The batch_put_attributes 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 { '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.
You cannot specify an empty string as an item or as an attribute name.
The batch_put_attributes operation
succeeds or fails in its entirety. There are no partial puts.
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
batch_put_attributes operations and
other operations in parallel. However, large numbers of concurrent
batch_put_attributes 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
batch_put_attributes operation
simpledb_batch_put_attributes(DomainName, Items)An empty list.
[required] The name of the domain in which the attributes are being stored.
[required] A list of items on which to perform the operation.
svc$batch_put_attributes(
DomainName = "string",
Items = list(
list(
Name = "string",
Attributes = list(
list(
Name = "string",
Value = "string",
Replace = TRUE|FALSE
)
)
)
)
)