Package org.apache.accumulo.server.conf.codec

Class EncodingOptions

java.lang.Object

org.apache.accumulo.server.conf.codec.EncodingOptions

public class EncodingOptions
extends Object

Serialization metadata to allow for evolution of the encoding used for property storage. This info is expected to be stored first in the serialization and uncompressed so that the handling of subsequent fields and data can be processed correctly and without additional processing.

Instances of this class are immutable.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	EncodingVersion_1_0

Method Summary

Modifier and Type	Method	Description
void	encode(DataOutputStream dos)	Write the values to a data stream.
static EncodingOptions	fromDataStream(DataInputStream dis)	Instantiate an instance of EncodingOptions reading the values from an input stream.
int	getEncodingVersion()	get the encoding version of the instance,
boolean	isCompressed()	get if the compress is set.
String	toString()
static EncodingOptions	V1_0(boolean compress)	Instantiate encoding options to use version 1.0 encoding settings.

Methods inherited from class java.lang.Object

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

Field Details

EncodingVersion_1_0

public static final int EncodingVersion_1_0

See Also:

• Constant Field Values

Method Details

V1_0

public static EncodingOptions V1_0(boolean compress)

Instantiate encoding options to use version 1.0 encoding settings.

Parameters:

compress - when true compress the property map.

Returns:

the encoding options.

fromDataStream

public static EncodingOptions fromDataStream(DataInputStream dis)
                                      throws IOException

Instantiate an instance of EncodingOptions reading the values from an input stream. Typically, the stream will be obtained from reading a byte array from a data store and then creating a stream that reads from that array,

Parameters:

dis - a data input stream

Throws:

IOException - if an exception occurs reading from the input stream.

encode

public void encode(DataOutputStream dos)
            throws IOException

Write the values to a data stream.

Parameters:

dos - a data output stream

Throws:

IOException - if an exception occurs writing the data stream.

getEncodingVersion

public int getEncodingVersion()

get the encoding version of the instance,

Returns:

the encoding version

isCompressed

public boolean isCompressed()

get if the compress is set.

Returns:

true if the payload is compressed, false if not.

toString

public String toString()

Overrides:

toString in class Object