org.apache.empire.commons

Class ColumnUtils

java.lang.Object

org.apache.empire.commons.ColumnUtils

public class ColumnUtils
extends Object

ColumnUtils This class contains a set of generic functions for Columns

Author:

doebele

Constructor Summary

Constructors

Constructor and Description
ColumnUtils()

Method Summary

Modifier and Type	Method and Description
Object	getColumnAttribute(ColumnExpr columnExpr, String name) Returns the column attribute
int	getColumnMaxLength(ColumnExpr columnExpr)
NumberFormat	getColumnNumberFormat(ColumnExpr columnExpr, Locale locale)
double	getColumnSize(ColumnExpr columnExpr) Return the size of the column of 0.0d if unknown
static ColumnUtils	getInstance()
static int	getMaxLength(ColumnExpr columnExpr) Return the maximum character length of a columnExpr
static Number	getMaxValue(ColumnExpr columnExpr) Returns the maximum allowed value
static int	getMinLength(ColumnExpr columnExpr) Returns the minimum length, usually 0
static Number	getMinValue(ColumnExpr columnExpr) Returns the maximum allowed value or 0 if not set
static NumberFormat	getNumberFormat(ColumnExpr columnExpr, Locale locale) Returns the number format for a particular columnExpr
void	setColumnNumberFormat(ColumnExpr columnExpr, String numberType, boolean groupSeparator)
static void	setInstance(ColumnUtils columnUtils)
static <T extends ColumnExpr> T	setMinMaxValue(T columnExpr, Number minValue, Number maxValue) Set the minimum and maximum values of a columnExpr
static <T extends ColumnExpr> T	setNumberFormat(T columnExpr, String numberType, boolean groupSeparator) Sets the number format options for a columnExpr

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnUtils

public ColumnUtils()

Method Detail

getInstance

public static ColumnUtils getInstance()

setInstance

public static void setInstance(ColumnUtils columnUtils)

getMinLength

public static int getMinLength(ColumnExpr columnExpr)

Returns the minimum length, usually 0

Parameters:

columnExpr - the columnExpr

Returns:

the minimum length

getMaxLength

public static int getMaxLength(ColumnExpr columnExpr)

Return the maximum character length of a columnExpr

Parameters:

columnExpr - the columnExpr

Returns:

the max number or characters

getMinValue

public static Number getMinValue(ColumnExpr columnExpr)

Returns the maximum allowed value or 0 if not set

Parameters:

columnExpr - the columnExpr

Returns:

the minimum value

getMaxValue

public static Number getMaxValue(ColumnExpr columnExpr)

Returns the maximum allowed value

Parameters:

columnExpr - the columnExpr

Returns:

the maximum value

setMinMaxValue

public static <T extends ColumnExpr> T setMinMaxValue(T columnExpr,
                                                      Number minValue,
                                                      Number maxValue)

Set the minimum and maximum values of a columnExpr

Parameters:

columnExpr - the columnExpr

minValue - the min value

maxValue - the max value

Returns:

the columnExpr

getNumberFormat

public static NumberFormat getNumberFormat(ColumnExpr columnExpr,
                                           Locale locale)

Returns the number format for a particular columnExpr

Parameters:

columnExpr - the columnExpr

locale - the locale for which to get the format

Returns:

the NumberFormat

setNumberFormat

public static <T extends ColumnExpr> T setNumberFormat(T columnExpr,
                                                       String numberType,
                                                       boolean groupSeparator)

Sets the number format options for a columnExpr

Parameters:

columnExpr - the column expression

numberType - the number type

groupSeparator - should be used

Returns:

the columnExpr

getColumnAttribute

public Object getColumnAttribute(ColumnExpr columnExpr,
                                 String name)

Returns the column attribute

Parameters:

columnExpr - the column expression

name - the attribute name

Returns:

the attribute value

getColumnSize

public double getColumnSize(ColumnExpr columnExpr)

Return the size of the column of 0.0d if unknown

Parameters:

columnExpr - the column expression

Returns:

the size in the form [integer digits].[fraction digits]

getColumnMaxLength

public int getColumnMaxLength(ColumnExpr columnExpr)

getColumnNumberFormat

public NumberFormat getColumnNumberFormat(ColumnExpr columnExpr,
                                          Locale locale)

setColumnNumberFormat

public void setColumnNumberFormat(ColumnExpr columnExpr,
                                  String numberType,
                                  boolean groupSeparator)