API Reference > presentation-common > All presentation-common Classes Name Description Content A data structure that contains the Descriptor and a list of Item Descriptor Data structure that describes content: fields, sorting, filtering, format, etc. Field Describes a single content field. Item A data structure that represents a single content record. KeySet A class that holds multiple KeySet.Key objects. NestedContentField Describes a content field that contains Nested content. PresentationError An error type thrown by Presentation APIs. PresentationRpcInterface Interface used for communication between Presentation backend and frontend. PropertiesField Describes a content field that's based on one or more similar RegisteredRuleset A ruleset that is registered in a ruleset manager. RulesetsFactory A factory class that can be used to create presentation rulesets targeted towards Constants Name Description DEFAULT_KEYS_BATCH_SIZE Default (recommended) keyset batch size for cases when it needs to be sent Enumerations Name Description ChildNodeSpecificationTypes Used for serializing array of ChildNodeSpecification ContentFlags Flags that control content format. ContentSpecificationTypes Used for serializing array of ContentSpecification DefaultContentDisplayTypes Displayed content types. FieldDescriptorType Types of different field descriptors. GroupingSpecificationTypes Available types of GroupingSpecification. InstanceLabelOverrideValueSpecificationType Types of possible InstanceLabelOverrideValueSpecificationType.InstanceLabelOverride label values. PresentationCommonLoggerCategory Logger categories used by this package PresentationStatus Status codes used by Presentation APIs. PropertyEditorParameterTypes Used for serializing array of PropertyEditorParameters to JSON PropertyGroupingValue Used in PropertyGroup to specify the type of value to use Deprecated PropertyValueFormat Format of the property value. QuerySpecificationTypes Used for serializing array of QuerySpecification to JSON. RelatedPropertiesSpecialValues Special values that can be used in RelatedPropertiesSpecification.propertyNames RelationshipDirection Defines direction of a relationship that should be followed RelationshipMeaning Meaning of the relationship. RuleTypes Used for serializing Rule objects to JSON. SameLabelInstanceGroupApplicationStage Specifies hierarchy creation stages used to apply SameLabelInstanceGroup grouping. SortDirection Data sorting direction StandardNodeTypes Standard node types VariableValueType Available value types of user-controllable variables VariableValueTypes Possible variable value types Global Functions Name Description getInstancesCount Get total number of instances included in the supplied key set. isSingleElementPropertiesRequestOptions Checks if supplied request options are for single or multiple element properties. Beta Interfaces Name Description ArrayTypeDescription Type description for array properties. BaseFieldJSON Data structure for a Field serialized to JSON. BaseNodeKey Data structure that describes a basic node key BaseNodeKeyJSON Serialized BaseNodeKey JSON representation. BaseTypeDescription Data structure for base content field type description. BooleanRulesetVariable Data structure for representing boolean ruleset variables. BooleanRulesetVariableJSON JSON representation of BooleanRulesetVariable. CalculatedPropertiesSpecification This content modifier allows including additional calculated properties into the content. CategoryDescription A data structure that describes a Field category. CategoryDescriptionJSON Serialized CategoryDescription JSON representation. CheckBoxRule CheckBox rules provide a way to create a checkbox for specific types of ECInstance's. Deprecated ChildNodeRule Child node rules are used to define child nodes in a hierarchy. ChildNodeSpecificationBase Base interface for all ChildNodeSpecification implementations. ClassGroup Base class grouping allows grouping ECInstance nodes by their base class (as opposed to the hierarchy ClassInfo Information about an ECClass ClassInfoJSON A serialized version of ClassInfo CompressedClassInfoJSON A serialized and compressed version of ClassInfo ConditionContainer Container of a ConditionContainer.condition property. Deprecated ContentDescriptorRequestOptions Request type for content descriptor requests. ContentInstanceKeysRequestOptions Request type for content instance keys' requests. Beta ContentInstancesOfSpecificClassesSpecification This specification creates content for all instances of specific ECClasses. ContentJSON Serialized Content JSON representation. ContentModifier Content modifiers are used to modify how instances of specified ECClasses are displayed in content which is ContentModifiersList Contains various rule attributes that allow modifying returned content. ContentRelatedInstancesSpecification Returns content for instances related to the selected (input) instances. ContentRequestOptions Request type for content requests. ContentRule Content rules are used to define content that is displayed for specific type of input. ContentSourcesRequestOptions Request type for content sources requests. Beta ContentSourcesRpcResult Data structure for content sources RPC response. Beta ContentSpecificationBase Base interface for all ContentSpecification implementations. CustomNodeSpecification Returns a static custom-defined node that's not based on an ECInstance. CustomQueryInstanceNodesSpecification Returns nodes for instances returned by a provided ECSQL query. CustomRendererSpecification This specification allows defining a custom renderer, which can be used to render properties or categories. DefaultGroupingPropertiesContainer A container of default grouping properties. DefaultPropertyCategoryOverride A rule that allows overriding the default property category. DescriptorJSON Serialized Descriptor JSON representation. DescriptorOverrides Descriptor overrides that can be used to customize content DescriptorSource Descriptor properties DisabledSortingRule Rule to disable sorting for certain ECInstances in the hierarchy and/or content. DisplayLabelRequestOptions Request type for label requests DisplayLabelsRequestOptions Request type for labels requests DisplayValueGroup A group of raw values and their common display value. DisplayValueGroupJSON JSON representation of DisplayValueGroup. DisplayValuesArray An array of display values DisplayValuesArrayJSON JSON representation of DisplayValuesArray DisplayValuesMap A map of display values DisplayValuesMapJSON JSON representation of DisplayValuesMap DistinctValuesRequestOptions Request type for distinct values' requests. ECClassGroupingNodeKey Data structure that describes an ECClass grouping node key ECClassGroupingNodeKeyJSON Serialized ECClassGroupingNodeKey JSON representation. ECInstancesNodeKey Data structure that describes a node ECInstance node key ECInstancesNodeKeyJSON Serialized ECInstancesNodeKey JSON representation. ECPropertyGroupingNodeKey Data structure that describes an ECProperty grouping node key ECPropertyGroupingNodeKeyJSON Serialized ECPropertyGroupingNodeKey JSON representation. ECPropertyValueQuerySpecification The specification specifies the name of the parent node instance property whose value is the ECSQL EditorDescription A data structure which describes property editor used ElementProperties Data structure for storing element properties information in a simplified format. Beta ElementPropertiesArrayPropertyItemBase Base type for all ElementPropertiesArrayPropertyItem types. Beta ElementPropertiesCategoryItem Definition for a category. Beta ElementPropertiesItemBase Base type for all ElementPropertiesItem types. Beta ElementPropertiesPrimitiveArrayPropertyItem Definition for a primitives' array property value. Beta ElementPropertiesPrimitivePropertyItem Definition for a primitive property value. Beta ElementPropertiesPropertyItemBase Base type for all ElementPropertiesPropertyItem types. Beta ElementPropertiesStructArrayPropertyItem Definition for a structs' array property value. Beta ElementPropertiesStructPropertyItem Definition for an struct property value. Beta EnumerationChoice A single choice in enumeration EnumerationInfo Enumeration information ExtendedDataRule Extended data rule is used to inject some arbitrary data into presentation data objects (nodes, content records). FieldDescriptorBase Base for a field descriptor FilterByInstancePathsHierarchyRequestOptions Request type of filtering hierarchies by given ECInstance paths. FilterByTextHierarchyRequestOptions Request type of filtering hierarchies by given text. GroupingNodeKey Data structure that describes a grouping node key GroupingNodeKeyJSON Serialized GroupingNodeKey JSON representation. GroupingRule Grouping rules provide advanced ways to group instances when creating hierarchies. GroupingSpecificationBase Base interface for all GroupingSpecification implementations. HierarchyCompareInfo Information about hierarchy modification / differences. HierarchyCompareInfoJSON JSON representation of HierarchyCompareInfo. HierarchyCompareOptions Data structure for comparing a hierarchy after ruleset or ruleset variable changes. HierarchyRequestOptions Request type for hierarchy requests. Id64RulesetVariable Data structure for representing ID ruleset variables. Id64RulesetVariableJSON JSON representation of Id64RulesetVariable. Id64sRulesetVariable Data structure for representing ID array ruleset variables. Id64sRulesetVariableJSON JSON representation of Id64sRulesetVariable. IdCategoryIdentifier Identifier of a category specified through PropertyCategorySpecification in this scope. ImageIdOverride ImageId override rules allow setting an image ID to specific types of ECInstances. Deprecated InstanceKey A key that uniquely identifies an instance in an iModel InstanceKeyJSON A serialized version of InstanceKey InstanceLabelOverride Instance label override rule provides a way to set instance label to one of its property values, InstanceLabelOverrideBriefcaseIdSpecification Specification returns ECInstance's briefcase ID in base36 format. InstanceLabelOverrideClassLabelSpecification Specification uses ECClass display label as the label content. InstanceLabelOverrideClassNameSpecification Specification uses ECClass name as the label content. InstanceLabelOverrideCompositeValueSpecification Specification allows creating a label value composited using multiple other specifications. InstanceLabelOverrideLocalIdSpecification Specification returns ECInstance's local ID in base36 format. InstanceLabelOverridePropertyValueSpecification Specification uses property value as the label content. InstanceLabelOverrideRelatedInstanceLabelSpecification Specification uses label of another related instance as the label content. InstanceLabelOverrideStringValueSpecification Specification uses the specified value as the label content. InstanceLabelOverrideValueSpecificationBase Base interface for all InstanceLabelOverrideValueSpecification implementations. InstanceNodesOfSpecificClassesSpecification Returns nodes for instances of specific ECClasses. IntRulesetVariable Data structure for representing int ruleset variables. IntRulesetVariableJSON JSON representation of IntRulesetVariable. IntsRulesetVariable Data structure for representing int array ruleset variables. IntsRulesetVariableJSON JSON representation of IntsRulesetVariable. ItemJSON Serialized Item JSON representation. KeySetJSON A data structure of serialized KeySet KindOfQuantityInfo Kind of quantity information LabelCompositeValue Data structure that describes raw composite label value. LabelCompositeValueJSON JSON representation of LabelCompositeValue LabelDefinition Data structure that describes label definition. LabelDefinitionJSON JSON representation of LabelDefinition LabelGroupingNodeKey Data structure that describes a display label grouping node key LabelGroupingNodeKeyJSON Serialized LabelGroupingNodeKey JSON representation. LabelOverride Label override rules provide advanced ways to override instance labels and descriptions in Deprecated MultiElementPropertiesRequestOptions Request type for multiple elements properties requests. Beta MultiSchemaClassesSpecification This specification lists ECClasses which should be targeted when creating content or hierarchy nodes. NamedFieldDescriptor Field descriptor that identifies a content field by its unique name. NavigationPropertyInfo Navigation property information Beta NavigationPropertyInfoJSON A serialized version of NavigationPropertyInfo Beta NavigationRuleBase Base class for all NavigationRule implementations. NestedContentFieldJSON Data structure for a NestedContentField serialized to JSON. NestedContentValue Data structure that describes nested content value. NestedContentValueJSON JSON representation of NestedContentValue NoCategoryIdentifier Identifier for no category. Node Data structure that describes a tree node. NodeArtifactsRule Node artifacts rules are used to create and assign artifacts to specific nodes. NodeDeletionInfo Information about node deletion. NodeDeletionInfoJSON JSON representation of NodeDeletionInfo. NodeInsertionInfo Information about node insertion. NodeInsertionInfoJSON JSON representation of NodeInsertionInfo. NodeJSON Serialized Node JSON representation. NodePathElement Describes a single step in the nodes path. NodePathElementJSON Serialized NodePathElement JSON representation. NodePathFilteringData Data related to node hierarchy filtering NodePathFilteringDataJSON Serialized NodePathFilteringData JSON representation. NodeUpdateInfo Information about node update. NodeUpdateInfoJSON JSON representation of NodeUpdateInfo. PagedResponse A structure for paged responses PageOptions Paging options ParentCategoryIdentifier Identifier of the default parent category. PresentationRpcResponseData Data structure for presentation RPC responses PrimitiveTypeDescription Type description for primitive properties. PropertiesFieldDescriptor Field descriptor that identifies a properties field using a list of PropertiesFieldJSON Data structure for a PropertiesField serialized to JSON. Property Data structure that describes a single ECProperty that's PropertyAccessor Data structure that describes one step of property PropertyCategorySpecification Content modifier for defining custom property categories. PropertyEditorJsonParameters Arbitrary JSON parameters for custom property editors PropertyEditorMultilineParameters Multiline parameters for property editors that support multiline display PropertyEditorParametersBase Base interface for PropertyEditorParameters. PropertyEditorRangeParameters Range parameters for property editors that support ranges PropertyEditorSliderParameters Slider parameters for property editors that support slider display PropertyEditorSpecification This specification allows assigning a custom property editor to specific properties. PropertyGroup Property grouping allows grouping by a property of the instance by value or by given ranges of values. PropertyInfo A structure that describes an ECProperty PropertyInfoJSON A serialized version of PropertyInfo PropertyJSON JSON representation of PropertyJSON.Property PropertyOverrides A container structure for possible property overrides PropertyRangeGroupSpecification Describes a grouping range. PropertySortingRule Rule to configure sorting for certain ECInstances in the hierarchy and/or content. PropertySpecification This specification allows overriding some attributes of specific ECProperty or define how it's displayed. QuerySpecificationBase Base interface for all QuerySpecification implementations. RelatedClassInfo A structure that describes a related class and the properties of that relationship. RelatedClassInfoJSON A serialized version of RelatedClassInfo RelatedInstanceNodesSpecification Produces ECInstance nodes that are related to some source ECInstance. RelatedInstanceSpecification Related instance specification is used in content RelatedPropertiesSpecification This specification allows including related instance properties into the content. RelationshipStepSpecification Specification of a single step in RelationshipPathSpecification. RendererDescription Describes property renderer used for a content Field. RepeatableRelationshipStepSpecification Specification of a single step in RepeatableRelationshipPathSpecification. RequestOptions A generic request options type used for both hierarchy and content requests. RequestOptionsWithRuleset Options for requests that require presentation ruleset. RequiredSchemaSpecification This specification is designed for specifying schema requirements for the Ruleset or specific Beta RootCategoryIdentifier Identifier of the root category. RootNodeRule Root node rules are used to define nodes that are displayed at the root hierarchy level. RuleBase Base interface for all Rule implementations. Ruleset Presentation ruleset is a list of rules that define tree hierarchy and content provided by RulesetVariableBase Base data structure for representing ruleset variables. RulesetVariableBaseJSON JSON representation of RulesetVariableBase. SameLabelInstanceGroup Allows grouping multiple instances with the same label into one ECInstances type of node. SchemasSpecification Specification for a list of ECSchemas SelectClassInfo Data structure that describes an ECClass in content Descriptor. SelectClassInfoJSON Serialized SelectClassInfo JSON representation SelectedNodeInstancesSpecification Returns content for selected (input) instances. SelectionInfo Data structure that contains selection information. SelectionScope Data structure that describes a selection scope SelectionScopeRequestOptions Request options used for selection scope related requests SingleElementPropertiesRequestOptions Request type for single element properties requests. Beta SingleSchemaClassSpecification This specification is used to point to specific ECClass. SortingRuleBase Sorting rules provide a way to either disable sorting or sort instances by specific properties. StringQuerySpecification The specification contains an ECSQL query which is used to query for instances. StringRulesetVariable Data structure for representing string ruleset variables. StringRulesetVariableJSON JSON representation of StringRulesetVariable. StrippedRelatedClassInfo Data structure that contains a subset of RelatedClassInfo required to StructFieldMemberDescription A data structure that describes a struct member. StructTypeDescription Type description for struct properties. StyleOverride Style override rules allow customizing display style of specific types of ECInstances. Deprecated SubCondition This is a sub-rule which shares placement attributes and SupplementationInfo Contains supplementation-related information for ValuesArray An array of raw values ValuesArrayJSON JSON representation of ValuesArray ValuesDictionary A dictionary data structure. ValuesMap A map of raw values ValuesMapJSON JSON representation of ValuesMap Variable Definition for single user-controllable variable VariablesGroup Presentation rules support variables that allow having additional customization of the hierarchy Namespaces Name Description CategoryDescription ClassInfo DisplayValue DisplayValueGroup FieldDescriptor HierarchyCompareInfo InstanceKey Key LabelCompositeValue LabelDefinition NavigationPropertyInfo Beta NestedContentValue Node NodeKey NodePathElement NodePathFilteringData PartialHierarchyModification Property PropertyInfo RelatedClassInfo RelatedClassInfoWithOptionalRelationship RelationshipPath RulesetVariable SelectClassInfo Value Type Aliases Name Description CategoryIdentifier Category identifier used to assign properties to a category. ChildNodeSpecification Hierarchy rule specifications that define what nodes are going to be returned by the rule. ClassId Type of an ECClass ID. ComputeDisplayValueCallback ContentDescriptorRpcRequestOptions Data structure for content descriptor RPC request options. ContentInstanceKeysRpcRequestOptions Data structure for content instance keys' request options. Beta ContentRpcRequestOptions Data structure for content RPC request options. ContentSourcesRpcRequestOptions Data structure for content sources RPC request options. Beta ContentSpecification Content rule specifications which define what content is returned CustomizationRule Customization rules allow customizing each node or content item separately. DisplayLabelRpcRequestOptions Data structure for label request options. DisplayLabelsRpcRequestOptions Data structure for labels request options. DisplayValue Display value type. DisplayValueJSON JSON representation of DisplayValueJSON.DisplayValue DistinctValuesRpcRequestOptions Data structure for distinct values' request options. ElementPropertiesArrayPropertyItem Definition for an array property value. Beta ElementPropertiesItem Definition of a property item, including a property category. Beta ElementPropertiesPropertyItem Definition of a property value. Beta ElementPropertiesPropertyValueType Available element property types. Beta ElementPropertiesRequestOptions Request type for element properties requests Beta FieldDescriptor A union of all possible field descriptor types FieldJSON JSON representation of a Field FilterByInstancePathsHierarchyRpcRequestOptions Data structure for filtering hierarchy by ECInstance paths request options. FilterByTextHierarchyRpcRequestOptions Data structure for filtering hierarchy by text request options. GroupingSpecification Grouping rule specifications. HierarchyRpcRequestOptions Data structure for hierarchy request options. InstanceId Type of an ECInstance ID. InstanceLabelOverrideValueSpecification Specification to define how the label for InstanceLabelOverrideValueSpecification.InstanceLabelOverride should be created. Key A single key that identifies something in an iTwin.js application Keys A type for multiple keys that identify something in iModel.js application LabelRawValue Type definition of label raw value. LabelRawValueJSON JSON representation of LabelRawValue NavigationRule Navigation rules are used to define hierarchies displayed in tree components. NodeKey One of the node key types NodeKeyJSON One of the serialized node key types NodeKeyPath Node key path. Omit Create a type with T properties excluding properties listed in K. Paged A wrapper type that injects PageOptions into supplied type PartialBy Create a type from given type T and make specified properties optional. PartialHierarchyModification Information about a hierarchy change: insertion, deletion or node update. PartialHierarchyModificationJSON JSON representation of PartialHierarchyModificationJSON.PartialHierarchyModification. PartialNode Partial node definition. PartialNodeJSON Serialized PartialNode JSON representation. PresentationRpcRequestOptions Base options for all presentation RPC requests. PresentationRpcResponse A promise of PresentationRpcResponseData. PrimitivePropertyValue Value of a primitive property. Prioritized A wrapper type that injects priority into supplied type. PropertyAccessorPath Describes path to a property. PropertyEditorParameters Parameters for PropertyEditorSpecification QuerySpecification Query specifications used in CustomQueryInstanceNodesSpecification. RelatedClassInfoWithOptionalRelationship A structure that describes a relationship between source and target classes where RelatedClassInfoWithOptionalRelationshipJSON RelationshipPath A structure that describes a related class path. RelationshipPathJSON Serialized RelationshipPathJSON.RelationshipPath RelationshipPathSpecification Relationship path specification is used to define a relationship path to an ECClass. RepeatableRelationshipPathSpecification This specification declares a step in a relationship path between a source and target ECInstances. Rule A union of all presentation rule types. RulesetVariable Data structure for representing ruleset variables. RulesetVariableJSON JSON representation of RulesetVariableJSON.RulesetVariable. SelectionScopeRpcRequestOptions Data structure for selection scope request options. SingleElementPropertiesRpcRequestOptions Data structure for single element properties RPC request options. Beta SortingRule Sorting rules provide a way to either disable sorting or sort instances by specific properties. StrippedRelationshipPath Data structure that contains a subset of StrippedRelationshipPath.RelationshipPath required to Subtract Create a type with T properties excluding all properties in type K. TypeDescription One of content field type descriptions. Value Raw value type ValueJSON JSON representation of ValueJSON.Value VariableValue Union of all supported variable value types VariableValueJSON JSON representation of VariableValue Last Updated: 20 May, 2022