Problem when inserting object with hashmap which keys contain a dot

Re-opens #268

I encountered this issue as well and reproduced it :

static class MyObjectWithMap {
        Map<String, String> map = Maps.newHashMap();
}

MyObjectWithMap obj = new MyObjectWithMap();
obj.map.put("keyOk", "OK");
getDs().save(obj); // No problem
obj.map.put("key.notOK", "notOK");
getDs().save(obj); // Problem

Generates this :

java.lang.IllegalArgumentException: Invalid BSON field name key.notOK
     at org.bson.AbstractBsonWriter.writeName(AbstractBsonWriter.java:494)
     at com.mongodb.DBObjectCodec.encodeMap(DBObjectCodec.java:219)
     at com.mongodb.DBObjectCodec.writeValue(DBObjectCodec.java:198)
     at com.mongodb.DBObjectCodec.encode(DBObjectCodec.java:128)
     at com.mongodb.DBObjectCodec.encode(DBObjectCodec.java:61)
     at com.mongodb.CompoundDBObjectCodec.encode(CompoundDBObjectCodec.java:48)
     at com.mongodb.CompoundDBObjectCodec.encode(CompoundDBObjectCodec.java:27)
     at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:63)
     at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:29)

[plaa]

Is there any generic workaround? We’re storing a document with generic JSON content (i.e. we do not control the key names). I’m thinking of having some pre/postprocessor that replaces invalid keys with an encoded version and replaces them upon reading. Maybe defining a special JsonMap class which would know to do the proper processing.

[evanchooly]

Not directly because embedded objects don’t have a lifecycle separate from the enclosing type. If you’d like help with the listeners, please post your questions to the mailing list https://groups.google.com/forum/#!forum/morphia.

--------------------------------

{ *name : *“Justin Lee”, * title : *“Software Engineer”, twitter : "@evanchooly http://twitter.com/evanchooly_"_, web : [ “mongodb.com http://www.mongodb.com”, “antwerkz.com” ], location : “New York, NY” }

On Wed, Jan 20, 2016 at 2:25 PM, plaa [e-mail] wrote:

Can any of the lifecycle methods (either annotations of EntityListeners) be used on embedded objects? I’d like to create JsonMap class, which functions as a map within an entity, but performs the transformation on the map automatically. Can I override that an embedded JsonMap object is serialized using a specific listener?

— Reply to this email directly or view it on GitHub https://github.com/mongodb/morphia/issues/827#issuecomment-173332352.