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openproject/lib/report/table.rb

109 lines
2.7 KiB

#-- copyright
# ReportingEngine
#
# Copyright (C) 2010 - 2014 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#++
# encoding: UTF-8
require 'enumerator'
class Report::Table
attr_accessor :query
include Report::QueryUtils
def initialize(query)
@query = query
end
def row_index
get_index :row
end
def column_index
get_index :column
end
def row_fields
fields_for :row
end
def column_fields
fields_for :column
end
def rows_for(result)
fields_for result, :row
end
def columns_for(result)
fields_for result, :column
end
def fields_from(result, type)
fields_for(type).map { |k| map_field k, result.fields[k] }
end
##
# @param [Array] expected Fields expected
# @param [Array,Hash,Result] given Fields/result to be tested
# @return [TrueClass,FalseClass]
def satisfies?(type, expected, given)
given = fields_from(given, type) if given.respond_to? :to_hash
zipped = expected.zip given
zipped.all? { |a, b| a == b or b.nil? }
end
def fields_for(type)
@fields_for ||= begin
child, fields = query.chain, Hash.new { |h, k| h[k] = [] }
until child.filter?
fields[child.type].push(*child.group_fields)
child = child.child
end
fields
end
@fields_for[type]
end
def get_row(*args)
@query.each_row { |result| return with_gaps_for(type, result) if satisfies? :row, args, result }
[]
end
def with_gaps_for(type, result)
return enum_for(:with_gaps_for, type, result) unless block_given?
stack = get_index(type).dup
result.each_direct_result do |subresult|
yield nil until stack.empty? or satisfies? type, stack.shift, subresult
yield subresult
end
stack.size.times { yield nil }
end
def [](x, y)
get_row(row_index[y]).first(x).last
end
def get_index(type)
@indexes ||= begin
indexes = Hash.new { |h, k| h[k] = Set.new }
query.each_direct_result { |result| [:row, :column].each { |t| indexes[t] << fields_from(result, t) } }
indexes.keys.each { |k| indexes[k] = indexes[k].sort { |x, y| compare x, y } }
indexes
end
@indexes[type]
end
end