シンプルにS2を使う

JAVA SEASAR

とりあえず最小限の構成で触ってみた。
servlet-api.jarは必須かぁ…

ディレクトリ/ファイル構成


メイン



public class Main {
    public static final void main(String[] args) {

        S2Container container = new S2ContainerImpl();

        container.register(FooImpl.class);

        container.register(BarImpl.class);

        container.register(ZooImpl.class);

        container.register(BazImpl.class);

        Baz baz = (Baz) container.getComponent(Baz.class);

        baz.perform();

    }
}

コンポーネント(インターフェース)



public interface Bar {
    public void perform();
}


public interface Baz {
    public void perform();
}


public interface Foo {
    public void perform();
}


public interface Zoo {
    public void perform();
}

コンポーネント(実装)



public class BarImpl implements Bar {
    public void perform() {

        System.out.println(this);

    }
}


public class BazImpl implements Baz {
    private Foo foo = null;
    public void setFoo(Foo foo) {

        this.foo = foo;

    }
    private Bar bar = null;
    public void setBar(Bar bar) {

        this.bar = bar;

    }
    /////////////////////////////////////////////////////////////////

    public void perform() {

        System.out.println(this);

        foo.perform();

        bar.perform();

    }
}


public class FooImpl implements Foo {
    private Zoo zoo = null;
    public void setZoo(Zoo zoo) {

        this.zoo = zoo;

    }
    public void perform() {

        System.out.println(this);

        zoo.perform();

    }

}


public class ZooImpl implements Zoo {
    public void perform() {

        System.out.println(this);

    }

}

はてなアンテナからOPMLを生成する

RUBY

at2opml.rb



#!/usr/bin/env ruby

require "open-uri"

require "csv"

require "kconv"

require "rexml/document"

$stdout.sync = true
########################################
class Page

  def initialize(url)

    @url = url

  end
  def feed

    hrss = hatena(@url)

    return hrss if hrss

    open(@url) {|f|

      f.read.scan(/<link\b[^>]+>/i) {|m|

        if attr(m, "rel") == "alternate" || attr(m, "type") == "application/rss+xml"

          return attr(m, "href")

        end

      }

    }

    return nil

  end
  private

  def hatena(url)

    return (url =~ %r|^(http://d.hatena.ne.jp/[^/]+)/?$|) ? $1 + "/rss" : nil

  end
  def attr(elem, name)

    elem.slice(Regexp.new('\b' + name + '="?([^"\s]+)"?\b'), 1)

  end

end
########################################
class OPML

  def initialize(title)

    @doc = REXML::Document.new

    @doc << REXML::XMLDecl.new("1.0", "UTF-8")

    root = @doc.add_element("opml", "version"=>"1.0")

    root.add_element("head").add_element("title").text = title

    @body = root.add_element("body")

  end
  def add(title, url)

    page = Page.new(url)

    feed = page.feed

    if feed

      puts title + " => " + feed

      attrs = {"title"=>title, "htmlUrl"=>url, "xmlUrl"=>feed, "type"=>"rss"}

      @body.add_element("outline", attrs)

    else

      puts "warning: #{title}のフィードが見つかりませんでした"

    end

  end
  def write(output, indent=-1, transitive=false)

    @doc.write(output, indent, transitive)

  end
  def to_s

    return @doc.to_s

  end

end
########################################
def get_lirs(id)

  lirs = nil

  begin

    puts "#{id}のアンテナを開きます..."

    f = open("http://a.hatena.ne.jp/#{id}/source?mode=lirs")

    lirs = CSV.parse(f.read.tosjis)

  ensure

    f.close if f

  end

  return lirs

end
########################################
unless ARGV.length == 1

  puts "at2opml.rb はてなID"

  exit

end
id = ARGV[0]

filename = "antenna.xml"

lirs = get_lirs(id)

opml = OPML.new("はてなアンテナ - #{id}のアンテナ")

lirs.each {|row| opml.add(row[6], row[5])}

puts "#{filename}を書き出します..."

File.open(filename, "w") {|f|

  opml.write(f, 0)

}

実行結果



~$ ./at2opml.rb winebarrel

winebarrelのアンテナを開きます...

a-sanの日記 => http://d.hatena.ne.jp/a-san/rss

chibafの日記 => http://d.hatena.ne.jp/chibaf/rss

...

antenna.xmlを書き出します...

~$