Class: TableSync::Model::ActiveRecord

Inherits:
Object
  • Object
show all
Defined in:
lib/table_sync/model/active_record.rb

Defined Under Namespace

Classes: AfterCommitWrap

Instance Method Summary collapse

Constructor Details

#initialize(table_name) ⇒ ActiveRecord

Returns a new instance of ActiveRecord.



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# File 'lib/table_sync/model/active_record.rb', line 19

def initialize(table_name)
  @raw_model = Class.new(::ActiveRecord::Base) do
    self.table_name = table_name
    self.inheritance_column = nil
  end
end

Instance Method Details

#after_commit(&block) ⇒ Object 



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# File 'lib/table_sync/model/active_record.rb', line 87

def after_commit(&block)
  db.add_transaction_record(AfterCommitWrap.new(&block))
end

#columns ⇒ Object 



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# File 'lib/table_sync/model/active_record.rb', line 26

def columns
  raw_model.column_names.map(&:to_sym)
end

#destroy(data) ⇒ Object 



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# File 'lib/table_sync/model/active_record.rb', line 76

def destroy(data)
  transaction do
    row = raw_model.lock("FOR UPDATE").find_by(data)&.destroy!
    [row_to_hash(row)]
  end
end

#primary_keys ⇒ Object 



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# File 'lib/table_sync/model/active_record.rb', line 30

def primary_keys
  db.execute("    SELECT kcu.column_name\n    FROM INFORMATION_SCHEMA.TABLES t\n    LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc\n      ON tc.table_catalog = t.table_catalog\n      AND tc.table_schema = t.table_schema\n      AND tc.table_name = t.table_name\n      AND tc.constraint_type = 'PRIMARY KEY'\n    LEFT JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE kcu\n      ON kcu.table_catalog = tc.table_catalog\n      AND kcu.table_schema = tc.table_schema\n      AND kcu.table_name = tc.table_name\n      AND kcu.constraint_name = tc.constraint_name\n    WHERE\n      t.table_schema NOT IN ('pg_catalog', 'information_schema')\n      AND t.table_schema = '\#{table_info[:schema]}'\n      AND t.table_name = '\#{table_info[:name]}'\n    ORDER BY\n      kcu.ordinal_position\n  SQL\nend\n").column_values(0).map(&:to_sym)

#transaction(&block) ⇒ Object 



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# File 'lib/table_sync/model/active_record.rb', line 83

def transaction(&block)
  ::ActiveRecord::Base.transaction(&block)
end

#upsert(data:, target_keys:, version_key:, first_sync_time_key:, default_values:) ⇒ Object 



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# File 'lib/table_sync/model/active_record.rb', line 53

def upsert(data:, target_keys:, version_key:, first_sync_time_key:, default_values:)
  data = Array.wrap(data)

  transaction do
    data.map do |datum|
      conditions = datum.select { |k| target_keys.include?(k) }

      row = raw_model.lock("FOR NO KEY UPDATE").find_by(conditions)
      if row
        next if datum[version_key] <= row[version_key]

        row.update!(datum)
      else
        create_data = datum.merge(default_values)
        create_data[first_sync_time_key] = Time.current if first_sync_time_key
        row = raw_model.create!(create_data)
      end

      row_to_hash(row)
    end.compact
  end
end