Class %IO.NullStream

class %IO.NullStream extends %IO.I.ByteSeekableStream

Read returns nothing, Write does nothing

Parameters	Properties	Methods	Queries	Indices	ForeignKeys	Triggers
		5

Summary

Properties
AtEnd	CharEncoding	DefaultFlushOnWrite	IsCharacter
IsOpen	Name	Position	Size

Methods
%AddToSaveSet	%ClassIsLatestVersion	%ClassName	%ConstructClone
%DispatchClassMethod	%DispatchGetModified	%DispatchGetProperty	%DispatchMethod
%DispatchSetModified	%DispatchSetMultidimProperty	%DispatchSetProperty	%Extends
%GetParameter	%IsA	%IsModified	%New
%NormalizeObject	%ObjectModified	%OriginalNamespace	%PackageName
%RemoveFromSaveSet	%SerializeObject	%SetModified	%ValidateObject
AtEndGet	CharEncodingSet	Clear	Close
CopyFrom	CopyReplace	CopyReplaceArray	DefaultFlushOnWriteGet
Find	Flush	InputFromDevice	IsOpenGet
OutputToDevice	Read	ReadUntil	ReadUntilArray
Rewind	Seek	SizeGet	TruncateAt
Write

Methods

• method AtEndGet() as %Boolean

This is a Get accessor method for the AtEnd property.

• method IsOpenGet() as %Boolean

This is a Get accessor method for the IsOpen property.

• method Read(pMaxReadLen As %Integer, ByRef pTimeout As %Numeric = -1, Output pSC As %Status) as %String

Read until pMaxReadLen chars are gotten or pTimeout expires On return, if pTimeout is unchanged it means the full timeout period expired. If the timeout period expired and the returned string is shorter than pMaxReadLen, then AtEnd will be 1.

• method Seek(pPosition As %Integer, Output pSC As %Status) as %Boolean

• method Write(pData As %String = "", pFlush As %Boolean, Output pSC As %Status)

Write pData to the stream buffer. If pFlush is True, ensure that the data are actually sent to the stream.


[USER] > [%IO] > [NullStream]		Private Storage