TransactionContext (Exonum Java Binding: Core 0.4.0 API)

```
public interface TransactionContext
```
Transaction context class. Contains required information for the transaction execution. The context is provided by the framework and users shouldn't create context instances manually except tests.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class TransactionContext.Builder
Transaction context builder.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static TransactionContext.Builder`	`builder()`	Returns the builder of the transaction context.
`com.exonum.binding.common.crypto.PublicKey`	`getAuthorPk()`	Returns public key of the transaction author.
`Fork`	`getFork()`	Returns database view allowing R/W operations.
`com.exonum.binding.common.hash.HashCode`	`getTransactionMessageHash()`	Returns SHA-256 hash of the transaction message that carried the payload from which the transaction was created.

- Method Detail
  - getFork
```
Fork getFork()
```
    Returns database view allowing R/W operations.
  - getTransactionMessageHash
```
com.exonum.binding.common.hash.HashCode getTransactionMessageHash()
```
    Returns SHA-256 hash of the transaction message that carried the payload from which the transaction was created. Each transaction message is uniquely identified by its hash; the messages are persisted in the blockchain and can be fetched by this hash.
  - getAuthorPk
```
com.exonum.binding.common.crypto.PublicKey getAuthorPk()
```
    Returns public key of the transaction author. The corresponding transaction message is guaranteed to have a correct CryptoFunctions.ed25519() signature with this public key.
  - builder
```
static TransactionContext.Builder builder()
```
    Returns the builder of the transaction context.