org.thegalactic.context.io

Class ContextSerializerCsv

java.lang.Object

org.thegalactic.context.io.ContextSerializerCsv

All Implemented Interfaces:

Reader<Context>, Writer<Context>

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

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

Method Summary

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

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static ContextSerializerCsv getInstance()

Return the singleton instance of this class.

Returns:

the singleton instance

register

public static void register()

Register this class for reading .csv files.

read

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

Read a context from a csv file.

The following format is respected:

The first line contains the attribute names, the other lines contains the observations identifier followed by boolean values

"",a,b,c,d,e
1,1,0,1,0,0
2,1,1,0,0,0
3,0,1,0,1,1
4,0,0,1,0,1

If the first attribute is the empty string, the first column corresponds to the individual identifiers. In the other case, the individual identifiers will be generated by successive integers.

a,b,c,d,e
1,0,1,0,0
1,1,0,0,0
0,1,0,1,1
0,0,1,0,1

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 csv file.

The following format is respected:

The first line contains the attribute names, the other lines contains the observations identifier followed by boolean values

"",a,b,c,d,e
1,1,0,1,0,0
2,1,1,0,0,0
3,0,1,0,1,1
4,0,0,1,0,1

Specified by:

write in interface Writer<Context>

Parameters:

context - a context to write

file - a file

Throws:

IOException - When an IOException occurs