{"id":47516,"date":"2023-10-30T03:51:48","date_gmt":"2023-04-26T07:30:27","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8graphql%e4%b8%ad%ef%bc%8c%e9%80%9a%e8%bf%87oneof%e6%8c%87%e4%bb%a4%e6%9d%a5%e8%a1%a8%e7%a4%bainput%e7%b1%bb%e5%9e%8b%e7%9a%84union%e3%80%82\/"},"modified":"2024-05-04T06:39:50","modified_gmt":"2024-05-03T22:39:50","slug":"%e5%9c%a8graphql%e4%b8%ad%ef%bc%8c%e9%80%9a%e8%bf%87oneof%e6%8c%87%e4%bb%a4%e6%9d%a5%e8%a1%a8%e7%a4%bainput%e7%b1%bb%e5%9e%8b%e7%9a%84union%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8graphql%e4%b8%ad%ef%bc%8c%e9%80%9a%e8%bf%87oneof%e6%8c%87%e4%bb%a4%e6%9d%a5%e8%a1%a8%e7%a4%bainput%e7%b1%bb%e5%9e%8b%e7%9a%84union%e3%80%82\/","title":{"rendered":"\u5728GraphQL\u4e2d\uff0c\u901a\u8fc7@oneOf\u6307\u4ee4\u6765\u8868\u793ainput\u7c7b\u578b\u7684union"},"content":{"rendered":"

@oneOf \u6307\u4ee4\u662f\u4ec0\u4e48<\/h1>\n

@oneOf \u662f\u4e00\u4e2a\u6307\u4ee4\uff0c\u7528\u4e8e\u8868\u8fbe input \u7c7b\u578b\u4e2d\u7684\u5b57\u6bb5\u5fc5\u987b\u9009\u62e9\u5176\u4e2d\u4e00\u4e2a\u7684\u8981\u6c42\u3002<\/p>\n

\u5982\u679c\u4f60\u52aa\u529b\u5b9e\u73b0\u5b9a\u5236\u6307\u4ee4\u7684\u8bdd\uff0c\u662f\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e2a\u7684\u2026\u2026\u6211\u60f3\u95ee\u95ee\u4f60\uff01\u5176\u5b9e\u8fd9\u4e2a\u6b63\u597d\u662f GraphQL \u5b98\u65b9\u89c4\u8303\u4e2d\u5373\u5c06\u5408\u5e76\u7684\u6307\u4ee4\u3002<\/p>\n

 <\/p>\n

\u6700\u521d\uff0cGraphQL \u4e2d\u539f\u672c\u5c31\u6709 union\uff0c\u53ef\u4ee5\u5728 API \u4e0a\u8868\u793a\u53ea\u8fd4\u56de\u201c\u4efb\u610f\u4e00\u79cd\u7c7b\u578b\u201d\u7684\u8f93\u51fa\uff0c\u4f46\u5bf9\u4e8e\u8f93\u5165\u5374\u6ca1\u6709\u8868\u8fbe\u7684\u65b9\u6cd5\u3002
\n\u901a\u8fc7 @oneOf \u6307\u4ee4\uff0c\u8fd9\u6210\u4e3a\u53ef\u80fd\uff01<\/p>\n

\u4f7f\u7528\u793a\u4f8b<\/h1>\n

\u4ee5\u4e0b\u662f\u5e94\u7528\u4e86 @oneOf \u7684\u7528\u6237\u641c\u7d22API\u7684\u793a\u4f8b\u3002
\n\u5f53\u5728\u641c\u7d22\u6761\u4ef6\u4e2d\u4f7f\u7528 input \u6307\u5b9a FindUserCondition \u65f6\uff0c\u8868\u793a id \u5b57\u6bb5\u6216 nameContaining \u5b57\u6bb5\u5fc5\u987b\u6307\u5b9a\u975e\u7a7a\u503c\u3002<\/p>\n

directive<\/span> @oneOf<\/span> on<\/span> INPUT_OBJECT<\/span>\r\n\r\ninput<\/span> FindUserCondition<\/span> @<\/span>oneOf<\/span> {<\/span> # <--- \u3053\u3053\u3067 \"oneOf\" \u6307\u5b9a<\/span>\r\n  # \u30e6\u30fc\u30b6\u3092 ID \u6307\u5b9a\u3067\u691c\u7d22\u3059\u308b\u5834\u5408\u306b\u6307\u5b9a\u3059\u308b<\/span>\r\n  id<\/span>:<\/span> ID<\/span>\r\n\r\n  # \u30e6\u30fc\u30b6\u3092\u3001\u540d\u524d\u306e\u90e8\u5206\u4e00\u81f4\u3067\u691c\u7d22\u3059\u308b\u5834\u5408\u306b\u6307\u5b9a\u3059\u308b<\/span>\r\n  nameContaining<\/span>:<\/span> String<\/span>\r\n}<\/span>\r\n\r\ntype<\/span> Query<\/span> {<\/span>\r\n  # \u30e6\u30fc\u30b6\u3092\u691c\u7d22\u3059\u308b<\/span>\r\n  findUser<\/span>(<\/span>by<\/span>:<\/span> FindUserCondition<\/span>!):<\/span> [<\/span>User<\/span>!]!<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4e00\u4e2a\u6709\u6548\u7684\u67e5\u8be2\u793a\u4f8b\u3002<\/p>\n
query<\/span> q1<\/span> {<\/span>\r\n  findUser<\/span>(<\/span>by<\/span>:<\/span> {<\/span>\r\n    id<\/span>:<\/span> \"u1\"<\/span>\r\n  })<\/span> {<\/span>\r\n    id<\/span>\r\n    name<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4ee5\u4e0b\u7684\u89c4\u5b9a\u5c06\u5f15\u53d1\u9519\u8bef\u3002
\n\u5173\u4e8e\u65e0\u6548\u7684\u89c4\u5b9a\u6a21\u5f0f\uff0c\u5728\u524d\u8ff0\u7684 PR \u4e2d\u5df2\u7ecf\u5217\u51fa\u3002<\/p>\n
query<\/span> error1<\/span> {<\/span>\r\n  findUser<\/span>(<\/span>by<\/span>:<\/span> {<\/span>\r\n    # NG: 2 \u3064\u4ee5\u4e0a\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u540c\u6642\u306b\u6307\u5b9a\u3057\u3066\u3044\u308b<\/span>\r\n    id<\/span>:<\/span> \"1\"<\/span>\r\n    nameContaining<\/span>:<\/span> \"foo\"<\/span>\r\n  })<\/span> {<\/span>\r\n    id<\/span>\r\n    name<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\nquery<\/span> error2<\/span> {<\/span>\r\n  findUser<\/span>(<\/span>by<\/span>:<\/span> {<\/span>\r\n    # NG: \u6307\u5b9a\u3057\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u306f 1 \u3064\u3060\u304c\u5024\u304c null<\/span>\r\n    id<\/span>:<\/span> null<\/span>\r\n  })<\/span> {<\/span>\r\n    id<\/span>\r\n    name<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\nquery<\/span> error3<\/span> {<\/span>\r\n  findUser<\/span>(<\/span>by<\/span>:<\/span> {<\/span>\r\n    # NG: \u4e00\u898b nameContaining \u304c\u6709\u52b9\u305d\u3046\u306b\u898b\u3048\u308b\u304c\u3001\u3053\u306e\u6307\u5b9a\u65b9\u6cd5\u306f\u30c0\u30e1<\/span>\r\n    id<\/span>:<\/span> null<\/span>\r\n    nameContaining<\/span>:<\/span> \"foo\"<\/span>\r\n  })<\/span> {<\/span>\r\n    id<\/span>\r\n    name<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4f60\u80fd\u7528\u4e86\u5417\uff1f<\/h1>\n
\u8fd9\u4e00\u6b21\u6211\u6b63\u5728\u5347\u7ea7 spring-graphql \u7684\u7248\u672c\u65f6\u6ce8\u610f\u5230\uff0c\u6839\u636e\u6211\u7684\u89c2\u5bdf\u8303\u56f4\uff0c\u81f3\u5c11\u4ee5\u4e0b\u7684\u5b9e\u73b0\u4e2d\uff08\u6709\u4e9b\u751a\u81f3\u662f\u4ece\u76f8\u5f53\u65e9\u4e4b\u524d\u5f00\u59cb\uff09\uff0c\u90fd\u5305\u542b\u4e86 @oneOf\u3002<\/p>\n
    \n
  • \n
      graphql-java (v21.2)<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          graphql-ruby (v2.0.14)<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            graphql-js (v17.0.0-alpha.3)<\/ul>\n
            \u5c1d\u8bd5\u5728 spring-graphql \u4e2d\u4f7f\u7528 @oneOf<\/h1>\n
            \u4e3a\u4e86\u505a\u5230\u8fd9\u4e00\u70b9\uff0c\u6211\u6253\u7b97\u4f7f\u7528 Spring GraphQL \u5b9e\u73b0 API\uff0c\u5e76\u4f7f\u7528 @oneOf \u6307\u4ee4\u8fdb\u884c\u7f16\u7801\u3002
            \n\u5b8c\u6574\u7684\u4ee3\u7801\u53ef\u4ee5\u5728 GitHub \u4e0a\u627e\u5230\u3002<\/p>\n
            \u9996\u5148\uff0c\u4eceSDL\u5f00\u59cb\u3002<\/p>\n
            directive<\/span> @oneOf<\/span> on<\/span> INPUT_OBJECT<\/span>\r\n\r\ntype<\/span> User<\/span> {<\/span>\r\n  id<\/span>:<\/span> ID<\/span>!<\/span>\r\n  name<\/span>:<\/span> String<\/span>!<\/span>\r\n}<\/span>\r\ninput<\/span> FindUserCondition<\/span> @<\/span>oneOf<\/span> {<\/span>\r\n  id<\/span>:<\/span> ID<\/span>\r\n  nameContaining<\/span>:<\/span> String<\/span>\r\n}<\/span>\r\ntype<\/span> Query<\/span> {<\/span>\r\n  findUser<\/span>(<\/span>by<\/span>:<\/span> FindUserCondition<\/span>!):<\/span> [<\/span>User<\/span>!]!<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
            \u63a5\u4e0b\u6765\u662f\u63a7\u5236\u5668\u65b9\u9762\u3002<\/p>\n
            @Controller<\/span>\r\npublic<\/span> class<\/span> UserController<\/span> {<\/span>\r\n\r\n  private<\/span> final<\/span> List<\/span><<\/span>User<\/span>><\/span> users<\/span>;<\/span>\r\n\r\n  public<\/span> UserController<\/span>()<\/span> {<\/span>\r\n    List<\/span><<\/span>User<\/span>><\/span> users<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\n    users<\/span>.<\/span>add<\/span>(<\/span>new<\/span> User<\/span>(<\/span>\"u1\"<\/span>,<\/span> \"taro\"<\/span>));<\/span>\r\n    users<\/span>.<\/span>add<\/span>(<\/span>new<\/span> User<\/span>(<\/span>\"u2\"<\/span>,<\/span> \"jiro\"<\/span>));<\/span>\r\n    users<\/span>.<\/span>add<\/span>(<\/span>new<\/span> User<\/span>(<\/span>\"u3\"<\/span>,<\/span> \"saburo\"<\/span>));<\/span>\r\n    this<\/span>.<\/span>users<\/span> =<\/span> users<\/span>;<\/span>\r\n  }<\/span>\r\n\r\n  @QueryMapping<\/span>\r\n  public<\/span> Flux<\/span><<\/span>User<\/span>><\/span> findUser<\/span>(<\/span>@Argument<\/span>(<\/span>\"by\"<\/span>)<\/span> FindUserCondition<\/span> condition<\/span>)<\/span> {<\/span>\r\n    Predicate<\/span><<\/span>User<\/span>><\/span> filter<\/span>;<\/span>\r\n    if<\/span> (<\/span>condition<\/span>.<\/span>id<\/span>()<\/span> !=<\/span> null<\/span>)<\/span> {<\/span>\r\n      filter<\/span> =<\/span> u<\/span> -><\/span> u<\/span>.<\/span>id<\/span>().<\/span>equals<\/span>(<\/span>condition<\/span>.<\/span>id<\/span>());<\/span>\r\n    }<\/span> else<\/span> if<\/span> (<\/span>condition<\/span>.<\/span>nameContaining<\/span>()<\/span> !=<\/span> null<\/span>)<\/span> {<\/span>\r\n      filter<\/span> =<\/span> u<\/span> -><\/span> u<\/span>.<\/span>name<\/span>().<\/span>contains<\/span>(<\/span>condition<\/span>.<\/span>nameContaining<\/span>());<\/span>\r\n    }<\/span> else<\/span> {<\/span>\r\n      throw<\/span> new<\/span> IllegalStateException<\/span>();<\/span>\r\n    }<\/span>\r\n    return<\/span> Flux<\/span>.<\/span>fromStream<\/span>(<\/span>users<\/span>.<\/span>stream<\/span>().<\/span>filter<\/span>(<\/span>filter<\/span>));<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
            \u8ba9\u6211\u52a8\u4e00\u52a8\u8bd5\u8bd5<\/h1>\n
            \u6b63\u5e38\u7cfb x\u00ec)<\/h2>\n
              \n
            • \n
                \u30ea\u30af\u30a8\u30b9\u30c8<\/ul>\n<\/li>\n<\/ul>\n
                 <\/p>\n
                  \n
                • \n
                    query findUser {<\/ul>\n<\/li>\n<\/ul>\n
                     <\/p>\n
                      \n
                    • \n
                        findUser(by: {<\/ul>\n<\/li>\n<\/ul>\n
                         <\/p>\n
                          \n
                        • \n
                            id: “u1”<\/ul>\n<\/li>\n<\/ul>\n
                             <\/p>\n
                              \n
                            • \n
                                }) {<\/ul>\n<\/li>\n<\/ul>\n
                                 <\/p>\n
                                  \n
                                • \n
                                    id<\/ul>\n<\/li>\n<\/ul>\n
                                     <\/p>\n
                                      \n
                                    • \n
                                        name<\/ul>\n<\/li>\n<\/ul>\n
                                         <\/p>\n
                                          \n
                                        • \n
                                            }<\/ul>\n<\/li>\n<\/ul>\n
                                             <\/p>\n
                                              \n
                                            • \n
                                                }<\/ul>\n<\/li>\n<\/ul>\n
                                                \u30ec\u30b9\u30dd\u30f3\u30b9
                                                \n{
                                                \n“data”: {
                                                \n“findUser”: [
                                                \n{
                                                \n“id”: “u1”,
                                                \n“name”: “taro”
                                                \n}
                                                \n]
                                                \n}
                                                \n}<\/p>\n
                                                \u5f02\u5e38\u7cfb<\/h2>\n
                                                  \n
                                                • \n
                                                    \u30ea\u30af\u30a8\u30b9\u30c8<\/ul>\n<\/li>\n<\/ul>\n
                                                     <\/p>\n
                                                      \n
                                                    • \n
                                                        query findUser {<\/ul>\n<\/li>\n<\/ul>\n
                                                         <\/p>\n
                                                          \n
                                                        • \n
                                                            findUser(by: {<\/ul>\n<\/li>\n<\/ul>\n
                                                             <\/p>\n
                                                              \n
                                                            • \n
                                                                id: “u1”<\/ul>\n<\/li>\n<\/ul>\n
                                                                 <\/p>\n
                                                                  \n
                                                                • \n
                                                                    nameContaining: “x”<\/ul>\n<\/li>\n<\/ul>\n
                                                                     <\/p>\n
                                                                      \n
                                                                    • \n
                                                                        }) {<\/ul>\n<\/li>\n<\/ul>\n
                                                                         <\/p>\n
                                                                          \n
                                                                        • \n
                                                                            id<\/ul>\n<\/li>\n<\/ul>\n
                                                                             <\/p>\n
                                                                              \n
                                                                            • \n
                                                                                name<\/ul>\n<\/li>\n<\/ul>\n
                                                                                 <\/p>\n
                                                                                  \n
                                                                                • \n
                                                                                    }<\/ul>\n<\/li>\n<\/ul>\n
                                                                                     <\/p>\n
                                                                                      \n
                                                                                    • \n
                                                                                        }<\/ul>\n<\/li>\n<\/ul>\n
                                                                                        \u30ec\u30b9\u30dd\u30f3\u30b9
                                                                                        \n{
                                                                                        \n“errors”: [
                                                                                        \n{
                                                                                        \n“message”: “graphql.execution.OneOfTooManyKeysException: Exactly one key must be specified for OneOf type ‘FindUserCondition’.”,
                                                                                        \n“locations”: [
                                                                                        \n{
                                                                                        \n“line”: 2,
                                                                                        \n“column”: 3
                                                                                        \n}
                                                                                        \n],
                                                                                        \n“path”: [
                                                                                        \n“findUser”
                                                                                        \n],
                                                                                        \n“extensions”: {
                                                                                        \n“classification”: “INTERNAL_ERROR”
                                                                                        \n}
                                                                                        \n}
                                                                                        \n],
                                                                                        \n“data”: null
                                                                                        \n}<\/p>\n
                                                                                        \u5165\u529b\u30c1\u30a7\u30c3\u30af\u306f\u4f55\u3082\u5b9f\u88c5\u3057\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u3061\u3083\u3093\u3068\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u304f\u308c\u307e\u3057\u305f\uff01<\/p>\n
                                                                                        \u4f5c\u8005\u7684\u8bdd<\/h1>\n
                                                                                        GraphQL \u7684\u53ef\u8868\u8fbe\u6027\u901a\u8fc7\u6307\u4ee4\u800c\u4e0d\u662f\u9884\u7559\u5b57\u6216\u8bed\u6cd5\u8fdb\u884c\u6269\u5c55\u662f\u5f88\u6709\u8da3\u7684\u3002
                                                                                        \n\u8fd9\u6837\u4e00\u6765\uff0c\u6211\u5e0c\u671b\u5728\u6587\u6863\u4e2d\u4e5f\u80fd\u8f93\u51fa\u6307\u4ee4\u7684\u4fe1\u606f\u3002
                                                                                        \n\u76ee\u524d\u6211\u5728\u4f7f\u7528 SpectaQL \u751f\u6210 GraphQL API \u6587\u6863\u65f6\u4e0d\u652f\u6301\u8f93\u51fa\u81ea\u5b9a\u4e49\u6307\u4ee4\uff0c\u4f46\u5982\u679c\u8fd9\u4e2a\u8d8b\u52bf\u52a0\u901f\u53d1\u5c55\u7684\u8bdd\uff0c\u6211\u5e0c\u671b\u80fd\u591f\u5f97\u5230\u5bf9\u5e94\u7684\u652f\u6301\u3002
                                                                                        \n\uff08\u4e0d\u4ec5\u4ec5\u662f @oneOf\uff0c\u4e3a\u4e86\u8ba4\u8bc1\u4e5f\u53ef\u4ee5\u521b\u5efa\u81ea\u5b9a\u4e49\u6307\u4ee4\uff0c\u6bd4\u5982 @auth\uff0c\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u8bbe\u7f6e\uff0c\u4f46\u8fd9\u4e9b\u90fd\u4e0d\u80fd\u5728\u6587\u6863\u4e2d\u8f93\u51fa\uff0c\u611f\u89c9\u6709\u70b9\u9057\u61be\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
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