2.2.0 (latest) 2.0.6 1.34.2 1.33.1 1.32.3 1.31.0 1.30.0 1.29.2 1.28.2 1.26.0 1.25.0 1.24.4 1.23.0 1.22.1 1.21.2 1.19.0 1.18.1 1.17.1 Reference documentation and code samples for the Cloud Datastore V1 Client class ReadWrite.

Options specific to read / write transactions.

Generated from protobuf message `google.datastore.v1.TransactionOptions.ReadWrite`

## Namespace

Google \\ Cloud \\ Datastore \\ V1 \\ TransactionOptions

## Methods

### __construct

Constructor.

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `data` | `array` Optional. Data for populating the Message object. |
| `↳ previous_transaction` | `string` The transaction identifier of the transaction being retried. |

### getPreviousTransaction

The transaction identifier of the transaction being retried.

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `string` |   |

### setPreviousTransaction

The transaction identifier of the transaction being retried.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `var` | `string` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `$this` |   |