青青草原综合久久大伊人导航_色综合久久天天综合_日日噜噜夜夜狠狠久久丁香五月_热久久这里只有精品

EverSpring working shop

To pursue creative ideas based on nature.

統計

留言簿(1)

他山之石

閱讀排行榜

評論排行榜

Some notes about the Factory Patterns

?

One of the primary goals of using a factory is to organize your code so you don't need to select teh exact constructor type when creating an object.
Two kinds of Factory Patterns, actually, they are similar, with difference that the abstract factory can contain servral factory methods.
  • Factory Method
  • Abstract Factory.
The key roles in the Factory Patterns include:
  • Product : Actually it acts as the working horse in the real time processing, I mean to do the work belonging to the products.
  • Product specific factory :? The place where the special product is made. Please note the word "special", which means that even there is a Super Class of Factory, each kind of product needs a special defined factory as derived factory which is 1-to-1 tightly connected to this specific product.
  • Super Class of Factory:
    1. Actually, it acts as a place where the product specific factories gather.? A table of Concret Product Specific Factory Objects is maintained, as form of static member, by this class.
    2. Also, the class provide the virtual method of the Create() for the derivded Product Specific Factory class to implement respectively.
  • Factory Initializer: The responsibility of this Class is to realize all the necessary Product?Specific Factories, and place them into the static Factory Table of the Super Class Factory. This repsonsibility should and MUST be finished before all the necessary Fatories begin to work on manufacturing, normally occurs when the system is initialized.
Some rules(if can call them as rules)?needs to be noted when implemented by C++:
  1. The constructor of the specific product normally is designed as Private member, to only allow friend class to access. The purpose of this rule is to prevent the product to be made by incorrect factory.
  2. The 1-to-1 product specific factory is designed as the friend class of the its specific product class.? The implementation of the Product specifc factory could be combined into the internal body of the product as the form of Product::Factory. We can also to place the factory out the product, as the form of ProductFactory. As you wish, :)
  3. The list of the concret factories of the super class of factory is designed as static. The index of the list is used to find the correct concrete factory by passing the Identifier parameter.
  4. The signleton is also used: Factory and the Factory Initializer should be singleton. In other words,?we can only?has only one set of factories and only one factory initializer.?Otherwise, there will exist two interactive factory framework in a single system. The result is that the system is crashed.

Any supplementary information or correction is to be attached later, with further understanding on this important Patterns.

Alex Zhang

posted on 2007-12-11 22:55 everspring79 閱讀(390) 評論(1)  編輯 收藏 引用 所屬分類: Notes

評論

# re: Some notes about the Factory Patterns 2008-01-23 17:54 everspring79

This Monday, I hold a presentation about the design of the fpf agent by introducing the concept of the abstract factory. However, maybe it is due to my presentation skill, the audience does not show great interest on this design pattern.   回復  更多評論   

青青草原综合久久大伊人导航_色综合久久天天综合_日日噜噜夜夜狠狠久久丁香五月_热久久这里只有精品
  • <ins id="pjuwb"></ins>
    <blockquote id="pjuwb"><pre id="pjuwb"></pre></blockquote>
    <noscript id="pjuwb"></noscript>
          <sup id="pjuwb"><pre id="pjuwb"></pre></sup>
            <dd id="pjuwb"></dd>
            <abbr id="pjuwb"></abbr>
            一区二区日韩欧美| 亚洲欧洲在线免费| 亚洲欧美在线磁力| 国产日韩欧美| 美女主播精品视频一二三四| 麻豆久久久9性大片| 亚洲精品色婷婷福利天堂| 亚洲欧洲视频| 国产精品成人一区| 久久一区激情| 欧美久久一级| 欧美在线观看一区| 男人的天堂成人在线| 亚洲一区二区三区高清| 亚洲欧美区自拍先锋| 在线欧美福利| 中文在线资源观看网站视频免费不卡 | 亚洲欧美激情视频| 在线观看国产一区二区| 日韩午夜免费视频| 国产情侣久久| 亚洲精品日产精品乱码不卡| 国产精品日韩高清| 亚洲大胆女人| 国产毛片一区| 亚洲美女视频网| 亚洲一区二区不卡免费| 1000部国产精品成人观看| 一本久道久久综合婷婷鲸鱼 | 久久亚洲春色中文字幕| 一区二区三区高清不卡| 久久gogo国模啪啪人体图| 一区二区欧美视频| 久久夜色精品国产噜噜av| 翔田千里一区二区| 欧美精品99| 久久理论片午夜琪琪电影网| 欧美日本韩国在线| 欧美激情视频给我| 国产一区二区三区电影在线观看| 亚洲欧洲在线一区| 亚洲高清在线播放| 欧美一级精品大片| 亚洲综合精品一区二区| 欧美激情一区二区三区蜜桃视频 | 亚洲专区在线视频| 99精品免费网| 欧美肥婆bbw| 欧美国产欧美综合| 亚洲第一黄色| 久久狠狠婷婷| 久久精品视频免费观看| 国产区二精品视| 亚洲在线观看免费视频| 亚洲一区日韩在线| 欧美视频在线免费| 亚洲免费观看高清完整版在线观看熊| 亚洲国产高清在线| 久久男女视频| 狂野欧美激情性xxxx| 在线成人av| 老司机aⅴ在线精品导航| 免费不卡在线观看| 在线欧美三区| 免费看成人av| 亚洲韩国一区二区三区| 亚洲精品偷拍| 欧美日韩国内自拍| 一区二区三区av| 欧美一二三视频| 国产欧美精品一区| 欧美一区中文字幕| 免费欧美在线视频| 最新国产成人av网站网址麻豆| 欧美不卡在线视频| 亚洲精品视频在线看| 亚洲欧美日韩国产另类专区| 国产精品一区二区三区成人| 欧美一级成年大片在线观看| 久久综合网色—综合色88| 亚洲欧洲美洲综合色网| 欧美视频在线观看视频极品 | 久久色在线观看| 亚洲国产成人在线| 欧美精品日韩一本| 在线视频欧美日韩| 久久婷婷国产麻豆91天堂| 亚洲国产你懂的| 欧美日韩一区在线播放| 久久综合中文色婷婷| 亚洲毛片一区| 国产精品久久久久免费a∨| 久久国产婷婷国产香蕉| 亚洲欧洲一区二区天堂久久| 性欧美办公室18xxxxhd| 亚洲韩日在线| 国产精品久久久久毛片大屁完整版 | 欧美成年人视频| 宅男精品视频| 欧美11—12娇小xxxx| 亚洲天堂网在线观看| 黄色日韩精品| 欧美日韩综合不卡| 久久麻豆一区二区| 亚洲一区国产精品| 亚洲国产精品精华液网站| 亚洲欧美日韩精品| 日韩一级不卡| 黄色一区二区在线观看| 国产精品www网站| 免费的成人av| 欧美伊人久久| 日韩午夜av在线| 蘑菇福利视频一区播放| 午夜精品久久久久久久99热浪潮| 亚洲盗摄视频| 国产一区二区三区精品久久久| 欧美精彩视频一区二区三区| 久久久久九九视频| 午夜精品999| 一区二区三区国产在线| 亚洲品质自拍| 亚洲国产成人午夜在线一区| 久久久久中文| 欧美在线视频日韩| 香蕉乱码成人久久天堂爱免费| 日韩一级二级三级| 亚洲精品国产精品国自产在线| 红桃视频亚洲| 国内外成人免费视频| 国产精品一级二级三级| 欧美午夜电影网| 欧美特黄一级| 欧美日韩视频专区在线播放| 蜜桃视频一区| 欧美~级网站不卡| 久久最新视频| 欧美91福利在线观看| 久久综合色一综合色88| 久久久久久电影| 久久久噜噜噜久噜久久| 久久久噜噜噜久久中文字免 | 亚洲日本aⅴ片在线观看香蕉| 欧美黄色免费网站| 亚洲国产99| 亚洲国内自拍| 99精品热视频| 亚洲无线视频| 香蕉成人伊视频在线观看| 羞羞答答国产精品www一本| 午夜在线成人av| 久久精品人人爽| 欧美成人一区二区三区片免费| 欧美巨乳在线| 欧美日韩在线大尺度| 国产精品理论片| 国产午夜精品福利| 精品成人在线观看| 亚洲日韩视频| 亚洲免费人成在线视频观看| 午夜亚洲性色视频| 久久久久久久综合日本| 宅男噜噜噜66一区二区 | 亚洲黄色成人| 亚洲天堂男人| 久久免费高清| 亚洲精品国产精品乱码不99按摩 | 蜜臀a∨国产成人精品| 欧美日韩久久不卡| 国产欧美日韩综合一区在线观看 | 最新国产成人在线观看| 中文日韩在线视频| 久久成人一区| 亚洲国产小视频在线观看| 亚洲一区二区在线播放| 久久久久久久欧美精品| 欧美精品七区| 国产永久精品大片wwwapp| 亚洲三级影片| 久久精品国产96久久久香蕉| 亚洲清纯自拍| 久久成人综合视频| 国产精品mm| 亚洲高清一区二| 午夜精品理论片| 欧美激情视频在线播放| 亚洲欧美日韩一区二区在线 | 亚洲免费在线观看| 欧美~级网站不卡| 亚洲资源av| 欧美日韩亚洲三区| 亚洲欧洲久久| 另类春色校园亚洲| 亚洲色在线视频| 你懂的国产精品| 国产一区二区三区高清 | 一区二区三区视频观看| 欧美成人一品| 久久久精品tv| 国产视频观看一区|