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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
module Arrow
class Array
include Enumerable
include GenericFilterable
include GenericTakeable
class << self
def new(*args)
_builder_class = builder_class
return super if _builder_class.nil?
return super unless _builder_class.buildable?(args)
_builder_class.build(*args)
end
def builder_class
builder_class_name = "#{name}Builder"
return nil unless const_defined?(builder_class_name)
const_get(builder_class_name)
end
end
# @param i [Integer]
# The index of the value to be gotten.
#
# You can specify negative index like for `::Array#[]`.
#
# @return [Object, nil]
# The `i`-th value.
#
# `nil` for NULL value or out of range `i`.
def [](i)
i += length if i < 0
return nil if i < 0 or i >= length
if null?(i)
nil
else
get_value(i)
end
end
# @param other [Arrow::Array] The array to be compared.
# @param options [Arrow::EqualOptions, Hash] (nil)
# The options to custom how to compare.
#
# @return [Boolean]
# `true` if both of them have the same data, `false` otherwise.
#
# @since 5.0.0
def equal_array?(other, options=nil)
equal_options(other, options)
end
def each
return to_enum(__method__) unless block_given?
length.times do |i|
yield(self[i])
end
end
def reverse_each
return to_enum(__method__) unless block_given?
(length - 1).downto(0) do |i|
yield(self[i])
end
end
def to_arrow
self
end
alias_method :value_data_type_raw, :value_data_type
def value_data_type
@value_data_type ||= value_data_type_raw
end
def to_a
values
end
alias_method :is_in_raw, :is_in
def is_in(values)
case values
when ::Array
if self.class.builder_class.buildable?([values])
values = self.class.new(values)
else
values = self.class.new(value_data_type, values)
end
is_in_raw(values)
when ChunkedArray
is_in_chunked_array(values)
else
is_in_raw(values)
end
end
# @api private
alias_method :concatenate_raw, :concatenate
# Concatenates the given other arrays to the array.
#
# @param other_arrays [::Array, Arrow::Array] The arrays to be
# concatenated.
#
# Each other array is processed by {#resolve} before they're
# concatenated.
#
# @example Raw Ruby Array
# array = Arrow::Int32Array.new([1])
# array.concatenate([2, 3], [4]) # => Arrow::Int32Array.new([1, 2, 3, 4])
#
# @example Arrow::Array
# array = Arrow::Int32Array.new([1])
# array.concatenate(Arrow::Int32Array.new([2, 3]),
# Arrow::Int8Array.new([4])) # => Arrow::Int32Array.new([1, 2, 3, 4])
#
# @since 4.0.0
def concatenate(*other_arrays)
other_arrays = other_arrays.collect do |other_array|
resolve(other_array)
end
concatenate_raw(other_arrays)
end
# Concatenates the given other array to the array.
#
# If you have multiple arrays to be concatenated, you should use
# {#concatenate} to concatenate multiple arrays at once.
#
# @param other_array [::Array, Arrow::Array] The array to be concatenated.
#
# `@other_array` is processed by {#resolve} before it's
# concatenated.
#
# @example Raw Ruby Array
# Arrow::Int32Array.new([1]) + [2, 3] # => Arrow::Int32Array.new([1, 2, 3])
#
# @example Arrow::Array
# Arrow::Int32Array.new([1]) +
# Arrow::Int32Array.new([2, 3]) # => Arrow::Int32Array.new([1, 2, 3])
#
# @since 4.0.0
def +(other_array)
concatenate(other_array)
end
# Ensures returning the same data type array from the given array.
#
# @return [Arrow::Array]
#
# @overload resolve(other_raw_array)
#
# @param other_raw_array [::Array] A raw Ruby Array. A new Arrow::Array
# is built by `self.class.new`.
#
# @example Raw Ruby Array
# int32_array = Arrow::Int32Array.new([1])
# other_array = int32_array.resolve([2, 3, 4])
# other_array # => Arrow::Int32Array.new([2, 3, 4])
#
# @overload resolve(other_array)
#
# @param other_array [Arrow::Array] Another Arrow::Array.
#
# If the given other array is an same data type array of
# `self`, the given other array is returned as-is.
#
# If the given other array isn't an same data type array of
# `self`, the given other array is casted.
#
# @example Same data type
# int32_array = Arrow::Int32Array.new([1])
# other_int32_array = Arrow::Int32Array.new([2, 3, 4])
# other_array = int32_array.resolve(other_int32_array)
# other_array.object_id == other_int32_array.object_id
#
# @example Other data type
# int32_array = Arrow::Int32Array.new([1])
# other_int8_array = Arrow::Int8Array.new([2, 3, 4])
# other_array = int32_array.resolve(other_int32_array)
# other_array #=> Arrow::Int32Array.new([2, 3, 4])
#
# @since 4.0.0
def resolve(other_array)
if other_array.is_a?(::Array)
builder_class = self.class.builder_class
if builder_class.nil?
message =
"[array][resolve] can't build #{value_data_type} array " +
"from raw Ruby Array"
raise ArgumentError, message
end
if builder_class.buildable?([other_array])
other_array = builder_class.build(other_array)
elsif builder_class.buildable?([value_data_type, other_array])
other_array = builder_class.build(value_data_type, other_array)
else
message =
"[array][resolve] need to implement " +
"a feature that building #{value_data_type} array " +
"from raw Ruby Array"
raise NotImpelemented, message
end
other_array
elsif other_array.respond_to?(:value_data_type)
return other_array if value_data_type == other_array.value_data_type
other_array.cast(value_data_type)
else
message =
"[array][resolve] can't build #{value_data_type} array: " +
"#{other_array.inspect}"
raise ArgumentError, message
end
end
end
end
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