I have the following class which is persisted into a mongodb using morphia in a play! application. The class resides in a module which is a dependency of another play! application.
Its configuration is read from a file and persisted into the db on initial load (if its not already in the db) and then subsequent requests use the db version.
@Entity
public class Page extends Model {
@Id
public Long navigationId;
// etc ...
}
The initial load and subsequent query access works ok and i can see the page in mongo:
> db.Page.find({_id:20000})
{ "_id" : NumberLong(20000), "className" : "models.Page" etc }
However if i restart play! or make a code change that results in Morphia being reinitialised
(MorphiaPlugin-1.2.4> initialized
appears in the logs) i get the following stack trace:
Caused by: java.lang.RuntimeException: java.lang.RuntimeException: com.google.code.morphia.mapping.MappingException: Error setting value from converter (LongConverter) for models.Page.navigationId to 20000
at com.google.code.morphia.mapping.Mapper.fromDb(Mapper.java:487)
at com.google.code.morphia.mapping.Mapper.fromDBObject(Mapper.java:267)
at com.google.code.morphia.query.MorphiaIterator.convertItem(MorphiaIterator.java:66)
at com.google.code.morphia.query.MorphiaIterator.processItem(MorphiaIterator.java:53)
at com.google.code.morphia.query.MorphiaIterator.next(MorphiaIterator.java:48)
at com.google.code.morphia.query.QueryImpl.asList(QueryImpl.java:255)
at play.modules.morphia.Model$MorphiaQuery.asList(Model.java:1067)
at models.Page.findAll(Page.java)
at plugins.PageConfigLoadPlugin.loadPersistedPages(PageConfigLoadPlugin.java:62)
at plugins.PageConfigLoadPlugin.onApplicationStart(PageConfigLoadPlugin.java:51)
at play.plugins.PluginCollection.onApplicationStart(PluginCollection.java:425)
at play.Play.start(Play.java:495)
... 3 more
Caused by: java.lang.RuntimeException: com.google.code.morphia.mapping.MappingException: Error setting value from converter (LongConverter) for models.Page.navigationId to 20000
at com.google.code.morphia.mapping.ValueMapper.fromDBObject(ValueMapper.java:27)
at com.google.code.morphia.mapping.Mapper.readMappedField(Mapper.java:501)
at com.google.code.morphia.mapping.Mapper.fromDb(Mapper.java:484)
... 14 more
Caused by: com.google.code.morphia.mapping.MappingException: Error setting value from converter (LongConverter) for models.Page.navigationId to 20000
at com.google.code.morphia.converters.DefaultConverters.fromDBObject(DefaultConverters.java:133)
at com.google.code.morphia.mapping.ValueMapper.fromDBObject(ValueMapper.java:25)
... 16 more
If i drop the Collection from mongodb using the command line i can again load and query the Page obejct successfully from my play! web application
> db.Page.drop()
true
As I mentioned, this class is in a module. This problem only happens in one application that the module is a dependency of. The other demo application works fine.
any suggestions?