org.apache.ignite.internal.util.io

Class GridByteArrayInputStream

java.lang.Object

java.io.InputStream

org.apache.ignite.internal.util.io.GridByteArrayInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class GridByteArrayInputStream
extends InputStream

This class defines input stream backed by byte array. It is identical to ByteArrayInputStream with no synchronization.

Constructor Summary

Constructors

Constructor and Description
GridByteArrayInputStream(byte[] buf)
GridByteArrayInputStream(byte[] buf, int off, int len)

Method Summary

Methods

Modifier and Type	Method and Description
int	available() Returns the number of remaining bytes that can be read (or skipped over) from this input stream.
void	close() Closing of this stream has no effect.
void	mark(int readAheadLimit) Set the current marked position in the stream.
boolean	markSupported() Tests if this InputStream supports mark/reset.
int	read() Reads the next byte of data from this input stream.
int	read(byte[] b, int off, int len) Reads up to len bytes of data into an array of bytes from this input stream.
void	reset() Resets the buffer to the marked position.
long	skip(long n) Skips n bytes of input from this input stream.
String	toString()

Methods inherited from class java.io.InputStream

read

Methods inherited from class java.lang.Object

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

Constructor Detail

GridByteArrayInputStream

public GridByteArrayInputStream(byte[] buf)

Parameters:

buf - The input buffer.

GridByteArrayInputStream

public GridByteArrayInputStream(byte[] buf,
                        int off,
                        int len)

Parameters:

buf - The input buffer.

off - The offset in the buffer of the first byte to read.

len - The maximum number of bytes to read from the buffer.

Method Detail

read

public int read()

Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned.

This method cannot block.

Specified by:

read in class InputStream

Returns:

The next byte of data, or -1 if the end of the stream has been reached.

read

public int read(byte[] b,
       int off,
       int len)

Reads up to len bytes of data into an array of bytes from this input stream. If pos equals count, then -1 is returned to indicate end of file. Otherwise, the number k of bytes read is equal to the smaller of len and count-pos. If k is positive, then bytes buf[pos] through buf[pos+k-1] are copied into b[off] through b[off+k-1] in the manner performed by System.arraycopy. The value k is added into pos and k is returned.

This read method cannot block.

Overrides:

read in class InputStream

Parameters:

b - The buffer into which the data is read.

off - The start offset in the destination array b

len - The maximum number of bytes read.

Returns:

The total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

Throws:

NullPointerException - If b is null.

IndexOutOfBoundsException - If off is negative, len is negative, or len is greater than b.length - off

skip

public long skip(long n)

Skips n bytes of input from this input stream. Fewer bytes might be skipped if the end of the input stream is reached. The actual number k of bytes to be skipped is equal to the smaller of n and count-pos. The value k is added into pos and k is returned.

Overrides:

skip in class InputStream

Parameters:

n - The number of bytes to be skipped.

Returns:

The actual number of bytes skipped.

available

public int available()

Returns the number of remaining bytes that can be read (or skipped over) from this input stream.

The value returned is count - pos, which is the number of bytes remaining to be read from the input buffer.

Overrides:

available in class InputStream

Returns:

The number of remaining bytes that can be read (or skipped over) from this input stream without blocking.

markSupported

public boolean markSupported()

Tests if this InputStream supports mark/reset.

This method always returns true.

Overrides:

markSupported in class InputStream

mark

public void mark(int readAheadLimit)

Set the current marked position in the stream. ByteArrayInputStream objects are marked at position zero by default when constructed. They may be marked at another position within the buffer by this method.

If no mark has been set, then the value of the mark is the offset passed to the constructor (or 0 if the offset was not supplied).

Note: The readAheadLimit for this class has no meaning.

Overrides:

mark in class InputStream

reset

public void reset()

Resets the buffer to the marked position. The marked position is 0 unless another position was marked or an offset was specified in the constructor.

Overrides:

reset in class InputStream

close

public void close()

Closing of this stream has no effect.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

toString

public String toString()

Overrides:

toString in class Object