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MongoDB中多個嵌入式數據的要通過使用Morphia.I要插入數據這樣插入多個嵌入的MongoDB：插入由嗎啡

{「_id」：的ObjectId（「55f67a57128699b6e5eab719」），「類名」：「com.emecpoc.entity.User」，「smeId」：「SME1」，「creator」：「[email protected]」，「dateOfUsage」：「2015-06-29」，「 UsageDetail「：[{」timeOfUsage「：」11：52：49.0「，」usageType「：」Storage Consumed「，」length「：」81326「}， {」timeOfUsage「：」12：12：55.0「，」 usageType「：」Storage Consumed「，」length「：」115593「}， {」timeOfUsage「：」12：12：55.0「，」usageType「：」Storage Consumed「，」length「：」5383663「}， {「timeOfUsage」：「11:52 ：49.0" ，「usageType」：「寄存消耗」，「長度」：「46310」}] }

豆類是這樣的：

@Entity("User") 
    public class User { 
     @Id 
     ObjectId id; 
     String smeId,creator,dateOfUsage; 
     Timestamp created; 
    @Embedded("UsageDetail") 
     //List<UsageDetail> usageDetail; 
     UsageDetail usageDetail; 
//getter and setter methods 
}

這是嵌入式豆類：

public class UsageDetail { 
     private String timeOfUsage; 
     private String usageType; 
     private String length; 
    //getter and setter methods 
    }

但我得到的結果是這樣的：

{ "_id" : ObjectId("55f67a57128699b6e5eab71c"), "className" : "com.emecpoc.entity.User", "smeId" : "SME1", "creator" : "[email protected]", "dateOfUsage" 
    : "2015-06-29", "UsageDetail" : { "timeOfUsage" : "11:52:49.0", "usageType" : "Storage Consumed", "length" : "46310" } } 

If I remove @Id from User bean then results 4 data entry like this: 
{ "_id" : ObjectId("55f67a57128699b6e5eab719"), "className" : "com.emecpoc.entity.User", "smeId" : "SME1", "creator" : "[email protected]", "dateOfUsage" 
: "2015-06-29", "UsageDetail" : { "timeOfUsage" : "11:52:49.0", "usageType" : "Storage Consumed", "length" : "81326" } } 

{ "_id" : ObjectId("55f67a57128699b6e5eab71a"), "className" : "com.emecpoc.entity.User", "smeId" : "SME1", "creator" : "[email protected]", "dateOfUsage" 
: "2015-06-29", "UsageDetail" : { "timeOfUsage" : "12:12:55.0", "usageType" : "Storage Consumed", "length" : "115593" } } 

{ "_id" : ObjectId("55f67a57128699b6e5eab71b"), "className" : "com.emecpoc.entity.User", "smeId" : "SME1", "creator" : "[email protected]", "dateOfUsage" 
: "2015-06-29", "UsageDetail" : { "timeOfUsage" : "12:12:55.0", "usageType" : "Storage Consumed", "length" : "5383663" } } 

{ "_id" : ObjectId("55f67a57128699b6e5eab71c"), "className" : "com.emecpoc.entity.User", "smeId" : "SME1", "creator" : "[email protected]", "dateOfUsage" 
: "2015-06-29", "UsageDetail" : { "timeOfUsage" : "11:52:49.0", "usageType" : "Storage Consumed", "length" : "46310" } }

所以，請指導我如何將多個數據僅在嵌入式部分。

來源

2015-09-14 Ipsita Tah

再製作usageDetail a List，然後根據需要添加儘可能多的對UsageDetail的引用。通過從User中刪除ID並再次保存，您告訴驅動程序/ Morphia，這是一個全新的對象，需要保存，以便在用戶集合中包含多個文檔。

來源

2015-09-14 11:14:55 evanchooly

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