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Versions: 17
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Contents
module Scenic
module Adapters
class Postgres
# Decorates an ActiveRecord connection with methods that help determine
# the connections capabilities.
#
# Every attempt is made to use the versions of these methods defined by
# Rails where they are available and public before falling back to our own
# implementations for older Rails versions.
#
# @api private
class Connection < SimpleDelegator
# True if the connection supports materialized views.
#
# Delegates to the method of the same name if it is already defined on
# the connection. This is the case for Rails 4.2 or higher.
#
# @return [Boolean]
def supports_materialized_views?
if undecorated_connection.respond_to?(:supports_materialized_views?)
super
else
postgresql_version >= 90300
end
end
# True if the connection supports concurrent refreshes of materialized
# views.
#
# @return [Boolean]
def supports_concurrent_refreshes?
postgresql_version >= 90400
end
# An integer representing the version of Postgres we're connected to.
#
# postgresql_version is public in Rails 5, but protected in earlier
# versions.
#
# @return [Integer]
def postgresql_version
if undecorated_connection.respond_to?(:postgresql_version)
super
else
undecorated_connection.send(:postgresql_version)
end
end
private
def undecorated_connection
__getobj__
end
end
end
end
end
Version data entries
17 entries across 17 versions & 2 rubygems