Class: Dynamoid::AdapterPlugin::AwsSdkV2::ItemUpdater
- Inherits:
-
Object
- Object
- Dynamoid::AdapterPlugin::AwsSdkV2::ItemUpdater
- Defined in:
- lib/dynamoid/adapter_plugin/aws_sdk_v2.rb
Overview
Mimics behavior of the yielded object on DynamoDB’s update_item API (high level).
Constant Summary collapse
- ADD =
"ADD".freeze
- DELETE =
"DELETE".freeze
- PUT =
"PUT".freeze
Instance Attribute Summary collapse
-
#key ⇒ Object
readonly
Returns the value of attribute key.
-
#range_key ⇒ Object
readonly
Returns the value of attribute range_key.
-
#table ⇒ Object
readonly
Returns the value of attribute table.
Instance Method Summary collapse
-
#add(values) ⇒ Object
Adds the given values to the values already stored in the corresponding columns.
-
#delete(values) ⇒ Object
Removes values from the sets of the given columns.
-
#initialize(table, key, range_key = nil) ⇒ ItemUpdater
constructor
A new instance of ItemUpdater.
-
#set(values) ⇒ Object
Replaces the values of one or more attributes.
-
#to_h ⇒ Object
Returns an AttributeUpdates hash suitable for passing to the V2 Client API.
Constructor Details
#initialize(table, key, range_key = nil) ⇒ ItemUpdater
Returns a new instance of ItemUpdater.
823 824 825 826 827 828 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 823 def initialize(table, key, range_key = nil) @table = table; @key = key, @range_key = range_key @additions = {} @deletions = {} @updates = {} end |
Instance Attribute Details
#key ⇒ Object (readonly)
Returns the value of attribute key.
821 822 823 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 821 def key @key end |
#range_key ⇒ Object (readonly)
Returns the value of attribute range_key.
821 822 823 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 821 def range_key @range_key end |
#table ⇒ Object (readonly)
Returns the value of attribute table.
821 822 823 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 821 def table @table end |
Instance Method Details
#add(values) ⇒ Object
Adds the given values to the values already stored in the corresponding columns. The column must contain a Set or a number.
837 838 839 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 837 def add(values) @additions.merge!(values) end |
#delete(values) ⇒ Object
Removes values from the sets of the given columns
847 848 849 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 847 def delete(values) @deletions.merge!(values) end |
#set(values) ⇒ Object
Replaces the values of one or more attributes
854 855 856 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 854 def set(values) @updates.merge!(values) end |
#to_h ⇒ Object
Returns an AttributeUpdates hash suitable for passing to the V2 Client API
861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 861 def to_h ret = {} @additions.each do |k,v| ret[k.to_s] = { action: ADD, value: v } end @deletions.each do |k,v| ret[k.to_s] = { action: DELETE, value: v } end @updates.each do |k,v| ret[k.to_s] = { action: PUT, value: v } end ret end |