Package csv

Interface TableReader

All Superinterfaces:

Iterable<Object[]>, Iterator<Object[]>

All Known Implementing Classes:

AbstractColumnFilter, AbstractRowFilter, AbstractStreamTableReader, AbstractTableReader, CSVReader, DefaultColumnFilter, ExcelReader, IndexRowFilter, JdbcReader, JTableReader, XmlReader

public interface TableReader
extends Iterator<Object[]>, Iterable<Object[]>

Introduces an interface for other implementations of table reading interfaces. The Reader interface defines an important rule: header rows are never delivered by Iterator.next() but by getHeaderRow() instead. All implementations of this class must follow this rule.

Author:

RalphSchuster

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the reader.
int	getColumnIndex(String name)	Returns the column index of given column name.
Object[]	getHeaderRow()	Returns the header row.
int	getMinimumColumnCount()	Returns the minimum number of columns to be returned by Iterator.next().
boolean	hasHeaderRow()	Tells whether the underlying stream has a header row or not
void	open()	Opens the reader or resets it.
void	registerCommentCallBack(CommentCallback callback)	Registers a comment callback.
void	reset()	Resets the reader.
void	setHasHeaderRow(boolean hasHeaderRow)	Tells the reader whether the underlying stream will treat first row as header row.
void	setMinimumColumnCount(int length)	Sets the minimum number of columns to be returned by Iterator.next().
void	unregisterCommentCallBack(CommentCallback callback)	Unregisters a comment callback.

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Method Detail

setHasHeaderRow

void setHasHeaderRow(boolean hasHeaderRow)

Tells the reader whether the underlying stream will treat first row as header row.

Parameters:

hasHeaderRow - true if there is a header row.

hasHeaderRow

boolean hasHeaderRow()

Tells whether the underlying stream has a header row or not

Returns:

true if there is a header row.

getHeaderRow

Object[] getHeaderRow()

Returns the header row. Please note that header rows are never delivered through Iterator.next().

Returns:

header row if such was defined.

getColumnIndex

int getColumnIndex(String name)

Returns the column index of given column name. The first column with given name will be returned.

Parameters:

name - name of column

Returns:

index of column or -1 if it does not exist.

open

void open()

Opens the reader or resets it.

reset

void reset()

Resets the reader.

close

void close()

Closes the reader.

registerCommentCallBack

void registerCommentCallBack(CommentCallback callback)

Registers a comment callback. The callback will be executed when a comment is detected in input. Note that not all implementations actually support comments.

Parameters:

callback - callback to be registered

unregisterCommentCallBack

void unregisterCommentCallBack(CommentCallback callback)

Unregisters a comment callback. Note that not all implementations actually support comments.

Parameters:

callback - callback to be unregistered

setMinimumColumnCount

void setMinimumColumnCount(int length)

Sets the minimum number of columns to be returned by Iterator.next().

Parameters:

length - number of columns

getMinimumColumnCount

int getMinimumColumnCount()

Returns the minimum number of columns to be returned by Iterator.next().

Returns:

length number of columns