classafMorphia::Query

sys::Obj
  afMorphia::Query

A means to build Mongo queries with sane objects and methods. (And not some incomprehensible mess of nested maps and lists!)

Pass Query objects to a QueryExecutor to run them.

and

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Query and(Query[] criteria)

Selects documents that pass all the query expressions in the given list. Example:

Query().and([
  Query().field("quantity").lessThan(20),
  Query().field("price").eq(10)
])

Note the above could also be written implicitly with:

Query().field("quantity").lessThan(20).field("price").eq(10)

field

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QueryCriterion field(Obj name)

Creates a match for the given field name. It may reference nested objects using dot notation. Example, user.name

name may either an entity Field annotated with @Property or a MongoDB property name (Str).

nor

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Query nor(Query[] criteria)

Selects documents that fail all the query expressions in the given list. Example:

Query().nor([
  Query().field("quantity").lessThan(20),
  Query().field("price").eq(10)
])

or

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Query or(Query[] criteria)

Selects documents that pass any of the query expressions in the given list. Example:

Query().or([
  Query().field("quantity").lessThan(20),
  Query().field("price").eq(10)
])

toMongo

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Str:Obj toMongo(Datastore datastore)

Returns a Mongo document representing the query. May be used by Datastore and Collection methods such as findAndUpdate(...).

where

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Query where(Code where)

Selects documents based on the return value of a javascript function. Example:

Query().where(Code("this.name == 'Judge Dredd'"))

As only 1 where function is allowed per query, only the last where function is used.