io.servicetalk.concurrent.internal

Class AbstractCloseableIteratorAsInputStream<T>

java.lang.Object

java.io.InputStream

io.servicetalk.concurrent.internal.AbstractCloseableIteratorAsInputStream<T>

Type Parameters:

T - Type of items emitted by the CloseableIterator.

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

CloseableIteratorBufferAsInputStream

public abstract class AbstractCloseableIteratorAsInputStream<T>
extends java.io.InputStream

Conversion from a CloseableIterator to a InputStream given a Function to serialize to bytes.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractCloseableIteratorAsInputStream(CloseableIterator<T> source) Create a new instance.

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
protected abstract boolean	hasLeftOver() Determine if there are left over bytes buffered.
protected abstract boolean	isClosed() Determine if close() has been called.
protected abstract void	leftOverCheckReset() Check if the left over buffer needs to be reset.
protected abstract int	leftOverReadableBytes() Get the number of readable bytes in the left over buffer.
protected abstract void	leftOverReadBytes(byte[] dst, int offset, int length) Read bytes from the left over buffer into b.
protected abstract byte	leftOverReadSingleByte() Read a single byte from the left over buffer.
protected abstract void	leftOverReset() Reset the left over buffer.
boolean	markSupported()
protected abstract void	nextLeftOver(CloseableIterator<T> iterator) Read the next element from the Iterator.
int	read()
int	read(byte[] b, int off, int len)

Methods inherited from class java.io.InputStream

mark, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractCloseableIteratorAsInputStream

protected AbstractCloseableIteratorAsInputStream(CloseableIterator<T> source)

Create a new instance.

Parameters:

source - The CloseableIterator providing data.

Method Detail

leftOverReadableBytes

protected abstract int leftOverReadableBytes()

Get the number of readable bytes in the left over buffer.

Returns:

the number of readable bytes in the left over buffer.

leftOverReadBytes

protected abstract void leftOverReadBytes(byte[] dst,
                                          int offset,
                                          int length)

Read bytes from the left over buffer into b.

Parameters:

dst - The destination to read to.

offset - The offset to read into for dst.

length - The amount of bytes to read from the left over buffer.

hasLeftOver

protected abstract boolean hasLeftOver()

Determine if there are left over bytes buffered.

Returns:

true if there are left over bytes buffered.

leftOverCheckReset

protected abstract void leftOverCheckReset()

Check if the left over buffer needs to be reset.

leftOverReset

protected abstract void leftOverReset()

Reset the left over buffer.

nextLeftOver

protected abstract void nextLeftOver(CloseableIterator<T> iterator)

Read the next element from the Iterator.

Parameters:

iterator - The CloseableIterator to get the next element from.

leftOverReadSingleByte

protected abstract byte leftOverReadSingleByte()

Read a single byte from the left over buffer.

Returns:

a single byte from the left over buffer.

isClosed

protected abstract boolean isClosed()

Determine if close() has been called.

Returns:

true if close() has been called.

read

public final int read(byte[] b,
                      int off,
                      int len)
               throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

available

public final int available()

Overrides:

available in class java.io.InputStream

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException

markSupported

public final boolean markSupported()

Overrides:

markSupported in class java.io.InputStream

read

public final int read()
               throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException