Class: Kiba::Extend::Transforms::CombineValues::FullRecord

Inherits:
FromFieldsWithDelimiter show all
Defined in:
lib/kiba/extend/transforms/combine_values/full_record.rb

Overview

Concatenates values of all fields in each record together into the target field, using the given string as value separator in the combined value

NOTE: Run with defaults, behaves the same as FromFieldsWithDelimiter except FullRecord retains source fields.

Examples:

With defaults

# Used in pipeline as:
# transform CombineValues::FullRecord
xform = CombineValues::FullRecord.new
input = [
  {name: "Weddy", sex: "m", source: "adopted"},
  {source: "hatched", sex: "f", name: "Niblet"},
  {source: "", sex: "m", name: "Tiresias"},
  {name: "Keet", sex: nil, source: "hatched"},
]
result = input.map{ |row| xform.process(row) }
expected = [
  {name: "Weddy", sex: "m", source: "adopted",
    index: "Weddy m adopted"},
  {source: "hatched", sex: "f", name: "Niblet", index:
    "Niblet f hatched"},
  {source: "", sex: "m", name: "Tiresias", index: "Tiresias m"},
  {name: "Keet", sex: nil, source: "hatched", index: 'Keet hatched'}
]
expect(result).to eq(expected)

With custom target and delim

# Used in pipeline as:
# transform CombineValues::FullRecord, target: :all, delim: "."
xform = CombineValues::FullRecord.new(
  target: :all,
  delim: "."
)
input = [
  {name: "Weddy", sex: "m", source: "adopted"},
  {source: "hatched", sex: "f", name: "Niblet"},
  {source: "", sex: "m", name: "Tiresias"},
  {name: "Keet", sex: nil, source: "hatched"},
]
result = input.map{ |row| xform.process(row) }
expected = [
  {name: "Weddy", sex: "m", source: "adopted",
    all: "Weddy.m.adopted"},
  {source: "hatched", sex: "f", name: "Niblet", all:
    "Niblet.f.hatched"},
  {source: "", sex: "m", name: "Tiresias", all: "Tiresias.m"},
  {name: "Keet", sex: nil, source: "hatched", all: 'Keet.hatched'}
]
expect(result).to eq(expected)

With prepend_source_field_name and delete_sources true

# Used in pipeline as:
# transform CombineValues::FullRecord,
#    prepend_source_field_name: true,
#    delete_sources: true
xform = CombineValues::FullRecord.new(
  prepend_source_field_name: true,
  delete_sources: true
)
input = [
  {name: "Weddy", sex: "m", source: "adopted"},
  {name: "Keet", sex: nil, source: "hatched"},
]
result = input.map{ |row| xform.process(row) }
expected = [
  {index: "name: Weddy sex: m source: adopted"},
  {index: "name: Keet source: hatched"}
]
expect(result).to eq(expected)

Instance Method Summary collapse

Methods inherited from FromFieldsWithDelimiter

#process

Constructor Details

#initialize(target: :index, delim: " ", prepend_source_field_name: false, delete_sources: false) ⇒ FullRecord

Returns a new instance of FullRecord.

Parameters:

  • target (Symbol) (defaults to: :index) —

    Field into which the combined value will be written. May be one of the source fields

  • delim (String) (defaults to: " ") —

    Value used to separate individual field values in combined target field

  • prepend_source_field_name (Boolean) (defaults to: false) —

    Whether to insert the source field name before its value in the combined value.

  • delete_sources (Boolean) (defaults to: false) —

    Whether to delete the source fields after combining their values into the target field. If target field name is the same as one of the source fields, the target field is not deleted.



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# File 'lib/kiba/extend/transforms/combine_values/full_record.rb', line 87

def initialize(target: :index, delim: " ",
  prepend_source_field_name: false,
  delete_sources: false)
  super
end