Object

org.mongodb.scala.model

Projections

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object Projections

A factory for projections. A convenient way to use this class is to statically import all of its methods, which allows usage like:

collection.find().projection(fields(include("x", "y"), excludeId()))

Since

1.0

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  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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  6. def computed[TExpression](fieldName: String, expression: TExpression): Bson

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    Creates a projection of a field whose value is computed from the given expression.

    Creates a projection of a field whose value is computed from the given expression. Projection with an expression is only supported using the $project aggregation pipeline stage.

    TExpression

    the expression type

    fieldName

    the field name

    expression

    the expression

    returns

    the projection

    See also

    Aggregates#project(Bson)

  7. def elemMatch(fieldName: String, filter: Bson): Bson

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    Creates a projection that includes for the given field only the first element of the array value of that field that matches the given query filter.

    Creates a projection that includes for the given field only the first element of the array value of that field that matches the given query filter.

    fieldName

    the field name

    filter

    the filter to apply

    returns

    the projection

    See also

    elemMatch

  8. def elemMatch(fieldName: String): Bson

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    Creates a projection that includes for the given field only the first element of an array that matches the query filter.

    Creates a projection that includes for the given field only the first element of an array that matches the query filter. This is referred to as the positional $ operator.

    fieldName

    the field name whose value is the array

    returns

    the projection

    See also

    Project the first matching element ($ operator)

  9. final def eq(arg0: AnyRef): Boolean

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  10. def equals(arg0: Any): Boolean

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  11. def exclude(fieldNames: String*): Bson

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    Creates a projection that excludes all of the given fields.

    Creates a projection that excludes all of the given fields.

    fieldNames

    the field names

    returns

    the projection

  12. def excludeId(): Bson

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    Creates a projection that excludes the _id field.

    Creates a projection that excludes the _id field. This suppresses the automatic inclusion of _id that is the default, even when other fields are explicitly included.

    returns

    the projection

  13. def fields(projections: Bson*): Bson

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    Creates a projection that combines the list of projections into a single one.

    Creates a projection that combines the list of projections into a single one. If there are duplicate keys, the last one takes precedence.

    projections

    the list of projections to combine

    returns

    the combined projection

  14. def finalize(): Unit

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  15. final def getClass(): Class[_]

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  16. def hashCode(): Int

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  17. def include(fieldNames: String*): Bson

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    Creates a projection that includes all of the given fields.

    Creates a projection that includes all of the given fields.

    fieldNames

    the field names

    returns

    the projection

  18. final def isInstanceOf[T0]: Boolean

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  19. def metaTextScore(fieldName: String): Bson

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    Creates a projection to the given field name of the textScore, for use with text queries.

    Creates a projection to the given field name of the textScore, for use with text queries.

    fieldName

    the field name

    returns

    the projection

    See also

    textScore

  20. final def ne(arg0: AnyRef): Boolean

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  21. final def notify(): Unit

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  22. final def notifyAll(): Unit

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  23. def slice(fieldName: String, skip: Int, limit: Int): Bson

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    Creates a projection to the given field name of a slice of the array value of that field.

    Creates a projection to the given field name of a slice of the array value of that field.

    fieldName

    the field name

    skip

    the number of elements to skip before applying the limit

    limit

    the number of elements to project

    returns

    the projection

    See also

    Slice

  24. def slice(fieldName: String, limit: Int): Bson

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    Creates a projection to the given field name of a slice of the array value of that field.

    Creates a projection to the given field name of a slice of the array value of that field.

    fieldName

    the field name

    limit

    the number of elements to project.

    returns

    the projection

    See also

    Slice

  25. final def synchronized[T0](arg0: ⇒ T0): T0

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  26. def toString(): String

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  27. final def wait(): Unit

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  28. final def wait(arg0: Long, arg1: Int): Unit

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  29. final def wait(arg0: Long): Unit

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