org.thegalactic.context.io

Class ContextSerializerFIMI

java.lang.Object

org.thegalactic.context.io.ContextSerializerFIMI

All Implemented Interfaces:

Reader<Context>, Writer<Context>

public final class ContextSerializerFIMI
extends Object
implements Reader<Context>, Writer<Context>

This class defines the way for reading a context from a text file.

Method Summary

Modifier and Type	Method and Description
static ContextSerializerFIMI	getInstance() Return the singleton instance of this class.
void	read(Context context, BufferedReader file) Read a context from a file.
static void	register() Register this class for reading and writing .dat files.
void	write(Context context, BufferedWriter file) Write a context to a file.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static ContextSerializerFIMI getInstance()

Return the singleton instance of this class.

Returns:

the singleton instance

register

public static void register()

Register this class for reading and writing .dat files.

read

public void read(Context context,
                 BufferedReader file)
          throws IOException

Read a context from a file.

The FIMI dat format file is respected:

The file format is structured as follows:

Each line corresponds to an observation Each line is made of a list of integers corresponding to attributes separated by a space

1 3
2 4 5
1 2
3 4 5

For reading convinience, observations are labelled with ‘O’ + LineNumber.

Be careful when using a downloaded file: an empty line at the end of the file gives an observation with no attributes

Specified by:

read in interface Reader<Context>

Parameters:

context - a context to read

file - a file

Throws:

IOException - When an IOException occurs

write

public void write(Context context,
                  BufferedWriter file)
           throws IOException

Write a context to a file.

The FIMI dat format file is respected :

The file format is structured as follows:

Each line corresponds to an observation Each line is made of a list of integers corresponding to attributes separated by a space

1 3
2 4 5
1 2
3 4 5

Specified by:

write in interface Writer<Context>

Parameters:

context - a context to write

file - a file

Throws:

IOException - When an IOException occurs