See: Description
Interface | Description |
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Message |
Message Interface for a lazy loading.
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NLSException |
Interface that exceptions should implement to support lazy loading of messages.
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Class | Description |
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MessageImpl |
Default implementation of Message interface.
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NLS |
MessageBundles classes extend this class, to implement a bundle.
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This utility API, adds support for NLS messages in the apache code. It is currently used by the lucene "New Flexible Query PArser".
Features:
Lazy loading of Message Strings
public class MessagesTestBundle extends NLS { private static final String BUNDLE_NAME = MessagesTestBundle.class.getName(); private MessagesTestBundle() { // should never be instantiated } static { // register all string ids with NLS class and initialize static string // values NLS.initializeMessages(BUNDLE_NAME, MessagesTestBundle.class); } // static string must match the strings in the property files. public static String Q0001E_INVALID_SYNTAX; public static String Q0004E_INVALID_SYNTAX_ESCAPE_UNICODE_TRUNCATION; // this message is missing from the properties file public static String Q0005E_MESSAGE_NOT_IN_BUNDLE; } // Create a message reference Message invalidSyntax = new MessageImpl(MessagesTestBundle.Q0001E_INVALID_SYNTAX, "XXX"); // Do other stuff in the code... // when is time to display the message to the user or log the message on a file // the message is loaded from the correct bundle String message1 = invalidSyntax.getLocalizedMessage(); String message2 = invalidSyntax.getLocalizedMessage(Locale.JAPANESE);
Normal loading of Message Strings
String message1 = NLS.getLocalizedMessage(MessagesTestBundle.Q0004E_INVALID_SYNTAX_ESCAPE_UNICODE_TRUNCATION); String message2 = NLS.getLocalizedMessage(MessagesTestBundle.Q0004E_INVALID_SYNTAX_ESCAPE_UNICODE_TRUNCATION, Locale.JAPANESE);
The org.apache.lucene.messages.TestNLS junit contains several other examples. The TestNLS java code is available from the Apache Lucene code repository.
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