timeID];
} else {
console.error(`timeID ${timeID} , TIMEPOINT not found'`);
feature.properties.TIMEPOINT = null;
}
});
// 过滤时间范围,也可考虑用attributeFilter过滤
if (currentTime || startTime || endTime) {
features = features.filter(feature => {
const timepoint = feature.properties.TIMEPOINT;
if (currentTime) {
return timepoint === currentTime;
}
const afterStart = !startTime || timepoint >= startTime;
const beforeEnd = !endTime || timepoint <= endTime;
return afterStart && beforeEnd;
});
}
return { features, stationFeature: closestFeature };
});
});
});
}
/**
* @function ChartService.prototype.getWLTimeRange
* @version 12.1.0
* @description 获取S104海图时间范围。
* @param {ChartWLTimeRangeParameter} params - S104海图时间范围查询所需参数类。
* @param {RequestCallback} [callback] 回调函数，该参数未传时可通过返回的 promise 获取结果。
* @returns {Promise} Promise 对象。
*/
getWLTimeRange(params, callback) {
var me = this;
if (typeof me.dataUrl !== 'string') {
console.error('dataUrl is required');
return null;
}
var featureService = new FeatureService(me.dataUrl, {
proxy: me.options.proxy,
withCredentials: me.options.withCredentials,
crossOrigin: me.options.crossOrigin,
headers: me.options.headers
});
var { dataset, dataSource, timeDataset, idKey } = params;
var sqlParam = new GetFeaturesBySQLParameters({
queryParameter: {
name: dataset + '@' + dataSource
},
datasetNames: [dataSource + ':' + dataset],
returnFeaturesOnly: true,
fromIndex: 0,
toIndex: 1,
expectCount: -1
});
return featureService.getFeaturesBySQL(sqlParam).then(function (serviceResult) {
var idKeyVal = serviceResult.result.features.features[0].properties[idKey];
var attributeFilter = idKey + " = " + "'" + idKeyVal + "'";
var timeSqlParam = new GetFeaturesBySQLParameters({
queryParameter: {
name: timeDataset + '@' + dataSource,
attributeFilter: attributeFilter,
orderBy: "TIMEPOINT"
},
datasetNames: [dataSource + ':' + timeDataset],
toIndex: -1,
expectCount: -1
});
return featureService.getFeaturesBySQL(timeSqlParam, callback).then(function (serviceResult1) {
return serviceResult1;
})
}).catch(function (err) {
throw err;
});
}
async findNearestPointNew(coordinates, datasetNames) {
const [x, y] = coordinates
if (x < -180.0 || x > 180.0 || y < -90 || y > 90){
return
}
const point = new Point([x, y])
const bufferParam = new GetFeaturesByBufferParameters({
datasetNames: datasetNames,
bufferDistance: 0.03,
geometry: point
})
const serviceResult = await new FeatureService(this.dataUrl).getFeaturesByBuffer(bufferParam)
if (serviceResult.result.features.features.length > 0) {
// 变量用于保存最近的点
let closestFeature = null
let minDistance = Infinity // 初始设置为最大距离
// 遍历所有的点数据，找出距离最近的点
serviceResult.result.features.features.forEach((pointData) => {
const dis = distance(coordinates, pointData.geometry.coordinates)
// 更新最近点
if (dis < minDistance) {
minDistance = dis
closestFeature = pointData
}
})
return closestFeature
}
}
/**
* @function ChartService.prototype.getChartMaritimePcInfo
* @version 12.1.0
* @description 展示海图S100图示目录支持的版本和其参数信息。
* @param {RequestCallback} [callback] - 回调函数，该参数未传时可通过返回的 promise 获取结果。
* @returns {Promise} Promise 对象。
*/
getChartMaritimePcInfo(callback) {
var me = this;
var chartMaritimePcInfoService = new ChartMaritimePcInfoService(me.url, {
proxy: me.options.proxy,
withCredentials: me.options.withCredentials,
crossOrigin: me.options.crossOrigin,
headers: me.options.headers
});
return chartMaritimePcInfoService.processAsync(callback);
}
_processFormat(resultFormat) {
return (resultFormat) ? resultFormat : DataFormat.GEOJSON;
}
}