Represent a DynamoDB's query where a partition key value is required, sortKeyQuery and filter are optional.

Examples:

// query for an item where partition key == "some-partition-key", sort key == "some-sort-key" but only
// return a value if the filter's condition is med ("my_bool_attribute_name" == true)
val query: Query[String, String] =
  Query(
    "some-partition-key",
    SortKeyQuery.EqualTo("some-sort-key"),
    Expression(
      "#b = :my_bool",
      Map("#b" -> "my_bool_attribute_name"),
      Map(
        ":my_bool" -> true.asAttributeValue
      )
    )
  )

// query for an item where partition key == "some-partition-key", the table doesn't have sort key, only
// return a value if the filter's condition is med ("my_bool_attribute_name" == true)
val query: Query[String, Nothing] =
  Query(
    "some-partition-key",
    Expression(
      "#b = :my_bool",
      Map("#b" -> "my_bool_attribute_name"),
      Map(
        ":my_bool" -> true.asAttributeValue
      )
    )
  )