RelationshipQuery
require(["esri/tasks/support/RelationshipQuery"], function(RelationshipQuery) { /* code goes here */ });esri/tasks/support/RelationshipQueryThis class defines parameters for executing queries for related records from a layer. Once a RelationshipQuery object's properties are defined, it can then be passed into the QueryTask.executeRelationshipQuery() and FeatureLayer.queryRelatedFeatures() methods, which will return FeatureSets grouped by source layer/table objectIds.
- See also:
Constructors
- new RelationshipQuery(properties)
- Parameter:properties ObjectoptionalSee the properties for a list of all the properties that may be passed into the constructor. 
Property Overview
| Name | Type | Summary | Class | |
|---|---|---|---|---|
| String | The name of the class.more details | more details | Accessor | |
| String | The definition expression to be applied to the related table or layer.more details | more details | RelationshipQuery | |
| String | Specify the geodatabase version to query.more details | more details | RelationshipQuery | |
| Number | Specify the number of decimal places for the geometries returned by the query operation.more details | more details | RelationshipQuery | |
| Date | The historic moment to query.more details | more details | RelationshipQuery | |
| Number | The maximum allowable offset used for generalizing geometries returned by the query operation.more details | more details | RelationshipQuery | |
| Number[] | An array of objectIds for the features in the layer/table being queried.more details | more details | RelationshipQuery | |
| String[] | Attribute fields to include in the FeatureSet.more details | more details | RelationshipQuery | |
| SpatialReference | The spatial reference for the returned geometry.more details | more details | RelationshipQuery | |
| Number | The ID of the relationship to be queried.more details | more details | RelationshipQuery | |
| Boolean | If  | more details | RelationshipQuery | 
Property Details
- Since: ArcGIS API for JavaScript 4.7
- The name of the class. The declared class name is formatted as - esri.folder.className.
- definitionExpressionString
- The definition expression to be applied to the related table or layer. Only records in the list of objectIds that satisfy the definition expression are queried for related records. 
- gdbVersionStringSince: ArcGIS API for JavaScript 4.7
- Specify the geodatabase version to query. 
- geometryPrecisionNumber
- Specify the number of decimal places for the geometries returned by the query operation. 
- historicMomentDateSince: ArcGIS API for JavaScript 4.7
- The historic moment to query. This parameter applies only if the - supportsHistoricMomenton FeatureLayer property of the layer is set to- true.
- maxAllowableOffsetNumber
- The maximum allowable offset used for generalizing geometries returned by the query operation. The offset is in the units of - outSpatialReference. If- outSpatialReferenceis not defined, the spatialReference of the view is used.
- objectIdsNumber[]
- An array of objectIds for the features in the layer/table being queried. 
- outFieldsString[]
- Attribute fields to include in the FeatureSet. Fields must exist in the map layer. You must list actual field names rather than the alias names. You are, however, able to use the alias names when you display the results. - When specifying the output fields, you should limit the fields to only those you expect to use in the query or the results. The fewer fields you include, the faster the response will be. - Each query must have access to the Shape and ObjectId fields for a layer. However, your list of fields does not need to include these two fields. Example:- query.outFields = [ "NAME", "STATE_ABBR", "POP04" ];
- outSpatialReferenceSpatialReferenceautocast
- The spatial reference for the returned geometry. If - outSpatialReferenceis not defined, the spatialReference of the view is used.
- relationshipIdNumber
- The ID of the relationship to be queried. The ids for the relationships the table or layer participates in are listed in the ArcGIS Services directory. The ID of the relationship to be queried. The relationships that this layer/table participates in are included in the Feature Service Layer resource response. Records in tables/layers corresponding to the related table/layer of the relationship are queried. 
- returnGeometryBoolean
- If - true, each feature in the FeatureSet includes the geometry. Set to- false(default) if you do not plan to include highlighted features on a map since the geometry makes up a significant portion of the response.- Default Value:false
 
Method Overview
| Name | Return Type | Summary | Class | |
|---|---|---|---|---|
| RelationshipQuery | Creates a deep clone of RelationshipQuery object.more details | more details | RelationshipQuery | |
| * | Creates a new instance of this class and initializes it with values from a JSON object generated from a product in the ArcGIS platform.more details | more details | RelationshipQuery | |
| Object | Converts an instance of this class to its ArcGIS portal JSON representation.more details | more details | RelationshipQuery | 
Method Details
- clone(){RelationshipQuery}Since: ArcGIS API for JavaScript 4.7
- Creates a deep clone of RelationshipQuery object. Returns:- Type - Description - RelationshipQuery - A new instance of a RelationshipQuery object equal to the object used to call - .clone().
- fromJSON(json){*}static
- Creates a new instance of this class and initializes it with values from a JSON object generated from a product in the ArcGIS platform. The object passed into the input - jsonparameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.Parameter:json Object- A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects. Returns:- Type - Description - * - Returns a new instance of this class. 
- toJSON(){Object}
- Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() topic in the Guide for more information. Returns:- Type - Description - Object - The ArcGIS portal JSON representation of an instance of this class.