#include <DerivedData.h>

Public Member Functions
void	Reset ()

bool	IsEmpty () const

UE_API FDerivedDataIoRequest	Read (const FDerivedData &Data, const FDerivedDataIoOptions &Options={})

UE_API FDerivedDataIoRequest	Cache (const FDerivedData &Data, const FDerivedDataIoOptions &Options={})

UE_API FDerivedDataIoRequest	Exists (const FDerivedData &Data, const FDerivedDataIoOptions &Options={})

UE_API void	Dispatch (FDerivedDataIoResponse &OutResponse)

UE_API void	Dispatch (FDerivedDataIoResponse &OutResponse, FDerivedDataIoPriority Priority)

UE_API void	Dispatch (FDerivedDataIoResponse &OutResponse, FDerivedDataIoPriority Priority, FDerivedDataIoComplete &&OnComplete)

UE_API void	Dispatch (FDerivedDataIoResponse &OutResponse, FDerivedDataIoComplete &&OnComplete)

Detailed Description

Batch of requests to access Derived Data References.

Gather related requests into a batch before issuing it to reduce the overhead of accessing related data.

Member Function Documentation

◆ Cache()

FDerivedDataIoRequest UE::FDerivedDataIoBatch::Cache	(	const FDerivedData &	Data,
		const FDerivedDataIoOptions &	Options = `{}`
	)

Caches the derived data into local storage without loading it. Not executed until Dispatch() is invoked.

The size and status will be available on the response. Status is Ok if it caches and Error if not.

Returns: A request to query the response with. May be discarded by the caller if not needed.

◆ Dispatch() [1/4]

void UE::FDerivedDataIoBatch::Dispatch ( FDerivedDataIoResponse & OutResponse )

Dispatches the requests that have been queued to this batch and resets this batch to empty.

The response must be kept alive until the batch completes, otherwise it will be automatically canceled.

Parameters

OutResponse	Response that is assigned before any requests begin executing.
Priority	Priority of this batch relative to other batches.
OnComplete	Completion callback invoked when the entire batch is complete or canceled.

◆ Dispatch() [2/4]

void UE::FDerivedDataIoBatch::Dispatch	(	FDerivedDataIoResponse &	OutResponse,
		FDerivedDataIoComplete &&	OnComplete
	)

◆ Dispatch() [3/4]

void UE::FDerivedDataIoBatch::Dispatch	(	FDerivedDataIoResponse &	OutResponse,
		FDerivedDataIoPriority	Priority
	)

◆ Dispatch() [4/4]

void UE::FDerivedDataIoBatch::Dispatch	(	FDerivedDataIoResponse &	OutResponse,
		FDerivedDataIoPriority	Priority,
		FDerivedDataIoComplete &&	OnComplete
	)

◆ Exists()

FDerivedDataIoRequest UE::FDerivedDataIoBatch::Exists	(	const FDerivedData &	Data,
		const FDerivedDataIoOptions &	Options = `{}`
	)

Caches the derived data into local storage without loading it. Not executed until Dispatch() is invoked.

The size and status will be available on the response. Status is Ok if it exists and Error if not.

Returns: A request to query the response with. May be discarded by the caller if not needed.

◆ IsEmpty()

bool UE::FDerivedDataIoBatch::IsEmpty ( ) const

inline

Returns true if this batch has no queued requests.

◆ Read()

FDerivedDataIoRequest UE::FDerivedDataIoBatch::Read	(	const FDerivedData &	Data,
		const FDerivedDataIoOptions &	Options = `{}`
	)

Reads the derived data into memory. Not executed until Dispatch() is invoked.

The data, size, and status will be available on the response.

Returns: A request to query the response with. May be discarded by the caller if not needed.

◆ Reset()

void UE::FDerivedDataIoBatch::Reset ( )