org.firebirdsql.gds.impl.wire
Class XdrInputStream

java.lang.Object
  org.firebirdsql.gds.impl.wire.XdrInputStream

Direct Known Subclasses:

WireXdrInputStream

public class XdrInputStream
extends Object

XdrInputStream is an input stream for reading in data that is in the XDR format. An XdrInputStream instance is wrapped around an underlying java.io.InputStream.

Version:

1.0

Author:

Alejandro Alberola, David Jencks

Field Summary

protected byte[]	buf
protected int	count
protected static int	defaultBufferSize
protected InputStream	in
protected static byte[]	pad
protected int	pos

Constructor Summary

protected	XdrInputStream()
	XdrInputStream(InputStream in) Create a new instance of XdrInputStream.

Method Summary

void	close() Close this input stream and the underlying input stream.
int	read() Read in the next byte of data from the underlying input stream.
byte[]	readBuffer() Read in a byte buffer.
void	readFully(byte[] b, int off, int len) Read a given amount of data from the underlying input stream.
int	readInt() Read in an int.
long	readLong() Read in a long.
byte[]	readRawBuffer(int len) Read in a raw array of bytes.
int	readShort() Read in a short.
void	readSQLData(int[] ioLength, isc_stmt_handle_impl stmt) Read a row of SQL data and store it in the results set of a statement.
String	readString() Read in a String.

Methods inherited from class java.lang.Object

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

Field Detail

pad

protected static final byte[] pad

in

protected InputStream in

defaultBufferSize

protected static int defaultBufferSize

buf

protected byte[] buf

count

protected int count

pos

protected int pos

Constructor Detail

XdrInputStream

protected XdrInputStream()

XdrInputStream

public XdrInputStream(InputStream in)

Create a new instance of XdrInputStream.

Parameters:

in - The underlying InputStream to read from

Method Detail

readBuffer

public byte[] readBuffer()
                  throws IOException

Read in a byte buffer.

Returns:

The buffer that was read

Throws:

IOException - if an error occurs while reading from the underlying input stream

readRawBuffer

public byte[] readRawBuffer(int len)
                     throws IOException

Read in a raw array of bytes.

Parameters:

len - The number of bytes to read

Returns:

The byte buffer that was read

Throws:

IOException - if an error occurs while reading from the underlying input stream

readString

public String readString()
                  throws IOException

Read in a String.

Returns:

The String that was read

Throws:

IOException - if an error occurs while reading from the underlying input stream

readSQLData

public void readSQLData(int[] ioLength,
                        isc_stmt_handle_impl stmt)
                 throws IOException

Read a row of SQL data and store it in the results set of a statement.

Parameters:

ioLength - array containing the lengths of each column in the data row that is to be read

stmt - The statement where the row is to be stored

Throws:

IOException - if an error occurs while reading from the underlying input stream

readLong

public long readLong()
              throws IOException

Read in a long.

Returns:

The long that was read

Throws:

IOException - if an error occurs while reading from the underlying input stream

readInt

public int readInt()
            throws IOException

Read in an int.

Returns:

The int that was read

Throws:

IOException - if an error occurs while reading from the underlying input stream

readShort

public int readShort()
              throws IOException

Read in a short.

Returns:

The short that was read

Throws:

IOException - if an error occurs while reading from the underlying input stream

readFully

public void readFully(byte[] b,
                      int off,
                      int len)
               throws IOException

Read a given amount of data from the underlying input stream. The data that is read is stored in b, starting from offset off.

Parameters:

b - The byte buffer to hold the data that is read

off - The offset at which to start storing data in b

len - The number of bytes to be read

Throws:

IOException - if an error occurs while reading from the underlying input stream

read

public int read()
         throws IOException

Read in the next byte of data from the underlying input stream.

Returns:

The value that was read

Throws:

IOException - if an error occurs while reading from the underlying input stream

close

public void close()
           throws IOException

Close this input stream and the underlying input stream.

Throws:

IOException - if an error occurs while closing the underlying input stream