Unable to save Map<String, ?> when one of it's keys starts with dollar sign [DATAMONGO-604]

[spring-projects-issues]

Siarhei Krukau opened DATAMONGO-604 and commented

MongoDB cannot store JSON keys, starting from "$". So, when we try to save a Map with a $-starting key, mongo fails with:

fields stored in the db can't start with '$' (Bad Key: '$key')

My current workaround is to extend org.springframework.data.mongodb.core.convert.MappingMongoConverter and override potentiallyEscapeMapKey(String). Maybe this is good to be in master?

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Affects: 1.1 GA

Reference URL: https://groups.google.com/forum/?fromgroups#!topic/mongodb-user/5UQYAQ6o5Wg

Attachments:

• demo.zip (3.78 kB)

3 votes, 4 watchers

[spring-projects-issues]

Ignacio Inigo commented

same with dots

[christophstrobl]

The current hooks (potentiallyConvertMapKey & potentiallyUnescapeMapKey) in place seem to be sufficient.