java.lang.Object
- org.springframework.context.support.MessageSourceSupport

Direct Known Subclasses:
AbstractMessageSource, DelegatingMessageSource
```
public abstract class MessageSourceSupport
extends Object
```
Base class for message source implementations, providing support infrastructure such as MessageFormat handling but not implementing concrete methods defined in the MessageSource.
AbstractMessageSource derives from this class, providing concrete getMessage implementations that delegate to a central template method for message code resolution.
Since:
2.5.5
Author:
Juergen Hoeller

Field Summary
Fields
Modifier and Type Field Description
protected Log logger
Logger available to subclasses

Constructor Summary
Constructors
Constructor Description
MessageSourceSupport()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected MessageFormat`	`createMessageFormat(String msg, Locale locale)`	Create a MessageFormat for the given message and Locale.
`protected String`	`formatMessage(String msg, Object[] args, Locale locale)`	Format the given message String, using cached MessageFormats.
`protected boolean`	`isAlwaysUseMessageFormat()`	Return whether to always apply the MessageFormat rules, parsing even messages without arguments.
`protected String`	`renderDefaultMessage(String defaultMessage, Object[] args, Locale locale)`	Render the given default message String.
`protected Object[]`	`resolveArguments(Object[] args, Locale locale)`	Template method for resolving argument objects.
`void`	`setAlwaysUseMessageFormat(boolean alwaysUseMessageFormat)`	Set whether to always apply the `MessageFormat` rules, parsing even messages without arguments.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - logger
```
protected final Log logger
```
    Logger available to subclasses
- Constructor Detail
  - MessageSourceSupport
```
public MessageSourceSupport()
```
- Method Detail
  - setAlwaysUseMessageFormat
```
public void setAlwaysUseMessageFormat(boolean alwaysUseMessageFormat)
```
    Set whether to always apply the MessageFormat rules, parsing even messages without arguments.
    Default is "false": Messages without arguments are by default returned as-is, without parsing them through MessageFormat. Set this to "true" to enforce MessageFormat for all messages, expecting all message texts to be written with MessageFormat escaping.
    For example, MessageFormat expects a single quote to be escaped as "''". If your message texts are all written with such escaping, even when not defining argument placeholders, you need to set this flag to "true". Else, only message texts with actual arguments are supposed to be written with MessageFormat escaping.
    See Also:
    MessageFormat
  - isAlwaysUseMessageFormat
```
protected boolean isAlwaysUseMessageFormat()
```
    Return whether to always apply the MessageFormat rules, parsing even messages without arguments.
  - renderDefaultMessage
```
protected String renderDefaultMessage(String defaultMessage,
                                      Object[] args,
                                      Locale locale)
```
    Render the given default message String. The default message is passed in as specified by the caller and can be rendered into a fully formatted default message shown to the user.
    The default implementation passes the String to formatMessage, resolving any argument placeholders found in them. Subclasses may override this method to plug in custom processing of default messages.
    Parameters:
    defaultMessage - the passed-in default message String
    args - array of arguments that will be filled in for params within the message, or null if none.
    locale - the Locale used for formatting
    Returns:
    the rendered default message (with resolved arguments)
    See Also:
    formatMessage(String, Object[], java.util.Locale)
  - formatMessage
```
protected String formatMessage(String msg,
                               Object[] args,
                               Locale locale)
```
    Format the given message String, using cached MessageFormats. By default invoked for passed-in default messages, to resolve any argument placeholders found in them.
    Parameters:
    msg - the message to format
    args - array of arguments that will be filled in for params within the message, or null if none
    locale - the Locale used for formatting
    Returns:
    the formatted message (with resolved arguments)
  - createMessageFormat
```
protected MessageFormat createMessageFormat(String msg,
                                            Locale locale)
```
    Create a MessageFormat for the given message and Locale.
    Parameters:
    msg - the message to create a MessageFormat for
    locale - the Locale to create a MessageFormat for
    Returns:
    the MessageFormat instance
  - resolveArguments
```
protected Object[] resolveArguments(Object[] args,
                                    Locale locale)
```
    Template method for resolving argument objects.
    The default implementation simply returns the given argument array as-is. Can be overridden in subclasses in order to resolve special argument types.
    Parameters:
    args - the original argument array
    locale - the Locale to resolve against
    Returns:
    the resolved argument array

Class MessageSourceSupport

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

logger

Constructor Detail

MessageSourceSupport

Method Detail

setAlwaysUseMessageFormat

isAlwaysUseMessageFormat

renderDefaultMessage

formatMessage

createMessageFormat

resolveArguments