org.springframework.context.support

## Class StaticMessageSource

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

- All Implemented Interfaces:
    HierarchicalMessageSource, MessageSource

      public class StaticMessageSource
      extends AbstractMessageSource

  Simple implementation of `MessageSource` which allows messages to be registered programmatically. This MessageSource supports basic internationalization.

  Intended for testing rather than for use in production systems.

  Author:
    Rod Johnson, Juergen Hoeller

- - ### Field Summary

    - ### Fields inherited from class org.springframework.context.support.MessageSourceSupport

      `logger`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `StaticMessageSource()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addMessage(String code, Locale locale, String msg)` Associate the given message with the given code.
    `void` | `addMessages(Map<String,String> messages, Locale locale)` Associate the given message values with the given keys as codes.
    `protected MessageFormat` | `resolveCode(String code, Locale locale)` Subclasses must implement this method to resolve a message.
    `protected String` | `resolveCodeWithoutArguments(String code, Locale locale)` Subclasses can override this method to resolve a message without arguments in an optimized fashion, i.e.
    `String` | `toString()`

    - ### Methods inherited from class org.springframework.context.support.AbstractMessageSource

      `getCommonMessages, getDefaultMessage, getMessage, getMessage, getMessage, getMessageFromParent, getMessageInternal, getParentMessageSource, isUseCodeAsDefaultMessage, resolveArguments, setCommonMessages, setParentMessageSource, setUseCodeAsDefaultMessage`

    - ### Methods inherited from class org.springframework.context.support.MessageSourceSupport

      `createMessageFormat, formatMessage, isAlwaysUseMessageFormat, renderDefaultMessage, setAlwaysUseMessageFormat`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### StaticMessageSource

          public StaticMessageSource()

  - ### Method Detail

    - #### resolveCodeWithoutArguments

          protected String resolveCodeWithoutArguments(String code,
                                                       Locale locale)

      Description copied from class: `AbstractMessageSource`
      Subclasses can override this method to resolve a message without arguments in an optimized fashion, i.e. to resolve without involving a MessageFormat.

      The default implementation does use MessageFormat, through delegating to the `AbstractMessageSource.resolveCode(java.lang.String, java.util.Locale)` method. Subclasses are encouraged to replace this with optimized resolution.

      Unfortunately, `java.text.MessageFormat` is not implemented in an efficient fashion. In particular, it does not detect that a message pattern doesn't contain argument placeholders in the first place. Therefore, it is advisable to circumvent MessageFormat for messages without arguments.

      Overrides:
        `resolveCodeWithoutArguments` in class `AbstractMessageSource`
      Parameters:
        `code` - the code of the message to resolve
        `locale` - the Locale to resolve the code for (subclasses are encouraged to support internationalization)
      Returns:
        the message String, or `null` if not found
      See Also:
        `AbstractMessageSource.resolveCode(java.lang.String, java.util.Locale)`, `MessageFormat`

    - #### resolveCode

          protected MessageFormat resolveCode(String code,
                                              Locale locale)

      Description copied from class: `AbstractMessageSource`
      Subclasses must implement this method to resolve a message.

      Returns a MessageFormat instance rather than a message String, to allow for appropriate caching of MessageFormats in subclasses.

      Subclasses are encouraged to provide optimized resolution for messages without arguments, not involving MessageFormat. See the `AbstractMessageSource.resolveCodeWithoutArguments(java.lang.String, java.util.Locale)` javadoc for details.

      Specified by:
        `resolveCode` in class `AbstractMessageSource`
      Parameters:
        `code` - the code of the message to resolve
        `locale` - the Locale to resolve the code for (subclasses are encouraged to support internationalization)
      Returns:
        the MessageFormat for the message, or `null` if not found
      See Also:
        `AbstractMessageSource.resolveCodeWithoutArguments(String, java.util.Locale)`

    - #### addMessage

          public void addMessage(String code,
                                 Locale locale,
                                 String msg)

      Associate the given message with the given code.
      Parameters:
        `code` - the lookup code
        `locale` - the locale that the message should be found within
        `msg` - the message associated with this lookup code

    - #### addMessages

          public void addMessages(Map<String,String> messages,
                                  Locale locale)

      Associate the given message values with the given keys as codes.
      Parameters:
        `messages` - the messages to register, with messages codes as keys and message texts as values
        `locale` - the locale that the messages should be found within

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`