Class: Arrow::ArrayBuilder
- Inherits:
-
Object
- Object
- Arrow::ArrayBuilder
- Defined in:
- lib/arrow/array-builder.rb
Class Method Summary collapse
Instance Method Summary collapse
Class Method Details
.build(values) ⇒ Object
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# File 'lib/arrow/array-builder.rb', line 23 def build(values) if self != ArrayBuilder builder = new return builder.build(values) end builder_class = nil values.each do |value| case value when nil # Ignore when true, false return BooleanArray.new(values) when String return StringArray.new(values) when Float return DoubleArray.new(values) when Integer if value < 0 builder = IntArrayBuilder.new return builder.build(values) else builder_class = UIntArrayBuilder end when Time data_type = TimestampDataType.new(:nano) builder = TimestampArrayBuilder.new(data_type) return builder.build(values) when DateTime return Date64Array.new(values) when Date return Date32Array.new(values) else return StringArray.new(values) end end if builder_class builder_class.new.build(values) else Arrow::StringArray.new(values) end end |
.buildable?(args) ⇒ Boolean
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# File 'lib/arrow/array-builder.rb', line 66 def buildable?(args) args.size == method(:build).arity end |
Instance Method Details
#append(*values) ⇒ Object
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# File 'lib/arrow/array-builder.rb', line 77 def append(*values) value_convertable = respond_to?(:convert_to_arrow_value, true) start_index = 0 current_index = 0 status = :value values.each do |value| if value.nil? if status == :value if start_index != current_index target_values = values[start_index...current_index] if value_convertable target_values = target_values.collect do |v| convert_to_arrow_value(v) end end append_values(target_values, nil) start_index = current_index end status = :null end else if status == :null append_nulls(current_index - start_index) start_index = current_index status = :value end end current_index += 1 end if start_index != current_index if status == :value if start_index == 0 and current_index == values.size target_values = values else target_values = values[start_index...current_index] end if value_convertable target_values = target_values.collect do |v| convert_to_arrow_value(v) end end append_values(target_values, nil) else append_nulls(current_index - start_index) end end end |
#append_nulls(n) ⇒ Object
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# File 'lib/arrow/array-builder.rb', line 126 def append_nulls(n) n.times do append_null end end |
#build(values) ⇒ Object
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# File 'lib/arrow/array-builder.rb', line 71 def build(values) append(*values) finish end |