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Accessing Relationship table from a Map Service

AfrozAlam

I am developing an iOS app on Xcode 14.2 using Swift 5.7 and ArcGIS Runtime SDK for iOS 100.15.

I am using a map service of Census Data (link as below).

https://khazna.gisqatar.org.qa/fed/rest/services/GISUDBAP/QSA_Census_District_2020/MapServer/

I want to access the Relationship table as listed in attached file QSA.Census_District_2020 (0). I couldn't find any code on developer community to do so. I would be very grateful if anyone can help me in this regards.

BLD_Res_Bld_Type_2020_DL (0) -- Related To: BLD_Res_Bldg_Type_2020_DL (210)

Thanks & regards,

Query to ESRI Developer Community.pdf

Code_Relationship Table.pdf

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Accepted answers

DavidFeinzimer

Hi there, thank you for reaching out and sorry for the extended reply time.

The relationships table can be accessed by inspecting the mapImageSublayers property of a AGSArcGISMapImageLayer. Each sublayer will have sublayer info that contains a set of relationship infos.

I'll attach a modified version of the view controller that prototypes this out. It will print the following:

Loading MapServer...
Loaded
BLD_Res_Bld_Type_2020_DL
Est_Bldg_Type_2020_DL
Pop_Sex_2020_DL
Pop_Above15_Less15_2020_DL
HousingUnit_Density_2020_DL
Pop_NEcoRel2WrkFrce2020_DL
Pop_Abv10_Edu_Lev_2020_DL
BLD_BuildingStorey_2020_DL
Pop_Occupation_2020_DL
HousingUnit_Use_2020_DL
Est_by_Sector_2020_DL
Pop_Abv15MF_EcNEco_2020_DL
HousingUnit_Type_2020_DL
Pop_Sector_2020_DL
HHold_Indi_FamSze_2020_DL
Pop_AgeGroups_2020_DL

I hope this helps!

solution.zip

All comments

AfrozAlam

Hi David,

I want to get the values of ENAME, ANAME & DIST_NO fields from table Pop_Sex_2020_DL from URL https://khazna.gisqatar.org.qa/fed/rest/services/GISUDBAP/QSA_Census_District_2020/MapServer/

Thanks,

Afroz

DavidFeinzimer

Hi Afroz, can you please indicate which URL value your using for the distService variable?

Thank you,

David

AfrozAlam

Dear David Feinzimer,

Thanks a lot for your help. But now I am facing another issue. I am trying to populate a table with all the fields of a table Pop_Sex_2020_DL. It is populating but only one field though it has 3 fields. I am attaching the code with screen shots. I would be very grateful to you for your further help in this regard.

Thanks & regards

FeatureServer.pdf

RelatedFeaturesListViewController.pdf

SubLayerViewController.pdf

AfrozAlam

Dear David Feinzimer,

Thanks a lot for your great help.

Afroz

DavidFeinzimer

Hi there, thank you for reaching out and sorry for the extended reply time.

I'll attach a modified version of the view controller that prototypes this out. It will print the following:

Loading MapServer...
Loaded
BLD_Res_Bld_Type_2020_DL
Est_Bldg_Type_2020_DL
Pop_Sex_2020_DL
Pop_Above15_Less15_2020_DL
HousingUnit_Density_2020_DL
Pop_NEcoRel2WrkFrce2020_DL
Pop_Abv10_Edu_Lev_2020_DL
BLD_BuildingStorey_2020_DL
Pop_Occupation_2020_DL
HousingUnit_Use_2020_DL
Est_by_Sector_2020_DL
Pop_Abv15MF_EcNEco_2020_DL
HousingUnit_Type_2020_DL
Pop_Sector_2020_DL
HHold_Indi_FamSze_2020_DL
Pop_AgeGroups_2020_DL

I hope this helps!

solution.zip

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