とりあえず考え中

gistfile1.groovy

class Parser {

    void parse(String docbase){
        Result result = getBuilder().build(docbase);
        print result.result
    }

    Builder getBuilder() {
        return new Builder();
    }

}

class Finder {
    List<String> find(String docbase) {
        List<String> list =  new ArrayList<String>() 
        list.add( docbase)
        return list  
    }
}

class Builder {
    
    Finder getFinder() {
        return new Finder();    
    } 

    Result build(String docbase) {
        Result result = new Result();
       List list = getFinder().find(docbase)
       list.each{  result = getConverter().convert(it) }
        return result
    }

    Converter getConverter(){
        return new Converter();
    }
}

class Converter {
     Result convert(String value) {
         Result result = new Result()
         result.result = "input value: ${value}" 
         result
     }
}

class Result {
    String result;
}

Parser parser = new Parser()
​parser.parse("asdf")