Hi Andy,

thanks for info and the link, this is really helpful.

One question about running JDOQL queries on of MongoDB: is there any chance to figure out whether a specific JDOQL query is pushed to MongoDB or evaluated in memory? Do I find any info about this is the DataNucleus log files (having the right log level)?

Regards Michael


Michael reports that he's using DataNucleus with MongoDB and it's
sweet that everything, including JDOQL seems to work fine!
Good to hear. Obviously the MongoDB support lacks some features (some of which
are due to the lack of capability in the datastore), and most JDOQL will be
evaluated in-memory (due to lack of in-datastore capability for many
operators/methods - simple things like arithmetic operators are in datastore),
but aimed to make it as seamless as possible.

See this for unsupported features with other datastores
http://www.datanucleus.org/products/accessplatform/datastore_features.html

Would be nice to one day run the TCK on them all and get pretty complete
coverage ;-)



--
*Michael Bouschen*
*Prokurist*

akquinet tech@spree GmbH
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Email: michael.bousc...@akquinet.de
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