HOWTO映射log4mongo文档到Java对象

基本上我log4mongo是记录用户的活动，我想选择一个用户和查看他的日志条目，HOWTO映射log4mongo文档到Java对象

此代码工作确定

BasicDBObject blogEntryDbObj = (BasicDBObject) 
mongo.getDB().getCollection("log").findOne(new BasicDBObject("_id", 
new ObjectId(blogEntryId)));

但在这里即时得到错误“试图映射到一个未映射类：

log = morphia.fromDBObject(log.class, blogEntryDbObj);

应package名字是什么了logç lass或者可能是无关紧要的。我意识到可能我的POJO没有正确设置
但我无法弄清楚什么是错的。

log4mongo文档看起来像这样。

{ 
    "_id" : ObjectId("4eecf4e4f9cb90f308193614"), 
    "timestamp" : new Date("Sat, 17 Dec 2011 21:00:36 GMT +01:00"), 
    "level" : "INFO", 
    "thread" : "Server.Connection:146.53.243.167:4570", 
    "message" : "setting RegistrationId for: zambe", 
    "loggerName" : { 
    "fullyQualifiedClassName" : "zambe.afa8cc37-4796-49c1- 
a175-05a8daf0a88c", 
    "package" : ["zambe", "afa8cc37-4796-49c1-a175-05a8daf0a88c"], 
    "className" : "afa8cc37-4796-49c1-a175-05a8daf0a88c" 
    }, 
    "fileName" : "PushUpdateRegistrationId.java", 
    "method" : "connect", 
    "lineNumber" : "61", 
    "class" : { 
    "fullyQualifiedClassName" : 
"com.carlsberg.server.PushUpdateRegistrationId", 
    "package" : ["com", "carlsberg", "server", 
"PushUpdateRegistrationId"], 
    "className" : "PushUpdateRegistrationId" 
    }, 
    "host" : { 
    "process" : "[email protected]", 
    "name" : "ERIKSWEDMINI", 
    "ip" : "192.168.1.150" 
    } 
}

这里是我的POJO我尝试映射到

@Entity(value = "log") 
public class log 
{ 
    @Id private ObjectId id; 
    Date timestamp; 
    Level level; 
    String thread; 
    String message; 

    @Embedded 
    LoggerName loggerName; 

    String fileName; 
    String method; 
    String lineNumber; 

    @Embedded("class") 
    LoggerClass loggerClass; 

    @Embedded 
    MyHost host; 
} 

@Entity(noClassnameStored=true) 
@Embedded 
class LoggerName 
{ 
    String fullyQualifiedClassName; 
    @Property("package") 
    String[] _package; 
    String className; 

} 

@Entity(noClassnameStored=true) 
@Embedded 
class LoggerClass 
{ 
    String fullyQualifiedClassName; 
    @Property("package") 
    String[] _package; 
    String className; 

} 

@Entity(noClassnameStored=true) 
@Embedded 
class MyHost 
{ 
    String process; 
    String name; 
    String ip; 
}

来源

2012-01-17 Erik

你是否先映射了你的日志类？ http://code.google.com/p/morphia/wiki/MappingObjects – Nat

@Nat不，我没有，我把它映射到错误的地方。现在它正在工作。发布答案，我会接受它。 “mapping是实例方法，你需要将它映射到Morphia的同一个实例上，以便从DBObject中获得工作。” – Erik

morphia.map是实例方法。你需要morphia.map它在Morphia的同一个实例上得到morphia.fromDBObject才能工作

来源

2012-01-18 08:31:10 Nat

HOWTO映射log4mongo文档到Java对象

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