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49 lines
1.9 KiB
Ruby
49 lines
1.9 KiB
Ruby
module Fog
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module AWS
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class DynamoDB
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class Real
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class DeprecatedAttributeUpdates < Exception; end
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# Update DynamoDB item
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#
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# ==== Parameters
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# * 'table_name'<~String> - name of table for item
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# * 'key'<~Hash> - list of elements to be updated and their value
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# {
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# "ForumName": {"S": "Amazon DynamoDB"},
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# "Subject": {"S": "Maximum number of items?"}
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# }
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#
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# * 'options'<~Hash>:
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# * 'KeyConditionExpression'<~String> - the condition elements need to match
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# * 'ExpressionAttributeValues'<~Hash> - values to be used in the key condition expression
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# * 'ReturnValues'<~String> - data to return in %w{ALL_NEW ALL_OLD NONE UPDATED_NEW UPDATED_OLD}, defaults to NONE
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#
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# ==== Returns
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# * response<~Excon::Response>:
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# * body<~Hash>:
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# varies based on ReturnValues param, see: http://docs.amazonwebservices.com/amazondynamodb/latest/developerguide/API_UpdateItem.html
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#
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# See DynamoDB Documentation: http://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_UpdateItem.html
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#
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def update_item(table_name, key, options = {}, deprecated_attribute_updates = nil)
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if deprecated_attribute_updates
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raise DeprecatedAttributeUpdates, "The `20111205` DynamoDB API is deprecated. You need to use `ExpressionAttributeValues` instead of `AttributeUpdates`."
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attribute_updates = options
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options = deprecated_attribute_updates
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end
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body = {
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'Key' => key,
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'TableName' => table_name,
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'AttributeUpdates' => attribute_updates,
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}.merge(options)
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request(
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:body => Fog::JSON.encode(body),
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:headers => {'x-amz-target' => 'DynamoDB_20120810.UpdateItem'}
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)
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end
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end
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end
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end
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end
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