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Could anybody provide Morphia example of aggregation for three tables?

 
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Could anybody provide Morphia example of aggregation for three tables?
 
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What's Morphia?
 
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Campbell Ritchie wrote:What's Morphia?



I started typing "Morphia" in my browser's search box and it didn't answer that question, but as soon as I typed "Morphia agg" it suggested "Morphia aggregation example" as a possible search.

So the short answer to Arthur's question must be "Yes", since apparently a lot of people have searched the web for that exact question.

It turns out that Morphia is related to MongoDB so I'm going to add this thread to that forum.
 
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Thanks, Arthur! It looks to me like baeldung.com is a pretty good source for tutorials.
 
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