M9Hhhmt0

1## XLanguageSystem.java
2import java.util.HashMap;
3import java.util.LinkedList;
4
5public class XLanguageSystem {
6  private HashMap<String, HashMap<String, String>> cache = new HashMap<String, HashMap<String, String>>();
7
8  public XLanguageSystem() {
9    // read available languages from database here...
10  }
11
12
13  public String getEntry(String lang, String trans_id) {
14    if(this.languageExists(lang)) { // language exists...
15      if(this.cacheElementExists(lang, trans_id)) { // element exists in language-cache...
16        // get element and remove it temporarly from the cache...
17        String trans = this.cache.get(lang).remove(trans_id);
18        
19        this.cache.get(lang).put(trans_id, trans); // add element back to the cache {element needs to be removed and readded to implement LFU}
20
21        return trans;
22      }
23      else { // element does not exist in language-cache...
24        // - try to get it from the lang-table from the database...
25        // - add it to lang-cache...
26
27        // if that failes...
28        return this.getDefaultTranslation(trans_id);
29      }
30    }
31    else // language does not exist...
32      return this.getDefaultTranslation(trans_id);
33  }
34
35  public void addLanguage(String lang) {
36    this.cache.put(lang, new HashMap<String, String>()); // create cache-HashMap for the language
37
38    // add new language to the db here...
39    
40    /*
41    
42    "CREATE TABLE `lang" + lang + ` (
43      `id` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
44      `trans_id` VARCHAR(200) NOT NULL KEY,
45      `trans` LONGTEXT NOT NULL KEY,
46      `userid` INT(11) NOT NULL KEY,
47      `active` TINYINT(1) DEFAULT '0'
48    ) ENGINE=MyISAM;
49
50    */
51  }
52
53  public LinkedList<String> getAvailableLanguages() {
54    return new LinkedList<String>(this.cache.keySet());
55  }
56
57  public void removeCacheElemen(String lang, String trans_id) {
58    // if langueage exists and key exists in this language-cache... remove it...
59    if(this.languageExists(lang) && this.cacheElementExists(lang, trans_id))
60      this.cache.get(lang).remove(trans_id);
61  }
62
63
64  private String getDefaultTranslation(String trans_id) {
65    // get default translation for trans_id {default = english}...
66
67    return "";
68  }
69
70  private boolean languageExists(String lang) {
71    return this.cache.containsKey(lang);
72  }
73
74  private boolean cacheElementExists(String lang, String trans_id) {
75    return this.cache.get(lang).containsKey(trans_id);
76  }
77}