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Questions - morphia

Morphia throws error when the field was changed its type from String to enum: No enum constant

In DAO class I use with Morphia I have replaced the String filed type to enums.Currency and I expect that everything will work fine, when the data is retrieved from the db: was public String curre...
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Eljah

java

mongodb

enums

mongodb-java

morphia

Votes: 0

Answers: 1

Latest Answer

This error is raised when there are String values in the Mongodb not existing in the enum. Here I have realized there are db entries with empty string fields: After replacing the empty string values ...
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Eljah

Is there a way to get a collection in a random order?

Is it possible to get the full collection of documents in a random order? Or just a random sample?
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Frederic Dhalleine

morphia

Votes: 0

Answers: 1

Latest Answer

You can use the aggregation framework's $sample. The Morphia API to access that is here.
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evanchooly

MongoDB Morphia distinct

public Collection<OwnerDetail> getAllOwners() { final MorphiaCursor<Listing> listings = datastore.find(Listing.class) .iterator(new FindOptions() .proje...
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Ishani Samaraweera

java

mongodb

morphia

Votes: 0

Answers: 0

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