{"id":337,"date":"2015-08-17T03:07:15","date_gmt":"2015-08-17T03:07:15","guid":{"rendered":"http:\/\/ta.onionmixer.net\/wordpress\/?p=337"},"modified":"2015-08-17T03:07:15","modified_gmt":"2015-08-17T03:07:15","slug":"design-pattern-for-smalltalk-mediator","status":"publish","type":"post","link":"http:\/\/ta.onionmixer.net\/wordpress\/?p=337","title":{"rendered":"Design Pattern for Smalltalk &#8211; Mediator"},"content":{"rendered":"<p><a href=\"http:\/\/ta.onionmixer.net\/wordpress\/?attachment_id=338\" rel=\"attachment wp-att-338\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/ta.onionmixer.net\/wordpress\/wp-content\/uploads\/2015\/08\/t_Dpsc_chapter05_mediator_01.jpg\" alt=\"t_Dpsc_chapter05_mediator_01\" width=\"800\" height=\"246\" class=\"alignnone size-full wp-image-338\" srcset=\"http:\/\/ta.onionmixer.net\/wordpress\/wp-content\/uploads\/2015\/08\/t_Dpsc_chapter05_mediator_01.jpg 800w, http:\/\/ta.onionmixer.net\/wordpress\/wp-content\/uploads\/2015\/08\/t_Dpsc_chapter05_mediator_01-480x148.jpg 480w, http:\/\/ta.onionmixer.net\/wordpress\/wp-content\/uploads\/2015\/08\/t_Dpsc_chapter05_mediator_01-300x92.jpg 300w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p>Mediator\ud328\ud134\uc740 \ud074\ub798\uc2a4\uc758 \uad6c\uc870\uc5d0 \ub300\ud55c \ud328\ud134\uc774\ub77c\uae30 \ubcf4\ub2e4\ub294 \ud504\ub85c\uadf8\ub7a8 \ub0b4\uc5d0\uc11c \uc774\ub8e8\uc5b4\uc9c0\ub294 \uc791\uc5c5\uc758 \uad6c\uc870\uc5d0 \ub300\ud55c \ud328\ud134\uc774\ub77c\ub294\uac8c \uc880 \ub354 \uba85\ud655\ud55c \uc124\uba85\uc774 \ub420 \uac83\uc774\ub2e4. \ub300\ubd80\ubd84\uc758 \ud328\ud134\uc774 \ud074\ub798\uc2a4\uc758 \ubc30\uce58\uc640 \uc778\ud130\ud398\uc774\uc2a4\uc5d0 \ub300\ud55c \ubb38\uc81c\ub97c \uc911\uc694\ud558\uac8c \ub2e4\ub8ec\ub2e4\uba74 Mediator\ud328\ud134\uc740 \uac1d\uccb4\ub4e4 \uc0ac\uc774\uc758 \uad00\uacc4\uc640 \uc791\uc5c5\uc744 \uc720\ubc1c\uc2dc\ud0a4\uace0, \uc778\uc2a4\ud134\uc2a4\ub4e4\uc744 \uc81c\uc5b4\ud558\ub294 \ubc29\ubc95\uc5d0 \ucd08\uc810\uc774 \ubc2a\ucd94\uc5b4\uc838 \uc788\ub2e4\ub294 \uac83\uc744 \uc720\ub150\ud574\uc57c \ud55c\ub2e4.<\/p>\n<p>\ub2e4\ub8e8\uc5b4\uc57c \ud558\ub294 \ud074\ub798\uc2a4 (\ub610\ub294 \uc778\uc2a4\ud134\uc2a4)\uac00 \uc5ec\ub7ec\uac1c\uac00 \uc788\uace0, \uc774\uac83\ub4e4\uc774 \uc11c\ub85c \uc9c1\uc811\uc801\uc778 \uc0c1\uad00\uad00\uacc4\ub294 \uc5c6\uc9c0\ub9cc, \ud504\ub85c\uadf8\ub7a8 \ub0b4\uc5d0\uc11c \ud544\uc694\uc5d0 \ub530\ub77c \ub290\uc2a8\ud55c \uacb0\ud569\uad00\uacc4\ub97c \uac00\uc9c0\uace0 \uc5b4\ub5a0\ud55c \uc774\ubca4\ud2b8\uc5d0 \uc5ec\ub7ec\uac1c\uc758 \uac1d\uccb4\uac00 \ubc18\uc751\ud574\uc57c \ud560 \ub54c, \uc774\ub807\uac8c \uc5ec\ub7ec\uac1c\uc758 \uac1d\uccb4\ub97c \ub9e4\ubc88 \uc77c\uc77c\ud788(\uac1c\ubcc4\ub85c)\uc81c\uc5b4\ud55c\ub2e4\ub294 \uac83\uc740 \ub9e4\uc6b0 \ubc88\uac70\ub85c\uc6b4 \uc791\uc5c5\uc774 \ub41c\ub2e4. \uc774\ub7f0\uacbd\uc6b0 Business Logic\uc5d0 \ub530\ub77c \uc77c\ub828\uc758 \uaddc\uce59\uc744 \uac00\uc9c0\uace0 \uc788\ub294 \ud074\ub798\uc2a4\ub97c \ub9cc\ub4e4\uc5b4\uc11c, \uc774\ub807\uac8c \ub9cc\ub4e4\uc5b4\uc9c4 \ud074\ub798\uc2a4\ub85c \ud558\uc5ec\uae08 \uaddc\uce59\uc5d0 \ub530\ub77c \ud544\uc694\ud55c \ub2e4\uc218\uc758 \uac1d\uccb4\ub97c \uc81c\uc5b4\ud55c\ub2e4\uba74 \ud3b8\ud558\uc9c0 \uc54a\uaca0\ub294\uac00? \uc774 \uac1c\ub150\uc744 \ud328\ud134\uc73c\ub85c \uc815\ub9ac\ud558\uba74 Mediator\ud328\ud134\uc774 \ub41c\ub2e4.<\/p>\n<p>\uc694\uc998 \ub300\ubd80\ubd84\uc758 RDBMS \uc5d4\uc9c4\uc744 \ubcf4\uba74 Trigger \uac1c\ub150\uc744 \uc9c0\uc6d0\ud558\uace0 \uc788\ub2e4. Database \ub0b4\uc758 \ud2b9\uc815 table \uc5d0 \ub300\ud574 \ud2b9\uc815 transaction\uc744 \uc870\uac74\uc73c\ub85c trigger\ub97c \uac78\uc5b4\uc11c, \ud574\ub2f9 table\uc5d0 \uc774\ubca4\ud2b8\uac00 \ubc1c\uc0dd\ub418\uc5c8\uc744 \ub54c \ubd80\uc218\uc801\uc778 \uc791\uc5c5\uc774 \uc9c4\ud589\ub418\ub3c4\ub85d \uc124\uc815\ud560 \uc218 \uc788\ub2e4. \uc774\ub807\uac8c \uc791\uc5c5\uc744 \ubbf8\ub9ac \uc900\ube44 \ud574 \ub193\uc73c\uba74 \uc791\uc5c5\uc790\ub294 \ucd94\uac00\uc801\uc778 \uace0\ubbfc\uc5c6\uc774 table\uc5d0 \ub300\ud55c \ud14c\uc774\ud130 \uc9c8\uc758\uc791\uc5c5\uc744 \uc9c4\ud589\ud558\uba74, \ud544\uc694\ud55c \ucd94\uac00\uc791\uc5c5\uc740 \uc790\ub3d9\uc73c\ub85c \ubbf8\ub9ac \uc900\ube44\ud574\ub193\uc740 \uaddc\uce59\uc5d0 \ub530\ub77c \uc21c\uc11c\ub300\ub85c \uc9c4\ud589 \ub420 \uac83\uc774\ub2e4. \uc77c\uc885\uc758 Mediator\ud328\ud134\uc758 \uac1c\ub150\uc73c\ub85c \ub3d9\uc791\ud558\ub294 \uc0ac\ub840\ub77c\uace0 \ubcfc \uc218 \uc788\uc9c0 \uc54a\uc744\uae4c?<\/p>\n<p>\uc55e\uc5e3 \uc124\uba85\ud55c\ub300\ub85c Mediator\ud328\ud134\uc740, \ud37c\uc0ac\ub4dc\uc758 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc815\uc758\ud558\uac70\ub098 \uaddc\uc81c\ud558\uae30\uc704\ud55c \ud328\ud134\uc740 \uc544\ub2c8\ub2e4. Mediator\ud074\ub798\uc2a4\uc758 \uc778\ud130\ud398\uc774\uc2a4\ub294 \uc791\uc5c5\uc790\uac00 \ud544\uc694\ud55c\ub300\ub85c \uacb0\uc815\ud558\uba74 \ub41c\ub2e4. \ub2e8 Mediator\ud074\ub798\uc2a4\uc758 \uad00\ub9ac\ub97c \ubc1b\uc544\uc57c \ud558\ub294 \uc0c1\ud669\uc758 \uc885\ub958\uac00 \ub9ce\uc544\uc9c4\ub2e4\uba74 \uc0c1\ud669\ubcc4\ub85c Mediator\ud074\ub798\uc2a4\ub97c \uc5ec\ub7ec\uac1c \ub9cc\ub4e4\uc5b4\uc57c \ud560 \ud544\uc694\uac00 \uc788\uc744\ud150\ub370(\ubb3c\ub860 \ud558\ub098\uc758 Mediator\uc5d0 \uba54\uc11c\ub4dc\ub97c \ub298\uc5ec\uc11c \ud574\uacb0\ud560 \uc218 \uc788\ub2e4) \uc774\ub7f0 \uacbd\uc6b0\ub77c\uba74 \ub77c\uc774\ube0c\ub7ec\ub9ac \ub0b4\uc5d0\uc11c \uacf5\ud1b5\uc73c\ub85c \uc0ac\uc6a9\ud560\ub9cc\ud55c \uba54\uc11c\ub4dc \uc778\ud130\ud398\uc774\uc2a4\ub97c Mediator\ucd94\uc0c1\ud074\ub798\uc2a4\ub85c \uc815\uc758\ud558\uace0, Mediator\ud558\uc704\ud074\ub798\uc2a4\uc5d0\uc11c\ub294 \uc0c1\ud669\ubcc4\ub85c \uad6c\uccb4\uc801\uc778 \uc791\uc5c5\uc744 \uad6c\ud604\ud558\ub294\uac83\ub3c4 \uc88b\uc740 \ubc29\ubc95\uc774\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mediator\ud328\ud134\uc740 \ud074\ub798\uc2a4\uc758 \uad6c\uc870\uc5d0 \ub300\ud55c \ud328\ud134\uc774\ub77c\uae30 \ubcf4\ub2e4\ub294 \ud504\ub85c\uadf8\ub7a8 \ub0b4\uc5d0\uc11c \uc774\ub8e8\uc5b4\uc9c0\ub294 \uc791\uc5c5\uc758 \uad6c\uc870\uc5d0 \ub300\ud55c \ud328\ud134\uc774\ub77c\ub294\uac8c \uc880 \ub354 \uba85\ud655\ud55c \uc124\uba85\uc774 \ub420 \uac83\uc774\ub2e4. \ub300\ubd80\ubd84\uc758 \ud328\ud134\uc774 \ud074\ub798\uc2a4\uc758 \ubc30\uce58\uc640 \uc778\ud130\ud398\uc774\uc2a4\uc5d0 \ub300\ud55c \ubb38\uc81c\ub97c \uc911\uc694\ud558\uac8c \ub2e4\ub8ec\ub2e4\uba74 Mediator\ud328\ud134\uc740 \uac1d\uccb4\ub4e4 \uc0ac\uc774\uc758 \uad00\uacc4\uc640 \uc791\uc5c5\uc744 \uc720\ubc1c\uc2dc\ud0a4\uace0, \uc778\uc2a4\ud134\uc2a4\ub4e4\uc744 \uc81c\uc5b4\ud558\ub294 \ubc29\ubc95\uc5d0 \ucd08\uc810\uc774 \ubc2a\ucd94\uc5b4\uc838 \uc788\ub2e4\ub294 \uac83\uc744 \uc720\ub150\ud574\uc57c \ud55c\ub2e4. \ub2e4\ub8e8\uc5b4\uc57c \ud558\ub294 \ud074\ub798\uc2a4 (\ub610\ub294 \uc778\uc2a4\ud134\uc2a4)\uac00 \uc5ec\ub7ec\uac1c\uac00 \uc788\uace0, \uc774\uac83\ub4e4\uc774 \uc11c\ub85c \uc9c1\uc811\uc801\uc778 \uc0c1\uad00\uad00\uacc4\ub294 \uc5c6\uc9c0\ub9cc, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[74],"tags":[],"_links":{"self":[{"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/337"}],"collection":[{"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=337"}],"version-history":[{"count":1,"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/337\/revisions"}],"predecessor-version":[{"id":339,"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/337\/revisions\/339"}],"wp:attachment":[{"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=337"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=337"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ta.onionmixer.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}