org.eclipse.birt.chart.computation
Class ValueFormatter

java.lang.Object
  org.eclipse.birt.chart.computation.ValueFormatter

public final class ValueFormatter
extends java.lang.Object

This class handles the formatting work of any data value.

Field Summary

static java.lang.String

DECIMAL_FORMAT_PATTERN

Constructor Summary

ValueFormatter()

Method Summary

static java.lang.String	format(java.lang.Object oValue, FormatSpecifier formatSpecifier, com.ibm.icu.util.ULocale lcl, java.lang.Object oCachedJavaFormatter) Returns the formatted string representation of given object.
static java.lang.String	getNumericPattern(double dValue) Returns an auto computed decimal format pattern for category data or axis label.
static java.lang.String	getNumericPattern(java.lang.Number num) Returns an auto computed number pattern.
static java.lang.Number	normalizeDouble(java.lang.Double value) Normalize double value to avoid error precision.
static FormatSpecifier	resetFormatSpecifier(java.lang.Object oValue, FormatSpecifier fs) Under some cases, the specified format specifier is not suitable for current value, the format specifier must be reset to fit current value.

Methods inherited from class java.lang.Object

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

Field Detail

DECIMAL_FORMAT_PATTERN

public static final java.lang.String DECIMAL_FORMAT_PATTERN

See Also:

Constant Field Values

Constructor Detail

ValueFormatter

public ValueFormatter()

Method Detail

format

public static final java.lang.String format(java.lang.Object oValue,
                                            FormatSpecifier formatSpecifier,
                                            com.ibm.icu.util.ULocale lcl,
                                            java.lang.Object oCachedJavaFormatter)
                                     throws ChartException

Returns the formatted string representation of given object.

Parameters:

oValue -

formatSpecifier -

lcl -

Returns:

formatted string

Throws:

ChartException

resetFormatSpecifier

public static FormatSpecifier resetFormatSpecifier(java.lang.Object oValue,
                                                   FormatSpecifier fs)

Under some cases, the specified format specifier is not suitable for current value, the format specifier must be reset to fit current value.

Parameters:

oValue -

fs -

Returns:

format specifier.

getNumericPattern

public static java.lang.String getNumericPattern(java.lang.Number num)

Returns an auto computed number pattern.

Parameters:

num - number value

Returns:

number pattern

Since:

2.5.3

getNumericPattern

public static java.lang.String getNumericPattern(double dValue)

Returns an auto computed decimal format pattern for category data or axis label. If it's an integer, no decimal point and no separator. This is also used for representing logarithmic values.

Returns:

numeric pattern

normalizeDouble

public static java.lang.Number normalizeDouble(java.lang.Double value)

Normalize double value to avoid error precision.

Parameters:

value -

Returns:

normalized value of specified double.