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https://issues.apache.org/jira/browse/CAMEL-10504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16014127#comment-16014127
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Damien B commented on CAMEL-10504:
----------------------------------
Working on it. We can see the same behavior in the current tests:
{code}
2017-05-17 16:31:21,310 [main ] WARN MongoDbBasicConverters
- Conversion has fallen back to generic Object -> DBObject, but unable to
convert type java.util.ArrayList. Returning null.
java.lang.IllegalArgumentException: Can not deserialize instance of
java.util.LinkedHashMap out of START_ARRAY token
at [Source: N/A; line: -1, column: -1]
2017-05-17 16:34:13,380 [main ] WARN MongoDbBasicConverters
- Conversion has fallen back to generic Object -> DBObject, but unable to
convert type org.apache.camel.impl.DefaultMessage. Returning null.
java.lang.IllegalArgumentException: (was java.lang.NullPointerException)
(through reference chain:
org.apache.camel.impl.DefaultMessage["exchange"]->org.apache.camel.impl.DefaultExchange["context"]->org.apache.camel.spring.SpringCamelContext["managementNameStrategy"]->org.apache.camel.impl.DefaultManagementNameStrategy["name"])
{code}
Is there a way with the current structure of testing to check if those logs
happen (I don't really want to parse camel-mongodb-test.log)?
> Hiding an underlying exception if MongoDbBasicConverters fails to convert to
> DBObject
> -------------------------------------------------------------------------------------
>
> Key: CAMEL-10504
> URL: https://issues.apache.org/jira/browse/CAMEL-10504
> Project: Camel
> Issue Type: Bug
> Components: camel-mongodb
> Affects Versions: 2.17.3, 2.18.0
> Reporter: Evgenii Lomonosov
> Assignee: Andrea Cosentino
> Priority: Minor
> Fix For: 2.18.1, 2.19.0
>
>
> If conversion fails it could be hard to understand what is a problem because
> it returns just a message "Conversion has fallen back to generic Object ->
> DBObject, but unable to convert type {}. Returning null" that points to a
> class that was not converted.
> In case of, as example, if a list of objects that should be converted leads
> to a memory error because of parent-child link are cycled for 2 objects, it
> would take a lot of efforts to understand what is going on. And information
> about underlying exception, stackoverflow in this case, could help to find
> the root cause much faster than now.
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