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 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
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For Native Language Support (NLS), system of software internationalization.
NLS message API

This utility API, adds support for NLS messages in the apache code.
It is currently used by the lucene "New Flexible Query PArser".

Features:
    

        
Message reference in the code, using static Strings
        
Message resource validation at class load time, for easier debugging
        
Allows for message IDs to be re-factored using eclipse or other code re-factor tools
        
Allows for reference count on messages, just like code
    
Lazy loading of Message Strings
        
        
Normal loading Message Strings
                  
    





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.
/** 
 * For Native Language Support (NLS), system of software internationalization.
 * 
 * <h2>NLS message API</h2>
 * <p>
 * This utility API, adds support for NLS messages in the apache code.
 * It is currently used by the lucene "New Flexible Query PArser".
 * <p>
 * Features:
 *     <ol>
 *         <li>Message reference in the code, using static Strings</li>
 *         <li>Message resource validation at class load time, for easier debugging</li>
 *         <li>Allows for message IDs to be re-factored using eclipse or other code re-factor tools</li>
 *         <li>Allows for reference count on messages, just like code</li>
 *     <li>Lazy loading of Message Strings</li>        
 *         <li>Normal loading Message Strings</li>                  
 *     </ol>
 * 
 * <br>
 * <br>
 * <p>
 * Lazy loading of Message Strings
 * 
 * <pre class="prettyprint">
 *   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);
 * </pre>
 * 
 * <br>
 * <br>
 * <p>
 * Normal loading of Message Strings
 * 
 * <pre class="prettyprint">
 *   String message1 = NLS.getLocalizedMessage(MessagesTestBundle.Q0004E_INVALID_SYNTAX_ESCAPE_UNICODE_TRUNCATION);
 *   String message2 = NLS.getLocalizedMessage(MessagesTestBundle.Q0004E_INVALID_SYNTAX_ESCAPE_UNICODE_TRUNCATION, Locale.JAPANESE);
 * </pre>
 * 
 * <p>
 * The org.apache.lucene.messages.TestNLS junit contains several other examples.
 * The TestNLS java code is available from the Apache Lucene code repository.
 */
package org.apache.lucene.queryparser.flexible.messages;