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Attribute.X.Name
and Attribute.X.Value
parameters. The client specifies the first attribute
by the parameters Attribute.0.Name
and Attribute.0.Value
,
the second attribute by the parameters Attribute.1.Name
and Attribute.1.Value
,
and so on.
Attributes are uniquely identified in 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 Attribute.X.Name
and Attribute.X.Value
are the same.
Optionally, the requestor can supply the Replace
parameter for each
individual attribute. Setting this value to true
causes the new attribute
value to replace the existing attribute value(s). For example, if an item has the
attributes { 'a', '1' }
, { 'b', '2'}
and
{ 'b', '3' }and the requestor calls
PutAttributes
using the attributes { 'b', '4' }with the
Replace
parameter set to true, the final attributes
of the item are changed to { 'a', '1' }
and { 'b', '4' }
,
which replaces the previous values of the 'b' attribute with the new value.
You cannot specify an empty string as an attribute name.
Because Amazon SimpleDB makes multiple copies of client data and uses an eventual consistency update model, an immediate GetAttributes or Select operation (read) immediately after a PutAttributes or DeleteAttributes operation (write) might not return the updated data.
The following limitations are enforced for this operation:
Namespace: Amazon.SimpleDB.Model
Assembly: AWSSDK.dll
Version: (assembly version)
public class PutAttributesRequest : AmazonSimpleDBRequest IRequestEvents
The PutAttributesRequest type exposes the following members
Name | Description | |
---|---|---|
PutAttributesRequest() | Empty constructor used to set properties independently even when a simple constructor is available | |
PutAttributesRequest(string, string, List<ReplaceableAttribute>) | ||
PutAttributesRequest(string, string, List<ReplaceableAttribute>, UpdateCondition) |
Name | Type | Description | |
---|---|---|---|
Attributes | System.Collections.Generic.List<Amazon.SimpleDB.Model.ReplaceableAttribute> | Gets and sets the property Attributes. The list of attributes. | |
DomainName | System.String | Gets and sets the property DomainName. The name of the domain in which to perform the operation. | |
Expected | Amazon.SimpleDB.Model.UpdateCondition | Gets and sets the property Expected. The update condition which, if specified, determines whether the specified attributes will be updated or not. The update condition must be satisfied in order for this request to be processed and the attributes to be updated. | |
ItemName | System.String | Gets and sets the property ItemName. The name of the item. |
.NET Framework:
Supported in: 4.5, 4.0, 3.5
.NET for Windows Store apps:
Supported in: Windows 8.1, Windows 8
.NET for Windows Phone:
Supported in: Windows Phone 8.1, Windows Phone 8