Reference Source 
import OverlayAnalysis from 'kqwebmap-project/src_en/query/OverlayAnalysis.js'
public class | source

OverlayAnalysis

Overlay analysis of the specific layers from the server.

See:

Example:

var overlay_analysis = KQ.Query.OverlayAnalysis.getInstance();
console.log(overlay_analysis);
try {
   var options = {
     url: 'http://172.16.1.157:8699/KQGis/rest/services/zy',
     layerId: 145,
     pageSize: '200',
     sr: '',
     geometry: '{"type":"Polygon","coordinates":[[[104.94105475249448,29.97276304931208],[104.94105475249448,30.028839993667194],[105.00551176529433,30.028839993667194],[105.00551176529433,29.97276304931208],[104.94105475249448,29.97276304931208]]]}',
     fields: 'OBJECTID,XZBM,BSM,YSDM,JXLX,JXXZ,JXSM,BGRQ',
     f: 'json',
     where: '',
   };

   overlay_analysis.queryAsync(options,
     function query_good () {
       console.log('query_good');

       var data = overlay_analysis.data();
       console.log('overlay analysis data.length:' + data.length);

       data.forEach(function (d) {
         console.log(d.properties);
       })
     },
     function query_error () {
       console.log('query_error');
     });
 }
catch (e) {
   console.log('catch error:' + e);
 }

Static Method Summary

Static Public Methods
public static

Get instance object (Singleton mode)

Method Summary

Public Methods
public

data(): Object[]

Get data
public

Get last error message
public

Whether server return error
public

queryAsync(options: Object, function_good: function(): null, function_error: function(): null): Promise<TResult>

Overlay analysis of the specific layers from the server.

Static Public Methods

public static getInstance(): OverlayAnalysis source

Get instance object (Singleton mode)

Return:

OverlayAnalysis

Public Methods

public data(): Object[] source

Get data

Return:

Object[]

public errorMsg(): String source

Get last error message

Return:

String

public isLastError(): Boolean source

Whether server return error

Return:

Boolean

public queryAsync(options: Object, function_good: function(): null, function_error: function(): null): Promise<TResult> source

Overlay analysis of the specific layers from the server.

Params:

NameTypeAttributeDescription
options Object

Overlay analysis options
options.url String

Service url
options.startindex Number

Start index of result
options.layerId String

Layer id of querying
options.reqcount Number

Upper limit of result
options.geoSRS String

Reference system of the input coordinate
options.outSRS String

Reference system of the output coordinate
options.geometry String

The coordinates of the query range
options.fields String

The fields of result
options.where String

Query sql condition
function_good function(): null

The function will run after querying successfully.
function_error function(): null

The function will run after querying unsuccessfully.

Return:

Promise<TResult>