## 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

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