Copyright | (c) 2013-2018 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 |
Language | Haskell2010 |
The BatchPutAttributes
operation creates or replaces attributes within one or more items. By using this operation, the client can perform multiple PutAttribute
operation with a single call. This helps yield savings in round trips and latencies, enabling Amazon SimpleDB to optimize requests and generally produce better throughput.
The client may specify the item name with the Item.X.ItemName
parameter. The client may specify new attributes using a combination of the Item.X.Attribute.Y.Name
and Item.X.Attribute.Y.Value
parameters. The client may specify the first attribute for the first item using the parameters Item.0.Attribute.0.Name
and Item.0.Attribute.0.Value
, and for the second attribute for the first item by the parameters Item.0.Attribute.1.Name
and Item.0.Attribute.1.Value
, and so on.
Attributes are uniquely identified within an item by their name/value combination. For example, a single item can have the attributes { "first_name", "first_value" }
and { "first_name", "second_value" }
. However, it cannot have two attribute instances where both the Item.X.Attribute.Y.Name
and Item.X.Attribute.Y.Value
are the same.
Optionally, the requester can supply the Replace
parameter for each individual value. Setting this value to true
will cause the new attribute values to replace the existing attribute values. For example, if an item I
has the attributes {
and a
, '1' }, { b
, '2'}{
and the requester does a BatchPutAttributes of b
, '3' }{
with the Replace parameter set to true, the final attributes of the item will be I
, b
, '4' }{
and a
, '1' }{
, replacing the previous values of the b
, '4' }b
attribute with the new value.
Important: This operation is vulnerable to exceeding the maximum URL size when making a REST request using the HTTP GET method. This operation does not support conditions using Expected.X.Name
, Expected.X.Value
, or Expected.X.Exists
. You can execute multiple BatchPutAttributes
operations and other operations in parallel. However, large numbers of concurrent BatchPutAttributes
calls can result in Service Unavailable (503) responses.
The following limitations are enforced for this operation: * 256 attribute name-value pairs per item * 1 MB request size * 1 billion attributes per domain * 10 GB of total user data storage per domain * 25 item limit per BatchPutAttributes
operation
Creating a Request
Creates a value of BatchPutAttributes
with the minimum fields required to make a request.
Use one of the following lenses to modify other fields as desired:
bpaDomainName
- The name of the domain in which the attributes are being stored.bpaItems
- A list of items on which to perform the operation.
data BatchPutAttributes Source #
See: batchPutAttributes
smart constructor.
Request Lenses
bpaDomainName :: Lens' BatchPutAttributes Text Source #
The name of the domain in which the attributes are being stored.
bpaItems :: Lens' BatchPutAttributes [ReplaceableItem] Source #
A list of items on which to perform the operation.
Destructuring the Response
batchPutAttributesResponse :: BatchPutAttributesResponse Source #
Creates a value of BatchPutAttributesResponse
with the minimum fields required to make a request.
data BatchPutAttributesResponse Source #
See: batchPutAttributesResponse
smart constructor.