```
public interface TransactionMessage
```
An Exonum transaction message.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class TransactionMessage.Builder
Builder for the binary transaction message.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`AUTHOR_PUBLIC_KEY_OFFSET`
`static int`	`AUTHOR_PUBLIC_KEY_SIZE`
`static int`	`CLS_OFFSET`
`static int`	`MIN_MESSAGE_SIZE`
`static int`	`PAYLOAD_OFFSET`
`static int`	`SERVICE_ID_OFFSET`
`static int`	`SIGNATURE_SIZE`
`static int`	`TAG_OFFSET`
`static int`	`TRANSACTION_ID_OFFSET`

Method Summary

Modifier and Type	Method	Description
`static TransactionMessage.Builder`	`builder()`	Creates a new builder for the transaction message.
`static TransactionMessage`	`fromBuffer(ByteBuffer buffer)`	Creates the transaction message from the given bytes buffer.
`static TransactionMessage`	`fromBytes(byte[] bytes)`	Creates the transaction message from the given bytes array.
`PublicKey`	`getAuthor()`	Returns a public key of the author of the transaction message.
`byte[]`	`getPayload()`	Returns the payload containing the serialized transaction parameters.
`short`	`getServiceId()`	Returns the identifier of the service this message belongs to.
`byte[]`	`getSignature()`	Returns the Ed25519 signature over this binary message.
`short`	`getTransactionId()`	Returns the transaction type identifier which is unique within the service.
`HashCode`	`hash()`	Returns the SHA-256 hash of the binary message representation.
`int`	`size()`	Returns the transaction message size in bytes.
`byte[]`	`toBytes()`	Returns the transaction message in binary format.

- Field Detail
  - AUTHOR_PUBLIC_KEY_OFFSET
```
static final int AUTHOR_PUBLIC_KEY_OFFSET
```
    See Also:
    
    Constant Field Values
  - CLS_OFFSET
```
static final int CLS_OFFSET
```
    See Also:
    
    Constant Field Values
  - TAG_OFFSET
```
static final int TAG_OFFSET
```
    See Also:
    
    Constant Field Values
  - SERVICE_ID_OFFSET
```
static final int SERVICE_ID_OFFSET
```
    See Also:
    
    Constant Field Values
  - TRANSACTION_ID_OFFSET
```
static final int TRANSACTION_ID_OFFSET
```
    See Also:
    
    Constant Field Values
  - PAYLOAD_OFFSET
```
static final int PAYLOAD_OFFSET
```
    See Also:
    
    Constant Field Values
  - AUTHOR_PUBLIC_KEY_SIZE
```
static final int AUTHOR_PUBLIC_KEY_SIZE
```
    See Also:
    
    Constant Field Values
  - SIGNATURE_SIZE
```
static final int SIGNATURE_SIZE
```
    See Also:
    
    Constant Field Values
  - MIN_MESSAGE_SIZE
```
static final int MIN_MESSAGE_SIZE
```
    See Also:
    
    Constant Field Values
- Method Detail
  - getAuthor
```
PublicKey getAuthor()
```
    Returns a public key of the author of the transaction message.
  - getServiceId
```
short getServiceId()
```
    Returns the identifier of the service this message belongs to.
  - getTransactionId
```
short getTransactionId()
```
    Returns the transaction type identifier which is unique within the service.
  - getPayload
```
byte[] getPayload()
```
    Returns the payload containing the serialized transaction parameters.
  - hash
```
HashCode hash()
```
    Returns the SHA-256 hash of the binary message representation.
  - getSignature
```
byte[] getSignature()
```
    Returns the Ed25519 signature over this binary message.
    The signature is not guaranteed to be valid and must be verified against the signer’s public key.
    
    See Also:
    
    CryptoFunctions.ed25519()
  - toBytes
```
byte[] toBytes()
```
    Returns the transaction message in binary format.
  - size
```
int size()
```
    Returns the transaction message size in bytes.
  - builder
```
static TransactionMessage.Builder builder()
```
    Creates a new builder for the transaction message.
  - fromBytes
```
static TransactionMessage fromBytes(byte[] bytes)
```
    Creates the transaction message from the given bytes array.
  - fromBuffer
```
static TransactionMessage fromBuffer(ByteBuffer buffer)
```
    Creates the transaction message from the given bytes buffer.

Interface TransactionMessage

Nested Class Summary

Field Summary

Method Summary

Field Detail

AUTHOR_PUBLIC_KEY_OFFSET

CLS_OFFSET

TAG_OFFSET

SERVICE_ID_OFFSET

TRANSACTION_ID_OFFSET

PAYLOAD_OFFSET

AUTHOR_PUBLIC_KEY_SIZE

SIGNATURE_SIZE

MIN_MESSAGE_SIZE

Method Detail

getAuthor

getServiceId

getTransactionId

getPayload

hash

getSignature

toBytes

size

builder

fromBytes

fromBuffer