类 DataBufferUtils

构造器详细资料

• DataBufferUtils

  public DataBufferUtils()

方法详细资料

• readInputStream

  public static reactor.core.publisher.Flux<DataBuffer> readInputStream​(Callable<InputStream> inputStreamSupplier,
                                                                        DataBufferFactory bufferFactory,
                                                                        int bufferSize)

  Obtain a InputStream from the given supplier, and read it into a Flux of DataBuffers. Closes the input stream when the Flux is terminated.

  参数:

  inputStreamSupplier - the supplier for the input stream to read from

  bufferFactory - the factory to create data buffers with

  bufferSize - the maximum size of the data buffers

  返回:

  a Flux of data buffers read from the given channel

• readByteChannel

  public static reactor.core.publisher.Flux<DataBuffer> readByteChannel​(Callable<ReadableByteChannel> channelSupplier,
                                                                        DataBufferFactory bufferFactory,
                                                                        int bufferSize)

  Obtain a ReadableByteChannel from the given supplier, and read it into a Flux of DataBuffers. Closes the channel when the Flux is terminated.

  参数:

  channelSupplier - the supplier for the channel to read from

  bufferFactory - the factory to create data buffers with

  bufferSize - the maximum size of the data buffers

  返回:

  a Flux of data buffers read from the given channel

• readAsynchronousFileChannel

  public static reactor.core.publisher.Flux<DataBuffer> readAsynchronousFileChannel​(Callable<AsynchronousFileChannel> channelSupplier,
                                                                                    DataBufferFactory bufferFactory,
                                                                                    int bufferSize)

  Obtain a AsynchronousFileChannel from the given supplier, and read it into a Flux of DataBuffers. Closes the channel when the Flux is terminated.

  参数:

  channelSupplier - the supplier for the channel to read from

  bufferFactory - the factory to create data buffers with

  bufferSize - the maximum size of the data buffers

  返回:

  a Flux of data buffers read from the given channel

• readAsynchronousFileChannel

  public static reactor.core.publisher.Flux<DataBuffer> readAsynchronousFileChannel​(Callable<AsynchronousFileChannel> channelSupplier,
                                                                                    long position,
                                                                                    DataBufferFactory bufferFactory,
                                                                                    int bufferSize)

  Obtain a AsynchronousFileChannel from the given supplier, and read it into a Flux of DataBuffers, starting at the given position. Closes the channel when the Flux is terminated.

  参数:

  channelSupplier - the supplier for the channel to read from

  position - the position to start reading from

  bufferFactory - the factory to create data buffers with

  bufferSize - the maximum size of the data buffers

  返回:

  a Flux of data buffers read from the given channel

• read

  public static reactor.core.publisher.Flux<DataBuffer> read​(Path path,
                                                             DataBufferFactory bufferFactory,
                                                             int bufferSize,
                                                             OpenOption... options)

  Read bytes from the given file Path into a Flux of DataBuffers. The method ensures that the file is closed when the flux is terminated.

  参数:

  path - the path to read bytes from

  bufferFactory - the factory to create data buffers with

  bufferSize - the maximum size of the data buffers

  返回:

  a Flux of data buffers read from the given channel

  从以下版本开始:

  5.2

• read

  public static reactor.core.publisher.Flux<DataBuffer> read​(Resource resource,
                                                             DataBufferFactory bufferFactory,
                                                             int bufferSize)

  Read the given Resource into a Flux of DataBuffers.

  If the resource is a file, it is read into an AsynchronousFileChannel and turned to Flux via readAsynchronousFileChannel(Callable, DataBufferFactory, int) or else fall back to readByteChannel(Callable, DataBufferFactory, int). Closes the channel when the flux is terminated.

  参数:

  resource - the resource to read from

  bufferFactory - the factory to create data buffers with

  bufferSize - the maximum size of the data buffers

  返回:

  a Flux of data buffers read from the given channel

• read

  public static reactor.core.publisher.Flux<DataBuffer> read​(Resource resource,
                                                             long position,
                                                             DataBufferFactory bufferFactory,
                                                             int bufferSize)

  Read the given Resource into a Flux of DataBuffers starting at the given position.

  If the resource is a file, it is read into an AsynchronousFileChannel and turned to Flux via readAsynchronousFileChannel(Callable, DataBufferFactory, int) or else fall back on readByteChannel(Callable, DataBufferFactory, int). Closes the channel when the flux is terminated.

  参数:

  resource - the resource to read from

  position - the position to start reading from

  bufferFactory - the factory to create data buffers with

  bufferSize - the maximum size of the data buffers

  返回:

  a Flux of data buffers read from the given channel

• write

  public static reactor.core.publisher.Flux<DataBuffer> write​(org.reactivestreams.Publisher<DataBuffer> source,
                                                              OutputStream outputStream)

  Write the given stream of DataBuffers to the given OutputStream. Does not close the output stream when the flux is terminated, and does notrelease the data buffers in the source. If releasing is required, then subscribe to the returned Flux with a releaseConsumer().

  Note that the writing process does not start until the returned Flux is subscribed to.

  参数:

  source - the stream of data buffers to be written

  outputStream - the output stream to write to

  返回:

  a Flux containing the same buffers as in source, that starts the writing process when subscribed to, and that publishes any writing errors and the completion signal

• write

  public static reactor.core.publisher.Flux<DataBuffer> write​(org.reactivestreams.Publisher<DataBuffer> source,
                                                              WritableByteChannel channel)

  Write the given stream of DataBuffers to the given WritableByteChannel. Does not close the channel when the flux is terminated, and does notrelease the data buffers in the source. If releasing is required, then subscribe to the returned Flux with a releaseConsumer().

  Note that the writing process does not start until the returned Flux is subscribed to.

  参数:

  source - the stream of data buffers to be written

  channel - the channel to write to

  返回:

  a Flux containing the same buffers as in source, that starts the writing process when subscribed to, and that publishes any writing errors and the completion signal

• write

  public static reactor.core.publisher.Flux<DataBuffer> write​(org.reactivestreams.Publisher<DataBuffer> source,
                                                              AsynchronousFileChannel channel)

  Write the given stream of DataBuffers to the given AsynchronousFileChannel. Does not close the channel when the flux is terminated, and does notrelease the data buffers in the source. If releasing is required, then subscribe to the returned Flux with a releaseConsumer().

  Note that the writing process does not start until the returned Flux is subscribed to.

  参数:

  source - the stream of data buffers to be written

  channel - the channel to write to

  返回:

  a Flux containing the same buffers as in source, that starts the writing process when subscribed to, and that publishes any writing errors and the completion signal

  从以下版本开始:

  5.0.10

• write

  public static reactor.core.publisher.Flux<DataBuffer> write​(org.reactivestreams.Publisher<? extends DataBuffer> source,
                                                              AsynchronousFileChannel channel,
                                                              long position)

  Write the given stream of DataBuffers to the given AsynchronousFileChannel. Does not close the channel when the flux is terminated, and does notrelease the data buffers in the source. If releasing is required, then subscribe to the returned Flux with a releaseConsumer().

  Note that the writing process does not start until the returned Flux is subscribed to.

  参数:

  source - the stream of data buffers to be written

  channel - the channel to write to

  position - the file position where writing is to begin; must be non-negative

  返回:

  a flux containing the same buffers as in source, that starts the writing process when subscribed to, and that publishes any writing errors and the completion signal

• write

  public static reactor.core.publisher.Mono<Void> write​(org.reactivestreams.Publisher<DataBuffer> source,
                                                        Path destination,
                                                        OpenOption... options)

  Write the given stream of DataBuffers to the given file Path. The optional options parameter specifies how the file is created or opened (defaults to CREATE, TRUNCATE_EXISTING, and WRITE).

  参数:

  source - the stream of data buffers to be written

  destination - the path to the file

  options - the options specifying how the file is opened

  返回:

  a Mono that indicates completion or error

  从以下版本开始:

  5.2

• takeUntilByteCount

  public static reactor.core.publisher.Flux<DataBuffer> takeUntilByteCount​(org.reactivestreams.Publisher<? extends DataBuffer> publisher,
                                                                           long maxByteCount)

  Relay buffers from the given Publisher until the total byte count reaches the given maximum byte count, or until the publisher is complete.

  参数:

  publisher - the publisher to filter

  maxByteCount - the maximum byte count

  返回:

  a flux whose maximum byte count is maxByteCount

• skipUntilByteCount

  public static reactor.core.publisher.Flux<DataBuffer> skipUntilByteCount​(org.reactivestreams.Publisher<? extends DataBuffer> publisher,
                                                                           long maxByteCount)

  Skip buffers from the given Publisher until the total byte count reaches the given maximum byte count, or until the publisher is complete.

  参数:

  publisher - the publisher to filter

  maxByteCount - the maximum byte count

  返回:

  a flux with the remaining part of the given publisher

• retain

  public static <T extends DataBuffer> T retain​(T dataBuffer)

  Retain the given data buffer, if it is a PooledDataBuffer.

  参数:

  dataBuffer - the data buffer to retain

  返回:

  the retained buffer

• release

  public static boolean release​(@Nullable
                                DataBuffer dataBuffer)

  Release the given data buffer, if it is a PooledDataBuffer and has been allocated.

  参数:

  dataBuffer - the data buffer to release

  返回:

  true if the buffer was released; false otherwise.

• releaseConsumer

  public static Consumer<DataBuffer> releaseConsumer()

  Return a consumer that calls release(DataBuffer) on all passed data buffers.

• join

  public static reactor.core.publisher.Mono<DataBuffer> join​(org.reactivestreams.Publisher<? extends DataBuffer> dataBuffers)

  Return a new DataBuffer composed from joining together the given dataBuffers elements. Depending on the DataBuffer type, the returned buffer may be a single buffer containing all data of the provided buffers, or it may be a zero-copy, composite with references to the given buffers.

  If dataBuffers produces an error or if there is a cancel signal, then all accumulated buffers will be released.

  Note that the given data buffers do not have to be released. They will be released as part of the returned composite.

  参数:

  dataBuffers - the data buffers that are to be composed

  返回:

  a buffer that is composed from the dataBuffers argument

  从以下版本开始:

  5.0.3

• join

  public static reactor.core.publisher.Mono<DataBuffer> join​(org.reactivestreams.Publisher<? extends DataBuffer> buffers,
                                                             int maxByteCount)

  Variant of join(Publisher) that behaves the same way up until the specified max number of bytes to buffer. Once the limit is exceeded, DataBufferLimitException is raised.

  参数:

  buffers - the data buffers that are to be composed

  maxByteCount - the max number of bytes to buffer, or -1 for unlimited

  返回:

  a buffer with the aggregated content, possibly an empty Mono if the max number of bytes to buffer is exceeded.

  抛出:

  DataBufferLimitException - if maxByteCount is exceeded

  从以下版本开始:

  5.1.11

• matcher

  public static DataBufferUtils.Matcher matcher​(byte[] delimiter)

  Return a DataBufferUtils.Matcher for the given delimiter. The matcher can be used to find the delimiters in a stream of data buffers.

  参数:

  delimiter - the delimiter bytes to find

  返回:

  the matcher

  从以下版本开始:

  5.2

• matcher

  public static DataBufferUtils.Matcher matcher​(byte[]... delimiters)

  Return a DataBufferUtils.Matcher for the given delimiters. The matcher can be used to find the delimiters in a stream of data buffers.

  参数:

  delimiters - the delimiters bytes to find

  返回:

  the matcher

  从以下版本开始:

  5.2