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Contents
# 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 Column
include Enumerable
attr_reader :container
attr_reader :field
attr_reader :data
def initialize(container, index)
@container = container
@index = index
@field = @container.schema[@index]
@data = @container.get_column_data(@index)
end
def name
@field.name
end
def data_type
@field.data_type
end
def null?(i)
@data.null?(i)
end
def valid?(i)
@data.valid?(i)
end
def [](i)
@data[i]
end
def each(&block)
@data.each(&block)
end
def reverse_each(&block)
@data.reverse_each(&block)
end
def n_rows
@data.n_rows
end
alias_method :size, :n_rows
alias_method :length, :n_rows
def n_nulls
@data.n_nulls
end
def ==(other)
other.is_a?(self.class) and
@field == other.field and
@data == other.data
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems