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# Copyright 2011-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
module AWS
module Core
module Collection
# AWS::Core::Collection::Simple is used by collections that always
# recieve every matching items in a single response.
#
# This means:
#
# * Paging methods are simulated
#
# * Next tokens are artificial (guessable numeric offsets)
#
# AWS services generally return all items only for requests with a
# small maximum number of results.
#
# See {AWS::Core::Collection} for documentation on the available
# collection methods.
module Simple
include Model
include Enumerable
include Collection
protected
def _each_batch options = {}, &block
limit = _extract_limit(options)
next_token = _extract_next_token(options)
offset = next_token ? next_token.to_i - 1 : 0
total = 0
skipped = 0
simulated_next_token = nil
batch = []
_each_item(options.dup) do |item|
total += 1
# skip until we reach our offset (derived from the "next token")
if skipped < offset
skipped += 1
next
end
if limit
if batch.size < limit
batch << item
else
simulated_next_token = total
break
end
else
batch << item
end
end
yield(batch)
simulated_next_token
end
end
end
end
end
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