Package org.apache.tapestry5.commons.util

Class AbstractMessages

java.lang.Object

org.apache.tapestry5.commons.util.AbstractMessages

All Implemented Interfaces:

Messages

Direct Known Subclasses:

MapMessages, MessagesImpl

public abstract class AbstractMessages
extends Object
implements Messages

Abstract implementation of Messages that doesn't know where values come from (that information is supplied in a subclass, via the valueForKey(String) method).

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractMessages(Locale locale)

Method Summary

Modifier and Type	Method	Description
boolean	contains(String key)	Returns true if the bundle contains the named key.
String	format(String key, Object... args)	Convenience for accessing a formatter and formatting a localized message with arguments.
String	get(String key)	Returns the localized message for the given key.
MessageFormatter	getFormatter(String key)	Returns a formatter for the message, which can be used to substitute arguments (as per Formatter).
protected abstract String	valueForKey(String key)	Invoked to provide the value for a particular key.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tapestry5.commons.Messages

getKeys

Constructor Detail

AbstractMessages

protected AbstractMessages(Locale locale)

Method Detail

valueForKey

protected abstract String valueForKey(String key)

Invoked to provide the value for a particular key. This may be invoked multiple times even for the same key. The implementation should ignore the case of the key.

Parameters:

key - the key to obtain a value for (case insensitive)

Returns:

the value for the key, or null if this instance can not provide the value

contains

public boolean contains(String key)

Description copied from interface: Messages

Returns true if the bundle contains the named key.

Specified by:

contains in interface Messages

get

public String get(String key)

Description copied from interface: Messages

Returns the localized message for the given key. If catalog does not contain such a key, then a modified version of the key is returned (converted to upper case and enclosed in brackets).

Specified by:

get in interface Messages

Returns:

localized message for key, or placeholder

getFormatter

public MessageFormatter getFormatter(String key)

Description copied from interface: Messages

Returns a formatter for the message, which can be used to substitute arguments (as per Formatter).

Specified by:

getFormatter in interface Messages

Returns:

formattable object

format

public String format(String key,
                     Object... args)

Description copied from interface: Messages

Convenience for accessing a formatter and formatting a localized message with arguments.

Specified by:

format in interface Messages