Copyright | (c) 2013-2016 Brendan Hay |
---|---|
License | Mozilla Public License, v. 2.0. |
Maintainer | Brendan Hay <brendan.g.hay@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 ItemName
parameter. The client may specify new attributes using a combination of
the Name
and 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 Name
and
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 '{ 'a', '1' }, { 'b', '2'}'
and '{ 'b', '3' }' and the requester does a BatchPutAttributes of
'{'I', 'b', '4' }' with the Replace parameter set to true, the
final attributes of the item will be '{ 'a', '1' }' and
'{ 'b', '4' }', replacing the previous values of the 'b' attribute
with the new value.
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 Name
, Value
, or
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:
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.