C# Class FoundationDB.Layers.Blobs.FdbBlob

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Méthodes publiques

Méthode	Description
AppendAsync ( IFdbTransaction trans, Slice data ) : System.Threading.Tasks.Task	Append the contents of data onto the end of the blob.
Delete ( IFdbTransaction trans ) : void	Delete all key-value pairs associated with the blob.
FdbBlob ( FdbSubspace subspace ) : FoundationDB.Client	Create a new object representing a binary large object (blob). Only keys within the subspace will be used by the object. Other clients of the database should refrain from modifying the subspace.
GetSizeAsync ( IFdbReadOnlyTransaction trans ) : Task	Get the size (in bytes) of the blob.
ReadAsync ( IFdbReadOnlyTransaction trans, long offset, int n ) : Task	Read from the blob, starting at offset, retrieving up to n bytes (fewer then n bytes are returned when the end of the blob is reached).
TruncateAsync ( IFdbTransaction trans, long newLength ) : System.Threading.Tasks.Task	Change the blob length to newLength, erasing any data when shrinking, and filling new bytes with 0 when growing.
WriteAsync ( IFdbTransaction trans, long offset, Slice data ) : System.Threading.Tasks.Task	Write data to the blob, starting at and overwriting any existing data at that location. The length of the blob is increased if necessary.

Méthodes protégées

Méthode	Description
AttributeKey ( string name ) : Slice
DataKey ( long offset ) : Slice	Returns the key for data chunk at the specified offset
DataKeyOffset ( Slice key ) : long
SizeKey ( ) : Slice

Private Methods

Méthode	Description
GetChunkAtAsync ( IFdbTransaction trans, long offset ) : Task
MakeSparseAsync ( IFdbTransaction trans, long start, long end ) : System.Threading.Tasks.Task
MakeSplitPointAsync ( IFdbTransaction trans, long offset ) : System.Threading.Tasks.Task
SetSize ( IFdbTransaction trans, long size ) : void
TryRemoteSplitPointAsync ( IFdbTransaction trans, long offset ) : Task
WriteToSparse ( IFdbTransaction trans, long offset, Slice data ) : void

Method Details

AppendAsync() public méthode

Append the contents of data onto the end of the blob.

public AppendAsync ( IFdbTransaction trans, Slice data ) : System.Threading.Tasks.Task
trans	IFdbTransaction
data	Slice
Résultat	System.Threading.Tasks.Task

AttributeKey() protected méthode

protected AttributeKey ( string name ) : Slice
name	string
Résultat	Slice

DataKey() protected méthode

Returns the key for data chunk at the specified offset

protected DataKey ( long offset ) : Slice
offset	long
Résultat	Slice

DataKeyOffset() protected méthode

protected DataKeyOffset ( Slice key ) : long
key	Slice
Résultat	long

Delete() public méthode

Delete all key-value pairs associated with the blob.

public Delete ( IFdbTransaction trans ) : void
trans	IFdbTransaction
Résultat	void

FdbBlob() public méthode

Create a new object representing a binary large object (blob). Only keys within the subspace will be used by the object. Other clients of the database should refrain from modifying the subspace.

public FdbBlob ( FdbSubspace subspace ) : FoundationDB.Client
subspace	FdbSubspace	Subspace to be used for storing the blob data and metadata
Résultat	FoundationDB.Client

GetSizeAsync() public méthode

Get the size (in bytes) of the blob.

public GetSizeAsync ( IFdbReadOnlyTransaction trans ) : Task
trans	IFdbReadOnlyTransaction
Résultat	Task

ReadAsync() public méthode

Read from the blob, starting at offset, retrieving up to n bytes (fewer then n bytes are returned when the end of the blob is reached).

public ReadAsync ( IFdbReadOnlyTransaction trans, long offset, int n ) : Task
trans	IFdbReadOnlyTransaction
offset	long
n	int
Résultat	Task

SizeKey() protected méthode

protected SizeKey ( ) : Slice
Résultat	Slice

TruncateAsync() public méthode

Change the blob length to newLength, erasing any data when shrinking, and filling new bytes with 0 when growing.

public TruncateAsync ( IFdbTransaction trans, long newLength ) : System.Threading.Tasks.Task
trans	IFdbTransaction
newLength	long
Résultat	System.Threading.Tasks.Task

WriteAsync() public méthode

Write data to the blob, starting at and overwriting any existing data at that location. The length of the blob is increased if necessary.

public WriteAsync ( IFdbTransaction trans, long offset, Slice data ) : System.Threading.Tasks.Task
trans	IFdbTransaction
offset	long
data	Slice
Résultat	System.Threading.Tasks.Task