Class DateColumn

java.lang.Object

io.github.kelsoncm.fwf.columns.AbstractColumn

io.github.kelsoncm.fwf.columns.DateTimeColumn

io.github.kelsoncm.fwf.columns.DateColumn

public class DateColumn
extends DateTimeColumn

Date column supporting custom formatting and zero-padding for null values.

Field Summary

Fields inherited from class DateTimeColumn

format, formatter, javaPattern, requiredFormatNumElements

Fields inherited from class AbstractColumn

description, name, size, start

Constructor Summary

Constructors

Constructor	Description
DateColumn(String name)	Constructs a new DateColumn with a name, defaulting to format "%d%m%Y".
DateColumn(String name, String format)	Constructs a new DateColumn with a name and format.
DateColumn(String name, String format, String description)	Constructs a new DateColumn with a name, format, and description.

Method Summary

Modifier and Type	Method	Description
String	toStr(Object value)	Formats a LocalDate or null into a fixed-width string of exact column size.
Object	toValue(String slice)	Converts a raw fixed-width date string slice into a LocalDate value.

Methods inherited from class DateTimeColumn

calculateSize, convertPythonFormatToJavaPattern, getFormat

Methods inherited from class AbstractColumn

getDescription, getEnd, getName, getSize, getStart, setStart, validateToStrSize

Methods inherited from class Object

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

Constructor Details

DateColumn

public DateColumn(String name,
 String format,
 String description)

Constructs a new DateColumn with a name, format, and description.

Parameters:

name - the column name

format - Python-style date format string

description - human-readable description

DateColumn

public DateColumn(String name,
 String format)

Constructs a new DateColumn with a name and format.

Parameters:

name - the column name

format - Python-style date format string

DateColumn

public DateColumn(String name)

Constructs a new DateColumn with a name, defaulting to format "%d%m%Y".

Parameters:

name - the column name

Method Details

toValue

public Object toValue(String slice)

Converts a raw fixed-width date string slice into a LocalDate value.

Overrides:

toValue in class DateTimeColumn

Parameters:

slice - raw fixed-width substring

Returns:

parsed LocalDate, or null if slice consists entirely of zeros

Throws:

IllegalArgumentException - if slice is null or has an invalid format

toStr

public String toStr(Object value)

Formats a LocalDate or null into a fixed-width string of exact column size.

Overrides:

toStr in class DateTimeColumn

Parameters:

value - LocalDate or null to format

Returns:

formatted date string or zero-filled string of size AbstractColumn.getSize()

Throws:

IllegalArgumentException - if value is not a LocalDate