Copyright	(c) 2013-2021 Brendan Hay
License	Mozilla Public License, v. 2.0.
Maintainer	Brendan Hay <brendan.g.hay+amazonka@gmail.com>
Stability	auto-generated
Portability	non-portable (GHC extensions)
Safe Haskell	None

Amazonka.DynamoDB.Types.AttributeValue

Description

Synopsis

data AttributeValue = AttributeValue' {
- l :: Maybe [AttributeValue]
- ns :: Maybe [Text]
- m :: Maybe (HashMap Text AttributeValue)
- null :: Maybe Bool
- n :: Maybe Text
- bs :: Maybe [Base64]
- b :: Maybe Base64
- ss :: Maybe [Text]
- s :: Maybe Text
- bool :: Maybe Bool
}
newAttributeValue :: AttributeValue
attributeValue_l :: Lens' AttributeValue (Maybe [AttributeValue])
attributeValue_ns :: Lens' AttributeValue (Maybe [Text])
attributeValue_m :: Lens' AttributeValue (Maybe (HashMap Text AttributeValue))
attributeValue_null :: Lens' AttributeValue (Maybe Bool)
attributeValue_n :: Lens' AttributeValue (Maybe Text)
attributeValue_bs :: Lens' AttributeValue (Maybe [ByteString])
attributeValue_b :: Lens' AttributeValue (Maybe ByteString)
attributeValue_ss :: Lens' AttributeValue (Maybe [Text])
attributeValue_s :: Lens' AttributeValue (Maybe Text)
attributeValue_bool :: Lens' AttributeValue (Maybe Bool)

Documentation

data AttributeValue Source #

Represents the data for an attribute.

Each attribute value is described as a name-value pair. The name is the data type, and the value is the data itself.

For more information, see Data Types in the Amazon DynamoDB Developer Guide.

See: newAttributeValue smart constructor.

Constructors

AttributeValue'

Fields

l :: Maybe [AttributeValue]
An attribute of type List. For example:
```
"L": [ {"S": "Cookies"} , {"S": "Coffee"}, {"N", "3.14159"}]
```
ns :: Maybe [Text]
An attribute of type Number Set. For example:
```
"NS": ["42.2", "-19", "7.5", "3.14"]
```
Numbers are sent across the network to DynamoDB as strings, to maximize compatibility across languages and libraries. However, DynamoDB treats them as number type attributes for mathematical operations.
m :: Maybe (HashMap Text AttributeValue)
An attribute of type Map. For example:
```
"M": {"Name": {"S": "Joe"}, "Age": {"N": "35"}}
```
null :: Maybe Bool
An attribute of type Null. For example:
```
"NULL": true
```
n :: Maybe Text
An attribute of type Number. For example:
```
"N": "123.45"
```
Numbers are sent across the network to DynamoDB as strings, to maximize compatibility across languages and libraries. However, DynamoDB treats them as number type attributes for mathematical operations.
bs :: Maybe [Base64]
An attribute of type Binary Set. For example:
```
"BS": ["U3Vubnk=", "UmFpbnk=", "U25vd3k="]
```
b :: Maybe Base64
An attribute of type Binary. For example:
```
"B": "dGhpcyB0ZXh0IGlzIGJhc2U2NC1lbmNvZGVk"
```
ss :: Maybe [Text]
An attribute of type String Set. For example:
```
"SS": ["Giraffe", "Hippo" ,"Zebra"]
```
s :: Maybe Text
An attribute of type String. For example:
```
"S": "Hello"
```
bool :: Maybe Bool
An attribute of type Boolean. For example:
```
"BOOL": true
```

Instances

Instances details

Eq AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue Methods (==) :: AttributeValue -> AttributeValue -> Bool # (/=) :: AttributeValue -> AttributeValue -> Bool #
Read AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue Methods readsPrec :: Int -> ReadS AttributeValue # readList :: ReadS [AttributeValue] # readPrec :: ReadPrec AttributeValue # readListPrec :: ReadPrec [AttributeValue] #
Show AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue Methods showsPrec :: Int -> AttributeValue -> ShowS # show :: AttributeValue -> String # showList :: [AttributeValue] -> ShowS #
Generic AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue Associated Types type Rep AttributeValue :: Type -> Type # Methods from :: AttributeValue -> Rep AttributeValue x # to :: Rep AttributeValue x -> AttributeValue #
NFData AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue Methods rnf :: AttributeValue -> () #
Hashable AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue Methods hashWithSalt :: Int -> AttributeValue -> Int # hash :: AttributeValue -> Int #
ToJSON AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue Methods toJSON :: AttributeValue -> Value # toEncoding :: AttributeValue -> Encoding # toJSONList :: [AttributeValue] -> Value # toEncodingList :: [AttributeValue] -> Encoding #
FromJSON AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue Methods parseJSON :: Value -> Parser AttributeValue # parseJSONList :: Value -> Parser [AttributeValue] #
type Rep AttributeValue Source #
Instance details Defined in Amazonka.DynamoDB.Types.AttributeValue type Rep AttributeValue = D1 ('MetaData "AttributeValue" "Amazonka.DynamoDB.Types.AttributeValue" "libZSservicesZSamazonka-dynamodbZSamazonka-dynamodb" 'False) (C1 ('MetaCons "AttributeValue'" 'PrefixI 'True) (((S1 ('MetaSel ('Just "l") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [AttributeValue])) :: S1 ('MetaSel ('Just "ns") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Text]))) :: (S1 ('MetaSel ('Just "m") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe (HashMap Text AttributeValue))) :: (S1 ('MetaSel ('Just "null") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Bool)) :: S1 ('MetaSel ('Just "n") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text))))) :: ((S1 ('MetaSel ('Just "bs") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Base64])) :: S1 ('MetaSel ('Just "b") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Base64))) :: (S1 ('MetaSel ('Just "ss") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Text])) :: (S1 ('MetaSel ('Just "s") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)) :*: S1 ('MetaSel ('Just "bool") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Bool)))))))

newAttributeValue :: AttributeValue Source #

Create a value of AttributeValue with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:l:AttributeValue', attributeValue_l - An attribute of type List. For example:

"L": [ {"S": "Cookies"} , {"S": "Coffee"}, {"N", "3.14159"}]

$sel:ns:AttributeValue', attributeValue_ns - An attribute of type Number Set. For example:

"NS": ["42.2", "-19", "7.5", "3.14"]

Numbers are sent across the network to DynamoDB as strings, to maximize compatibility across languages and libraries. However, DynamoDB treats them as number type attributes for mathematical operations.

$sel:m:AttributeValue', attributeValue_m - An attribute of type Map. For example:

"M": {"Name": {"S": "Joe"}, "Age": {"N": "35"}}

$sel:null:AttributeValue', attributeValue_null - An attribute of type Null. For example:

"NULL": true

$sel:n:AttributeValue', attributeValue_n - An attribute of type Number. For example:

"N": "123.45"

Numbers are sent across the network to DynamoDB as strings, to maximize compatibility across languages and libraries. However, DynamoDB treats them as number type attributes for mathematical operations.

$sel:bs:AttributeValue', attributeValue_bs - An attribute of type Binary Set. For example:

"BS": ["U3Vubnk=", "UmFpbnk=", "U25vd3k="]

$sel:b:AttributeValue', attributeValue_b - An attribute of type Binary. For example:

"B": "dGhpcyB0ZXh0IGlzIGJhc2U2NC1lbmNvZGVk"-- -- Note: This Lens automatically encodes and decodes Base64 data. -- The underlying isomorphism will encode to Base64 representation during -- serialisation, and decode from Base64 representation during deserialisation. -- This Lens accepts and returns only raw unencoded data.

$sel:ss:AttributeValue', attributeValue_ss - An attribute of type String Set. For example:

"SS": ["Giraffe", "Hippo" ,"Zebra"]

$sel:s:AttributeValue', attributeValue_s - An attribute of type String. For example:

"S": "Hello"

$sel:bool:AttributeValue', attributeValue_bool - An attribute of type Boolean. For example:

"BOOL": true

attributeValue_l :: Lens' AttributeValue (Maybe [AttributeValue]) Source #

An attribute of type List. For example:

"L": [ {"S": "Cookies"} , {"S": "Coffee"}, {"N", "3.14159"}]

attributeValue_ns :: Lens' AttributeValue (Maybe [Text]) Source #

An attribute of type Number Set. For example:

"NS": ["42.2", "-19", "7.5", "3.14"]

Numbers are sent across the network to DynamoDB as strings, to maximize compatibility across languages and libraries. However, DynamoDB treats them as number type attributes for mathematical operations.

attributeValue_m :: Lens' AttributeValue (Maybe (HashMap Text AttributeValue)) Source #

An attribute of type Map. For example:

"M": {"Name": {"S": "Joe"}, "Age": {"N": "35"}}

attributeValue_null :: Lens' AttributeValue (Maybe Bool) Source #

An attribute of type Null. For example:

"NULL": true

attributeValue_n :: Lens' AttributeValue (Maybe Text) Source #

An attribute of type Number. For example:

"N": "123.45"

Numbers are sent across the network to DynamoDB as strings, to maximize compatibility across languages and libraries. However, DynamoDB treats them as number type attributes for mathematical operations.

attributeValue_bs :: Lens' AttributeValue (Maybe [ByteString]) Source #

An attribute of type Binary Set. For example:

"BS": ["U3Vubnk=", "UmFpbnk=", "U25vd3k="]

attributeValue_b :: Lens' AttributeValue (Maybe ByteString) Source #

An attribute of type Binary. For example:

"B": "dGhpcyB0ZXh0IGlzIGJhc2U2NC1lbmNvZGVk"-- -- Note: This Lens automatically encodes and decodes Base64 data. -- The underlying isomorphism will encode to Base64 representation during -- serialisation, and decode from Base64 representation during deserialisation. -- This Lens accepts and returns only raw unencoded data.

attributeValue_ss :: Lens' AttributeValue (Maybe [Text]) Source #

An attribute of type String Set. For example:

"SS": ["Giraffe", "Hippo" ,"Zebra"]

attributeValue_s :: Lens' AttributeValue (Maybe Text) Source #

An attribute of type String. For example:

"S": "Hello"

attributeValue_bool :: Lens' AttributeValue (Maybe Bool) Source #

An attribute of type Boolean. For example:

"BOOL": true