Package fr.dyade.aaa.agent

Class ByteArrayMessageInputStream

java.lang.Object

java.io.InputStream

fr.dyade.aaa.agent.MessageInputStream

fr.dyade.aaa.agent.ByteArrayMessageInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public abstract class ByteArrayMessageInputStream
extends MessageInputStream

Class used to recv messages through a stream in a byte array.

Be careful this InputStream is not synchronized.

Field Summary

Fields inherited from class fr.dyade.aaa.agent.MessageInputStream

buf, compressedFlows, count, pos

Constructor Summary

Constructors

Constructor	Description
ByteArrayMessageInputStream(byte[] buf)	Creates a ByteArrayMessageInputStream that uses buf as its buffer array.
ByteArrayMessageInputStream(byte[] buf, int offset, int length)	Creates ByteArrayMessageInputStream that uses buf as its buffer array.

Method Summary

Modifier and Type	Method	Description
int	read()	Reads the next byte of data from the input stream.
int	read(byte[] b, int off, int len)	Reads up to len bytes of data from the input stream into an array of bytes.
protected void	readFully(int length)	Reads length bytes of data from the input stream.

Methods inherited from class fr.dyade.aaa.agent.MessageInputStream

read, readHeader, readInt, readMessage, readMessageHeader, readShort

Methods inherited from class java.io.InputStream

available, close, mark, markSupported, nullInputStream, readAllBytes, readNBytes, readNBytes, reset, skip, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteArrayMessageInputStream

public ByteArrayMessageInputStream(byte[] buf)

Creates a ByteArrayMessageInputStream that uses buf as its buffer array.

Be careful, the buffer array is not copied. The initial value of pos is 0 and the initial value of count is the length of buf.

Parameters:

buf - the input buffer.

ByteArrayMessageInputStream

public ByteArrayMessageInputStream(byte[] buf,
                                   int offset,
                                   int length)

Creates ByteArrayMessageInputStream that uses buf as its buffer array.

Be careful, the buffer array is not copied. The initial value of pos is offset and the initial value of count is the minimum of offset+length and buf.length.

Parameters:

buf - the input buffer.

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

length - the maximum number of bytes to read from the buffer.

Method Detail

read

public final int read()

Reads the next byte of data from the 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 blocks until input data is available, the end of the stream is detected, or an exception is thrown.

Specified by:

read in class MessageInputStream

Returns:

the next byte of data, or -1 if the end of the stream is reached.

read

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

Reads up to len bytes of data from the input stream into an array of bytes. An attempt is made to read as many as len bytes, but a smaller number may be read. The number of bytes actually read is returned as an integer.

This method blocks until input data is available, end of file is detected, or an exception is thrown.

Specified by:

read in class MessageInputStream

Parameters:

b - the buffer into which the data is read.

off - the start offset in array b at which the data is written.

len - the maximum number of bytes to 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

IOException - If the first byte cannot be read for any reason other than end of file, or if the input stream has been closed, or if some other I/O error occurs.

readFully

protected final void readFully(int length)
                        throws IOException

Reads length bytes of data from the input stream.

Specified by:

readFully in class MessageInputStream

Parameters:

length - number of byte to read.

Throws:

IOException - an error occurs.