Class: ReportMe::ReportFactory

Inherits:
Object
  • Object
show all
Defined in:
lib/report_me/report_factory.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ReportFactory

Returns a new instance of ReportFactory.



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# File 'lib/report_me/report_factory.rb', line 14

def initialize
  @reports = []
end

Class Method Details

.create(&block) ⇒ Object 



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# File 'lib/report_me/report_factory.rb', line 7

def self.create(&block)
  rme = ReportMe::ReportFactory.new
  rme.instance_eval(&block)
  rme.run
  rme
end

Instance Method Details

#exec(sql) ⇒ Object 



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# File 'lib/report_me/report_factory.rb', line 139

def exec(sql)
  ActiveRecord::Base.connection.execute(sql)
end

#periods(today = DateTime.now) ⇒ Object 



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# File 'lib/report_me/report_factory.rb', line 18

def periods(today = DateTime.now)

  periods = []

  [:today, :day, :week, :calendar_week, :month, :calendar_month].each do |period|
  
    von, bis = case period
      when :today
        [today, today]
      when :day
        [today - 1.day, today - 1.day]
      when :week
        [today - 1.day - 1.week, today - 1.day]
      when :calendar_week
        n = today - 1.day
        [n - n.cwday + 1, n - n.cwday + 7]
      when :month
        [today - 1.day - 1.month, today - 1.day]
      when :calendar_month
        n = today - 1.month
        [n.beginning_of_month, n.end_of_month]
    end
  
    periods << {:name => period, :von => von, :bis => bis}

  end

  periods
end

#report(name, &block) ⇒ Object 



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# File 'lib/report_me/report_factory.rb', line 143

def report(name, &block)
  r = ReportMe::Report.new(name)
  r.instance_eval(&block)

  @reports << r
end

#report_exists?(name, von, bis) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/report_me/report_factory.rb', line 56

def report_exists?(name, von, bis)
  ActiveRecord::Base.connection.select_value("select 1 from #{report_information_table_name} where report = '#{name}' and von = '#{von}' and bis = '#{bis}'") != nil
end

#report_information_table_name ⇒ Object 



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# File 'lib/report_me/report_factory.rb', line 48

def report_information_table_name
  "report_informations"
end

#report_information_table_name_exist? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/report_me/report_factory.rb', line 52

def report_information_table_name_exist?
  ActiveRecord::Base.connection.select_value("show tables like '#{report_information_table_name}'") != nil
end

#reset ⇒ Object 



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# File 'lib/report_me/report_factory.rb', line 60

def reset
  exec("drop table if exists #{report_information_table_name};")
  
  periods.each do |period|
    @reports.each do |r|
      exec("drop table if exists #{r.table_name(period[:name])};")
    end
  end
end

#run ⇒ Object 



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# File 'lib/report_me/report_factory.rb', line 70

def run

  debug = false

  unless report_information_table_name_exist?
    ddl = <<-SQL
      create
        table report_informations
        (
          report varchar(255) not null,
          von datetime not null,
          bis datetime not null,
          created_at datetime not null,
          primary key (report)
        )
        ENGINE=InnoDB default CHARSET=utf8;
    SQL
    exec(ddl)
  end

  if debug
    # just for testing
    exec("truncate #{report_information_table_name};")
  end

  periods.each do |period|
  
    @reports.each do |r|
    
      von = period[:von].strftime("%Y-%m-%d 00:00:00")
      bis = period[:bis].strftime("%Y-%m-%d 23:59:59")

      table_name = r.table_name(period[:name])

      if debug
        # drop and create table while in testing mode
        exec("drop table if exists #{table_name};")
      end

      table_exist   = r.table_exist?(period[:name])
      sql           = r.sql(von, bis)
      report_exist  = report_exists?(table_name, von, bis)
    
      puts "report: #{r.name}_#{period[:name]} :: #{report_exist}"
    
    
      unless table_exist
        exec("create table #{table_name} ENGINE=InnoDB default CHARSET=utf8 as #{sql} limit 0;")
      end
    
      # puts sql
    
      if !report_exist || period[:name] == :today
        ActiveRecord::Base.transaction do
          exec("insert into #{report_information_table_name} values ('#{table_name}', '#{von}', '#{bis}', now());") unless report_exist

          if period[:name] == :today
            exec("truncate #{table_name};")
          end
        
          exec("insert into #{table_name} #{sql};")
        end
      end

    
    end
  end
end