Query Related Records (Map Service/Dynamic Layer)

URL:: https://<dynamic-layer-url>/queryRelatedRecords
Methods:: GET
Required Capability:: Data
Version Introduced:: 10.1

Description

The query-related records operation is performed on a dynamic layer / table resource, of type mapLayer . The result of this operation is one or more feature sets grouped by source layer / table object IDs. Each feature set contains feature objects including the values for the fields requested by the user. For related layers, if you request geometry information, the geometry of each feature is also returned in the feature set. For related tables, the feature set does not include geometries.

You can provide arguments to the query-related records operation as query parameters defined in the parameters table below.

New at 10.5

Supports datum transformation.

Request parameters

Parameter	Details
`layer` (Required)	Defines a dynamic layer. Only dynamic map layers are supported. When using this parameter, keep the following in mind: The `id` and `definitionExpression` properties are optional. Use `gdbVersion` on a dynamic map layer definition to specify an alternate geodatabase version. Use dark colors for code blocksCopy `1 2 3 4 5 { "id": <layerOrTableId>, // optional "source": <layer source>, // only dynamic map layers are supported "definitionExpression": "<definitionExpression>" // optional }` Example Use dark colors for code blocksCopy `1 2 3 4 5 6 7 8 9 { "id": 101, "source": { "type": "mapLayer", "mapLayerId": 0, "gdbVersion": "SDE.DynamicLayers" }, "definitionExpression": "LotSize > 5000" }`
`objectIds`	The object IDs of this layer or table to be queried. Records related to these object IDs will be queried. Syntax Use dark colors for code blocksCopy `1 objectIds=<objectId1>, <objectId2>` Example Use dark colors for code blocksCopy `1 objectIds=37, 462`
`relationshipId`	The ID of the relationship to be queried. The `relationships` that this layer/table participates in are included in the Layer / Table Resource response. Records in tablesor layers corresponding to the related table or layer of the relationship are queried. Example Use dark colors for code blocksCopy `1 relationshipsId=4`
`outFields`	The list of fields from the related table or layer to be included in the returned feature set. This list is a comma-delimited list of field names. If you specify the shape field in the list of return fields, it is ignored. To request geometry, set `returnGeometry` to `true` . You can also specify the wildcard "`` " as the value of this parameter. In this case, the results will include all the field values. Example Use dark colors for code blocksCopy `1 2 3 4 outFields=AREANAME,ST,POP2000 //Wildcard usage outFields=`
`definitionExpression`	The definition expression to be applied to the related table or layer. From the list of records that are related to the specified `objectIds` , only those records that conform to this expression will be returned. Example Use dark colors for code blocksCopy `1 definitionExpression=POP2000 > 100000`
`returnGeometry`	If `true` , the feature set includes the geometry associated with each feature. The default is `true` . Note This parameter only applies to related layers. It will be ignored for related tables. Values: `true` \| `false`
`maxAllowableOffset`	Added at 10.0. Specifies the `maxAllowableOffset` to be used for generalizing geometries returned by the `queryRelatedRecords` operation. The `maxAllowableOffset` is in the units of the `outSR` . If `outSR` is not specified, `maxAllowableOffset` is assumed to be in the unit of the spatial reference of the map. Example Use dark colors for code blocksCopy `1 maxAllowableOffset=2`
`geometryPrecision`	Specifies the number of decimal places in the response geometries by the `queryRelatedRecords` operation. This applies to x- and y-values only (not m- or z-values). Example Use dark colors for code blocksCopy `1 geometryPrecision=3`
`outSR`	Specifies the spatial reference of the returned geometry. The spatial reference can be specified as a well-known ID or as a spatial reference json object. If `outSR` is not specified, the geometry is returned in the spatial reference of the map. Note This parameter only applies to related layers. It will be ignored for related tables.
`returnZ`	If `true` , z-values will be included in the results if the features have z-values. Otherwise, z-values are not returned. The default is `false` . Note This parameter only applies if `returnGeometry` is `true` . Values: `true` \| `false`
`returnM`	If `true` , m-values will be included in the results if the features have m-values. Otherwise, m-values are not returned. The default is `false` . Note This parameter only applies if `returnGeometry` is `true` . Values: `true` \| `false`
`datumTransformation`	Added at 10.5. Applies a datum transformation while projecting geometries in the results when `outSR` is different than the layer's spatial reference. Note When specifying a transformation, you need to think about which datum transformation is best applicable to project the layer (not the map service) to the `outSR` . The `sourceSpatialReference` property in the layer resource reports which spatial reference features are stored in the source dataset. For a list of valid datum transformation ID values and well-known text strings, see Using spatial references. For more information on datum transformation, see the `transformation` parameter in the Project operation. Syntax Use dark colors for code blocksCopy `1 2 3 datumTransformation=wkid1 datumTransformation={<dt1>}` Examples Use dark colors for code blocksCopy `1 2 3 4 5 //To apply a transformation datumTransformation=1623 //To apply a composite transformation datumTransformation={"geoTransforms":[{"wkid":108889,"transformForward":true},{"wkid":1622,"transformForward":false}]}`
`f`	The response format. The default response format is `html` . Values: `html` \| `json` \| `pjson`

Example usage

The following is a sample request URL for the queryRelatedRecords operation:

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https://machine.domain.com/webadaptor/rest/services/Petroleum/KSPetro/MapServer/dynamicLayer/queryRelatedRecords?layer={"id":101,"definitionExpression":"\"sub_region\" like 'Pacific'","source":{"type":"mapLayer","mapLayerId":3}}&objectIds=3,4,5&relationshipId=2&returnGeometry=true&outFields=*&f=html

JSON Response syntax

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{
  "geometryType": "<geometryType>", //if records include geometry
  "spatialReference": <spatialReference>, //if records include geometry
  "hasZ": <true|false>, //added in 10.1
  "hasM": <true|false>, //added in 10.1
  "fields": [
    {
      "name": "<fieldName1>",
      "type": "<fieldType1>",
      "alias": "<fieldAlias1>",
      "length": "<length1>"
    },
    {
      "name": "<fieldName2>",
      "type": "<fieldType2>",
      "alias": "<fieldAlias2>",
      "length": "<length2>"
    }
  ],
  "relatedRecordGroups": [
    {
      "objectId": <objectId1>,
      "relatedRecords": [ //features may include geometry for related layers only
        <relatedFeature11>,
        <relatedFeature12>
      ]
    },
    {
      "objectId": <objectId2>,
      "relatedRecords": [
        <relatedFeature21>,
        <relatedFeature22>
      ]
    }
  ]
}

JSON Response example

When viewing the JSON response for your request, keep the following in mind:

The domains member is not included in field information objects returned with the response.
The JSON response contains an optional property exceededTransferLimit . This property will be true only if the number of records exceeds the maximum number configured by an administrator.

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{
  "geometryType": "esriGeometryPolygon",
  "spatialReference": {
    "wkid": 4267
  },
  "fields": [
    {
      "name": "OBJECTID",
      "type": "esriFieldTypeOID",
      "alias": "OBJECTID"
    },
    {
      "name": "FIELD_KID",
      "type": "esriFieldTypeString",
      "alias": "FIELD_KID",
      "length": 25
    },
    {
      "name": "APPROXACRE",
      "type": "esriFieldTypeDouble",
      "alias": "APPROXACRE"
    },
    {
      "name": "FIELD_NAME",
      "type": "esriFieldTypeString",
      "alias": "FIELD_NAME",
      "length": 150
    }
  ],
  "relatedRecordGroups": [
    {
      "objectId": 3,
      "relatedRecords": [
        {
          "attributes": {
            "OBJECTID": 5540,
            "FIELD_KID": "1000147595",
            "APPROXACRE": 95929,
            "FIELD_NAME": "LOST SPRINGS",
          },
          "geometry": {
            "rings": [
              [
                [
                  -96.929599633999942,
                  38.52426809800005
                ],
                [
                  -96.929602437999961,
                  38.522448437000037
                ],
                [
                  -96.92959118999994,
                  38.529723252000053
                ],
                [
                  -96.929594022999936,
                  38.527905578000059
                ],
                [
                  -96.929596839999988,
                  38.526087119000067
                ],
                [
                  -96.929599633999942,
                  38.52426809800005
                ]
              ]
            ]
          }
        }
      ]
    }
  ]
}