Java 8 and LocalDate

[Lynch maniac]

Hi,

I am using morphia on a project with Java 8. It work's well for serialisation Object ==> DBObject to put data in my MongoDB database.

But when i get my recent data created DBObject ==> Object (with the same created by moprhia) i have a org.mongodb.morphia.mapping.MappingException: Could not map entity from DBObject.

In my object i have a field type of LocalDate (new API in Java 8). And morphia seems not happy with this :

Caused by: org.mongodb.morphia.mapping.MappingException: No usable constructor for java.time.LocalDate

at org.mongodb.morphia.mapping.DefaultCreator.getNoArgsConstructor(DefaultCreator.java:159)

at org.mongodb.morphia.mapping.DefaultCreator.createInst(DefaultCreator.java:127)

at org.mongodb.morphia.mapping.DefaultCreator.createInstance(DefaultCreator.java:30)

at org.mongodb.morphia.mapping.DefaultCreator.createInstance(DefaultCreator.java:41)

at org.mongodb.morphia.mapping.DefaultCreator.createInstance(DefaultCreator.java:54)

at org.mongodb.morphia.mapping.EmbeddedMapper.fromDBObject(EmbeddedMapper.java:161)

... 63 more

Caused by: java.lang.NoSuchMethodException: java.time.LocalDate.<init>()

at java.lang.Class.getConstructor0(Class.java:2971)

at java.lang.Class.getDeclaredConstructor(Class.java:2165)

at org.mongodb.morphia.mapping.DefaultCreator.getNoArgsConstructor(DefaultCreator.java:155)

... 68 more

Hva you got an idea to resolve this error ?

Thanks a lot

Vincent

[Lynch maniac]

I am using 0.108 version of morphia.

[Martin Bachmann]

Hi Lynch,

Same problem here. Did you find a solution to deserialize Java 8 LocalDate, Instant etc using Morphia? 

Cheers - Martin