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Private  Storage   


persistent class %iKnow.Objects.MetadataField extends

Note: the use of this class is no longer recommended for accessing elements of a specific domain. For those scenarios, %iKnow.Tables.Utils offers a more flexible and customizable way of projecting iKnow domain data to SQL

This is a read-only object representation wrapping the internal iKnow data structures for Metadata fields.

This class can be used from ObjectScript or SQL to access a single or small number of entries, but the storage mappings are not meant to support elaborate or complex queries targeting this SQL table.

Please use the predefined queries in %iKnow.Queries.MetadataAPI and other query classes to consult metadata as the internal global structures are designed to optimize performance for these queries rather than general-purpose access.


Parameters Properties Methods Queries Indices ForeignKeys Triggers
1 11 2


DataType DomainId FieldId HasBitstringStorage
Hidden IsCaseSensitive ListOfValuesId Name
StorageType SupportedOperators ValidateListOfValues

%AddToSaveSet %AddToSyncSet %BuildIndicesAsync %BuildIndicesAsyncResponse
%CheckConstraints %CheckConstraintsForExtent %ClassIsLatestVersion %ClassName
%ComposeOid %ConstructClone %Delete %DeleteExtent
%DeleteId %DispatchClassMethod %DispatchGetModified %DispatchGetProperty
%DispatchMethod %DispatchSetModified %DispatchSetMultidimProperty %DispatchSetProperty
%Exists %ExistsId %Extends %GUID
%GUIDSet %GetLock %GetParameter %GetSwizzleObject
%Id %IsA %IsModified %IsNull
%KillExtent %LockExtent %LockId %New
%NormalizeObject %ObjectIsNull %ObjectModified %Oid
%OnBeforeAddToSync %OnDetermineClass %Open %OpenId
%OriginalNamespace %PackageName %PurgeIndices %Reload
%RemoveFromSaveSet %ResolveConcurrencyConflict %RollBack %Save
%SaveDirect %SerializeObject %SetModified %SortBegin
%SortEnd %SyncObjectIn %SyncTransport %UnlockExtent
%UnlockId %ValidateIndices %ValidateObject


• parameter READONLY = 1;
READONLY = 1 means that objects can be created, opened but not saved or deleted. Tables are projected to SQL as READONLY.


• property DataType as %String;
• property DomainId as %Integer;
• property FieldId as %Integer;
• property HasBitstringStorage as %Boolean [ Calculated ];
• property Hidden as %Boolean;
• property IsCaseSensitive as %Boolean;
• property ListOfValuesId as %Integer;
• property Name as %String(MAXLEN=1000);
• property StorageType as %Integer;
• property SupportedOperators as %String [ Calculated ];
• property ValidateListOfValues as %Boolean;


•index (NameIndex on DomainId,Name) [Unique];
•index (PKINDEX on DomainId,FieldId) [IdKey,PrimaryKey,Unique];
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