{"id":7295,"date":"2022-09-07T08:19:51","date_gmt":"2022-09-07T00:19:51","guid":{"rendered":"http:\/\/123.57.164.21\/?p=7295"},"modified":"2022-09-07T09:01:56","modified_gmt":"2022-09-07T01:01:56","slug":"mongodb%e5%ae%9e%e4%bd%93%e7%b1%bb%e8%ae%be%e7%bd%ae%e5%ad%97%e6%ae%b5%e9%bb%98%e8%ae%a4%e5%80%bc","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=7295","title":{"rendered":"MongoDB\u5b9e\u4f53\u7c7b\u8bbe\u7f6e\u5b57\u6bb5\u9ed8\u8ba4\u503c"},"content":{"rendered":"\n<p>spring-data-mongodb\u4e2d\u7684\u5b9e\u4f53\u6620\u5c04\u662f\u901a\u8fc7MongoMappingConverter\u8fd9\u4e2a\u7c7b\u5b9e\u73b0\u7684\u3002\u5b83\u53ef\u4ee5\u901a\u8fc7\u6ce8\u91ca\u628ajava\u7c7b\u8f6c\u6362\u4e3amongodb\u7684\u6587\u6863\u3002<\/p>\n\n\n\n<p>\u5b83\u6709\u4ee5\u4e0b\u51e0\u79cd\u6ce8\u91ca\uff1a<\/p>\n\n\n\n<ul><li>@Id &#8211; \u6587\u6863\u7684\u552f\u4e00\u6807\u8bc6\uff0c\u5728mongodb\u4e2d\u4e3aObjectId\uff0c\u5b83\u662f\u552f\u4e00\u7684\uff0c\u901a\u8fc7\u65f6\u95f4\u6233+\u673a\u5668\u6807\u8bc6+\u8fdb\u7a0bID+\u81ea\u589e\u8ba1\u6570\u5668\uff08\u786e\u4fdd\u540c\u4e00\u79d2\u5185\u4ea7\u751f\u7684Id\u4e0d\u4f1a\u51b2\u7a81\uff09\u6784\u6210\u3002<\/li><\/ul>\n\n\n\n<ul><li>@Document &#8211; \u628a\u4e00\u4e2ajava\u7c7b\u58f0\u660e\u4e3amongodb\u7684\u6587\u6863\uff0c\u53ef\u4ee5\u901a\u8fc7collection\u53c2\u6570\u6307\u5b9a\u8fd9\u4e2a\u7c7b\u5bf9\u5e94\u7684\u6587\u6863\u3002<\/li><\/ul>\n\n\n\n<ul><li>@DBRef &#8211; \u58f0\u660e\u7c7b\u4f3c\u4e8e\u5173\u7cfb\u6570\u636e\u5e93\u7684\u5173\u8054\u5173\u7cfb\u3002ps\uff1a\u6682\u4e0d\u652f\u6301\u7ea7\u8054\u7684\u4fdd\u5b58\u529f\u80fd\uff0c\u5f53\u4f60\u5728\u672c\u5b9e\u4f8b\u4e2d\u4fee\u6539\u4e86DERef\u5bf9\u8c61\u91cc\u9762\u7684\u503c\u65f6\uff0c\u5355\u72ec\u4fdd\u5b58\u672c\u5b9e\u4f8b\u5e76\u4e0d\u80fd\u4fdd\u5b58DERef\u5f15\u7528\u7684\u5bf9\u8c61\uff0c\u5b83\u8981\u53e6\u5916\u4fdd\u5b58\uff0c\u5982\u4e0b\u9762\u4f8b\u5b50\u7684Person\u548cAccount\u3002<\/li><\/ul>\n\n\n\n<ul><li>@Indexed &#8211; \u58f0\u660e\u8be5\u5b57\u6bb5\u9700\u8981\u7d22\u5f15\uff0c\u5efa\u7d22\u5f15\u53ef\u4ee5\u5927\u5927\u7684\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002<\/li><li>@CompoundIndex &#8211; \u590d\u5408\u7d22\u5f15\u7684\u58f0\u660e\uff0c\u5efa\u590d\u5408\u7d22\u5f15\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u591a\u5b57\u6bb5\u7684\u67e5\u8be2\u6548\u7387\u3002<\/li><li>@GeoSpatialIndexed &#8211; \u58f0\u660e\u8be5\u5b57\u6bb5\u4e3a\u5730\u7406\u4fe1\u606f\u7684\u7d22\u5f15\u3002<\/li><li>@Transient &#8211; \u6620\u5c04\u5ffd\u7565\u7684\u5b57\u6bb5\uff0c\u8be5\u5b57\u6bb5\u4e0d\u4f1a\u4fdd\u5b58\u5230mongodb\u3002<\/li><li>@PersistenceConstructor &#8211; \u58f0\u660e\u6784\u9020\u51fd\u6570\uff0c\u4f5c\u7528\u662f\u628a\u4ece\u6570\u636e\u5e93\u53d6\u51fa\u7684\u6570\u636e\u5b9e\u4f8b\u5316\u4e3a\u5bf9\u8c61\u3002\u8be5\u6784\u9020\u51fd\u6570\u4f20\u5165\u7684\u503c\u4e3a\u4eceDBObject\u4e2d\u53d6\u51fa\u7684\u6570\u636e\u3002<\/li><\/ul>\n\n\n\n<p>\u4ee5\u4e0b\u5f15\u7528\u4e00\u4e2a\u5b98\u65b9\u6587\u6863\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@Document(collection=\"person\")  \n@CompoundIndexes({  \n    @CompoundIndex(name = \"age_idx\", def = \"{'lastName': 1, 'age': -1}\")  \n})  \npublic class Person&lt;T extends Address> {  \n  \n  @Id  \n  private String id;  \n  @Indexed(unique = true)  \n  private Integer ssn;  \n  private String firstName;  \n  @Indexed  \n  private String lastName;  \n  private Integer age;  \n  @Transient  \n  private Integer accountTotal;  \n  @DBRef  \n  private List&lt;Account> accounts;  \n  private T address;  \n  \n    \n  public Person(Integer ssn) {  \n    this.ssn = ssn;  \n  }  \n    \n  @PersistenceConstructor  \n  public Person(Integer ssn, String firstName, String lastName, Integer age, T address) {  \n    this.ssn = ssn;  \n    this.firstName = firstName;  \n    this.lastName = lastName;  \n    this.age = age;  \n    this.address = address;  \n  }  <\/pre>\n\n\n\n<p>Account\u7c7b<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@Document  \npublic class Account {  \n  \n  @Id  \n  private ObjectId id;  \n  private Float total;  \n  \n} <\/pre>\n\n\n\n<p>spring data 4 mongoDB\u81ea\u52a8\u521b\u5efa\u590d\u5408\u7d22\u5f15<\/p>\n\n\n\n<p>spring data 4 mongodb \u5728domain\u4e0a\u6dfb\u52a0annation\uff0c\u81ea\u52a8\u521b\u5efa\u590d\u5408\u7d22\u5f15\u65f6\u9700\u8981\u4f7f\u7528CompoundIndexes\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@CompoundIndex(name = \"shop_index\", def = \"{platform : 1, shopId : 1}\") \n\u7a0b\u5e8f\u4e5f\u4e0d\u4f1a\u6709\u7f16\u8bd1\u9519\u8bef\u6216\u8005\u6267\u884c\u9519\u8bef\uff0c\u4f46\u662fspring data\u4e0d\u4f1a\u5efa\u7acb\u4efb\u4f55\u7d22\u5f15, \n\u4e0b\u9762\u8fd9\u6837\u5199\u624d\u4f1a\u542f\u52a8\u65f6\u81ea\u52a8\u5efa\u7acb\u590d\u5408\u7d22\u5f15\u3002 \n \n@CompoundIndexes({ \n     @CompoundIndex(name = \"shop_index\", def = \"{platform : 1, shopId : 1}\") \n})  <\/pre>\n\n\n\n<p>\u901a\u8fc7\u5411MongoRepository\u63a5\u53e3\u4e2d\u4f7f\u7528\u7684Java Class\u5b9e\u4f53\u6dfb\u52a0\u5c5e\u6027\uff0c\u6211\u5728\u96c6\u5408\u4e2d\u6dfb\u52a0\u4e86\u4e00\u4e2a\u65b0\u7684\u5e03\u5c14\u503c\u5b57\u6bb5\u3002\u4f46\u662f\uff0c\u73b0\u6709\u6587\u6863\u7684\u65b0\u5b57\u6bb5\u5728\u6570\u636e\u5e93\u4e2d\u88ab\u521d\u59cb\u5316\u4e3anull\u3002\u6211\u5e0c\u671b\u5c06\u73b0\u6709\u6587\u6863\u4e2d\u65b0\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u8bbe\u7f6e\u4e3afalse\u3002\u5728Spring Data MongoDB\u4e2d\u5982\u4f55\u505a\u5230\u8fd9\u4e00\u70b9\u5462\uff1f<\/p>\n\n\n\n<p>\u5728java\u4e2d\uff0c\u5b9e\u4f8b\u5bf9\u8c61\u7684\u7f3a\u7701\u503c\u662fnull\uff0c\u56e0\u6b64mongoDB\u4e2d\u6ca1\u6709isAlive\u503c\u7684\u6587\u6863\u5c06\u7f3a\u7701\u4e3anull\u3002\u5982\u679c\u9700\u8981\u5c06\u7f3a\u7701\u503c\u8bbe\u7f6e\u4e3afalse\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@Document\nPublic Class Person {\n@Id\nPrivate String id;\nprivate String firstName;\n\n@Builder.Default\nprivate String lastName = \"\";\n\n@Builder.Default\nprivate Boolean isAlive  = Boolean.FALSE; \/\/New Boolean attribute<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>spring-data-mongodb\u4e2d\u7684\u5b9e\u4f53\u6620\u5c04\u662f\u901a\u8fc7MongoMappingConverter\u8fd9\u4e2a\u7c7b\u5b9e\u73b0\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,23],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/7295"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7295"}],"version-history":[{"count":5,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/7295\/revisions"}],"predecessor-version":[{"id":7300,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/7295\/revisions\/7300"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}