Package org.aksw.commons.io.input

Class ReadableChannels

java.lang.Object

org.aksw.commons.io.input.ReadableChannels

public class ReadableChannels
extends Object

Also see SeekableReadableChannels.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_BUFFER_SIZE

Constructor Summary

Constructors

Constructor	Description
ReadableChannels()

Method Summary

Modifier and Type	Method	Description
static <T> ReadableChannel<T>	closeShield(ReadableChannel<T> in)
static <A> ReadableChannel<A>	concat(List<ReadableChannel<A>> channels)
static <A> ReadableChannel<A>	concat(ArrayOps<A> arrayOps, List<ReadableChannel<A>> channels)
static <A> ReadableChannel<A>	limit(ReadableChannel<A> dataStream, long limit)
static <T> Iterator<T>	newBoxedIterator(ReadableChannel<?> dataStream)
static <T> CloseableIterator<T>	newBoxedIterator(ReadableChannel<?> dataStream, int internalBufferSize)
static <T> Stream<T>	newBoxedStream(ReadableChannel<?> dataStream)
static <T> Stream<T>	newBoxedStream(ReadableChannel<?> dataStream, int internalBufferSize)
static <A> ReadableChannel<A>	newChannel(ReadableSource<A> source)
static <T extends ReadableChannel<byte[]>> ReadableByteChannelAdapter<T>	newChannel(T dataStream)
static InputStream	newInputStream(ReadableChannel<byte[]> dataStream)
static InputStream	newInputStream(ReadableSource<byte[]> source)
static <T> CloseableIterator<T>	newIterator(ReadableChannel<T[]> dataStream)
static <T> CloseableIterator<T>	newIterator(ReadableChannel<T[]> dataStream, int internalBufferSize)
static <T> Stream<T>	newStream(ReadableChannel<T[]> dataStream)	Wrap as a java8 stream.
static <A> int	readFully(ReadableSource<A> channel, A array, int position, int length)
static <A> long	skip(ReadableChannel<A> channel, long req, A array, int position, int length)
static <A, X extends ReadableChannel<A>> ReadableChannelWithCounter<A,X>	withCounter(X decoratee)
static <A, T, X extends ReadableChannel<A>> ReadableChannelWithValue<A,T,X>	withValue(X decoratee, T value)
static ReadableChannel<byte[]>	wrap(InputStream inputStream)	Note: The inputStream is internally wrapped with custom readable byte channel that does not close the input stream when a thread gets interrupted.
static ReadableChannel<byte[]>	wrap(ReadableByteChannel channel)	Bridge to java.nio.
static <T> ReadableChannel<T[]>	wrap(Iterator<T> iterator, Runnable closeAction, ArrayOps<T[]> arrayOps)
static <T> ReadableChannel<T[]>	wrap(Stream<T> stream, ArrayOps<T[]> arrayOps)

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_BUFFER_SIZE

public static final int DEFAULT_BUFFER_SIZE

See Also:

• Constant Field Values

Constructor Details

ReadableChannels

public ReadableChannels()

Method Details

limit

public static <A> ReadableChannel<A> limit(ReadableChannel<A> dataStream,
 long limit)

wrap

public static ReadableChannel<byte[]> wrap(ReadableByteChannel channel)

Bridge to java.nio.

wrap

public static ReadableChannel<byte[]> wrap(InputStream inputStream)

Note: The inputStream is internally wrapped with custom readable byte channel that does not close the input stream when a thread gets interrupted. This is essential when probing a seekable input stream for record offsets. Channels.newChannel does close streams on interrupt.

wrap

public static <T> ReadableChannel<T[]> wrap(Stream<T> stream,
 ArrayOps<T[]> arrayOps)

wrap

public static <T> ReadableChannel<T[]> wrap(Iterator<T> iterator,
 Runnable closeAction,
 ArrayOps<T[]> arrayOps)

newChannel

public static <T extends ReadableChannel<byte[]>>
ReadableByteChannelAdapter<T> newChannel(T dataStream)

newInputStream

public static InputStream newInputStream(ReadableChannel<byte[]> dataStream)

newChannel

public static <A> ReadableChannel<A> newChannel(ReadableSource<A> source)

newInputStream

public static InputStream newInputStream(ReadableSource<byte[]> source)

newIterator

public static <T> CloseableIterator<T> newIterator(ReadableChannel<T[]> dataStream)

newIterator

public static <T> CloseableIterator<T> newIterator(ReadableChannel<T[]> dataStream,
 int internalBufferSize)

newStream

public static <T> Stream<T> newStream(ReadableChannel<T[]> dataStream)

Wrap as a java8 stream. Closing the returned stream also closes the dataStream.

newBoxedIterator

public static <T> Iterator<T> newBoxedIterator(ReadableChannel<?> dataStream)

newBoxedIterator

public static <T> CloseableIterator<T> newBoxedIterator(ReadableChannel<?> dataStream,
 int internalBufferSize)

newBoxedStream

public static <T> Stream<T> newBoxedStream(ReadableChannel<?> dataStream)

newBoxedStream

public static <T> Stream<T> newBoxedStream(ReadableChannel<?> dataStream,
 int internalBufferSize)

withCounter

public static <A,
X extends ReadableChannel<A>>
ReadableChannelWithCounter<A,X> withCounter(X decoratee)

withValue

public static <A,
T,
X extends ReadableChannel<A>>
ReadableChannelWithValue<A,T,X> withValue(X decoratee,
 T value)

concat

public static <A> ReadableChannel<A> concat(List<ReadableChannel<A>> channels)

concat

public static <A> ReadableChannel<A> concat(ArrayOps<A> arrayOps,
 List<ReadableChannel<A>> channels)

skip

public static <A> long skip(ReadableChannel<A> channel,
 long req,
 A array,
 int position,
 int length)
                     throws IOException

Throws:

IOException

readFully

public static <A> int readFully(ReadableSource<A> channel,
 A array,
 int position,
 int length)
                         throws IOException

Throws:

IOException

closeShield

public static <T> ReadableChannel<T> closeShield(ReadableChannel<T> in)