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.
692 693 694 695 696 697 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 692 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.
690 691 692 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 690 def key @key end |
#range_key ⇒ Object (readonly)
Returns the value of attribute range_key.
690 691 692 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 690 def range_key @range_key end |
#table ⇒ Object (readonly)
Returns the value of attribute table.
690 691 692 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 690 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.
706 707 708 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 706 def add(values) @additions.merge!(values) end |
#delete(values) ⇒ Object
Removes values from the sets of the given columns
716 717 718 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 716 def delete(values) @deletions.merge!(values) end |
#set(values) ⇒ Object
Replaces the values of one or more attributes
723 724 725 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 723 def set(values) @updates.merge!(values) end |
#to_h ⇒ Object
Returns an AttributeUpdates hash suitable for passing to the V2 Client API
730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 |
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 730 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 |