Package com.github.shyiko.mysql.binlog.io

Class ByteArrayInputStream

java.lang.Object

java.io.InputStream

com.github.shyiko.mysql.binlog.io.ByteArrayInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class ByteArrayInputStream
extends InputStream

Author:

Stanley Shyiko

Constructor Summary

Constructors

Constructor	Description
ByteArrayInputStream(byte[] bytes)
ByteArrayInputStream(InputStream inputStream)

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
void	enterBlock(int length)
long	fastSkip(long n)	This method implements fast-forward skipping in the stream.
void	fill(byte[] bytes, int offset, int length)
int	getPosition()
void	mark(int readlimit)
boolean	markSupported()
int	peek()
int	read()
byte[]	read(int length)
BitSet	readBitSet(int length, boolean bigEndian)
int	readInteger(int length)	Read int written in little-endian format.
String	readLengthEncodedString()	Read variable-length string.
long	readLong(int length)	Read long written in little-endian format.
int	readPackedInteger()
Number	readPackedNumber()	Format (first-byte-based): 0-250 - The first byte is the number (in the range 0-250).
String	readString(int length)	Read fixed length string.
String	readZeroTerminatedString()	Read variable-length string.
void	reset()
void	skipToTheEndOfTheBlock()

Methods inherited from class java.io.InputStream

nullInputStream, read, read, readAllBytes, readNBytes, readNBytes, skip, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteArrayInputStream

public ByteArrayInputStream(InputStream inputStream)

ByteArrayInputStream

public ByteArrayInputStream(byte[] bytes)

Method Detail

readInteger

public int readInteger(int length)
                throws IOException

Read int written in little-endian format.

Parameters:

length - length of the integer to read

Returns:

the integer from the binlog

Throws:

IOException - in case of EOF

readLong

public long readLong(int length)
              throws IOException

Read long written in little-endian format.

Parameters:

length - length of the long to read

Returns:

the long from the binlog

Throws:

IOException - in case of EOF

readString

public String readString(int length)
                  throws IOException

Read fixed length string.

Parameters:

length - length of string to read

Returns:

string

Throws:

IOException - in case of EOF

readLengthEncodedString

public String readLengthEncodedString()
                               throws IOException

Read variable-length string. Preceding packed integer indicates the length of the string.

Returns:

string

Throws:

IOException - in case of EOF

readZeroTerminatedString

public String readZeroTerminatedString()
                                throws IOException

Read variable-length string. End is indicated by 0x00 byte.

Returns:

string

Throws:

IOException - in case of EOF

read

public byte[] read(int length)
            throws IOException

Throws:

IOException

fill

public void fill(byte[] bytes,
                 int offset,
                 int length)
          throws IOException

Throws:

IOException

readBitSet

public BitSet readBitSet(int length,
                         boolean bigEndian)
                  throws IOException

Throws:

IOException

readPackedInteger

public int readPackedInteger()
                      throws IOException

Returns:

integer

Throws:

IOException - in case of malformed number, eof, null, or long

See Also:

readPackedNumber()

readPackedNumber

public Number readPackedNumber()
                        throws IOException

Format (first-byte-based):
0-250 - The first byte is the number (in the range 0-250). No additional bytes are used.
251 - SQL NULL value
252 - Two more bytes are used. The number is in the range 251-0xffff.
253 - Three more bytes are used. The number is in the range 0xffff-0xffffff.
254 - Eight more bytes are used. The number is in the range 0xffffff-0xffffffffffffffff.

Returns:

long or null

Throws:

IOException - in case of malformed number or EOF

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

peek

public int peek()
         throws IOException

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

enterBlock

public void enterBlock(int length)

skipToTheEndOfTheBlock

public void skipToTheEndOfTheBlock()
                            throws IOException

Throws:

IOException

getPosition

public int getPosition()

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

fastSkip

public long fastSkip(long n)
              throws IOException

This method implements fast-forward skipping in the stream. It can be used if and only if the underlying stream is fully available till its end. In other cases the regular InputStream.skip(long) method must be used.

Parameters:

n - - number of bytes to skip

Returns:

number of bytes skipped

Throws:

IOException