Class %XML.SAX.Utils.NullStream

stream class %XML.SAX.Utils.NullStream extends %Library.AbstractStream

This class is represents a null stream, i.e. reading from it always returns nothing, and writing to it always discards the data. Used by the default implementation of Entity resolver when uri scheme is unrecognized.

Inventory

Parameters	Properties	Methods	Queries	Indices	ForeignKeys	Triggers
		4

Summary

Properties
%Location	AtEnd	Attributes	Id	LastModified
LineTerminator	Size

Methods
%AddToSaveSet	%CheckUnique	%ClassIsLatestVersion	%ClassName
%ConstructClone	%Delete	%DeleteExtent	%DeleteId
%DispatchClassMethod	%DispatchGetModified	%DispatchGetProperty	%DispatchMethod
%DispatchSetModified	%DispatchSetMultidimProperty	%DispatchSetProperty	%Exists
%ExistsId	%Extends	%GetParameter	%GetSwizzleObject
%Id	%IsA	%IsModified	%IsNull
%KillExtent	%LOBPrefetch	%LocationSet	%LockStream
%New	%NormalizeObject	%ObjectIsNull	%ObjectModified
%ObjectSize	%Oid	%Open	%OpenId
%OriginalNamespace	%PackageName	%ReleaseLock	%Reload
%RemoveFromSaveSet	%RollBack	%Save	%SerializeObject
%SetModified	%UnlockStream	%ValidateObject	Clear
CopyFrom	CopyFromAndSave	DeleteAttribute	DeleteStream
FindAt	Flush	GetAttribute	GetAttributeList
GetStreamId	InputFromDevice	IsCharacter	IsDefinedAttribute
IsNull	LastModifiedGet	LineTerminatorSet	MoveTo
MoveToEnd	NextAttribute	OpenStream	OutputToDevice
OutputToDeviceAt	Read	ReadLine	ReadLineIntoStream
ReadSQL	Rewind	SaveStream	SerializeToSyncSet
SetAttribute	SetAttributeList	SizeGet	StreamOIDIsNull
SyncStreamIn	Write	WriteLine

Methods

• method CopyFromAndSave(source As %AbstractStream) as %Status

Copy the stream from source into the current stream ignoring anything already in the current stream and save the result to the permanent location. This is used to optimise the copying of say a %GlobalCharacterStream to another %GlobalCharacterStream to avoid copying into temporary storage first and then moving this to the permanent storage when SaveStream is called.
Note that any locking or transaction handling must be done by the caller.

Class Reference IRIS for UNIX 2024.1.2
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