GraphProperty | API Reference | ArcGIS Maps SDK for JavaScript 4.30

Specifies the properties of for entity types and relationship types defined in the graph schema by the data model. Each instance of a specified graph object type will include these properties.

Examples

//The `EntityType`  'person' may have the following properties.
[{
  name: "first_name"
  alias: "First Name",
  defaultValue: null,
  defaultVisibility: true,
  editable: true,
  fieldType: "esriFieldTypeString",
  geometryType: "esriGeometryNull",
  hasM: false,
  hasZ: false,
  nullable: true,
  required: false,
  searchable: false,
  systemMaintained: false
},
{
  name: "age",
  alias: "Age",
  defaultValue: null,
  defaultVisibility: true,
  editable: true,
  fieldType: "esriFieldTypeNumber",
  geometryType: "esriGeometryNull",
  hasM: false,
  hasZ: false,
  nullable: false,
  required: false,
  searchable: true,
  systemMaintained: false
}]

//example of a RelationshipType definition including properties.
{
  "declaredClass": "esri.rest.knowledgeGraph.RelationshipType",
  "name": "employed_by",
  "alias": "Employed By",
  "role": "Regular",
  "strict": false,
  "properties": [{
    "declaredClass": "esri.rest.knowledgeGraph.GraphProperty",
    "name": "id",
    "alias": "id",
    "fieldType": "esriFieldTypeGUID",
    "geometryType": "esriGeometryNull",
    "hasM": false,
    "hasZ": false,
    "nullable": false,
    "editable": false,
    "required": true,
    "defaultVisibility": true,
    "systemMaintained": true,
    "role": "esriGraphPropertyRegular",
    "defaultValue": null
  },
  {
    "declaredClass": "esri.rest.knowledgeGraph.GraphProperty",
    "name": "start_date",
    "alias": "Start Date",
    "fieldType": "esriFieldTypeString",
    "geometryType": "esriGeometryNull",
    "hasM": false,
    "hasZ": false,
    "nullable": false,
    "editable": true,
    "required": true,
    "defaultVisibility": true,
    "systemMaintained": false,
    "role": "esriGraphPropertyRegular",
    "defaultValue": null
  }]
}

Constructors

GraphProperty Constructor new GraphProperty(properties)

Parameter

properties Object

optional

See the properties for a list of all the properties that may be passed into the constructor.

Property Overview

Any properties can be set, retrieved or listened to. See the Working with Properties topic.

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Type	Summary	Class
String	The display name for the property.	GraphProperty
String	The name of the class.	Accessor
unknown	Specifies a default value for the object type.	GraphProperty
Boolean	Specifies whether the property is visible by default.	GraphProperty
Boolean	Specifies whether the property is editable.	GraphProperty
String	Specifies the field type for the property.	GraphProperty
String	Specifies the geometry type for the property.	GraphProperty
Boolean	Specifies whether the property has an m-value.	GraphProperty
Boolean	Specifies whether property has a z-value.	GraphProperty
String	The name of the property.	GraphProperty
Boolean	Specifies whether the property can be `null`.	GraphProperty
Boolean	Specifies whether the property is required.	GraphProperty
String	Specifies the role of the property.	GraphProperty
Boolean	Specifies if the property is system maintained.	GraphProperty

Property Details

alias Property alias String

The display name for the property.

declaredClass Inherited Property declaredClass Stringreadonly Inherited from Accessor

The name of the class. The declared class name is formatted as esri.folder.className.

defaultValue Property defaultValue unknown

Specifies a default value for the object type.

defaultVisibility Property defaultVisibility Boolean

Specifies whether the property is visible by default.

Default Value:true

editable Property editable Boolean

Specifies whether the property is editable.

Default Value:true

fieldType Property fieldType String

Specifies the field type for the property.

Example

// possible field types
"esriFieldTypeSmallInteger"
"esriFieldTypeInteger"
"esriFieldTypeSingle"
"esriFieldTypeDouble"
"esriFieldTypeLong"
"esriFieldTypeString"
"esriFieldTypeDate"
"esriFieldTypeOID"
"esriFieldTypeGeometry"
"esriFieldTypeBlob"
"esriFieldTypeRaster"
"esriFieldTypeGUID"
"esriFieldTypeGlobalID"
"esriFieldTypeXML"

geometryType Property geometryType String

Specifies the geometry type for the property. Will not be present if property is not of type geometry.

hasM Property hasM Boolean

Specifies whether the property has an m-value. This only applies if the property is of type geometry.

hasZ Property hasZ Boolean

Specifies whether property has a z-value. This only applies if the property is of type geometry.

name Property name String

The name of the property.

nullable Property nullable Boolean

Specifies whether the property can be null.

Default Value:true

required Property required Boolean

Specifies whether the property is required.

Default Value:false

role Property role String

Specifies the role of the property. Entity types with the role document have properties with specific roles.

Example

{
	"declaredClass": "esri.rest.knowledgeGraph.EntityType",
	"name": "documents",
	"alias": "Documents",
	"role": "Regular",
	"strict": false,
	"properties": [
		{
			"declaredClass": "esri.rest.knowledgeGraph.GraphProperty",
			"name": "Name",
			"alias": "Name",
			"fieldType": "esriFieldTypeString",
			"geometryType": "esriGeometryNull",
			"hasM": false,
			"hasZ": false,
			"nullable": true,
			"editable": true,
			"required": false,
			"defaultVisibility": true,
			"systemMaintained": false,
			"role": "esriGraphPropertyDocumentName",
			"defaultValue": null
		},
		{
			"declaredClass": "esri.rest.knowledgeGraph.GraphProperty",
			"name": "text",
			"alias": "text",
			"fieldType": "esriFieldTypeString",d
			"geometryType": "esriGeometryNull",
			"hasM": false,
			"hasZ": false,
			"nullable": false,
			"editable": false,
			"required": true,
			"defaultVisibility": true,
			"systemMaintained": true,
			"role": "esriGraphPropertyDocumentText",
			"defaultValue": null
		}
	]
}

systemMaintained Property systemMaintained Boolean

Specifies if the property is system maintained.

Method Overview

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Return Type	Summary	Class
	Adds one or more handles which are to be tied to the lifecycle of the object.	Accessor
*	Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.	GraphProperty
Boolean	Returns true if a named group of handles exist.	Accessor
	Removes a group of handles owned by the object.	Accessor
Object	Converts an instance of this class to its ArcGIS portal JSON representation.	GraphProperty

Method Details

addHandles Inherited Method addHandles(handleOrHandles, groupKey) Inherited from Accessor

Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.

// Manually manage handles
const handle = reactiveUtils.when(
  () => !view.updating,
  () => {
    wkidSelect.disabled = false;
  },
  { once: true }
);

this.addHandles(handle);

// Destroy the object
this.destroy();

Parameters

handleOrHandles WatchHandle|WatchHandle []

Handles marked for removal once the object is destroyed.

groupKey *

optional

Key identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.

fromJSON Method fromJSON(json){*}static

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter 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.

hasHandles Inherited Method hasHandles(groupKey){Boolean} Inherited from Accessor

Returns true if a named group of handles exist.

Parameter

groupKey *

optional

A group key.

Returns

Type	Description
Boolean	Returns `true` if a named group of handles exist.

Example

// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
  obj.removeHandles("watch-view-updates");
}

removeHandles Inherited Method removeHandles(groupKey) Inherited from Accessor

Removes a group of handles owned by the object.

Parameter

groupKey *

optional

A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");

toJSON Method toJSON(){Object}

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns

Type	Description
Object	The ArcGIS portal JSON representation of an instance of this class.