Class: Dynamoid::AdapterPlugin::AwsSdkV2::Table

Inherits:
Object
  • Object
show all
Defined in:
lib/dynamoid/adapter_plugin/aws_sdk_v2.rb

Overview

Represents a table. Exposes data from the “DescribeTable” API call, and also provides methods for coercing values to the proper types based on the table’s schema data

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(schema) ⇒ Table

Returns a new instance of Table.

Parameters:

  • schema (Hash) —

    Data returns from a “DescribeTable” call



744
745
746
 
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 744

def initialize(schema)
  @schema = schema[:table]
end

Instance Attribute Details

#schema ⇒ Object (readonly)

Returns the value of attribute schema.



739
740
741
 
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 739

def schema
  @schema
end

Instance Method Details

#col_type(col) ⇒ Object

Returns the API type (e.g. “N”, “S”) for the given column, if the schema defines it, nil otherwise



766
767
768
769
770
 
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 766

def col_type(col)
  col = col.to_s
  col_def = schema[:attribute_definitions].find { |d| d[:attribute_name] == col.to_s }
  col_def && col_def[:attribute_type]
end

#hash_key ⇒ Object 



758
759
760
 
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 758

def hash_key
  @hash_key ||= schema[:key_schema].find { |d| d[:key_type] == HASH_KEY  }.try(:attribute_name).to_sym
end

#item_count ⇒ Object 



772
773
774
 
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 772

def item_count
  schema[:item_count]
end

#range_key ⇒ Object 



748
749
750
 
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 748

def range_key
  @range_key ||= schema[:key_schema].find { |d| d[:key_type] == RANGE_KEY }.try(:attribute_name)
end

#range_type ⇒ Object 



752
753
754
755
756
 
# File 'lib/dynamoid/adapter_plugin/aws_sdk_v2.rb', line 752

def range_type
  range_type ||= schema[:attribute_definitions].find { |d|
    d[:attribute_name] == range_key
  }.try(:fetch,:attribute_type, nil)
end