Set Out Fields.

cadgism

Hi

I want to return only few Attribute fields of the feature instead of All the fields  as it makes the query slower. In Android SDk 10.xyz there was a way to limit the outfields by

Query query <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">Query</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
query<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setOutFields</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">String</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="punctuation token">{</SPAN><SPAN class="string token">"Filed1"</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"Field2"</SPAN><SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

In 100.x the

QueryParameters <SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

has no such method as setOutfields. how can I do this please !!

Thanks

Shelly Gill

Hi,

When you call the queryFeaturesAsync method on ServiceFeatureTable, you can indicate which fields you want to be included in the returned features:

• this overload of queryFeaturesAsync lets you indicate you want IDS_ONLY, MINIMUM (fields that are needed for things like rendering, labeling), or LOAD_ALL attributes - see queryFeaturesAsync (QueryParameters queryParameters, ServiceFeatureTable.QueryFeatureFields queryFields) 

public ListenableFuture<FeatureQueryResult> queryFeaturesAsync (QueryParameters queryParameters, ServiceFeatureTable.QueryFeatureFieldsqueryFields)

• alternatively, if you are using MANUAL_CACHE mode for the ServiceFeatureTable, then the populateFromServiceAsync method allows you to control the specific fields loaded for all features present in the table (as well as explicitly controlling which features get requested from the service into the local in-memory table) - see this sample arcgis-runtime-samples-android/java/service-feature-table-manualcache at master · Esri/arcgis-runtime-samples-android · …  

public ListenableFuture<FeatureQueryResult> populateFromServiceAsync (QueryParameters query, boolean clearCache, Iterable<String> outFields)

Hope this info helps. Regards,

Shelly