Blob Class Reference

Inheritance diagram for Blob:

Collaboration diagram for Blob:

Public Member Functions
	Blob (const std::vector< uint8_t > &buffer)
std::vector< uint8_t >	read (int64_t offset, int64_t length) override
int64_t	write (int64_t offset, const std::vector< uint8_t > &data) override
int64_t	append (const std::vector< uint8_t > &data) override
int64_t	trim (int64_t newLen) override
int64_t	size () override
const std::vector< uint8_t > &	getBuffer () const

Member Function Documentation

append()

int64_t Blob::append ( const std::vector< uint8_t > &  data )

inlineoverridevirtual

Append the given bytes to the BLOB.

Parameters

The	data to append to the BLOB

Returns

the number of bytes written

Implements ledger::core::api::DatabaseBlob.

read()

std::vector<uint8_t> Blob::read ( int64_t  offset, int64_t  length  )

inlineoverridevirtual

Reads bytes from the blob at the given offset and of the a given length and return them in a byte array.

Parameters

offset	Start to read bytes from the blob at offset value.
length	Maximum number of byte read from the blob

Implements ledger::core::api::DatabaseBlob.

size()

int64_t Blob::size ( )

inlineoverridevirtual

Get the size of the BLOB.

Returns

the size of the BLOB in bytes.

Implements ledger::core::api::DatabaseBlob.

trim()

int64_t Blob::trim ( int64_t  newLen )

inlineoverridevirtual

Truncate the BLOB to the length given by the newLen parameter (in bytes).

Parameters

newLen

The final size of the BLOB

Returns

The number of byte truncated

Implements ledger::core::api::DatabaseBlob.

write()

int64_t Blob::write ( int64_t  offset, const std::vector< uint8_t > &  data  )

inlineoverridevirtual

Write the given bytes at the given offset in the BLOB.

Returns

The number of written bytes

Implements ledger::core::api::DatabaseBlob.

---

The documentation for this class was generated from the following file:

• test/database/MemoryDatabaseProxy.cpp