Class: AbstractImporter::Strategies::InsertStrategy

Inherits:
Base
  • Object
show all
Defined in:
lib/abstract_importer/strategies/insert_strategy.rb

Instance Attribute Summary

Attributes inherited from Base

#collection

Instance Method Summary collapse

Methods inherited from Base

#already_imported?, #prepare_attributes

Constructor Details

#initialize(collection) ⇒ InsertStrategy

Returns a new instance of InsertStrategy.



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# File 'lib/abstract_importer/strategies/insert_strategy.rb', line 8

def initialize(collection)
  super
  @batch = []
  @batch_size = 250
end

Instance Method Details

#flush ⇒ Object 



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# File 'lib/abstract_importer/strategies/insert_strategy.rb', line 38

def flush
  invoke_callback(:before_batch, @batch)

  begin
    tries = (tries || 0) + 1
    collection.scope.insert_many(@batch)
  rescue
    raise if tries > 1
    invoke_callback(:rescue_batch, @batch)
    retry
  end

  ids = collection.scope.where(legacy_id: @batch.map { |hash| hash[:legacy_id] })
  id_map.merge! collection.table_name, ids

  summary.created += ids.length

  @batch = []
end

#process_record(hash) ⇒ Object 



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# File 'lib/abstract_importer/strategies/insert_strategy.rb', line 15

def process_record(hash)
  summary.total += 1

  if already_imported?(hash)
    summary.already_imported += 1
    return
  end

  remap_foreign_keys!(hash)

  if redundant_record?(hash)
    summary.redundant += 1
    return
  end

  @batch << prepare_attributes(hash)
  flush if @batch.length >= @batch_size

rescue ::AbstractImporter::Skip
  summary.skipped += 1
end