org.springframework.beans.propertyeditors

Class CustomDateEditor

java.lang.Object

java.beans.PropertyEditorSupport

org.springframework.beans.propertyeditors.CustomDateEditor

All Implemented Interfaces:

java.beans.PropertyEditor

public class CustomDateEditor
extends java.beans.PropertyEditorSupport

Property editor for java.util.Date, supporting a custom java.text.DateFormat.

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

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

Since:

28.04.2003

Author:

Juergen Hoeller

See Also:

Date, DateFormat, DataBinder.registerCustomEditor(java.lang.Class<?>, java.beans.PropertyEditor)

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	allowEmpty
private java.text.DateFormat	dateFormat
private int	exactDateLength

Constructor Summary

Constructors

Constructor and Description
CustomDateEditor(java.text.DateFormat dateFormat, boolean allowEmpty) Create a new CustomDateEditor instance, using the given DateFormat for parsing and rendering.
CustomDateEditor(java.text.DateFormat dateFormat, boolean allowEmpty, int exactDateLength) Create a new CustomDateEditor instance, using the given DateFormat for parsing and rendering.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getAsText() Format the Date as String, using the specified DateFormat.
void	setAsText(java.lang.String text) Parse the Date from the given text, using the specified DateFormat.

Methods inherited from class java.beans.PropertyEditorSupport

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

Methods inherited from class java.lang.Object

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

Field Detail

dateFormat

private final java.text.DateFormat dateFormat

allowEmpty

private final boolean allowEmpty

exactDateLength

private final int exactDateLength

Constructor Detail

CustomDateEditor

public CustomDateEditor(java.text.DateFormat dateFormat,
                        boolean allowEmpty)

Create a new CustomDateEditor instance, using the given DateFormat for parsing and rendering.

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

Parameters:

dateFormat - DateFormat to use for parsing and rendering

allowEmpty - if empty strings should be allowed

CustomDateEditor

public CustomDateEditor(java.text.DateFormat dateFormat,
                        boolean allowEmpty,
                        int exactDateLength)

Create a new CustomDateEditor instance, using the given DateFormat for parsing and rendering.

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

The "exactDateLength" parameter states that IllegalArgumentException gets thrown if the String does not exactly match the length specified. This is useful because SimpleDateFormat does not enforce strict parsing of the year part, not even with setLenient(false). Without an "exactDateLength" specified, the "01/01/05" would get parsed to "01/01/0005". However, even with an "exactDateLength" specified, prepended zeros in the day or month part may still allow for a shorter year part, so consider this as just one more assertion that gets you closer to the intended date format.

Parameters:

dateFormat - DateFormat to use for parsing and rendering

allowEmpty - if empty strings should be allowed

exactDateLength - the exact expected length of the date String

Method Detail

setAsText

public void setAsText(java.lang.String text)
               throws java.lang.IllegalArgumentException

Parse the Date from the given text, using the specified DateFormat.

Specified by:

setAsText in interface java.beans.PropertyEditor

Overrides:

setAsText in class java.beans.PropertyEditorSupport

Throws:

java.lang.IllegalArgumentException

getAsText

public java.lang.String getAsText()

Format the Date as String, using the specified DateFormat.

Specified by:

getAsText in interface java.beans.PropertyEditor

Overrides:

getAsText in class java.beans.PropertyEditorSupport