Package fr.dyade.aaa.common.encoding

Class ByteBufferDecoder

java.lang.Object

fr.dyade.aaa.common.encoding.ByteBufferDecoder

All Implemented Interfaces:

Decoder

public final class ByteBufferDecoder
extends Object
implements Decoder

Decoder using a byte buffer.

Field Summary

Fields

Modifier and Type	Field	Description
private ByteBuffer	buf

Constructor Summary

Constructors

Constructor	Description
ByteBufferDecoder(ByteBuffer buf)

Method Summary

Modifier and Type	Method	Description
short	decode16()	Decodes a signed short integer.
int	decode32()	Decodes a signed integer.
long	decode64()	Decodes a signed long integer.
boolean	decodeBoolean()	Decodes a boolean.
byte	decodeByte()	Decodes a byte.
byte[]	decodeByteArray()	Decodes a byte array that cannot be null.
byte[]	decodeByteArray(int length)	Decodes a byte array that cannot be null.
double	decodeDouble()	Decodes a double.
float	decodeFloat()	Decodes a float.
byte[]	decodeNullableByteArray()	Decodes a byte array that can be null.
String	decodeNullableString()	Decodes a string that can be null.
int	decodeSignedInt()	Decodes a signed integer.
long	decodeSignedLong()	Decodes a signed long integer.
short	decodeSignedShort()	Decodes a signed short integer.
String	decodeString()	Decodes a string that cannot be null.
String	decodeString(int length)	Decodes a string that cannot be null.
int	decodeUnsignedInt()	Decodes an unsigned integer.
long	decodeUnsignedLong()	Decodes an unsigned long integer.
short	decodeUnsignedShort()	Decodes an unsigned short integer.
private boolean	isNull()

Methods inherited from class java.lang.Object

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

Field Detail

buf

private ByteBuffer buf

Constructor Detail

ByteBufferDecoder

public ByteBufferDecoder(ByteBuffer buf)

Method Detail

decodeSignedShort

public short decodeSignedShort()
                        throws Exception

Description copied from interface: Decoder

Decodes a signed short integer. The encoding format depends on the implementation.

Specified by:

decodeSignedShort in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeUnsignedShort

public short decodeUnsignedShort()
                          throws Exception

Description copied from interface: Decoder

Decodes an unsigned short integer. The encoding format depends on the implementation.

Specified by:

decodeUnsignedShort in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decode16

public short decode16()
               throws Exception

Description copied from interface: Decoder

Decodes a signed short integer. The encoding format is the 2's complement representation encoded in 2 bytes.

Specified by:

decode16 in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeSignedInt

public int decodeSignedInt()
                    throws Exception

Description copied from interface: Decoder

Decodes a signed integer. The encoding format depends on the implementation.

Specified by:

decodeSignedInt in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeUnsignedInt

public int decodeUnsignedInt()
                      throws Exception

Description copied from interface: Decoder

Decodes an unsigned integer. The encoding format depends on the implementation.

Specified by:

decodeUnsignedInt in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decode32

public int decode32()
             throws Exception

Description copied from interface: Decoder

Decodes a signed integer. The encoding format is the 2's complement representation encoded in 4 bytes.

Specified by:

decode32 in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeUnsignedLong

public long decodeUnsignedLong()
                        throws Exception

Description copied from interface: Decoder

Decodes an unsigned long integer. The encoding format depends on the implementation.

Specified by:

decodeUnsignedLong in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeSignedLong

public long decodeSignedLong()
                      throws Exception

Description copied from interface: Decoder

Decodes a signed long integer. The encoding format depends on the implementation.

Specified by:

decodeSignedLong in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decode64

public long decode64()
              throws Exception

Description copied from interface: Decoder

Decodes a signed long integer. The encoding format is the 2's complement representation encoded in 8 bytes.

Specified by:

decode64 in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

isNull

private boolean isNull()
                throws Exception

Throws:

Exception

decodeNullableString

public String decodeNullableString()
                            throws Exception

Description copied from interface: Decoder

Decodes a string that can be null. Be careful, since Joram 5.19, by default String are encoded using UTF-8.

Specified by:

decodeNullableString in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeString

public String decodeString()
                    throws Exception

Description copied from interface: Decoder

Decodes a string that cannot be null. Be careful, since Joram 5.19, by default String are encoded using UTF-8.

Specified by:

decodeString in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeString

public String decodeString(int length)
                    throws Exception

Description copied from interface: Decoder

Decodes a string that cannot be null. Be careful, since Joram 5.19, by default String are encoded using UTF-8.

Specified by:

decodeString in interface Decoder

Parameters:

length - the length of the string

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeByte

public byte decodeByte()
                throws Exception

Description copied from interface: Decoder

Decodes a byte.

Specified by:

decodeByte in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeNullableByteArray

public byte[] decodeNullableByteArray()
                               throws Exception

Description copied from interface: Decoder

Decodes a byte array that can be null.

Specified by:

decodeNullableByteArray in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeByteArray

public byte[] decodeByteArray()
                       throws Exception

Description copied from interface: Decoder

Decodes a byte array that cannot be null.

Specified by:

decodeByteArray in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeByteArray

public byte[] decodeByteArray(int length)
                       throws Exception

Description copied from interface: Decoder

Decodes a byte array that cannot be null.

Specified by:

decodeByteArray in interface Decoder

Parameters:

length - the length of the array

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeBoolean

public boolean decodeBoolean()
                      throws Exception

Description copied from interface: Decoder

Decodes a boolean.

Specified by:

decodeBoolean in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeFloat

public float decodeFloat()
                  throws Exception

Description copied from interface: Decoder

Decodes a float.

Specified by:

decodeFloat in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding

decodeDouble

public double decodeDouble()
                    throws Exception

Description copied from interface: Decoder

Decodes a double.

Specified by:

decodeDouble in interface Decoder

Returns:

the decoded value

Throws:

Exception - if an error occurs during decoding