org.eclipse.aether.transfer

## Class TransferEvent.Builder

- java.lang.Object
- - org.eclipse.aether.transfer.TransferEvent.Builder

- Enclosing class:
    TransferEvent

      public static final class TransferEvent.Builder
      extends Object

  A builder to create transfer events.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `TransferEvent.Builder(RepositorySystemSession session, TransferResource resource)` Creates a new transfer event builder for the specified session and the given resource.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `TransferEvent.Builder` | `addTransferredBytes(long transferredBytes)` Increments the total number of bytes that have been transferred so far during the download/upload.
    `TransferEvent` | `build()` Builds a new transfer event from the current values of this builder.
    `TransferEvent.Builder` | `copy()` Creates a new transfer event builder from the current values of this builder.
    `TransferEvent.Builder` | `resetType(TransferEvent.EventType type)` Sets the type of the event and resets event-specific fields.
    `TransferEvent.Builder` | `setDataBuffer(byte[] buffer, int offset, int length)` Sets the byte buffer holding the transferred bytes since the last event.
    `TransferEvent.Builder` | `setDataBuffer(ByteBuffer dataBuffer)` Sets the byte buffer holding the transferred bytes since the last event.
    `TransferEvent.Builder` | `setException(Exception exception)` Sets the error that occurred during the transfer.
    `TransferEvent.Builder` | `setRequestType(TransferEvent.RequestType requestType)` Sets the type of the request/transfer.
    `TransferEvent.Builder` | `setTransferredBytes(long transferredBytes)` Sets the total number of bytes that have been transferred so far during the download/upload of the resource.
    `TransferEvent.Builder` | `setType(TransferEvent.EventType type)` Sets the type of the event.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### TransferEvent.Builder

          public TransferEvent.Builder(RepositorySystemSession session,
                               TransferResource resource)

      Creates a new transfer event builder for the specified session and the given resource.
      Parameters:
        `session` - The repository system session, must not be `null`.
        `resource` - The resource being transferred, must not be `null`.

  - ### Method Detail

    - #### copy

          public TransferEvent.Builder copy()

      Creates a new transfer event builder from the current values of this builder. The state of this builder remains unchanged.
      Returns:
        The new event builder, never `null`.

    - #### resetType

          public TransferEvent.Builder resetType(TransferEvent.EventType type)

      Sets the type of the event and resets event-specific fields. In more detail, the data buffer and the exception fields are set to `null`. Furthermore, the total number of transferred bytes is set to `0` if the event type is `TransferEvent.EventType.STARTED`.
      Parameters:
        `type` - The type of the event, must not be `null`.
      Returns:
        This event builder for chaining, never `null`.

    - #### setType

          public TransferEvent.Builder setType(TransferEvent.EventType type)

      Sets the type of the event. When re-using the same builder to generate a sequence of events for one transfer, `resetType(TransferEvent.EventType)` might be more handy.
      Parameters:
        `type` - The type of the event, must not be `null`.
      Returns:
        This event builder for chaining, never `null`.

    - #### setRequestType

          public TransferEvent.Builder setRequestType(TransferEvent.RequestType requestType)

      Sets the type of the request/transfer.
      Parameters:
        `requestType` - The request/transfer type, must not be `null`.
      Returns:
        This event builder for chaining, never `null`.

    - #### setTransferredBytes

          public TransferEvent.Builder setTransferredBytes(long transferredBytes)

      Sets the total number of bytes that have been transferred so far during the download/upload of the resource. If a download is being resumed, the count must include the bytes that were already downloaded in the previous attempt and from which the current transfer started. In this case, the event type `TransferEvent.EventType.STARTED` should indicate from what byte the download resumes.
      Parameters:
        `transferredBytes` - The total number of bytes that have been transferred so far during the download/upload of the resource, must not be negative.
      Returns:
        This event builder for chaining, never `null`.
      See Also:
        `TransferResource.setResumeOffset(long)`

    - #### addTransferredBytes

          public TransferEvent.Builder addTransferredBytes(long transferredBytes)

      Increments the total number of bytes that have been transferred so far during the download/upload.
      Parameters:
        `transferredBytes` - The number of bytes that have been transferred since the last event, must not be negative.
      Returns:
        This event builder for chaining, never `null`.

    - #### setDataBuffer

          public TransferEvent.Builder setDataBuffer(byte[] buffer,
                                            int offset,
                                            int length)

      Sets the byte buffer holding the transferred bytes since the last event.
      Parameters:
        `buffer` - The byte buffer holding the transferred bytes since the last event, may be `null` if not applicable to the event.
        `offset` - The starting point of valid bytes in the array.
        `length` - The number of valid bytes, must not be negative.
      Returns:
        This event builder for chaining, never `null`.

    - #### setDataBuffer

          public TransferEvent.Builder setDataBuffer(ByteBuffer dataBuffer)

      Sets the byte buffer holding the transferred bytes since the last event.
      Parameters:
        `dataBuffer` - The byte buffer holding the transferred bytes since the last event, may be `null` if not applicable to the event.
      Returns:
        This event builder for chaining, never `null`.

    - #### setException

          public TransferEvent.Builder setException(Exception exception)

      Sets the error that occurred during the transfer.
      Parameters:
        `exception` - The error that occurred during the transfer, may be `null` if none.
      Returns:
        This event builder for chaining, never `null`.

    - #### build

          public TransferEvent build()

      Builds a new transfer event from the current values of this builder. The state of the builder itself remains unchanged.
      Returns:
        The transfer event, never `null`.

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