2012-03-09 62 views
2

我使用Spring LDAP ODM映射了Entry(「實體」)。當我運行單元測試這個類,我在初始化時在控制檯中警告:Spring LDAP ODM - 入門級應聲明爲最終警告

Mar 9, 2012 2:32:40 PM org.springframework.ldap.odm.core.impl.ObjectMetaData <init> 
WARNING: The Entry class Superhero should be declared final 

被映射的類看起來是這樣的:

@Entry(objectClasses = {"batman", "superman", "spiderman", "dontworryaboutthese"}) 
public class Superhero { 
    @Id 
    @JsonIgnore 
    private Name dn; 
    ... 

無法通過谷歌搜索找到任何有關關於這個警告。以下是記錄它的Spring代碼:

public ObjectMetaData(Class<?> clazz) { 
    if (LOG.isDebugEnabled()) { 
     LOG.debug(String.format("Extracting metadata from %1$s", clazz)); 
    } 

    // Get object class metadata - the @Entity annotation 
    Entry entity = (Entry)clazz.getAnnotation(Entry.class); 
    if (entity != null) { 
     // Default objectclass name to the class name unless it's specified 
     // in @Entity(name={objectclass1, objectclass2}); 
     String[] localObjectClasses = entity.objectClasses(); 
     if (localObjectClasses != null && localObjectClasses.length > 0 && localObjectClasses[0].length() > 0) { 
      for (String localObjectClass:localObjectClasses) { 
       objectClasses.add(new CaseIgnoreString(localObjectClass)); 
      } 
     } else { 
      objectClasses.add(new CaseIgnoreString(clazz.getSimpleName())); 
     } 
    } else { 
     throw new MetaDataException(String.format("Class %1$s must have a class level %2$s annotation", clazz, 
       Entry.class)); 
    } 

    // Check the class is final 
    if (!Modifier.isFinal(clazz.getModifiers())) { 
     LOG.warn(String.format("The Entry class %1$s should be declared final", clazz.getSimpleName())); 
    } 
    ... 

任何洞察將不勝感激。我明白將類聲明爲final意味着它不能被擴展,但爲什麼Spring ODM會關心?

回答

0

安全原因?

也許通過繼承你的實體,可以在目錄中存儲其他類型的LDAP條目,導致未預見到的行爲?