Class RowDescriptor

java.lang.Object

io.github.kelsoncm.fwf.descriptors.RowDescriptor

Direct Known Subclasses:

DetailRowDescriptor, FooterRowDescriptor, HeaderRowDescriptor

public class RowDescriptor
extends Object

Descriptor for a row consisting of multiple ordered columns.

Automatically computes 1-based start/end positions for every column in order and validates that column boundaries are contiguous without overlaps or gaps.

Field Summary

Fields

Modifier and Type	Field	Description
protected final List<AbstractColumn>	columns	Ordered list of column definitions for this row.

Constructor Summary

Constructors

Constructor	Description
RowDescriptor(List<AbstractColumn> columns)	Constructs a new RowDescriptor with a list of column definitions.

Method Summary

Modifier and Type	Method	Description
List<AbstractColumn>	getColumns()	Gets the list of column definitions.
int	getLineSize()	Gets the total line size (in characters) required by this row.
Map<String,Object>	getValues(String rowLine)	Parses a raw line string into a map of column names to parsed values.
void	validatePositions()	Validates that column positions start at 1 and are strictly contiguous.

Methods inherited from class Object

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

Field Details

columns

protected final List<AbstractColumn> columns

Ordered list of column definitions for this row.

Constructor Details

RowDescriptor

public RowDescriptor(List<AbstractColumn> columns)

Constructs a new RowDescriptor with a list of column definitions.

Parameters:

columns - non-null, non-empty list of AbstractColumn instances

Throws:

IllegalArgumentException - if columns is null or empty

Method Details

getColumns

public List<AbstractColumn> getColumns()

Gets the list of column definitions.

Returns:

unmodifiable/ordered list of columns

getLineSize

public int getLineSize()

Gets the total line size (in characters) required by this row.

Returns:

total line size in characters

validatePositions

public void validatePositions()

Validates that column positions start at 1 and are strictly contiguous.

Throws:

IllegalArgumentException - if column positions are invalid or contain gaps/overlaps

getValues

public Map<String,Object> getValues(String rowLine)

Parses a raw line string into a map of column names to parsed values.

Parameters:

rowLine - raw fixed-width row line

Returns:

map of column names to parsed values