mongodb MongoException：带有名称的索引：代码已经存在，具有不同的选项
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MongoException: Index with name: code already exists with different options
提问by faizi
I have a mongodbcollection termwith following structure
我有一个具有以下结构的mongodb集合term
{
"_id" : "00002c34-a4ca-42ee-b242-e9bab8e3a01f",
"terminologyClass" : "USER",
"code" : "X67",
"terminology" : "some term related notes",
"notes" : "some notes"
}
and a java class representing the term collection as Term.java
和一个表示术语集合的java类 Term.java
@Document
public class Term{
@Id
protected String termId;
@Indexed
protected String terminologyClass;
@Indexed(unique=true)
protected String code;
@Indexed
protected String terminology;
protected String notes;
//getters & setters
}
I have many documents in termcollection. Now I am added a new field to Term.javaas
我term收集了很多文件。现在我添加了一个新字段Term.java作为
@Indexed
protected String status;
After adding field statusto Term.java, while inserting a new term to termcollection I am getting an the exceptoin :
将字段添加status到 后Term.java，在向term集合中插入新术语时，我得到了一个异常：
com.mongodb.MongoException: Index with name: code already exists with different options
com.mongodb.MongoException：带有名称的索引：代码已经存在，具有不同的选项
I am using MongoDB version : 2.6.5 and spring-data-mongodb version : 1.3.2
我正在使用 MongoDB 版本：2.6.5 和 spring-data-mongodb 版本：1.3.2
回答by Ori Dar
You already have an index on that collection with the same name, but with a different definition. My guess is that your current code index is non-unique
您已经在该集合上有一个具有相同名称但具有不同定义的索引。我的猜测是您当前的代码索引是非唯一的
try:
db.Term.getIndexes()
尝试：
db.Term.getIndexes()
If this is indeed the case (you have a non-unique index over code field), issue:
db.Term.dropIndex("code_1")(replace with the code field index name).
如果确实如此（您在代码字段上有一个非唯一索引），请发出：（
db.Term.dropIndex("code_1")替换为代码字段索引名称）。
Next time you boot your application, it's supposed to work alright.
下次启动应用程序时，它应该可以正常工作。
Alternatively, remove the unique attribute from the @Indexedannotation (if you don't except it to be unique).
或者，从@Indexed注释中删除唯一属性（如果您不希望它是唯一的）。
回答by mherBaghinyan
have you tried to drop your collection and try again? usually there are many conflicts while applying new java mapping to existing mongodb collection
你有没有试过放弃你的收藏然后再试一次？通常在将新的 java 映射应用于现有的 mongodb 集合时会有很多冲突
