com.opencsv.bean

Interface CsvConverter

All Known Implementing Classes:

AbstractCsvConverter, ConverterDate, ConverterNumber, ConverterPrimitiveTypes

public interface CsvConverter

Classes implementing this interface perform a conversion from String to some type on reading and some type to String on writing.

This interface is used by BeanField to perform the actual data conversion.

Synchronization: All implementations of this interface must be thread-safe.

Since:

4.2

Author:

Andrew Rucker Jones

Method Summary

Modifier and Type	Method and Description
Object	convertToRead(String value) Method for converting from a string to the proper data type of the destination field.
String	convertToWrite(Object value) Method for converting from the data type of the destination field to a string.
void	setErrorLocale(Locale errorLocale) Sets the locale for all error messages.
void	setLocale(String locale) If not null or empty, specifies the locale used for converting locale-specific data types for reading.
void	setType(Class<?> type) Sets the class of the type of the data being processed.
void	setWriteLocale(String writeLocale) If not null or empty, specifies the locale used for converting locale-specific data types for writing.

Method Detail

convertToRead

Object convertToRead(String value)
              throws CsvDataTypeMismatchException,
                     CsvConstraintViolationException

Method for converting from a string to the proper data type of the destination field.

Parameters:

value - The string from the selected field of the CSV file. If the field is marked as required in the annotation, this value is guaranteed not to be null, empty or blank according to StringUtils.isBlank(java.lang.CharSequence)

Returns:

An Object representing the input data converted into the proper type

Throws:

CsvDataTypeMismatchException - If the input string cannot be converted into the proper type

CsvConstraintViolationException - When the internal structure of data would be violated by the data in the CSV file

convertToWrite

String convertToWrite(Object value)
               throws CsvDataTypeMismatchException

Method for converting from the data type of the destination field to a string.

Parameters:

value - The contents of the field currently being processed from the bean to be written. Can be null if the field is not marked as required.

Returns:

A string representation of the value of the field in question in the bean passed in, or an empty string if value is null

Throws:

CsvDataTypeMismatchException - If the input cannot be converted to a string by this converter

setErrorLocale

void setErrorLocale(Locale errorLocale)

Sets the locale for all error messages.

Parameters:

errorLocale - Locale for error messages. If null, the default locale is used.

setType

void setType(Class<?> type)

Sets the class of the type of the data being processed.

Parameters:

type - The type of the data being processed

Since:

4.3

setLocale

void setLocale(String locale)

If not null or empty, specifies the locale used for converting locale-specific data types for reading.

Parameters:

locale - The name of the locale for locale-sensitive data

Since:

4.3

setWriteLocale

void setWriteLocale(String writeLocale)

If not null or empty, specifies the locale used for converting locale-specific data types for writing.

Parameters:

writeLocale - The name of the locale for locale-sensitive data

Since:

5.0