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FieldStatisticService.js
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105 lines (88 loc) · 3.7 KB
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import {SuperMap} from '../SuperMap';
import {CommonServiceBase} from './CommonServiceBase';
import {Util} from '../commontypes/Util';
import './FieldStatisticsParameters';
/**
* @class SuperMap.FieldStatisticService
* @category iServer Data Field
* @classdesc 字段查询统计服务类。用来完成对指定数据集指定字段的查询统计分析，即求平均值，最大值等。
* @extends SuperMap.CommonServiceBase
* @param url - {string} 服务的访问地址。如访问World Map服务，只需将url设为:http://localhost:8090/iserver/services/data-world/rest/data 即可。
* @param options - {Object} 可选参数。</br>
* eventListeners - {Object} 事件监听器对象。有processCompleted属性可传入处理完成后的回调函数。processFailed属性传入处理失败后的回调函数。<br>
* serverType - {SuperMap.ServerType} 服务器类型，iServer|iPortal|Online。<br>
* format -{SuperMap.DataFormat} 查询结果返回格式，目前支持iServerJSON 和GeoJSON两种格式。参数格式为"ISERVER","GEOJSON"。
* datasource - {string} 数据集所在的数据源名称。</br>
* dataset - {string} 数据集名称。</br>
* field - {string} 查询统计的目标字段名称。</br>
* statisticMode - {StatisticMode} 字段查询统计的方法类型。</br>
* @example
* var myService = new SuperMap.FieldStatisticService(url, {eventListeners: {
* "processCompleted": fieldStatisticCompleted,
* "processFailed": fieldStatisticError
* }，
* datasource: "World",
* dataset: "Countries",
* field: "SmID",
* statisticMode: StatisticMode.AVERAGE
* };
*/
export class FieldStatisticService extends CommonServiceBase {
constructor(url, options) {
super(url, options);
/**
* @member SuperMap.FieldStatisticService.prototype.datasource -{string}
* @description 数据集所在的数据源名称。
*/
this.datasource = null;
/**
* @member SuperMap.FieldStatisticService.prototype.dataset -{string}
* @description 数据集名称。
*/
this.dataset = null;
/**
* @member SuperMap.FieldStatisticService.prototype.field -{string}
* @description 查询统计的目标字段名称。
*/
this.field = null;
/**
* @member SuperMap.FieldStatisticService.prototype.statisticMode -{string}
* @description 字段查询统计的方法类型。
*/
this.statisticMode = null;
if (options) {
Util.extend(this, options);
}
this.CLASS_NAME = "SuperMap.FieldStatisticService";
}
/**
* @function SuperMap.FieldStatisticService.prototype.destroy
* @override
*/
destroy() {
super.destroy();
var me = this;
me.datasource = null;
me.dataset = null;
me.field = null;
me.statisticMode = null;
}
/**
* @function SuperMap.FieldStatisticService.prototype.processAsync
* @description 执行服务，进行指定字段的查询统计。
*/
processAsync() {
var me = this,
end = me.url.substr(me.url.length - 1, 1),
fieldStatisticURL = "datasources/" + me.datasource + "/datasets/" + me.dataset + "/fields/" + me.field + "/" + me.statisticMode;
me.url += (end == "/") ? fieldStatisticURL + ".json?" : "/" + fieldStatisticURL + ".json?";
me.request({
method: "GET",
data: null,
scope: me,
success: me.serviceProcessCompleted,
failure: me.serviceProcessFailed
});
}
}
SuperMap.FieldStatisticService = FieldStatisticService;