jenes.utils
Class CSVLogger

java.lang.Object
  jenes.utils.AbstractLogger
      jenes.utils.CSVLogger

public class CSVLogger
extends AbstractLogger

This class defines a StatisticsLogger based on CSV (comma separated values) file. The logger has a schema, made of the fields the user means to record. If the schema is not specified, the logger use the set of keys making a record as schema. The default separator is tab, but a different separator can be specified at instantiation time. The default logfile is named log.csv and placed into the working directory. The logger can record or not the first line with the header made of the field names.

Since:

1.3

Version:

1.3

Author:

Luigi Troiano

Field Summary

Fields inherited from class jenes.utils.AbstractLogger

closed, record, schema

Constructor Summary

CSVLogger(java.lang.String[] schema)
Creates a logger with the specified schema, and log.csv as default filename, tab as default separator.

CSVLogger(java.lang.String[] schema, java.lang.String filename)
Creates a logger with the specified schema and filename, tab as default separator.

CSVLogger(java.lang.String[] schema, java.lang.String filename, java.lang.String separator)
Creates a logger with the specified schema, filename and separator.

CSVLogger(java.lang.String[] schema, java.lang.String filename, java.lang.String separator, boolean header)
Creates a logger with the specified schema, filename and separator.

Method Summary

protected void	doClose() Closes the logger.
protected void	doSave() Saves cached records on media
java.io.PrintWriter	getOut() Return the output stream used for logging.
protected void	store() Stores the current record.

Methods inherited from class jenes.utils.AbstractLogger

close, finalize, get, getFields, getSchema, isRecordComplete, log, put, save

Methods inherited from class java.lang.Object

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

Constructor Detail

CSVLogger

public CSVLogger(java.lang.String[] schema)
          throws java.io.FileNotFoundException

Creates a logger with the specified schema, and log.csv as default filename, tab as default separator. The header is placed on the first line.

Parameters:

schema - - the array making the schema of records

Throws:

java.io.FileNotFoundException

CSVLogger

public CSVLogger(java.lang.String[] schema,
                 java.lang.String filename)
          throws java.io.FileNotFoundException

Creates a logger with the specified schema and filename, tab as default separator. The header is placed on the first line.

Parameters:

schema - - the array making the schema of records

filename - - the output filename

Throws:

java.io.FileNotFoundException

CSVLogger

public CSVLogger(java.lang.String[] schema,
                 java.lang.String filename,
                 java.lang.String separator)
          throws java.io.FileNotFoundException

Creates a logger with the specified schema, filename and separator. The header is placed on the first line.

Parameters:

schema - - the array making the schema of records

filename - - the output filename

separator - - the values separator

Throws:

java.io.FileNotFoundException

CSVLogger

public CSVLogger(java.lang.String[] schema,
                 java.lang.String filename,
                 java.lang.String separator,
                 boolean header)
          throws java.io.FileNotFoundException

Creates a logger with the specified schema, filename and separator. The header is placed on the first line if required.

Parameters:

schema - - the array making the schema of records

filename - - the output filename

separator - - the values separator

header - - the header is included if true, otherwise not.

Throws:

java.io.FileNotFoundException

Method Detail

getOut

public java.io.PrintWriter getOut()

Return the output stream used for logging.

Returns:

the log writer

store

protected void store()

Description copied from class: AbstractLogger

Stores the current record.

Specified by:

store in class AbstractLogger

doSave

protected void doSave()

Description copied from class: AbstractLogger

Saves cached records on media

Specified by:

doSave in class AbstractLogger

doClose

protected void doClose()

Description copied from class: AbstractLogger

Closes the logger. Any further log is not allowed.

Specified by:

doClose in class AbstractLogger