module Sequel::Plugins::OptimisticLocking::InstanceMethods
Public Instance Methods
before_destroy()
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Add the lock column instance filter to the object before destroying it.
Calls superclass method
# File lib/sequel/plugins/optimistic_locking.rb, line 46 def before_destroy lock_column_instance_filter super end
before_update()
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Add the lock column instance filter to the object before updating it.
Calls superclass method
# File lib/sequel/plugins/optimistic_locking.rb, line 52 def before_update lock_column_instance_filter super end
Private Instance Methods
_refresh(ds)
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Clear the instance filters when refreshing, so that attempting to refresh after a failed save removes the previous lock column filter (the new one will be added before updating).
Calls superclass method
# File lib/sequel/plugins/optimistic_locking.rb, line 68 def _refresh(ds) clear_instance_filters super end
_update_columns(columns)
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Only update the row if it has the same lock version, and increment the lock version.
Calls superclass method
# File lib/sequel/plugins/optimistic_locking.rb, line 75 def _update_columns(columns) lc = model.lock_column lcv = get_column_value(lc) columns[lc] = lcv + 1 super set_column_value("#{lc}=", lcv + 1) end
lock_column_instance_filter()
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Add the lock column instance filter to the object.
# File lib/sequel/plugins/optimistic_locking.rb, line 60 def lock_column_instance_filter lc = model.lock_column instance_filter(lc=>get_column_value(lc)) end