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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
class SimpleDB
# @api private
module ConsistentReadOption
# Determines if SimpleDB should be read consistently or not.
#
# Precedence is given to:
#
# * `:consistent_read` option
# * SimpleDB.consistent_reads block value
# * AWS.config.simple_db_consistent_reads?
#
# @return [Boolean] Returns true if a read should be made consistently
# to SimpleDB.
def consistent_read options
if options.has_key?(:consistent_read)
options[:consistent_read] ? true : false
elsif SimpleDB.send(:in_consistent_reads_block?)
SimpleDB.send(:consistent_reads_state)
else
config.simple_db_consistent_reads?
end
end
end
end
end
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