Package io.micronaut.data.model.query

Interface ProjectionList

  • public interface ProjectionList
    Models a list of projections.
    Since:
    1.0
    Author:
    Graeme Rocher

    • Method Detail

      • id

        ProjectionList id()
        A Projection that obtains the id of an object.
        Returns:
        The projection list

      • count

        ProjectionList count()
        Count the number of records returned.
        Returns:
        The projection list

      • countDistinct

        ProjectionList countDistinct​(java.lang.String property)
        Count the number of records returned.
        Parameters:
        property - The property name to count
        Returns:
        The projection list

      • groupProperty

        ProjectionList groupProperty​(java.lang.String property)
        Defines a group by projection for datastores that support it.
        Parameters:
        property - The property name
        Returns:
        The projection list

      • distinct

        ProjectionList distinct()
        Projection to return only distinct records.
        Returns:
        The projection list

      • distinct

        ProjectionList distinct​(java.lang.String property)
        Projection to return only distinct properties.
        Parameters:
        property - The property name to use
        Returns:
        The projection list

      • rowCount

        ProjectionList rowCount()
        Count the number of records returned.
        Returns:
        The projection list

      • property

        ProjectionList property​(java.lang.String name)
        A projection that obtains the value of a property of an entity.
        Parameters:
        name - The name of the property
        Returns:
        The PropertyProjection instance

      • sum

        ProjectionList sum​(java.lang.String name)
        Computes the sum of a property.
        Parameters:
        name - The name of the property
        Returns:
        The PropertyProjection instance

      • min

        ProjectionList min​(java.lang.String name)
        Computes the min value of a property.
        Parameters:
        name - The name of the property
        Returns:
        The PropertyProjection instance

      • max

        ProjectionList max​(java.lang.String name)
        Computes the pageSize value of a property.
        Parameters:
        name - The name of the property
        Returns:
        The PropertyProjection instance

      • avg

        ProjectionList avg​(java.lang.String name)
        Computes the average value of a property.
        Parameters:
        name - The name of the property
        Returns:
        The PropertyProjection instance

      • add

        ProjectionList add​(@NonNull
                   QueryModel.Projection projection)
        Adds a projection to the projection list.
        Parameters:
        projection - The projection to add
        Returns:
        This list