topic Re: FeatureLayer. queryFeatures result is not return all attributes,How to set outFields? in Kotlin Maps SDK Questions

FeatureLayer. queryFeatures result is not return all attributes,How to set outFields?

mqllin — Fri, 07 Jul 2023 01:04:43 GMT

FeatureLayer. queryFeatures result is not return all attributes,How to set outFields?

I used ArcGis Kotlin SDK 200.1.0

For example this image:

This FaetureLayer have fields:"objectid","sbm","code","name","dwdm","code","hzjh".But when I run queryFeatures or selectFeatures,only return fields "code","name" and "objectid".

I found that the outFields in QueryParameters is not set by internal methods.

How can I get the full attribute result featrues?


            val queryParams = QueryParameters().apply {
                whereClause = "name LIKE '%$name%'"
            }

//            layer.featureTable?.queryFeatures(queryParams)
            val queryResult: Result<FeatureQueryResult> = featureTable.queryFeatures(queryParams)
//            val queryResult: Result<FeatureQueryResult> = (layer as FeatureLayer).selectFeaturesWithFields()

            queryResult.onSuccess { res ->
                Log.d("fields", res.fields.toString())
                res.fields.forEach {
                    Log.d("for", it.toJson())
                }
                res.forEach {
                    it.attributes.forEach {
                        Log.d("attributes", "${it.key}-${it.value}")
                    }
                }
                val features = res.toList()
                if (features.isNotEmpty()) {
                    features[0].attributes.forEach {
                        Log.d("features", "${it.key}-${it.value}")
                    }
                }
                val layerResult = object : SearchFeatureSet {
                    override var name = layer.name
                    override var layer = layer
                    override var features = features
                    override var showMore = false
                }
                results.add(layerResult)
                layer.clearSelection()
            }

Re: FeatureLayer. queryFeatures result is not return all attributes,How to set outFields?

RamaChintapalli — Mon, 10 Jul 2023 15:58:27 GMT

Hi,

You can use the following method to receive all the features loaded, alternatively you can also individually load a specific feature to load only its attributes.

suspend fun queryFeatures( parameters: QueryParameters, queryFeatureFields: QueryFeatureFields ): Result<FeatureQueryResult>

and use QueryFeatureFields.LOADALL.

Thanks
Rama

Re: FeatureLayer. queryFeatures result is not return all attributes,How to set outFields?

mqllin — Tue, 11 Jul 2023 09:46:14 GMT

Thank you for your help,I have modified my request code,and now I can query all the attributes!

I got FeatureLayer.FeatureTable as to ServiceFeatureTable

```

val queryResult: Result<FeatureQueryResult> = (featureTable as ServiceFeatureTable).queryFeatures(queryParams,QueryFeatureFields.LoadAll)

```

In addition, one thing I want to ask, why not allow Settings in the FeatureTable QueryFeatureFields?