net.sf.basedb.util.parser
Class ColumnMapper

java.lang.Object
  net.sf.basedb.util.parser.ColumnMapper

All Implemented Interfaces:

Mapper

public class ColumnMapper
extends Object
implements Mapper

Returns the string found in the column given by the index set in the constructor. If the index is larger than the number of columns, an empty string is returned.

Version:

2.0

Author:

nicklas

Last modified

$Date: 2008-09-11 22:08:14 +0200 (Thu, 11 Sep 2008) $

Field Summary

private int	index
private String	name
private boolean	nullIfException
private NumberFormat	parser
private ParsePosition	pos

Constructor Summary

ColumnMapper(int index, String name)
Create a new column mapper.

ColumnMapper(int index, String name, NumberFormat parser)
Deprecated. Use ColumnMapper(int, String, NumberFormat, boolean)

ColumnMapper(int index, String name, NumberFormat parser, boolean nullIfException)
Create a new column mapper using a specific number format.

Method Summary

private Double	getDouble(String value)
Float	getFloat(FlatFileParser.Data data) Get the value for the line of data as a float.
Integer	getInt(FlatFileParser.Data data) Get the value for the line of data as an integer.
String	getValue(FlatFileParser.Data data) Get the value in the data objects column with the index specified in the constructor.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

index

private final int index

name

private final String name

parser

private final NumberFormat parser

pos

private final ParsePosition pos

nullIfException

private final boolean nullIfException

Constructor Detail

ColumnMapper

public ColumnMapper(int index,
                    String name)

Create a new column mapper.

Parameters:

index - The index of the data column to use, starting at 0

name - An optional name of the column, use in the toString method

ColumnMapper

public ColumnMapper(int index,
                    String name,
                    NumberFormat parser)

Deprecated. Use ColumnMapper(int, String, NumberFormat, boolean)

Create a new column mapper using a specific number format.

ColumnMapper

public ColumnMapper(int index,
                    String name,
                    NumberFormat parser,
                    boolean nullIfException)

Create a new column mapper using a specific number format.

Parameters:

index - The index of the data column to use, starting at 0

name - An optional name of the column, use in the toString method

nullIfException - If TRUE, the mapper returns null for unparsable numeric values, otherwise an excption is thrown

parser - The parser to use or null to use Double.valueOf()

Since:

2.4

Method Detail

getValue

public String getValue(FlatFileParser.Data data)

Get the value in the data objects column with the index specified in the constructor.

Specified by:

getValue in interface Mapper

Parameters:

data - The line of data

Returns:

The value or null if the index is out of bounds

getInt

public Integer getInt(FlatFileParser.Data data)

Description copied from interface: Mapper

Get the value for the line of data as an integer.

Specified by:

getInt in interface Mapper

Parameters:

data - The line of data

Returns:

The value as an integer

getFloat

public Float getFloat(FlatFileParser.Data data)

Description copied from interface: Mapper

Get the value for the line of data as a float.

Specified by:

getFloat in interface Mapper

Parameters:

data - The line of data

Returns:

The value as a float

toString

public String toString()

Overrides:

toString in class Object

getDouble

private Double getDouble(String value)