import InfoQuery from 'kqwebmap-project/src_en/query/InfoQuery.js'

public class | source

InfoQuery

Query information of the specific layers in the particular range.

See:

./manual/query.html

Example:

var infoQuery = KQ.Query.InfoQuery.getInstance();
var options = {
   url: 'http://172.16.1.157:8699/KQGis/rest/services/zy',
   layerId: 145,
   reqcount: '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: '',
 };

infoQuery.queryAsync(options,
function query_good () {
   console.log('query_good');
 },
function query_error () {
   console.log('query_error');
 });

Static Method Summary

Static Public Methods
public static	getInstance(): InfoQuery Get instance object (Singleton mode)

Method Summary

Public Methods
public	data(): Object[] Get data
public	errorMsg(): String Get last error message
public	isLastError(): Boolean Whether server return error
public	queryAsync(options: Object, function_good: function(): null, function_error: function(): null): Promise<TResult> Query information from the server.

Static Public Methods

public static getInstance(): InfoQuery source

Get instance object (Singleton mode)

Return:

InfoQuery

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

Query information from the server.

Params:

Name	Type	Attribute	Description
options	Object		query 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		fields for return, return all fields by default
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>