Package csv.util

Class CSVUtils

java.lang.Object

csv.util.CSVUtils

public class CSVUtils
extends Object

Various methods for working with TableReader and TableWriter. This class provides useful method for easily copying table-like data from either JDBC results, JTable or table readers into table writers.

Author:

RalphSchuster

Constructor Summary

Constructors

Constructor	Description
CSVUtils()

Method Summary

Modifier and Type	Method	Description
static String[]	convertArray(Object[] columns, int minLength)	Returns an array from the columns.
static Object[]	convertList(List<?> columns, int minLength)	Trims array to correct length of minimum column count.
static void	copy(TableReader reader, TableWriter writer)	Copies content from one reader to another writer without header row.
static void	copy(TableReader reader, TableWriter writer, boolean copyHeaderRow)	Copies content from one reader to another writer.
static int	copy(Object[][] arr, TableWriter writer)	Copies the arrays from the iterator to the stream.
static int	copy(Collection<? extends Object[]> collection, TableWriter writer)	Copies the arrays from the collection to the stream.
static int	copy(Iterator<? extends Object[]> i, TableWriter writer)	Copies the arrays from the iterator to the stream.
static <T> int	copyBeans(Collection<T> collection, TableWriter writer)	Copies the beans from the collection to the stream.
static <T> int	copyBeans(Iterator<T> i, TableWriter writer)	Copies the beans from the collection to the stream.
static <T> int	copyBeans(T[] arr, TableWriter writer)	Copies the beans from the array to the stream.
static void	copyHeader(ResultSet resultSet, TableWriter writer)	Copies the header of the JDBC result set into the table writer.
static void	copyTableHeader(JTableHeader tableHeader, TableWriter writer)	Copies the table header into the table writer.
static Object[]	extendArray(Object[] columns, int minLength)	Trims array to correct length of minimum column count.
static String[]	extendArray(String[] columns, int minLength)	Trims array to correct length of minimum column count.
static Charset	getDefaultCharset()	Returns the defaultCharset.
static void	setDefaultCharset(String defaultCharset)	Sets the defaultCharset.
static void	setDefaultCharset(Charset defaultCharset)	Sets the defaultCharset.

Methods inherited from class java.lang.Object

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

Constructor Details

CSVUtils

public CSVUtils()

Method Details

getDefaultCharset

public static Charset getDefaultCharset()

Returns the defaultCharset.

Returns:

the defaultCharset

setDefaultCharset

public static void setDefaultCharset(Charset defaultCharset)

Sets the defaultCharset.

Parameters:

defaultCharset - the defaultCharset to set

setDefaultCharset

public static void setDefaultCharset(String defaultCharset)

Sets the defaultCharset.

Parameters:

defaultCharset - the defaultCharset to set

copyHeader

public static void copyHeader(ResultSet resultSet,
 TableWriter writer)
                       throws Exception

Copies the header of the JDBC result set into the table writer.

Parameters:

resultSet - result set to copy

writer - CSV writer to write to

Throws:

Exception - if an exception occurs

copyTableHeader

public static void copyTableHeader(JTableHeader tableHeader,
 TableWriter writer)
                            throws Exception

Copies the table header into the table writer.

Parameters:

tableHeader - table header to get content from

writer - table writer

Throws:

Exception - when an exception occurs

copy

public static void copy(TableReader reader,
 TableWriter writer)
                 throws Exception

Copies content from one reader to another writer without header row.

Parameters:

reader - reader to copy data from

writer - writer to write data to

Throws:

Exception - when an exception occurs

copy

public static void copy(TableReader reader,
 TableWriter writer,
 boolean copyHeaderRow)
                 throws Exception

Copies content from one reader to another writer. The header row will only be written if the reader delivers such a row.

Parameters:

reader - reader to copy data from

writer - writer to write data to

copyHeaderRow - whether a header row shall be copied too (only if reader supports it)

Throws:

Exception - when an exception occurs

copy

public static int copy(Collection<? extends Object[]> collection,
 TableWriter writer)
                throws IOException

Copies the arrays from the collection to the stream.

Parameters:

collection - collection that contains rows

writer - writer to write rows to

Returns:

number of rows written

Throws:

IOException - when there is a problem with the writer.

copy

public static int copy(Iterator<? extends Object[]> i,
 TableWriter writer)
                throws IOException

Copies the arrays from the iterator to the stream.

Parameters:

i - iterator that delivers rows

writer - writer to write rows to

Returns:

number of rows written

Throws:

IOException - when there is a problem with the writer.

copy

public static int copy(Object[][] arr,
 TableWriter writer)
                throws IOException

Copies the arrays from the iterator to the stream.

Parameters:

arr - two-dimensional array with rows and columns

writer - writer to write rows to

Returns:

number of rows written

Throws:

IOException - when there is a problem with the writer.

copyBeans

public static <T> int copyBeans(Collection<T> collection,
 TableWriter writer)
                         throws IOException

Copies the beans from the collection to the stream. The method will use BeanWriter

Type Parameters:

T - The type of bean in the collection

Parameters:

collection - collection that contains JavaBeans

writer - writer to write rows to

Returns:

number of rows written

Throws:

IOException - when there is a problem with the writer.

copyBeans

public static <T> int copyBeans(Iterator<T> i,
 TableWriter writer)
                         throws IOException

Copies the beans from the collection to the stream. The method will use BeanWriter

Type Parameters:

T - The type of bean in the collection

Parameters:

i - iterator that delivers JavaBeans

writer - writer to write rows to

Returns:

number of rows written

Throws:

IOException - when there is a problem with the writer.

copyBeans

public static <T> int copyBeans(T[] arr,
 TableWriter writer)
                         throws IOException

Copies the beans from the array to the stream. The method will use BeanWriter

Type Parameters:

T - The type of bean in the array

Parameters:

arr - array of JavaBeans

writer - writer to write rows to

Returns:

number of rows written

Throws:

IOException - when there is a problem with the writer.

convertArray

public static String[] convertArray(Object[] columns,
 int minLength)

Returns an array from the columns. This function exists for convinience to take care of minimum column count.

Parameters:

columns - columns to return

minLength - minimum number of columns in return array

Returns:

arrray with column values

extendArray

public static Object[] extendArray(Object[] columns,
 int minLength)

Trims array to correct length of minimum column count.

Parameters:

columns - columns array

minLength - minimum number of columns

Returns:

array with at least minimum number of columns defined.

extendArray

public static String[] extendArray(String[] columns,
 int minLength)

Trims array to correct length of minimum column count.

Parameters:

columns - columns array

minLength - minimum number of columns

Returns:

array with at least minimum number of columns defined.

convertList

public static Object[] convertList(List<?> columns,
 int minLength)

Trims array to correct length of minimum column count.

Parameters:

columns - columns list

minLength - minimum number of columns

Returns:

array with at least minimum number of columns defined.