Module Values.SelectResultSource

The Select operation returns a set of attributes for ItemNames that match the select expression. Select is similar to the standard SQL SELECT statement. The total size of the response cannot exceed 1 MB in total size. Amazon SimpleDB automatically adjusts the number of items returned per page to enforce this limit. For example, if the client asks to retrieve 2500 items, but each individual item is 10 kB in size, the system returns 100 items and an appropriate NextToken so the client can access the next page of results. For information on how to construct select expressions, see Using Select to Create Amazon SimpleDB Queries in the Developer Guide.

Sourcetype selectResult = {
  1. items : ItemList.t option;
    (*

    A list of items that match the select expression.

    *)
  2. nextToken : String_.t option;
    (*

    An opaque token indicating that more items than MaxNumberOfItems were matched, the response size exceeded 1 megabyte, or the execution time exceeded 5 seconds.

    *)
}
Sourceand responseMetaData = unit
Sourceand t = {
  1. selectResult : selectResult;
  2. responseMetaData : responseMetaData;
}
Sourcetype error = [
  1. | `InvalidNextToken of InvalidNextToken.t
  2. | `InvalidNumberPredicates of InvalidNumberPredicates.t
  3. | `InvalidNumberValueTests of InvalidNumberValueTests.t
  4. | `InvalidParameterValue of InvalidParameterValue.t
  5. | `InvalidQueryExpression of InvalidQueryExpression.t
  6. | `MissingParameter of MissingParameter.t
  7. | `NoSuchDomain of NoSuchDomain.t
  8. | `RequestTimeout of RequestTimeout.t
  9. | `TooManyRequestedAttributes of TooManyRequestedAttributes.t
  10. | `Unknown_operation_error of string * string option
]
Sourceval context_ : string
Sourceval make : ?items:??? -> ?nextToken:??? -> unit -> t
Sourceval error_of_json : string -> Yojson.Safe.t -> [> `InvalidNextToken of InvalidNextToken.t | `InvalidNumberPredicates of InvalidNumberPredicates.t | `InvalidNumberValueTests of InvalidNumberValueTests.t | `InvalidParameterValue of InvalidParameterValue.t | `InvalidQueryExpression of InvalidQueryExpression.t | `MissingParameter of MissingParameter.t | `NoSuchDomain of NoSuchDomain.t | `RequestTimeout of RequestTimeout.t | `TooManyRequestedAttributes of TooManyRequestedAttributes.t | `Unknown_operation_error of string * string option ]
Sourceval error_of_xml : string -> Awso.Xml.t -> [> `InvalidNextToken of InvalidNextToken.t | `InvalidNumberPredicates of InvalidNumberPredicates.t | `InvalidNumberValueTests of InvalidNumberValueTests.t | `InvalidParameterValue of InvalidParameterValue.t | `InvalidQueryExpression of InvalidQueryExpression.t | `MissingParameter of MissingParameter.t | `NoSuchDomain of NoSuchDomain.t | `RequestTimeout of RequestTimeout.t | `TooManyRequestedAttributes of TooManyRequestedAttributes.t | `Unknown_operation_error of string * string option ]
Sourceval error_to_json : error -> Yojson.Safe.t
Sourceval to_value : t -> [> `Structure of (string * [> `Structure of (string * [> `List of [> `Structure of (string * [> `List of [> `Structure of (string * [> `String of String_.t ]) list ] list | `String of String_.t ]) list ] list | `String of String_.t ]) list ]) list ]
Sourceval to_query : t -> Awso.Client.Query.t
Sourceval of_xml : Awso.Xml.t -> t
Sourceval of_string : string -> t
Sourceval of_json : Yojson.Safe.t -> t
Sourceval to_json : t -> Yojson.Safe.t