{"id":229,"date":"2014-12-16T17:38:22","date_gmt":"2014-12-16T17:38:21","guid":{"rendered":"https:\/\/www.couchbase.com\/blog\/why-couchbase-chose-rxjava-new-java-sdk\/"},"modified":"2014-12-16T17:38:22","modified_gmt":"2014-12-16T17:38:21","slug":"why-couchbase-chose-rxjava-new-java-sdk","status":"publish","type":"post","link":"https:\/\/www.couchbase.com\/blog\/ko\/why-couchbase-chose-rxjava-new-java-sdk\/","title":{"rendered":"\uc0c8\ub85c\uc6b4 \uc790\ubc14 SDK\ub97c \uc704\ud574 \uce74\uc6b0\uce58\ubca0\uc774\uc2a4\uac00 RxJava\ub97c \uc120\ud0dd\ud55c \uc774\uc720"},"content":{"rendered":"

\uc774 \ube14\ub85c\uadf8 \uac8c\uc2dc\ubb3c\uc740 \uc0c8\ub85c\uc6b4 Java SDK\uc758 \ud575\uc2ec \uad6c\uc131 \uc694\uc18c \uc911 \ud558\ub098\ub85c RxJava\ub97c \uc120\ud0dd\ud558\uac8c \ub41c \ubc30\uacbd\uacfc \ub3d9\uae30\ub97c \uc124\uba85\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub3d9\uae30\ubd80\uc5ec<\/h2>\n\n\n\n

API\ub97c \uc124\uacc4\ud558\ub294 \ubc29\ubc95\uc740 \ub9e4\uc6b0 \ub2e4\uc591\ud558\uba70, \uc800\ub9c8\ub2e4 \uace0\uc720\ud55c \uc7a5\uc810(\uacfc \ub2e8\uc810)\uc744 \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc644\uc804\ud788 \uc0c8\ub85c\uc6b4 API\ub97c \uc124\uacc4\ud558\ub294 \uacfc\uc815\uc5d0\uc11c \uc8fc\uc694 \uc9c8\ubb38 \uc911 \ud558\ub098\ub294 \uc774\ub97c \uc0ac\uc6a9\uc790\uc5d0\uac8c \uc5b4\ub5bb\uac8c \ub178\ucd9c\ud560 \uac83\uc778\uac00\uc600\uc2b5\ub2c8\ub2e4.\u00a0<\/p>\n\n\n\n

\uc6b0\ub9ac\uac00 \uc2a4\uc2a4\ub85c\uc5d0\uac8c \ubb3c\uc5b4\ubcfc \ud544\uc694\uac00 \uc5c6\uc5c8\ub358 \ud55c \uac00\uc9c0 \uc9c8\ubb38\uc740 \ubc14\ub85c \"\ub3d9\uae30\uc2dd\uc73c\ub85c \ud574\uc57c \ud560\uae4c, \uc544\ub2c8\uba74 \ube44\ub3d9\uae30\uc2dd\uc73c\ub85c \ud574\uc57c \ud560\uae4c?\"\uc600\uc2b5\ub2c8\ub2e4. \uc6b0\ub9ac\ub294 \ube44\ub3d9\uae30\uc2dd API\uac00 \ub9e4\uc6b0 \uc790\uc8fc \ud544\uc694\ub85c \ud558\ub294 \uc131\ub2a5\uacfc \ud655\uc7a5\uc131\uc744 \uc5bb\uc744 \uc218 \uc788\ub294 \uc720\uc77c\ud558\uace0\ub3c4 \ud0c0\ub2f9\ud55c \ubc29\ubc95\uc774\ub77c\uace0 \uad73\uac8c \ubbff\uc73c\uba70, \ub610\ud55c \ube44\ub3d9\uae30\uc5d0\uc11c \ub3d9\uae30\ub85c \uc804\ud658\ud558\ub294 \uac83\uc774 \uadf8 \ubc18\ub300\ubcf4\ub2e4 \ud6e8\uc52c \uc27d\uc2b5\ub2c8\ub2e4. \ud604\uc7ac \uc548\uc815 \ubc84\uc804\uc758 SDK(\uc774 \uae00\uc744 \uc791\uc131\ud558\ub294 \uc2dc\uc810 \uae30\uc900 1.4.3)\ub294 \ube44\ub3d9\uae30 \uc751\ub2f5\uc744 \uc81c\uacf5\ud558\uae30 \uc704\ud574 \uc774\ubbf8 \ub2e4\uc591\ud55c \ubc29\uc2dd\uc73c\ub85c Future\ub97c \uc801\uadf9\uc801\uc73c\ub85c \ud65c\uc6a9\ud558\uace0 \uc788\uc73c\uba70, \uc774\ub294 spymemcached\uac00 API\uc5d0 \ud574\ub2f9 \uac1c\ub150\uc744 \ucc98\uc74c \ub3c4\uc785\ud588\ub358 2006\/2007\ub144\uae4c\uc9c0 \uac70\uc2ac\ub7ec \uc62c\ub77c\uac11\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc790\ubc14\uc758 Future \uc778\ud130\ud398\uc774\uc2a4\uac00 (\uc2a4\uce7c\ub77c\uc758 future \uac19\uc740) \ub2e4\ub978 \uc194\ub8e8\uc158\ub4e4\uc5d0 \ube44\ud574 \ub9e4\uc6b0 \uc81c\ud55c\uc801\uc774\ub77c\ub294 \uac83\uc740 \uc798 \uc54c\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4. \uac8c\ub2e4\uac00 \ud558\ub098\uc758 \uc5f0\uc0b0\uc774 \ub2e4\ub978 \uc5f0\uc0ac\uc5d0 \uc758\uc874\ud558\uace0 \uc804\uccb4 \uacfc\uc815\uc744 \ube44\ub3d9\uae30\ub85c \uc720\uc9c0\ud558\uace0 \uc2f6\uc740 \ube44\ub3d9\uae30 \ub370\uc774\ud130 \ud50c\ub85c\uc6b0\ub97c \uad6c\ucd95\ud574\uc57c \ud558\ub294 \uacbd\uc6b0 \ucf54\ub529\ud558\uae30\uac00 \ub2e4\uc18c \ub354 \uae4c\ub2e4\ub85c\uc6cc\uc9d1\ub2c8\ub2e4. \ucd5c\uadfc \ubc84\uc804\uc5d0\uc11c\ub294 \ub9ac\uc2a4\ub108\uc5d0 \ub300\ud55c \uc9c0\uc6d0\uc744 \ucd94\uac00\ud558\uc5ec \uc0c1\ud669\uc774 \uaf64 \ub098\uc544\uc84c\uc9c0\ub9cc \uc5ec\uc804\ud788 \uc774\uc0c1\uc801\uc778 \uc194\ub8e8\uc158\uc740 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc9c0\ub09c \uba87 \ub144 \ub3d9\uc548, \uc6b0\ub9ac\ub294 \ubc00\uc811\ud558\uac8c \uc8fc\uc2dc\ud574 \uc628 \ub2e4\ub978 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub4e4\uacfc \ud328\ud134\ub4e4\uc774 \ub4f1\uc7a5\ud588\uc2b5\ub2c8\ub2e4. \uc131\uc219\ud55c \uac1c\ub150 \uc911 \ud558\ub098\ub294 \ub9c8\uc774\ud06c\ub85c\uc18c\ud504\ud2b8\uc640 .NET\uc5d0\uc11c \uc720\ub798\ud55c Reactive Extensions\ub85c \uc54c\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc774 \uc774\ubca4\ud2b8 \uc9c0\ud5a5\uc801\uc774\uc5b4\uc57c \ud558\uba70 \ube44\ub3d9\uae30 \ubc29\uc2dd\uc73c\ub85c \uadf8\ub7ec\ud55c \uc774\ubca4\ud2b8\uc5d0 \ubc18\uc751\ud574\uc57c \ud55c\ub2e4\ub294 \uc544\uc774\ub514\uc5b4\ub97c \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4. \uc774 \uac1c\ub150\uc740 \ub370\uc774\ud130\ub85c \ud560 \uc218 \uc788\ub294 \uc77c(\uc218\uc815, \uacb0\ud569, \ud544\ud130\ub9c1 \ub4f1)\uc5d0 \ub300\ud55c \ub9e4\uc6b0 \ud48d\ubd80\ud55c \uc5f0\uc0b0\uc790 \uc9d1\ud569\uc744 \uc815\uc758\ud569\ub2c8\ub2e4. \ucd5c\uadfc \ub137\ud50c\ub9ad\uc2a4\ub294 \uc774\ub97c \uc790\ubc14\ub85c \ud3ec\ud305\ud558\uc5ec RxJava\ub77c\ub294 \ubcc4\uce6d\uc744 \ubd99\uc600\uc2b5\ub2c8\ub2e4(\ud604\uc7ac \uc774 \ud504\ub85c\uc81d\ud2b8\ub294 \ub137\ud50c\ub9ad\uc2a4 \ub124\uc784\uc2a4\ud398\uc774\uc2a4 \ud558\uc5d0 \uc788\uc9c0\ub9cc, \uc870\ub9cc\uac04 \u201cio.reactivex\u201d\ub85c \uc774\ub3d9\ub420 \uc608\uc815\uc785\ub2c8\ub2e4). \uc774 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub294 \ub9e4\uc6b0 \uc548\uc815\uc801\uc774\uba70, \uc9c0\uc6d0 \ubc94\uc704\ub97c \ub113\ud788\ub824\ub294 \uc6b0\ub9ac\uc758 \uacc4\ud68d\uacfc\ub3c4 \uc798 \ubd80\ud569\ud558\ub294 \uc2a4\uce7c\ub77c, \uadf8\ub8e8\ube44, JRuby\uc640 \uac19\uc740 \ub2e4\ub978 JVM \uc5b8\uc5b4\uc6a9 \uc5b4\ub311\ud130\ub3c4 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\uac1c\ub150<\/h2>\n\n\n\n

Rx\uc758 \ud575\uc2ec \uc544\uc774\ub514\uc5b4\ub294 Observable\uacfc \uadf8 \uad00\ucc30\uc790(observer)\ub97c \uc911\uc2ec\uc73c\ub85c \ub3cc\uc544\uac11\ub2c8\ub2e4. \uc774 \uac1c\ub150\uc744 \uc811\ud574\ubcf4\uc9c0 \uc54a\uc558\ub2e4\uba74, Observable\uc744 Iterable\uc758 \ube44\ub3d9\uae30 \ubc0f \ud478\uc2dc \uae30\ubc18 \uc0ac\ucd0c(\ub610\ub294 \ub354 \uacf5\uc2dd\uc801\uc73c\ub85c\ub294 \uc30d\ub300(dual))\uc73c\ub85c \uc0dd\uac01\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub354 \uad6c\uccb4\uc801\uc73c\ub85c, \uc774\ub4e4\uc758 \uad00\uacc4\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n

\n\n\n\n\n\n\n
\uc774\ubca4\ud2b8<\/th>\n\uc774\ud130\ub7ec\ube14(\ud480)<\/th>\n\uc635\uc11c\ubc84\ube14 (\ud478\uc2dc)<\/th>\n<\/tr>\n<\/thead>\n
\ub370\uc774\ud130 \uac80\uc0c9<\/td>\nT \ub2e4\uc74c\uc5d0()<\/td>\nonNext(T)<\/td>\n<\/tr>\n
\uc624\ub958 \ubc1c\uacac<\/td>\n\uc608\uc678\ub97c \ub358\uc9c4\ub2e4<\/td>\nonError(\uc608\uc678)<\/td>\n<\/tr>\n
\uc644\ub8cc<\/td>\n\ubc18\ud488<\/td>\n\uc644\ub8cc\ub428()<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/figure>\n\n\n\n

\ub370\uc774\ud130\uac00 Observable\ub85c \ud478\uc2dc\ub420 \ub54c\ub9c8\ub2e4, \uad6c\ub3c5 \uc911\uc778 \ubaa8\ub4e0 observer\ub294 onNext() \uba54\uc11c\ub4dc\uc5d0\uc11c \ud574\ub2f9 \ub370\uc774\ud130\ub97c \ubc1b\uc2b5\ub2c8\ub2e4. Observable\uc774 \uacb0\uad6d \uc644\ub8cc\ub418\uba74 (\ud56d\uc0c1 \uadf8\ub7f0 \uac83\uc740 \uc544\ub2c8\uc9c0\ub9cc) onCompleted \uba54\uc11c\ub4dc\uac00 \ud638\ucd9c\ub429\ub2c8\ub2e4. \uc774\uc81c \ud504\ub85c\uc138\uc2a4 \uc911 \uc5b4\ub514\uc5d0\uc11c\ub4e0 \uc5d0\ub7ec\uac00 \ubc1c\uc0dd\ud558\uba74 onError \uba54\uc11c\ub4dc\uac00 \ud638\ucd9c\ub418\uba70, \ud574\ub2f9 Observable\uc740 \uc644\ub8cc\ub41c \uac83\uc73c\ub85c \uac04\uc8fc\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\ubb38\ubc95\uc744 \uc88b\uc544\ud558\uc2e0\ub2e4\uba74, \uacc4\uc57d\uc11c\ub294 \uc774\ub807\uac8c \uc0dd\uacbc\uc2b5\ub2c8\ub2e4:\u00a0<\/p>\n\n\n\n

OnNext* (OnCompleted | OnError)?<\/p>\n\n\n\n

\ud2b9\ud788 1\uac1c \ub610\ub294 N\uac1c\uc758 \ub370\uc774\ud130\uac00 \ubc18\ud658\ub418\ub294\uc9c0\uc5d0 \ub300\ud55c \uad6c\ubd84\uc774 \uc5c6\ub2e4\ub294 \uc810\uc744 \uba85\uc2dc\ud574 \ub450\uc138\uc694. \uc774\ub294 \ud638\ucd9c\ud558\ub294 \uba54\uc11c\ub4dc\uc640 \ud574\ub2f9 \ubb38\uc11c\uc5d0 \uae30\uc220\ub41c \ub0b4\uc6a9\uc744 \ud1b5\ud574 \uc790\uc5f0\uc2a4\ub7fd\uac8c \uc720\ucd94\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5b4\ucc28\ud53c \ud504\ub85c\uadf8\ub798\ubc0d \ud750\ub984\uc5d0\ub294 \ubcc0\ud654\uac00 \uc5c6\uc2b5\ub2c8\ub2e4. \uc870\uae08 \ucd94\uc0c1\uc801\uc774\ubbc0\ub85c \uad6c\uccb4\uc801\uc778 \uc608\uc2dc\ub97c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. CouchbaseCluster \ud074\ub798\uc2a4\uc5d0\ub294 \ud544\uc694\ud55c \ubaa8\ub4e0 \ub9ac\uc18c\uc2a4\ub97c \ucd08\uae30\ud654\ud55c \ub2e4\uc74c \uc791\uc5c5\ud560 \uc218 \uc788\ub294 Bucket \uc778\uc2a4\ud134\uc2a4\ub97c \ubc18\ud658\ud558\ub294 openBucket\uc774\ub77c\ub294 \uba54\uc11c\ub4dc\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc774\uc81c \uc18c\ucf13\uc744 \uc5f4\uace0, \uc124\uc815\uc744 \uac00\uc838\uc624\ub294 \ub4f1\uc758 \uc791\uc5c5\uc5d0\ub294 \ub2e4\uc18c \uc2dc\uac04\uc774 \uac78\ub9b4 \uc218 \uc788\uc73c\ubbc0\ub85c, \uc774\ub294 \uc644\ubcbd\ud55c \ud6c4\ubcf4\uac00 \ub429\ub2c8\ub2e4. \ube14\ub85c\ud0b9 API\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \ud615\ud0dc\ub97c \ub768 \uac83\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n

\uc778\ud130\ud398\uc774\uc2a4 Cluster {
\u00a0 \u00a0 \u00a0 \u00a0 Bucket openBucket(String name, String password);
}<\/p>\n\n\n\n

\uc5b4\ub5bb\uac8c \ube44\ub3d9\uae30\ub85c \ub9cc\ub4e4 \uc218 \uc788\uc744\uae4c\uc694? Observable\ub85c \uac10\uc2f8\uc57c \ud569\ub2c8\ub2e4:<\/p>\n\n\n\n

\uc778\ud130\ud398\uc774\uc2a4 Cluster {
\u00a0 \u00a0 \u00a0 \u00a0 \uad00\ucc30 \uac00\ub2a5\uc131<\/p>\n\n\n\n openBucket(String name, String password);
}<\/bucket>\n\n\n\n

\ub530\ub77c\uc11c \uc774\uc81c \uc6b0\ub9ac\ub294 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ubc84\ud0b7 \uc778\uc2a4\ud134\uc2a4\ub97c \uacb0\uad6d \ubc18\ud658\ud558\ub294 \uc635\uc800\ubc84\ube14\uc744 \ubc18\ud658\ud569\ub2c8\ub2e4. \uc635\uc800\ubc84\ub97c \ucd94\uac00\ud574 \ubd05\uc2dc\ub2e4:<\/p>\n\n\n\n

\ud074\ub7ec\uc2a4\ud130.\ubc84\ud0b7 \uc5f4\uae30<\/span>(<\/span>)<\/span>.\uad6c\ub3c5<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \uad00\ucc30\uc790\uc591\ub3d9\uc774<<\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 @Override
\u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \ubb34\ud6a8<\/span> \uc644\ub8cc\ub428(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \uc2dc\uc2a4\ud15c<\/span><\/a>.\ubc16\uc73c\ub85c<\/span>.println<\/span>(<\/span>\u201c\uc635\uc800\ubc84\ube14 \uc644\ub8cc!\u201d<\/span>)<\/span>;<\/span>
\u00a0 \u00a0 }<\/span>\n

\u00a0 \u00a0 @Override
\u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \ubb34\ud6a8<\/span> \uc624\ub958 \ubc1c\uc0dd \uc2dc(<\/span>\ub358\uc9c8 \uc218 \uc788\ub294 \uac83<\/span><\/a> e)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \uc2dc\uc2a4\ud15c<\/span><\/a>.\uc624\ub958<\/span>.println<\/span>(<\/span>\u201c\ubb34\uc5b8\uac00 \uc77c\uc5b4\ub0ac\ub2e4\u201d<\/span>)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 e.\uc2a4\ud0dd \ucd94\uc801 \ucd9c\ub825<\/span>(<\/span>)<\/span>;<\/span>
\u00a0 \u00a0 }<\/span><\/p>\n

\u00a0 \u00a0 @Override
\u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \ubb34\ud6a8<\/span> \ub2e4\uc74c(<\/span>\uc591\ub3d9\uc774 \uc591\ub3d9\uc774)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \uc2dc\uc2a4\ud15c<\/span><\/a>.\ubc16\uc73c\ub85c<\/span>.println<\/span>(<\/span>\u201c\ubc84\ud0b7 \uc218\uc2e0\ud568: \u201c<\/span> +<\/span> \uc591\ub3d9\uc774)<\/span>;<\/span>
\u00a0 \u00a0 }<\/span>
}<\/span>)<\/span>;<\/span><\/p><\/span><\/p>\n\n\n\n

\uc774\ub7ec\ud55c \uba54\uc11c\ub4dc\ub4e4\uc740 \ub2e4\ub978 \uc2a4\ub808\ub4dc\uc5d0\uc11c \ud638\ucd9c\ub418\ubbc0\ub85c, \ucf54\ub4dc\ub97c \uc774 \uc0c1\ud0dc\ub85c \ub450\uace0 \uba54\uc778 \uc2a4\ub808\ub4dc\ub97c \ubc14\ub85c \uc885\ub8cc\ud558\uba74 \uc544\ubb34\uac83\ub3c4 \ubcfc \uc218 \uc5c6\uc744 \uac83\uc785\ub2c8\ub2e4. \uc774\uc81c \ub098\uba38\uc9c0 \ubaa8\ub4e0 \ucf54\ub4dc\ub97c onNext \uba54\uc11c\ub4dc \uc548\uc5d0 \uc791\uc131\ud560 \uc218\ub3c4 \uc788\uc9c0\ub9cc, \uadf8\uac83\uc774 \uc544\ub9c8 \uac00\uc7a5 \uc88b\uc740 \ubc29\ubc95\uc740 \uc544\ub2d0 \uac83\uc785\ub2c8\ub2e4. \ubc84\ud0b7\uc740 \ub300\uac1c\u00a0
\ucc98\uc74c\ubd80\ud130 \uacf5\uac1c\ud558\uace0 \uc2f6\uc5c8\ub294\ub370, \uadf8\uac83\uc744 \ube14\ub85c\ud0b9\ud55c \ub4a4 \ub098\uba38\uc9c0 \ucf54\ub4dc\ub97c \uc9c4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubaa8\ub4e0 Observable\uc740 Iterable\ucc98\ub7fc \ub290\uaef4\uc9c0\ub294 \ube14\ub85c\ud0b9 Observable\ub85c \ubcc0\ud658\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\ube14\ub85c\ud0b9\uc624\ube14\uc800\ubc84\ube14<\/p>\n\n\n\n blockingObservable = cluster.openBucket().toBlocking();<\/bucket>\n\n\n\n

\uc218\uc2e0\ub41c \ub370\uc774\ud130\uc5d0 \ub300\ud574 \ube14\ub85c\ud0b9 \ubc29\uc2dd\uc73c\ub85c \ubc18\ubcf5 \uc791\uc5c5\uc744 \uc218\ud589\ud558\ub294 \uc5ec\ub7ec \uac00\uc9c0 \ubc29\ubc95\uc744 \ucc3e\uc744 \uc218 \uc788\uc9c0\ub9cc, \ub2e8 \ud558\ub098\uc758 \uac12\ub9cc \uc608\uc0c1\ub418\ub294 \uacbd\uc6b0(\uc6b0\ub9ac \uacbd\uc6b0\uac00 \ubc14\ub85c \uadf8\ub807\uc2b5\ub2c8\ub2e4) \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ub2e8\ucd95 \uba54\uc11c\ub4dc\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

Bucket bucket = cluster.openBucket().toBlocking().single();<\/p>\n\n\n\n

\uc5ec\uae30\uc11c \ub0b4\ubd80\uc801\uc73c\ub85c \uc77c\uc5b4\ub098\ub294 \uc77c\uc740 onNext\uc5d0\uc11c \ud638\ucd9c\ub41c \uac12\uc774 \uc6b0\ub9ac\ub97c \uc704\ud574 \uc800\uc7a5\ub418\uace0 onComplete\uac00 \ud638\ucd9c\ub418\uba74 \ud55c \ubc88 \ubc18\ud658\ub41c\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4. onError\uac00 \ud638\ucd9c\ub418\uba74 throwable\uc774 \uc9c1\uc811 \ub358\uc838\uc9c0\ubbc0\ub85c \uc774\ub97c \uc7a1\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

API \ud1b5\ud569<\/h2>\n\n\n\n

\uc774\uc81c \uc5ec\ub7ec\ubd84\uc774 \ubcf4\uc2e0 \uac83\uc740 \uc0c8\ubc1c\uc758 \ud53c\uc5d0 \ubd88\uacfc\ud569\ub2c8\ub2e4. \ubc84\ud0b7 \uac1c\ubc29 \uc5ed\uc2dc \ud4e8\ucc98(Future)\ub85c \ucc98\ub9ac\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \ud63c\uc790\uc11c\uc785\ub2c8\ub2e4. Observables\uac00 \uc9c4\uac00\ub97c \ubc1c\ud718\ud558\ub294 \ub54c\ub294 \ub458 \uc774\uc0c1\uc758 \uacb0\uacfc\uac12\uc774 \ubc18\ud658\ub418\ub294 \uacbd\uc6b0\ub97c \ub2e4\ub8e8\uc5b4\uc57c \ud560 \ub54c\uc774\uba70, \uc774 \uacbd\uc6b0 Future\ub294 \ub354 \uc774\uc0c1 \ubaa9\uc801\uc5d0 \ubd80\ud569\ud558\uc9c0 \uc54a\uc73c\uba70 \ubbf8\ub798\ub610\ub294 \uc774\uc640 \uc720\uc0ac\ud55c \uac83\uc740 \ub3d9\uc77c\ud55c \uacc4\uc57d\uc744 \uac16\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. Observable\uc740 \ub458 \uc774\uc0c1\uc758 T\uac00 \ubc18\ud658\ub420 \uc218 \uc788\uc74c\uc744 \uc554\uc2dc\ud558\ubbc0\ub85c, \ub54c\ub85c\ub294 \ud558\ub098\uc758 T\uac00 \ubc18\ud658\ub418\uace0 \ub54c\ub85c\ub294 \ub458 \uc774\uc0c1\uc758 T\uac00 \ubc18\ud658\ub418\ub354\ub77c\ub3c4 API\ub294 \ub3d9\uc77c\ud574 \ubcf4\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/collection><\/t><\/bucket><\/p>\n\n\n\n

\uad6c\uccb4\uc801\uc778 \uc608\ub97c \ub2e4\uc2dc \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. SDK\ub294 \ud558\ub098\uc758 \ubb38\uc11c\ub97c \ubc18\ud658\ud558\ub294 get \uba54\uc11c\ub4dc\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n

\uc778\ud130\ud398\uc774\uc2a4 Bucket {
\u00a0 \u00a0 \u00a0 \u00a0 \uad00\ucc30 \uac00\ub2a5\uc131<\/p>\n\n\n\n get(String id);
}<\/jsondocument>\n\n\n\n

\ud558\uc9c0\ub9cc \uc800\ud76c\ub294 \ub610\ud55c \ub450 \uac1c \uc774\uc0c1\uc758 \uacb0\uacfc(\ub610\ub294 \uacb0\uacfc\uac00 \uc804\ud600 \uc5c6\uc744 \uc218\ub3c4 \uc788\uc74c)\ub97c \uc7a0\uc7ac\uc801\uc73c\ub85c \ubc18\ud658\ud558\ub294 \ucffc\ub9ac(\ubdf0, N1QL)\ub3c4 \uc9c0\uc6d0\ud569\ub2c8\ub2e4. Observable \uacc4\uc57d \ub355\ubd84\uc5d0 \ub2e4\uc74c\uacfc \uac19\uc740 API\ub97c \uad6c\ucd95\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n

\uc778\ud130\ud398\uc774\uc2a4 Bucket {
\u00a0 \u00a0 \u00a0 \u00a0 \uad00\ucc30 \uac00\ub2a5\uc131<\/p>\n\n\n\n query(ViewQuery query);
}<\/viewresult>\n\n\n\n

\ubcf4\uc138\uc694? Observable\uc774 \uc5b4\ub5bb\uac8c \ub3d9\uc791\ud574\uc57c \ud558\ub294\uc9c0 \uc54c\uace0 \uc788\uae30 \ub54c\ubb38\uc5d0, \uacc4\uc57d\uc5d0\ub294 \uc554\ubb35\uc801\uc73c\ub85c \u201c\ucffc\ub9ac\ub97c \uc804\ub2ec\ud558\uba74 N\uac1c\uc758 ViewResults\ub97c \ub3cc\ub824\ubc1b\ub294\ub2e4\u201d\uace0 \uc801\ud600 \uc788\ub294 \uc148\uc785\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \ub354 \ud070 \uadf8\ub9bc\uc5d0\uc11c \ubcf4\uba74, \uc5ec\ub7ec\ubd84\uc774 \uae30\ub300\ud558\ub294 \ubc29\uc2dd\uc73c\ub85c \uc9c1\uad00\uc801\uc73c\ub85c \ub3d9\uc791\ud558\ub294 \uba54\uc11c\ub4dc\ub4e4\uc774 \ud6e8\uc52c \ub354 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc778\ud130\ud398\uc774\uc2a4<\/span> \uc591\ub3d9\uc774 {<\/span>
\u00a0 \u00a0 D \ud655\uc7a5\ud569\ub2c8\ub2e4<\/span> \ubb38\uc11c>><\/span> \uad00\ucc30 \uac00\ub2a5\uc131D<<\/span> \uc0bd\uc785\ud558\ub2e4(<\/span>D \ubb38\uc11c)<\/span>;<\/span>
\u00a0 \u00a0 D \ud655\uc7a5\ud569\ub2c8\ub2e4<\/span> \ubb38\uc11c>><\/span> \uad00\ucc30 \uac00\ub2a5\uc131D<<\/span> \uc5c5\uc11c\ud2b8(<\/span>D \ubb38\uc11c)<\/span>;<\/span>
\u00a0 \u00a0 D \ud655\uc7a5\ud569\ub2c8\ub2e4<\/span> \ubb38\uc11c>><\/span> \uad00\ucc30 \uac00\ub2a5\uc131D<<\/span> \uad50\uccb4\ud558\ub2e4(<\/span>D \ubb38\uc11c)<\/span>;<\/span>\n

\u00a0 \u00a0 \uad00\ucc30 \uac00\ub2a5\uc131\ubdf0 \uacb0\uacfc<<\/span> \uc9c8\uc758(<\/span>ViewQuery \ucffc\ub9ac)<\/span>;<\/span>
\u00a0 \u00a0 \uad00\ucc30 \uac00\ub2a5\uc131\uac80\uc0c9 \uacb0\uacfc<<\/span> \uc9c8\uc758(<\/span>\ucffc\ub9ac \ucffc\ub9ac)<\/span>;<\/span>
\u00a0 \u00a0 \uad00\ucc30 \uac00\ub2a5\uc131\uac80\uc0c9 \uacb0\uacfc<<\/span> \uc9c8\uc758(<\/span>\ubb38\uc790\uc5f4<\/span><\/a> \uc9c8\uc758)<\/span>;<\/span><\/span><\/span><\/span><\/p>\n

\u00a0 \u00a0 \uad00\ucc30 \uac00\ub2a5\uc131\ubd80\uc6b8<<\/span> \ube44\uc6b0\ub2e4(<\/span>)<\/span>;<\/span>
}<\/span><\/span><\/p><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n\n\n\n

\ub370\uc774\ud130\ud50c\ub85c\uc6b0\ub97c \ube44\ub3d9\uae30\ud654\ud574 \uc8fc\uc138\uc694!<\/h2>\n\n\n\n

\uc9c0\uae08\uae4c\uc9c0 \uc6b0\ub9ac\ub294 \uc635\uc800\ubc84\ube14\uc774 \ubb34\uc5c7\uc744 \ud560 \uc218 \uc788\ub294\uc9c0, \uadf8\ub9ac\uace0 \uacb0\ud569\ub825 \uc788\uace0 \ub2e8\uc21c\ud558\uba74\uc11c\ub3c4 \ube44\ub3d9\uae30\uc801\uc778 API\ub97c \uc81c\uacf5\ud558\ub294 \ub370 \uc5b4\ub5bb\uac8c \ub3c4\uc6c0\uc744 \uc8fc\ub294\uc9c0 \uc0b4\ud3b4\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc635\uc800\ubc84\ube14\uc740 \uc9c4\uc815\uc73c\ub85c \uadf8\ub4e4\uc758 \uc870\ud569 \uac00\ub2a5\uc131(composability) \uce21\uba74\uc5d0\uc11c \ube5b\uc744 \ubc1c\ud569\ub2c8\ub2e4. \uc635\uc800\ubc84\ube14\ub85c\ub294 \uc815\ub9d0 \ub9ce\uc740 \uac83\ub4e4\uc744 \ud560 \uc218 \uc788\uc73c\uba70, \uc774 \uac8c\uc2dc\ubb3c\uc5d0\uc11c \uadf8 \uc804\ubd80\ub97c \ub2e4 \ub2e4\ub8f0 \uc218\ub294 \uc5c6\uc2b5\ub2c8\ub2e4. RxJava\uc5d0\ub294 \uc5ec\uae30\uc5d0 \uc788\ub294 \uc544\uc8fc \ud6cc\ub96d\ud55c \ucc38\uace0 \ubb38\uc11c\uac00 \uc788\uc73c\ub2c8 \uaf2d \ud655\uc778\ud574 \ubcf4\uc138\uc694. \uc774 \ubb38\uc11c\ub294 \ube44\ub3d9\uae30 \ub370\uc774\ud130 \ud750\ub984\uc774 \uc5b4\ub5bb\uac8c \uc791\ub3d9\ud558\ub294\uc9c0 \ubcf4\uc5ec\uc8fc\uae30 \uc704\ud574 \ub9c8\ube14 \ub2e4\uc774\uc5b4\uadf8\ub7a8(marble diagram)\uc744 \uc0ac\uc6a9\ud558\uace0 \uc788\uc73c\uba70, \uc774\ub294 \uc6b0\ub9ac\ub3c4 \ud5a5\ud6c4 \ubb38\uc11c\uc758 \uc77c\ubd80\ub85c \uc81c\uacf5\ud558\uace0\uc790 \ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc2e4\uc6a9\uc801\uc778 \uc608\ub97c \ub4e4\uc5b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uce74\uc6b0\uce58\ubca0\uc774\uc2a4(\uc0ac\uc6a9\uc790 \uc138\ubd80 \uc815\ubcf4\uac00 \ud3ec\ud568\ub41c \uc644\uc804\ud55c JSON \uac1d\uccb4)\uc5d0\uc11c \ubb38\uc11c\ub97c \ub85c\ub4dc\ud558\ub824\uace0 \ud558\uc9c0\ub9cc, \ucf54\ub4dc \ub4b7\ubd80\ubd84\uc5d0\uc11c\ub294 \uc774\ub984(firstname)\ub9cc \uac00\uc9c0\uace0 \uc5b4\ub5a4 \uc791\uc5c5\uc744 \uc218\ud589\ud558\uace0 \uc2f6\uc740 \uc0c1\ud669\uc785\ub2c8\ub2e4. \uc774\ub54c map \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec JsonDocument\ub97c firstname \ubb38\uc790\uc5f4(String)\ub85c \ub9e4\ud551\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc591\ub3d9\uc774
\u00a0 \u00a0 .\uc5bb\ub2e4<\/span>(<\/span>\u201cuser::1\u201d<\/span>)<\/span>
\u00a0 \u00a0 .\uc9c0\ub3c4<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \ud568\uc2181JsonDocument, \ubb38\uc790\uc5f4<<\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 @Override
\u00a0 \u00a0 \u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \ubb38\uc790\uc5f4<\/span><\/a> \uc804\ud654(<\/span>JsonDocument jsonDocument)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \ubc18\ud658<\/span> JSON \ubb38\uc11c.\ucf58\ud150\uce20<\/span>(<\/span>)<\/span>.\ubb38\uc790\uc5f4\uac00\uc838\uc624\uae30<\/span>(<\/span>\u201c\uc774\ub984\u201d<\/span>)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>
\u00a0 \u00a0 }<\/span>)<\/span>
\u00a0 \u00a0 .\uad6c\ub3c5<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \ub3d9\uc791 1\ubb38\uc790\uc5f4<<\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 @Override
\u00a0 \u00a0 \u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \ubb34\ud6a8<\/span> \uc804\ud654(<\/span>\ubb38\uc790\uc5f4<\/span><\/a> \uc774\ub984)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \uc2dc\uc2a4\ud15c<\/span><\/a>.\ubc16\uc73c\ub85c<\/span>.println<\/span>(<\/span>\uc774\ub984)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>
\u00a0 \u00a0 }<\/span>)<\/span>;<\/span><\/span><\/span><\/p>\n\n\n\n

\uc5ec\uae30\uc5d0\ub294 \ub450 \uac00\uc9c0 \uc911\uc694\ud55c \uce21\uba74\uc774 \uc788\uc2b5\ub2c8\ub2e4: \uc5ec\uae30\uc5d0 \uccb4\uc778\uc73c\ub85c \uc5f0\uacb0\ub41c \ubaa8\ub4e0 \uba54\uc11c\ub4dc\ub3c4 \ube44\ub3d9\uae30\uc801\uc73c\ub85c \uc2e4\ud589\ub418\ubbc0\ub85c \uc6d0\ub798 \uc2a4\ub808\ub4dc\ub97c \ucc28\ub2e8\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uce74\uc6b0\uce58\ubca0\uc774\uc2a4(Couchbase)\uc5d0 \ub300\ud55c get \ud638\ucd9c\uc774 \ubc18\ud658\ub418\uba74 JSON \ubb38\uc11c\uc5d0\uc11c firstname\uc744 \ub9e4\ud551\ud55c \ub2e4\uc74c \ub9c8\uc9c0\ub9c9\uc73c\ub85c \ucd9c\ub825\ud569\ub2c8\ub2e4. \uc644\uc804\ud55c Observer\ub97c \uc81c\uacf5\ud560 \ud544\uc694\ub294 \uc5c6\uc2b5\ub2c8\ub2e4. onNext \uac12\uc5d0\ub9cc \uad00\uc2ec\uc774 \uc788\ub294 \uacbd\uc6b0 (\uc5ec\uae30\uc11c \ubcf4\uc5ec\uc900 \uac83\ucc98\ub7fc) \ud574\ub2f9 \uac12\ub9cc \uad6c\ud604\ud558\uba74 \ub429\ub2c8\ub2e4. \ub354 \ub9ce\uc740 \uc608\uc81c\ub294 \uc624\ubc84\ub85c\ub4dc\ub41c \uba54\uc11c\ub4dc\ub97c \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n

\ub610\ud55c \uc5ec\uae30\uc11c\ub294 \uc758\ub3c4\uc801\uc73c\ub85c Java 6\/7 \uc2a4\ud0c0\uc77c\uc758 \uc775\uba85 \ud074\ub798\uc2a4\ub97c \ubcf4\uc5ec\uc8fc\uace0 \uc788\ub2e4\ub294 \uc810\uc744 \ucc38\uace0\ud558\uc138\uc694. \uc800\ud76c\ub294 Java 8\ub3c4 \uc9c0\uc6d0\ud558\uc9c0\ub9cc, \uadf8\uc5d0 \ub300\ud574\uc11c\ub294 \ub098\uc911\uc5d0 \ub354 \ub2e4\ub8e8\uaca0\uc2b5\ub2c8\ub2e4. \uc790, \ub9cc\uc57d \uc774\ub984\uc774 \u201ca\u201d\ub85c \uc2dc\uc791\ud558\ub294 \uacbd\uc6b0\uc5d0\ub9cc \uc774\ub984\uc744 \ucd9c\ub825\ud558\uace0 \uc2f6\ub2e4\uba74 \uc774 \uccb4\uc778\uc744 \uc5b4\ub5bb\uac8c \ud655\uc7a5\ud560 \uc218 \uc788\uc744\uae4c\uc694?<\/p>\n\n\n\n

\uc591\ub3d9\uc774
\u00a0 \u00a0 .\uc5bb\ub2e4<\/span>(<\/span>\u201cuser::1\u201d<\/span>)<\/span>
\u00a0 \u00a0 .\uc9c0\ub3c4<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \ud568\uc2181JsonDocument, \ubb38\uc790\uc5f4<<\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 @Override
\u00a0 \u00a0 \u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \ubb38\uc790\uc5f4<\/span><\/a> \uc804\ud654(<\/span>JsonDocument jsonDocument)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \ubc18\ud658<\/span> JSON \ubb38\uc11c.\ucf58\ud150\uce20<\/span>(<\/span>)<\/span>.\ubb38\uc790\uc5f4\uac00\uc838\uc624\uae30<\/span>(<\/span>\u201c\uc774\ub984\u201d<\/span>)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>
\u00a0 \u00a0 }<\/span>)<\/span>
\u00a0 \u00a0 .\ud544\ud130<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \ud568\uc2181\ubb38\uc790\uc5f4<\/span><\/a>, \ubd80\uc6b8<<\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 @Override
\u00a0 \u00a0 \u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \ubd80\uc6b8<\/span><\/a> \uc804\ud654(<\/span>\ubb38\uc790\uc5f4<\/span><\/a> s)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \ubc18\ud658<\/span> s.\uc2dc\uc791\ud558\ub294<\/span>(<\/span>\u201ca\u201d<\/span>)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>
\u00a0 \u00a0 }<\/span>)<\/span>
\u00a0 \u00a0 .\uad6c\ub3c5<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \ub3d9\uc791 1\ubb38\uc790\uc5f4<<\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 @Override
\u00a0 \u00a0 \u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \ubb34\ud6a8<\/span> \uc804\ud654(<\/span>\ubb38\uc790\uc5f4<\/span><\/a> \uc774\ub984)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \uc2dc\uc2a4\ud15c<\/span><\/a>.\ubc16\uc73c\ub85c<\/span>.println<\/span>(<\/span>\uc774\ub984)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>
\u00a0 \u00a0 }<\/span>)<\/span>;<\/span><\/span><\/span><\/span><\/p>\n\n\n\n

\ubb3c\ub860 \ub2e8\uc21c\ud55c if\ubb38\uc73c\ub85c\ub3c4 \ucda9\ubd84\ud558\uaca0\uc9c0\ub9cc, \ud544\ud130\ub9c1\uc744 \uc704\ud55c \ucf54\ub4dc\uac00 \ud6e8\uc52c \ub354 \ubcf5\uc7a1\ud574\uc9c8 \uc218 \uc788\uc73c\uba70 (\uc544\ub9c8\ub3c4 \ub2e4\ub978 \ubb54\uac00\ub97c \ud638\ucd9c\ud560 \uc218\ub3c4 \uc788\uc74c) \uc0c1\uc0c1\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc635\uc800\ubc84\ube14 \ubcc0\ud658\uc5d0 \ub300\ud55c \ub9c8\uc9c0\ub9c9 \uc608\uc81c\ub85c, \uc6b0\ub9ac\ub294 \ub9e4\uc6b0 \uc790\uc8fc \ubc1c\uc0dd\ud558\ub294 \uc791\uc5c5\uc744 \uc218\ud589\ud560 \uac83\uc785\ub2c8\ub2e4: \ubb38\uc11c\ub97c \ub85c\ub4dc\ud558\uace0, \uadf8 \ub0b4\uc6a9\uc744 \uc218\uc815\ud55c \ub2e4\uc74c, \ub2e4\uc2dc \uce74\uc6b0\uce58\ubca0\uc774\uc2a4(Couchbase)\uc5d0 \uc800\uc7a5\ud558\ub294 \uac83\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n

\uc591\ub3d9\uc774
\u00a0 \u00a0 .\uc5bb\ub2e4<\/span>(<\/span>\u201cuser::1\u201d<\/span>)<\/span>
\u00a0 \u00a0 .\uc9c0\ub3c4<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \ud568\uc2181JsonDocument, JsonDocument<<\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 @Override
\u00a0 \u00a0 \u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> JsonDocument \ud638\ucd9c(<\/span>JsonDocument \uc6d0\ubcf8)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \uc6d0\ubcf8.\ucf58\ud150\uce20<\/span>(<\/span>)<\/span>.\ub123\ub2e4<\/span>(<\/span>\u201c\uc774\ub984\u201d<\/span>, \u201cSomethingElse\u201d<\/span>)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \ubc18\ud658<\/span> \uc624\ub9ac\uc9c0\ub110;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>
\u00a0 \u00a0 }<\/span>)<\/span>
\u00a0 \u00a0 .\ud50c\ub7ab\ub9f5<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \ud568\uc2181JsonDocument, ObservableJsonDocument>><\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 @Override
\u00a0 \u00a0 \u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> \uad00\ucc30 \uac00\ub2a5\uc131JsonDocument<<\/span> \uc804\ud654(<\/span>JsonDocument\uac00 \uc218\uc815\ub418\uc5c8\uc2b5\ub2c8\ub2e4)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \ubc18\ud658<\/span> \uc591\ub3d9\uc774.\uad50\uccb4\ud558\ub2e4<\/span>(<\/span>\uc218\uc815\ub428)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>
\u00a0 \u00a0 }<\/span>)<\/span>.\uad6c\ub3c5<\/span>(<\/span>)<\/span>;<\/span><\/span><\/span><\/span><\/span><\/p>\n\n\n\n

FlatMap\uc740 map\uacfc \ub9e4\uc6b0 \uc720\uc0ac\ud558\uac8c \ub3d9\uc791\ud558\uba70, \ucc28\uc774\uc810\uc740 \uc790\uccb4\uc801\uc73c\ub85c Observable\uc744 \ubc18\ud658\ud558\ubbc0\ub85c \ube44\ub3d9\uae30 \uc791\uc5c5\uc744 \ub9e4\ud551\ud558\ub294 \ub370 \uc644\ubcbd\ud558\uac8c \uc801\ud569\ud558\ub2e4\ub294 \uc810\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub610 \ub2e4\ub978 \uce21\uba74\uc740 Observable\uc744 \uc0ac\uc6a9\ud558\uba74 \uc815\uad50\ud55c \uc5d0\ub7ec \ucc98\ub9ac\ub97c \uc190\uc27d\uac8c \ud560 \uc218 \uc788\ub2e4\ub294 \uc810\uc785\ub2c8\ub2e4. 2\ucd08\uc758 \ud0c0\uc784\uc544\uc6c3\uc744 \uc801\uc6a9\ud558\uace0 \ud638\ucd9c\uc774 \ubc18\ud658\ub418\uc9c0 \uc54a\uc73c\uba74 \ub300\uc2e0 \ub2e4\ub978 \uac83\uc744 \ubc18\ud658\ud558\ub294 \uc608\uc81c\ub97c \uad6c\ud604\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc591\ub3d9\uc774
\u00a0 \u00a0 .\uc5bb\ub2e4<\/span>(<\/span>\u201cuser::1\u201d<\/span>)<\/span>
\u00a0 \u00a0 .\uc2dc\uac04 \ucd08\uacfc<\/span>(<\/span>2<\/span>, TimeUnit.\ucd08<\/span>)<\/span>
\u00a0 \u00a0 .onErrorReturn<\/span>(<\/span>\uc0c8\ub85c\uc6b4<\/span> \ud568\uc2181\ub358\uc9c8 \uc218 \uc788\ub294 \uac83<\/span><\/a>, JsonDocument<<\/span>(<\/span>)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 @Override
\u00a0 \u00a0 \u00a0 \u00a0 \uacf5\uacf5\uc758<\/span> JsonDocument \ud638\ucd9c(<\/span>\ub358\uc9c8 \uc218 \uc788\ub294 \uac83<\/span><\/a> \ub358\uc9c8 \uc218 \uc788\ub294)<\/span> {<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \ubc18\ud658<\/span> JsonDocument.\ub9cc\ub4e4\ub2e4<\/span>(<\/span>\u201cuser::anonymous\u201d<\/span>, JsonObject.\ube44\uc5b4 \uc788\uc74c<\/span>(<\/span>)<\/span>.\ub123\ub2e4<\/span>(<\/span>\u201c\uc774\ub984\u201d<\/span>, \u201c\uc874 \ub3c4\u201d<\/span>)<\/span>)<\/span>;<\/span>
\u00a0 \u00a0 \u00a0 \u00a0 }<\/span>
\u00a0 \u00a0 }<\/span>)<\/span>;<\/span><\/span><\/p>\n\n\n\n

\uc5ec\uae30\uc11c get \ud638\ucd9c\uc774 2\ucd08 \uc548\uc5d0 \ubc18\ud658\ub418\uc9c0 \uc54a\uc73c\uba74 (\uc608\uc81c\ub97c \uc704\ud574 \ud569\ub9ac\uc801\uc778 \uae30\ubcf8\uac12\uc744 \uac00\uc815\ud558\ub294) \ub354\ubbf8 \ubb38\uc11c\uac00 \ubc18\ud658\ub429\ub2c8\ub2e4. \uc774\uac83\uc740 \ub2e8\uc21c\ud55c \uc608\uc2dc\uc77c \ubfd0\uc774\uc9c0\ub9cc, \uc7ac\uc2dc\ub3c4, \ub2e4\ub978 \uc635\uc800\ubc84\ube14(Observable)\ub85c\uc758 \ubd84\uae30 \ub4f1 \uc608\uc678\ub97c \ud65c\uc6a9\ud574 \ub9ce\uc740 \uac83\uc744 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc62c\ubc14\ub978 \uc0ac\uc6a9\ubc95\uc740 \uacf5\uc2dd \ubb38\uc11c(\ubc0f Rx \ubb38\uc11c)\ub97c\ucc38\uace0\ud558\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc7a0\uae50, \ub354 \uc788\uc2b5\ub2c8\ub2e4<\/h2>\n\n\n\n

\uc11c\ub85c \ub2e4\ub978 \uc635\uc800\ubc84\ube14\uc758 \uacb0\ud569(\ubcd1\ud569, \uc9c0\ud551, \uc5f0\uacb0), \uc2dc\uac04 \uac04\uaca9\uc5d0 \ub530\ub978 \uacb0\uacfc \uc77c\uad04 \ucc98\ub9ac, \ubd80\uc218 \ud6a8\uacfc \uc218\ud589 \ub4f1 \ud6e8\uc52c \ub354 \ub9ce\uc740 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac1c\ub150\uc744 \uc774\ud574\ud558\ub294 \ucd08\uae30(\uc791\uc740) \ub09c\uad00\uc744 \ub118\uc5b4\uc11c\uace0 \ub098\uba74 \ub9e4\uc6b0 \uc790\uc5f0\uc2a4\ub7fd\uac8c \ub290\uaef4\uc9c0\uba70, \ub2e4\uc2dc\ub294 \ub3cc\uc544\uac00\uace0 \uc2f6\uc9c0 \uc54a\uc744 \uac83\uc774\ub77c\uace0 \uc57d\uc18d\ub4dc\ub9bd\ub2c8\ub2e4(\ub9cc\uc57d \uc800\ud76c\uac00 \ud2c0\ub838\ub2e4\uba74, \uc5b8\uc81c\ub4e0\uc9c0 \uc635\uc800\ubc84\ube14\uc744 \ube14\ub85c\ud0b9\ud558\uac70\ub098 \ud4e8\ucc98\ub85c \ubcc0\ud658\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4).<\/p>\n\n\n\n

RxJava\ub294 \ud6cc\ub96d\ud55c Java 8 \uc9c0\uc6d0 \uae30\ub2a5\ub3c4 \uac16\ucd94\uace0 \uc788\uc73c\ubbc0\ub85c, \uc774\ubbf8 \ud504\ub85c\uc81d\ud2b8\uc5d0\uc11c \uc774\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ud589\uc6b4\uc544\ub77c\uba74 \uc704\uc758 \uc608\uc81c\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \ub2e8\uc21c\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc591\ub3d9\uc774
\u00a0 \u00a0 .get(\u201cuser::1\u201d)
\u00a0 \u00a0 .map(jsonDocument -> jsonDocument.content().getString(“firstname”))
\u00a0 \u00a0 .filter(s -> s.startsWith(“a”))
\u00a0 \u00a0 .subscribe(System.out::println);<\/p>\n\n\n\n

\uba4b\uc9c0\uc8e0? RxJava\ub294 \uadf8 \uc704\uc5d0 \ub2e4\uc591\ud55c \uc5b8\uc5b4 \uc5b4\ub311\ud130\ub3c4 \uc81c\uacf5\ud558\ub294\ub370, \uc774 \uae00\uc744 \uc791\uc131\ud558\ub294 \uc2dc\uc810 \uae30\uc900\uc73c\ub85c Scala, Clojure, Groovy, JRuby, Kotlin\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uc5b4\ub311\ud130\ub4e4\uc744 \uc0ac\uc6a9\ud558\uba74 \ub354\uc6b1 \uc5b8\uc5b4\uc5d0 \ud2b9\ud654\ub41c \ud1b5\ud569\uc744 \uc81c\uacf5\ud560 \uc218 \uc788\uc73c\uba70, \uc218\uc694\uac00 \uc0dd\uae30\ub294 \ub300\ub85c \uac01 \uc5b8\uc5b4\ubcc4 Couchbase \uc9c0\uc6d0\uc744 \uac15\ud654\ud558\uae30 \uc704\ud574 \uc774 \uc911 \uc77c\ubd80\ub97c \ud65c\uc6a9\ud560 \uacc4\ud68d\uc785\ub2c8\ub2e4. \uc790\ubc14 SDK\ub97c \uc81c\uc678\ud558\uace0 \uc6b0\ub9ac\uc758 \ucd5c\uc6b0\uc120 \uc21c\uc704\ub294 \ub2e8\uc5f0\ucf54 \uc2a4\uce7c\ub77c(Scala)\uc774\ubbc0\ub85c, \uc870\ub9cc\uac04 \uc788\uc744 \uad00\ub828 \ubc1c\ud45c\ub4e4\uc744 \uae30\ub300\ud574 \uc8fc\uc138\uc694!<\/p>\n\n\n\n

\uc774\uc81c \uc800\ud76c\ub9cc\ud07c \uae30\ub300\uac00 \ud06c\uc2dc\uae30\ub97c \ubc14\ub77c\uba70, \ud3c9\uc18c \uc18c\ud1b5 \ucc44\ub110\uc744 \ud1b5\ud574 \ud53c\ub4dc\ubc31\uacfc \uc9c8\ubb38\uc744 \ubcf4\ub0b4\uc8fc\uc2dc\uae30\ub97c \uae30\ub300\ud569\ub2c8\ub2e4!<\/p>","protected":false},"excerpt":{"rendered":"

This blog post explains our reasoning and motivation behind choosing RxJava as one of the integral components in our new Java SDK. Motivation There are many ways to design an API and every one has its own set of benefits (and drawbacks). In the process of designing our brand new APIs one of the main […]<\/p>\n","protected":false},"author":19,"featured_media":18,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_acf":"","footnotes":""},"categories":[1],"tags":[],"ppma_author":[29],"class_list":["post-229","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"\nWhy Couchbase chose RxJava for the new Java SDK - The Couchbase Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.couchbase.com\/blog\/ko\/why-couchbase-chose-rxjava-new-java-sdk\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Couchbase chose RxJava for the new Java SDK\" \/>\n<meta property=\"og:description\" content=\"This blog post explains our reasoning and motivation behind choosing RxJava as one of the integral components in our new Java SDK. 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