scala实现原型模式

package com.linewell.modeldesgin.prototype
/**
* 样例类，周报，通过其提供的copy方法完成一个原型模式
* @param name 姓名
* @param date 时间
* @param content 内容
*/
case class WeeklyLog(var name: String, var date: String, var content: String, var attachment: Attachment)

/**
* 附件样例类
* @param name 附件名
*/
case class Attachment(var name: String) {
    def download() = println("下载附件，文件名为：" + name)
}
/**
* 测试客户端
* Created by ctao on 2015/8/8.
*/

object Client extends App {
      val log_previous = WeeklyLog("陈珏煊", "第10周", "本周主要是进行设计模式学习",Attachment("原型模式.pdf"))
        println("*******周报*******")
        println("周次：" + log_previous.date)
        println("姓名：" + log_previous.name)
        println("内容：" + log_previous.content)
        log_previous.attachment.download()
        println("----------------------------")

        val log_new = log_previous.copy()
        /**
         * 结果为false，由此可以看出为深克隆
         */
        println(log_new.eq(log_previous))

        /**
         * 结果为true，附件对象为浅克隆
         */
        println(log_new.attachment.eq(log_previous.attachment))
        log_new.date = "第11周"
        log_new.attachment = Attachment("工厂模式.pdf")
        println("*******周报*******")
        println("周次：" + log_new.date)
        println("姓名：" + log_new.name)
        println("内容：" + log_new.content)
        log_new.attachment.download()
        println("----------------------------")

}

package com.linewell.modeldesgin.prototype

/**
* 原型模式
* Created by ctao on 2015/8/8.
*/
/**
* 原型管理器
*/
object PrototypeManager {
    //存储officedocument对象
    var ht = new scala.collection.mutable.HashMap[String, OfficialDocument]
    //默模版
    ht += ("far" -> new FAR("<可行性报告>"))
    ht += ("srs" -> new SRS("<软件需求规格说明书>"))

    //增加文章模版
    def addOfficialDocument(key: String, officialDocument: OfficialDocument) = ht += (key -> officialDocument)

    //获取模版
    def getOfficialDocument(key: String): OfficialDocument = ht.getOrElse(key, OfficialDocument("null")).copy()

}

/**
* 公文样例类
* @param title 标题
*/
case class OfficialDocument(title: String) {
    def display(): Unit = println("公文标题：" + title)
}

/**
* 可行性分析报告
* @param title 标题
*/
class FAR(title: String) extends OfficialDocument(title) {
   // override def display() = println("公文标题：" + title)
}

/**
* 软件需求规格说明书
* @param title 标题
*/
class SRS(title: String) extends OfficialDocument(title) {
   // override def display() = println("公文标题：" + title)
}


package com.linewell.modeldesgin.prototype

/**
* 测试客户端
* Created by ctao on 2015/8/8.
*/
object Client extends App {
    //原型管理器
    val pm = PrototypeManager
   //公文对象，从hashmap中获取克隆对象
    val doc1 = pm.getOfficialDocument("")
    val doc2 = pm.getOfficialDocument("")
    doc1.display()
    doc2.display()
    println(doc1.eq(doc2))

}