Package org.springframework.beans.propertyeditors

Class CustomNumberEditor

java.lang.Object

java.beans.PropertyEditorSupport

org.springframework.beans.propertyeditors.CustomNumberEditor

All Implemented Interfaces:

PropertyEditor

public class CustomNumberEditor
extends PropertyEditorSupport

Property editor for any Number subclass such as Short, Integer, Long, BigInteger, Float, Double, BigDecimal. Can use a given NumberFormat for (locale-specific) parsing and rendering, or alternatively the default decode / valueOf / toString methods.

This is not meant to be used as system PropertyEditor but rather as locale-specific number editor within custom controller code, parsing user-entered number strings into Number properties of beans and rendering them in the UI form.

In web MVC code, this editor will typically be registered with binder.registerCustomEditor calls.

Since:

06.06.2003

Author:

Juergen Hoeller

See Also:

• Number
• NumberFormat
• DataBinder.registerCustomEditor(java.lang.Class<?>, java.beans.PropertyEditor)

Constructor Summary

Constructors

Constructor	Description
CustomNumberEditor(Class<? extends Number> numberClass, boolean allowEmpty)	Create a new CustomNumberEditor instance, using the default valueOf methods for parsing and toString methods for rendering.
CustomNumberEditor(Class<? extends Number> numberClass, NumberFormat numberFormat, boolean allowEmpty)	Create a new CustomNumberEditor instance, using the given NumberFormat for parsing and rendering.

Method Summary

Modifier and Type	Method	Description
String	getAsText()	Format the Number as String, using the specified NumberFormat.
void	setAsText(String text)	Parse the Number from the given text, using the specified NumberFormat.
void	setValue(Object value)	Coerce a Number value into the required target class, if necessary.

Methods inherited from class java.beans.PropertyEditorSupport

addPropertyChangeListener, firePropertyChange, getCustomEditor, getJavaInitializationString, getSource, getTags, getValue, isPaintable, paintValue, removePropertyChangeListener, setSource, supportsCustomEditor

Methods inherited from class java.lang.Object

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

Constructor Details

CustomNumberEditor

public CustomNumberEditor(Class<? extends Number> numberClass,
 boolean allowEmpty)
                   throws IllegalArgumentException

Create a new CustomNumberEditor instance, using the default valueOf methods for parsing and toString methods for rendering.

The "allowEmpty" parameter states if an empty String should be allowed for parsing, i.e. get interpreted as null value. Else, an IllegalArgumentException gets thrown in that case.

Parameters:

numberClass - the Number subclass to generate

allowEmpty - if empty strings should be allowed

Throws:

IllegalArgumentException - if an invalid numberClass has been specified

See Also:

• NumberUtils.parseNumber(String, Class)
• Integer.valueOf(java.lang.String, int)
• Integer.toString(int, int)

CustomNumberEditor

public CustomNumberEditor(Class<? extends Number> numberClass,
 @Nullable
 NumberFormat numberFormat,
 boolean allowEmpty)
                   throws IllegalArgumentException

Create a new CustomNumberEditor instance, using the given NumberFormat for parsing and rendering.

The allowEmpty parameter states if an empty String should be allowed for parsing, i.e. get interpreted as null value. Else, an IllegalArgumentException gets thrown in that case.

Parameters:

numberClass - the Number subclass to generate

numberFormat - the NumberFormat to use for parsing and rendering

allowEmpty - if empty strings should be allowed

Throws:

IllegalArgumentException - if an invalid numberClass has been specified

See Also:

• NumberUtils.parseNumber(String, Class, java.text.NumberFormat)
• NumberFormat.parse(java.lang.String, java.text.ParsePosition)
• NumberFormat.format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)

Method Details

setAsText

public void setAsText(String text)
               throws IllegalArgumentException

Parse the Number from the given text, using the specified NumberFormat.

Specified by:

setAsText in interface PropertyEditor

Overrides:

setAsText in class PropertyEditorSupport

Throws:

IllegalArgumentException

setValue

public void setValue(@Nullable
 Object value)

Coerce a Number value into the required target class, if necessary.

Specified by:

setValue in interface PropertyEditor

Overrides:

setValue in class PropertyEditorSupport

getAsText

public String getAsText()

Format the Number as String, using the specified NumberFormat.

Specified by:

getAsText in interface PropertyEditor

Overrides:

getAsText in class PropertyEditorSupport