aws-0.12: Amazon Web Services (AWS) for Haskell

CopyrightSoostone Inc
LicenseBSD3
MaintainerOzgun Ataman <ozgun.ataman@soostone.com>
Stabilityexperimental
Safe HaskellNone
LanguageHaskell2010

Aws.DynamoDb.Commands.Query

Description

Implementation of Amazon DynamoDb Query command.

See: http://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_Query.html

Synopsis

Documentation

data Query Source

A Query command that uses primary keys for an expedient scan.

Constructors

Query 

Fields

qTableName :: Text

Required.

qKeyConditions :: Slice

Required. Hash or hash-range main condition.

qFilter :: Conditions

Whether to filter results before returning to client

qStartKey :: Maybe [Attribute]

Exclusive start key to resume a previous query.

qLimit :: Maybe Int

Whether to limit result set size

qForwardScan :: Bool

Set to False for descending results

qSelect :: QuerySelect

What to return from Query

qRetCons :: ReturnConsumption
 
qIndex :: Maybe Text

Whether to use a secondary/global index

qConsistent :: Bool
 

Instances

data Slice Source

Slice is the primary constraint in a Query command, per AWS requirements.

All Query commands must specify a hash attribute via DEq and optionally provide a secondary range attribute.

Constructors

Slice 

Fields

sliceHash :: Attribute

Hash value of the primary key or index being used

sliceCond :: Maybe Condition

An optional condition specified on the range component, if present, of the primary key or index being used.

Instances

query Source

Arguments

:: Text

Table name

-> Slice

Primary key slice for query

-> Query 

Construct a minimal Query request.

data QueryResponse Source

Response to a Query query.

Constructors

QueryResponse 

Fields

qrItems :: Vector Item
 
qrLastKey :: Maybe [Attribute]
 
qrCount :: Int
 
qrScanned :: Int
 
qrConsumed :: Maybe ConsumedCapacity
 

Instances