{"id":5005,"date":"2021-01-29T09:48:47","date_gmt":"2021-01-29T00:48:47","guid":{"rendered":"https:\/\/taki-lab.site\/bocci\/?p=5005"},"modified":"2021-01-29T09:49:00","modified_gmt":"2021-01-29T00:49:00","slug":"%e3%80%90%e3%83%87%e3%82%b6%e3%82%a4%e3%83%b3%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3%e3%80%91chain-of-responsibility%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3","status":"publish","type":"post","link":"https:\/\/taki-lab.site\/bocci\/?p=5005","title":{"rendered":"\u3010\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3011Chain of Responsibility\u30d1\u30bf\u30fc\u30f3"},"content":{"rendered":"\n

Chain of Responsibility\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n

package org.example.chainofresponsibility;\r\n\r\npublic class Question {\r\n    public int level;\r\n    public Question(int level){\r\n        this.level = level;\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.chainofresponsibility;\r\n\r\npublic abstract class Handler {\r\n    private Handler next;\r\n\r\n    public Handler setNext(Handler next)\r\n    {\r\n        this.next = next;\r\n        return next;\r\n    }\r\n\r\n    public final void request(Question question)\r\n    {\r\n        if(judge(question)) {\r\n            \/\/ \u51e6\u7406\u5b8c\u4e86\r\n        } else if(next != null) {\r\n            next.request(question);\r\n        } else {\r\n            \/\/ \u51e6\u7406\u4e0d\u53ef\u80fd\r\n        }\r\n    }\r\n\r\n    protected abstract boolean judge(Question question);\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.chainofresponsibility;\r\n\r\npublic class ConcreteHandler1 extends Handler {\r\n    @Override\r\n    protected boolean judge(Question question) {\r\n        if(question.level <= 1) {\r\n            return true;\r\n        } else {\r\n            return false;\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.chainofresponsibility;\r\n\r\npublic class ConcreteHandler2 extends Handler{\r\n    @Override\r\n    protected boolean judge(Question question) {\r\n        if(question.level <= 2) {\r\n            return true;\r\n        } else {\r\n            return false;\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
package org.example.chainofresponsibility;\r\n\r\npublic class Main {\r\n    public static void main(String[] args)\r\n    {\r\n        Handler handler1 = new ConcreteHandler1();\r\n        Handler handler2 = new ConcreteHandler2();\r\n\r\n        handler1.setNext(handler2);\r\n\r\n        Question question = new Question(1);\r\n\r\n        handler1.request(question);\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
Chain of Responsibility\u306f\u51e6\u7406\u3092\u884c\u3046\u4eba(Handler)\u3092\u6570\u73e0\u3064\u306a\u304e\u306b\u914d\u5217\u3057\u3066\u304a\u304d\u3001\u30ea\u30af\u30a8\u30b9\u30c8(Question)\u306b\u5bfe\u3057\u3066\u5148\u982d\u306eHandler\u304b\u3089\u51e6\u7406\u304c\u53ef\u80fd\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a(judge)\u3057\u3001\u51e6\u7406\u3067\u304d\u306a\u3044\u7269\u3067\u3042\u308c\u3070\u5f8c\u308d\u306eHandler\u306b\u307e\u308b\u6295\u3052\u3059\u308b\u3001\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n\n
\u306a\u306e\u3067\u3001\u3042\u3089\u304b\u3058\u3081Handler\u3092\u7d99\u627f\u3057\u3066\u3044\u308bConcreteHandler\u3092\u4f5c\u6210\u3057\u3066\u6570\u73e0\u3064\u306a\u304e\u3092\u4f5c\u3063\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
ConcreteHandler\u306b\u3066judge=true\u306a\u3089\u3070\u3001\u6e21\u3055\u308c\u305fquestion\u3092\u9069\u5207\u306b\u51e6\u7406\u3057\u3001judge=false\u306a\u3089\u3070\u3001\u305d\u306equestion\u3092\u5f8c\u308d\u306eConcreteHander\u306b\u6e21\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\"\"<\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"
Chain of Responsibility\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002 Chain of Responsibility\u306f\u51e6\u7406\u3092\u884c\u3046\u4eba(Handler)\u3092\u6570\u73e0\u3064\u306a\u304e\u306b\u914d\u5217\u3057\u3066\u304a\u304d\u3001\u30ea\u30af\u30a8\u30b9\u30c8(Question)\u306b\u5bfe\u3057\u3066\u5148\u982d\u306e … \u7d9a\u304d\u3092\u8aad\u3080 \u3010\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3011Chain of Responsibility\u30d1\u30bf\u30fc\u30f3<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"\u3010\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3011Chain of Responsibility\u30d1\u30bf\u30fc\u30f3\n#TechCommit\n","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[225,3],"tags":[226],"class_list":["post-5005","post","type-post","status-publish","format-standard","hentry","category-225","category-3","tag-226"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t