Class: FreeZipcodeData::ZipcodeTable

Inherits:
DbTable
  • Object
show all
Defined in:
lib/free_zipcode_data/zipcode_table.rb

Constant Summary

Constants inherited from DbTable

DbTable::ISSUE_URL

Instance Attribute Summary

Attributes inherited from DbTable

#database, #tablename

Instance Method Summary collapse

Methods inherited from DbTable

#initialize, #update_progress

Constructor Details

This class inherits a constructor from FreeZipcodeData::DbTable

Instance Method Details

#build ⇒ Object 



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# File 'lib/free_zipcode_data/zipcode_table.rb', line 7

def build
  schema = <<-SQL
    create table #{tablename} (
      id integer not null primary key,
      code varchar(10) not null,
      state_id integer,
      city varchar(255),
      area_code varchar(3),
      lat float,
      lon float,
      accuracy varchar(8)
    )
  SQL
  database.execute_batch(schema)

  ndx = <<-SQL
    CREATE UNIQUE INDEX "main"."unique_zipcode"
    ON #{tablename} (state_id, code, city COLLATE NOCASE ASC);
  SQL
  database.execute_batch(ndx)
end

#write(row) ⇒ Object 



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# File 'lib/free_zipcode_data/zipcode_table.rb', line 29

def write(row)
  return nil unless row[:postal_code]

  state_id = get_state_id(row[:short_state], row[:state])
  city_name = escape_single_quotes(row[:city])

  sql = <<-SQL
    INSERT INTO zipcodes (code, state_id, city, lat, lon, accuracy)
    VALUES ('#{row[:postal_code]}',
      '#{state_id}',
      '#{city_name}',
      '#{row[:latitude]}',
      '#{row[:longitude]}',
      '#{row[:accuracy]}'
    )
  SQL

  begin
    database.execute(sql)
  rescue SQLite3::ConstraintException => _err
    # there are some duplicates - swallow them
  rescue StandardError => err
    raise "Please file an issue at #{ISSUE_URL}: [#{err}] -> SQL: [#{sql}]"
  end

  update_progress
end