Class: MakumbaImport::Importer

Inherits:
Object
  • Object
show all
Defined in:
lib/makumba_import/importer.rb

Class Method Summary collapse

Class Method Details

.generate_models(schema) ⇒ Object 



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# File 'lib/makumba_import/importer.rb', line 191

def self.generate_models(schema)
  txt = '';
  newOnes = {}

  schema.clone.each do |key, table|
    table.each do |name, field|
      if ["ptr"].include? field['type']
        newOnes[field['ptr']] = {} if newOnes[field['ptr']].blank?
        newOnes[field['ptr']][key+"_"+name] = {"type" => "has_many", "primary_key" => name, "link_from" => key}
      end
    end
  end
  
  newOnes.each do |k, v|
    schema[k]['ref'] = v 
  end
  
  schema.each do |key, table|
    tablename = key.gsub(".", "_")
    lastpart = key.split(".").last
    filename = tablename.classify.tableize.singularize + '.rb';

    txt = ''
    txt << "# " + tablename.classify.tableize.singularize + ".rb\n\n"
    
    txt << "class "+tablename.classify+" < ActiveRecord::Base\n"
    txt << "  self.table_name   = \""+tablename+"_\"\n"
    txt << "  self.primary_key  = \""+lastpart+"_\"\n"
    txt << "  self.pointer_type = \""+key+"\"\n\n"
    
    table.each do |name, field|
      if name == 'ref'
        field.each do |i, f|
          txt << "  has_many :"+f['link_from'].split('.').last.downcase.pluralize+", :foreign_key => '"+f['primary_key']+"_', :class_name => \""+f['link_from'].gsub(".","_").classify+"\"\n"
        end
      else
        #puts key
        if ["ptr"].include? field['type']
          txt << "  belongs_to :"+name.downcase+", :foreign_key => '"+name+"_', :class_name => '"+field['ptr'].gsub(".", "_").classify+"'\n"
          #puts "  belongs_to :"+name.downcase+", :foreign_key => '"+name+"_', :class_name => '"+field['ptr'].gsub(".", "_").classify+"'\n"
        end
      end
    end

    txt << "\n  fix_makumba_columns\n"
    
    txt << "end\n\n"

    File.open(@output_path+"app/models/"+filename, "w+") do |f|
      f.write(txt)
    end

  end
  
  txt    
end

.generate_ruby_schema(schema) ⇒ Object 



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# File 'lib/makumba_import/importer.rb', line 132

def self.generate_ruby_schema(schema)
  
  txt = "# encoding: UTF-8\n\n";
  
  txt << "ActiveRecord::Schema.define(:version => "+Time.now.strftime("%Y%m%d%H%M%S")+") do\n\n"
  
  schema.each do |key, table|
    tablename = key.gsub(".", "_")
    lastpart = key.split(".").last
    
    txt << "  create_table \""+tablename+"_\", :force => true do |t|\n"
    
    table.each do |name, field|
      #type = "integer "
      type = field['type']
      type = "integer " if ["int", "primary", "ptr", "enum", "set enum"].include? field['type']
      type = "string  " if ["char"].include? field['type']
      type = "boolean " if ["boolean"].include? field['type']
      type = "datetime" if ["date"].include? field['type']
      type = "text    " if ["text"].include? field['type']
      type = "float   " if ["real"].include? field['type']
      
      enum = "";
      
      if field['type'] == "enum"
        enum = "\t\t # "
        field['fields'].each {|id,f| enum << id+" = \""+f+"\", "}
        enum = enum[0...-2]
      end

      txt << "    t."+type+" \""+name+"_\""+(field['not_null'].blank? ? "" : ",  :null => false")+enum+"\n"
      
      if field['type'] == 'primary'
        txt << "    t.datetime \"TS_modify_\",  :null => false\n"
        txt << "    t.datetime \"TS_create_\",  :null => false\n"
      end
      
    end
    
    txt << "  end\n\n"
    
    txt << "  add_index \""+tablename+"_\", [\""+lastpart+"_\"], :name => \""+lastpart+"_\", :unique => true\n"
    table.each do |name, field|
      unless field['unique'].blank?
        txt << "  add_index \""+tablename+"_\", [\""+name+"_\"], :name => \""+name+"_\", :unique => true\n"
      end
    end
    
    txt << "  \n\n"
    
  end
  
  txt << "end\n\n"
  
  File.open(@output_path+"db/schema.rb", "w+") do |f|
    f.write(txt)
  end
end

.get_data(lines, mdd) ⇒ Object 



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# File 'lib/makumba_import/importer.rb', line 15

def self.get_data(lines, mdd)
  fieldRegexp = /^([a-zA-Z\_]+)\s*=\s*([^;]+);?(.*)/
  fieldTypes = ["int", "text", "real", "date", "boolean", "binary", "file"]
  
  schema = {}
  schema[mdd] = {}
  primary = mdd.split(".").last
  schema[mdd][primary] = {'type' => 'primary'}
  
  lines.each do |line|
    unless line.match("^#") or line.strip == "" or line.match("->")
      if m = fieldRegexp.match(line)
        obj = {}
        field = m[1].strip
        attrs = m[2].strip
        comment = m[3] ? m[3].strip.gsub(/^;/,"").strip : ""
        
        attrs.split(" ").each do |attr|
          if fieldTypes.include?(attr)
            obj['type'] = attr
          end
          if attr.match(/fixed/)
            obj['not_null'] = true
          end
        end
        if m2 = attrs.match(/char\[(\d+)\]/)
          obj['type'] = "char"
          obj['length'] = m2[1]
        end
        if attrs.match(/set$/)
          newmdd = mdd+".."+field
          lines2 = []
          lines.each do |l|
            if l.start_with?(field+"->")
              lines2.push l.gsub(field+"->", "")
            end
          end
          data2 = get_data(lines2, newmdd)
          schema.merge!(data2)
          schema[newmdd][primary] = {'type' => "ptr", 'ptr' => mdd}
        end
        if m3 = attrs.match(/int\s?\{([^\}]+)\}/)
          obj['type'] = "enum"
          obj['fields'] = {}
          # assuming there's no comma in the enum strings, (this is true for cherry)
          m3[1].split(",").each do |part|
            m4 = part.strip.match(/"([^"]+)"\s*=\s*(-?[0-9]+)/)
            obj['fields'][m4[2]] = m4[1]
          end
        end
        if m3 = attrs.match(/ptr\s+([a-zA-Z\.\_]+)/)
          obj['type'] = "ptr"
          obj['ptr'] = m3[1]
        end
        if m3 = attrs.match(/set\s+([a-zA-Z\.\_]+)/)
          newmdd = mdd+".."+field
          fieldname = m3[1].split('.').last
          schema[newmdd] = {}
          schema[newmdd][field] = {'type' => 'primary'}
          schema[newmdd][primary] = {'type' => "ptr", 'ptr' => mdd}
          schema[newmdd][fieldname] = {'type' => "ptr", 'ptr' => m3[1]}
        end
        if m3 = attrs.match(/set int\s?\{([^\}]+)\}/)
          fields = {}
          # assuming there's no comma in the enum strings, (this is true for cherry)
          m3[1].split(",").each do |part|
            m4 = part.strip.match(/"([^"]+)"\s*=\s*(-?[0-9]+)/)
            fields[m4[2]] = m4[1]
          end

          newmdd = mdd+".."+field
          schema[newmdd] = {}
          schema[newmdd][field] = {'type' => 'primary'}
          schema[newmdd][primary] = {'type' => "ptr", 'ptr' => mdd}
          schema[newmdd]['enum'] = {'type' => "set enum", 'fields' => fields}
        end
        if attrs.match(/not null/)
          obj['not_null'] = true
        end
        if attrs.match(/unique/)
          obj['unique'] = true
        end
        
        unless obj['type'].blank?
          schema[mdd][field] = obj 
        end
      end
      
    end
  end
  #puts schema
  schema
  
end

.load_mdds ⇒ Object 



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# File 'lib/makumba_import/importer.rb', line 110

def self.load_mdds
  dir = @mdd_path

  @files = Dir.glob(dir+"/*/*.mdd")
  @files |= Dir.glob(dir+"/*/*/*.mdd")
  @files |= Dir.glob(dir+"/*/*/*/*.mdd")
  
  schema = {}
  
  for file in @files
    unless File.directory?(file)
      filename = file.gsub(dir+"/", "").gsub(".mdd","")
      mdd = filename.gsub("/", ".")
      
      lines = open(file).map { |line| line }
      schema.merge!(get_data(lines, mdd))
    end
  end
  
  schema
end

.set_mdd_path(mdd_path) ⇒ Object 



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# File 'lib/makumba_import/importer.rb', line 7

def self.set_mdd_path(mdd_path)
  @mdd_path = mdd_path
end

.set_output_path(output_path) ⇒ Object 



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# File 'lib/makumba_import/importer.rb', line 11

def self.set_output_path(output_path)
  @output_path = output_path
end