Package org.evolvis.tartools.csvfile

Class CSVFileWriter

java.lang.Object

org.evolvis.tartools.csvfile.CSVFile

org.evolvis.tartools.csvfile.CSVFileWriter

Direct Known Subclasses:

SSVFileWriter

public class CSVFileWriter
extends CSVFile

CSVFileWriter is a class derived from CSVFile used to format some fields into a new CSV file. Note: the presence of a sole quote character (“text qualifier”) in an output field breaks the CSV spec as the field is then not quoted‽

Author:

Fabrizio Fazzino

Field Summary

Fields

Modifier and Type	Field	Description
protected PrintWriter	out	The print writer linked to the CSV file to be written.

Fields inherited from class org.evolvis.tartools.csvfile.CSVFile

DEFAULT_FIELD_SEPARATOR, DEFAULT_TEXT_QUALIFIER, fieldSeparator, textQualifier

Constructor Summary

Constructors

Constructor	Description
CSVFileWriter(Writer writer, char sep, char qual)	CSVFileWriter constructor with given field separator and text qualifier.
CSVFileWriter(String outputFileName)	CSVFileWriter constructor just need the name of the CSV file that will be written.
CSVFileWriter(String outputFileName, char sep)	CSVFileWriter constructor with a given field separator.
CSVFileWriter(String outputFileName, char sep, char qual)	CSVFileWriter constructor with given field separator and text qualifier.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the output CSV file.
protected void	emitRowSeparator()	Called after a list of fields has been output.
protected String	prepareField(Object field)	Prepares a field for output by stringifying the passed object and quoting it.
void	writeFields(List<?> fields)	Joins the fields and writes them as a new line to the CSV file.

Methods inherited from class org.evolvis.tartools.csvfile.CSVFile

getFieldSeparator, getTextQualifier, setFieldSeparator, setTextQualifier

Methods inherited from class java.lang.Object

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

Field Detail

out

protected final PrintWriter out

The print writer linked to the CSV file to be written.

Constructor Detail

CSVFileWriter

public CSVFileWriter(String outputFileName)
              throws IOException

CSVFileWriter constructor just need the name of the CSV file that will be written.

Parameters:

outputFileName - The name of the CSV file to be opened for writing

Throws:

IOException - if an error occurs while creating the file

CSVFileWriter

public CSVFileWriter(String outputFileName,
                     char sep)
              throws IOException

CSVFileWriter constructor with a given field separator.

Parameters:

outputFileName - The name of the CSV file to be opened for writing

sep - The field separator to be used; overwrites the default one

Throws:

IOException - if an error occurs while creating the file

CSVFileWriter

public CSVFileWriter(String outputFileName,
                     char sep,
                     char qual)
              throws IOException

CSVFileWriter constructor with given field separator and text qualifier.

Parameters:

outputFileName - The name of the CSV file to be opened for writing

sep - The field separator to be used; overwrites the default one

qual - The text qualifier to be used; overwrites the default one

Throws:

IOException - if an error occurs while creating the file

CSVFileWriter

public CSVFileWriter(Writer writer,
                     char sep,
                     char qual)

CSVFileWriter constructor with given field separator and text qualifier.

Parameters:

writer - The Writer to be opened for writing

sep - The field separator to be used; overwrites the default one

qual - The text qualifier to be used; overwrites the default one

Method Detail

close

public void close()

Closes the output CSV file.

writeFields

public void writeFields(List<?> fields)

Joins the fields and writes them as a new line to the CSV file.

Parameters:

fields - The list of strings containing the fields

emitRowSeparator

protected void emitRowSeparator()

Called after a list of fields has been output.

prepareField

protected String prepareField(Object field)

Prepares a field for output by stringifying the passed object and quoting it.

Parameters:

field - to prepare

Returns:

quoted string