FValue

A value is a compressed buffer identified by its raw hash and raw size.

Unreal Engine C++ API Reference > Developer > DerivedDataCache

Inheritance Hierarchy

  • FValue

References

   
Module DerivedDataCache
Header /Engine/Source/Developer/DerivedDataCache/Public/DerivedDataValue.h
Include #include "DerivedDataValue.h"

Syntax

class FValue  

Remarks

A value is a compressed buffer identified by its raw hash and raw size.

A value without data may be used as a reference to the value.

Constructors

Type Name Description
  FValue () Construct a null value, which is a hash and size of zero with no data.
  FValue ( const FCompressedBuffer& Data ) Construct a value from a compressed buffer, which is cloned if not owned.
  FValue ( FCompressedBuffer&& Data ) Construct a null value, which is a hash and size of zero with no data.
  FValue ( const FIoHash& RawHash, uint64 RawSize ) Construct a value reference from the hash and size of its data.

Functions

Type Name Description
FValue Compress ( const FCompositeBuffer& RawData, uint64 BlockSize ) Compress the buffer to a value using default derived data compression parameters.
FValue Compress ( const FSharedBuffer& RawData, uint64 BlockSize ) Compress the buffer to a value using default derived data compression parameters.
const FCompr... GetData () Returns the compressed buffer for the value. May be null.
const FIoHas... GetRawHash () Returns the hash of the raw buffer (uncompressed) for the value.
uint64 GetRawSize () Returns the size of the raw buffer (uncompressed) for the value.
bool HasData () Whether the compressed buffer for the value is available.
FValue RemoveData () Create a copy of the value with the data removed.
void Reset () Reset this to null.

Constants

Name Description
Null A null value.

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