{"id":53138,"date":"2024-12-03T11:07:04","date_gmt":"2024-12-03T03:07:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53138\/"},"modified":"2024-12-03T11:07:04","modified_gmt":"2024-12-03T03:07:04","slug":"querybuilder-%e5%ae%9e%e8%b7%b5%e7%ac%ac-1-%e9%83%a8%e5%88%86","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53138\/","title":{"rendered":"QueryBuilder \u5b9e\u8df5\u7b2c 1 \u90e8\u5206"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>QueryBuilder \u5b9e\u8df5\u7b2c 1 \u90e8\u5206<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span>    <\/p>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u52aa\u529b\u5b66\u4e60\u5566\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aQueryBuilder \u5b9e\u8df5\u7b2c 1 \u90e8\u5206\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4e0b\u6587\u4e2d\u7684\u5185\u5bb9\u6211\u4eec\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5728\u9605\u8bfb\u672c\u6587\u8fc7\u7a0b\u4e2d\u6709\u9047\u5230\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u7559\u8a00\u5440\uff01\u6211\u4eec\u4e00\u8d77\u8ba8\u8bba\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241127\/17326840076746a8e7d7dff.jpg\" class=\"aligncenter\" title=\"QueryBuilder \u5b9e\u8df5\u7b2c 1 \u90e8\u5206\u63d2\u56fe\" alt=\"QueryBuilder \u5b9e\u8df5\u7b2c 1 \u90e8\u5206\u63d2\u56fe\" \/><\/p>\n<p>\u4e00\u822c\u4f7f\u7528 node.js \u6216\u5177\u4f53\u4f7f\u7528 total.js \u6784\u5efa\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u9ad8\u6548\u67e5\u8be2\u548c\u7ba1\u7406\u6570\u636e\u81f3\u5173\u91cd\u8981\u3002\u5728\u672c\u535a\u5ba2\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 total.js querybuilder \u6267\u884c\u57fa\u672c\u6570\u636e\u64cd\u4f5c\u3002\u7b2c\u4e00\u90e8\u5206\u5c06\u4ecb\u7ecd\u57fa\u672c\u6982\u5ff5\uff0c\u6f14\u793a\u63d2\u5165\u548c\u68c0\u7d22\u6570\u636e\u7b49\u6838\u5fc3\u64cd\u4f5c\uff0c\u5e76\u5c55\u793a\u5b9e\u9645\u793a\u4f8b\u4ee5\u5e2e\u52a9\u60a8\u5165\u95e8\u3002<\/p>\n<h3> \u5165\u95e8\uff1a\u63a2\u7d22 total.js \u4e2d\u7684 querybuilder <\/h3>\n<p>total.js \u7684 querybuilder \u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f3a\u5927\u7684\u62bd\u8c61\u5c42\uff0c\u7528\u4e8e\u901a\u8fc7\u8fc7\u6ee4\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u68c0\u7d22\u6570\u636e\u7b49\u64cd\u4f5c\u4e0e\u5404\u79cd\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002\u65e0\u8bba\u60a8\u662f\u5728\u5f00\u53d1\u8f7b\u91cf\u7ea7\u5e94\u7528\u7a0b\u5e8f\u8fd8\u662f\u7ba1\u7406\u590d\u6742\u67e5\u8be2\uff0cquerybuilder \u90fd\u4e3a node.js \u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u7b80\u5355\u800c\u7075\u6d3b\u7684 orm \u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<h4> \u6570\u636e\u5e93\u652f\u6301\u548c\u5b9e\u65bd <\/h4>\n<p>querybuilder \u5145\u5f53\u4e2d\u95f4\u5c42\uff0c\u62bd\u8c61\u6570\u636e\u5e93\u5f15\u64ce\u7684\u7ec6\u8282\u3002\u4e3a\u4e86\u6709\u6548\u5730\u5229\u7528\u5b83\uff0c\u60a8\u9700\u8981\u96c6\u6210\u73b0\u6709\u7684\u5b9e\u73b0\u6216\u6784\u5efa\u60a8\u81ea\u5df1\u7684\u4ee5\u6ee1\u8db3\u60a8\u7684\u8981\u6c42\u3002 total.js \u652f\u6301\u591a\u79cd\u6570\u636e\u5e93\u5f15\u64ce\uff0c\u786e\u4fdd\u4e0d\u540c\u7528\u4f8b\u7684\u7075\u6d3b\u6027\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u5f53\u524d\u53ef\u7528\u7684\u5b9e\u73b0\uff1a<\/p>\n<ul>\n<li> <strong>nosql \u5d4c\u5165\u5f0f\u6570\u636e\u5e93 (textdb)\uff1a<\/strong> \u8fd9\u662f total.js \u6838\u5fc3\u4e2d\u5305\u542b\u7684\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u3001\u57fa\u4e8e\u6587\u4ef6\u7684\u6570\u636e\u5e93\uff0c\u975e\u5e38\u9002\u5408\u5c0f\u578b\u5e94\u7528\u7a0b\u5e8f\u6216\u539f\u578b\u8bbe\u8ba1\u3002 <\/li>\n<li> <strong>postgresql\uff1a<\/strong> \u5c06 querybuilder \u4e0e\u6700\u5f3a\u5927\u3001\u529f\u80fd\u6700\u4e30\u5bcc\u7684\u5173\u7cfb\u6570\u636e\u5e93\u4e4b\u4e00\u7ed3\u5408\u4f7f\u7528\u3002 <\/li>\n<li> <strong>mysql\uff1a<\/strong> \u4e0e\u8fd9\u4e2a\u5e7f\u6cdb\u4f7f\u7528\u7684\u6570\u636e\u5e93\u96c6\u6210\uff0c\u4ee5\u83b7\u5f97\u53ef\u6269\u5c55\u7684\u9ad8\u6027\u80fd\u89e3\u51b3\u65b9\u6848\u3002 <\/li>\n<li> <strong>sqlite\uff1a<\/strong> \u5229\u7528 querybuilder \u548c\u8fd9\u4e2a\u8f7b\u91cf\u7ea7\u3001\u65e0\u670d\u52a1\u5668\u6570\u636e\u5e93\u6765\u5feb\u901f\u90e8\u7f72\u6216\u5d4c\u5165\u5f0f\u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n<h4> \u8bbe\u7f6e\u67e5\u8be2\u6784\u5efa\u5668 <\/h4>\n<p>\u5728\u672c\u6307\u5357\u4e2d\uff0c\u6211\u4eec\u5c06\u4ece\u5d4c\u5165\u5f0f <strong>nosql<\/strong> (<strong>textdb<\/strong>) \u6570\u636e\u5e93\u5f00\u59cb\uff0c\u6f14\u793a\u5982\u4f55\u5b9a\u4e49\u6a21\u5f0f\u5e76\u6267\u884c\u67e5\u8be2\u3001\u63d2\u5165\u548c\u66f4\u65b0\u6570\u636e\u7b49\u57fa\u672c\u64cd\u4f5c\u3002\u6700\u540e\uff0c\u60a8\u5c06\u5177\u5907\u9488\u5bf9\u5176\u4ed6\u652f\u6301\u7684\u6570\u636e\u5e93\u5f15\u64ce\u8c03\u6574\u8fd9\u4e9b\u64cd\u4f5c\u7684\u6280\u80fd\u3002<\/p>\n<h3> \u8bbe\u7f6e\u6570\u636e\u5e93 <\/h3>\n<p>\u4e3a\u4e86\u6709\u6548\u5b66\u4e60\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u793a\u4f8b\u7528\u6237\u6570\u636e\u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5 nosql \u6570\u636e\u5e93\u6587\u4ef6\u3002<\/p>\n<p><strong>\u6570\u636e\u5e93\u8bbe\u7f6e<\/strong>\uff1a\u521b\u5efa\u4e00\u4e2adatabases\/users.nosql \u6587\u4ef6\u6765\u5b58\u50a8\u793a\u4f8b\u7528\u6237\u8bb0\u5f55\uff1a<\/p>\n<pre>{\"id\": 2, \"name\": \"bob\", \"age\": 30}\n{\"id\": 3, \"name\": \"charlie\", \"age\": 28}\n{\"id\": 4, \"name\": \"diana\", \"age\": 22}\n{\"id\": 5, \"name\": \"edward\", \"age\": 35}\n{\"id\": 6, \"name\": \"john\", \"age\": 45}\n{\"id\": 7, \"name\": \"fiona\", \"age\": 27}\n{\"id\": 8, \"name\": \"george\", \"age\": 29}\n{\"id\": 9, \"name\": \"hannah\", \"age\": 24}\n{\"id\": 10, \"name\": \"isaac\", \"age\": 31}\n{\"id\": 11, \"name\": \"julia\", \"age\": 26}\n<\/pre>\n<p><strong>\u5f88\u9ad8\u5174\u77e5\u9053<\/strong>\uff1a\u60a8\u4e0d\u9700\u8981\u5728\u6570\u636e\u5e93\u6587\u4ef6\u5939\u4e2d\u624b\u52a8\u521b\u5efa .nosql \u6587\u4ef6\u3002\u5982\u679c\u5b83\u4e0d\u5b58\u5728\uff0c\u6846\u67b6\u80fd\u591f\u5728\u63d2\u5165\u64cd\u4f5c\u671f\u95f4\u521b\u5efa\u5b83\u3002\u4f46.nosql \u6587\u4ef6\u5185\u5bb9\u662f\u660e\u6587\uff0c\u4e86\u89e3\u5176\u7ed3\u6784\u5f88\u91cd\u8981\u3002\u4e5f\u8bb8\u5b83\u5bf9\u4e8e\u4fee\u590d\u67d0\u4e9b\u60c5\u51b5\u4f1a\u6709\u7528\u3002<\/p>\n<p><strong>\u6a21\u5f0f\u5b9a\u4e49<\/strong>\uff1a\u4f7f\u7528 schemas\/users.js \u4e2d\u7684\u64cd\u4f5c\u521b\u5efa\u6a21\u5f0f\u3002\u6211\u4eec\u5c06\u5b9a\u4e49\u5217\u51fa\u3001\u68c0\u7d22\u548c\u63d2\u5165\u7528\u6237\u7684\u64cd\u4f5c\u3002<\/p>\n<h3> \u5e26\u6709\u5b9e\u9645\u793a\u4f8b\u7684\u57fa\u672c querybuilder \u64cd\u4f5c <\/h3>\n<p>\u5728 schemas\/users.js \u4e2d\uff0c\u6211\u4eec\u5c06\u5b9a\u4e49\u5217\u51fa\u548c\u63d2\u5165\u7528\u6237\u7684\u64cd\u4f5c\u3002\u6b64\u67b6\u6784\u4f7f\u7528 querybuilder \u65b9\u6cd5\u6765\u8fc7\u6ee4\u6570\u636e\u3001\u68c0\u7d22\u7279\u5b9a\u8bb0\u5f55\u5e76\u5411\u6570\u636e\u5e93\u6dfb\u52a0\u65b0\u7528\u6237\u3002<\/p>\n<p><strong>1\u3002\u4f7f\u7528\u8fc7\u6ee4\u5668\u5217\u51fa\u7528\u6237<\/strong><br \/> \u6211\u4eec\u9996\u5148\u5b9a\u4e49\u4e00\u4e2a\u5217\u8868\u64cd\u4f5c\u6765\u6839\u636e\u59d3\u540d\u6216\u5e74\u9f84\u7b49\u6761\u4ef6\u68c0\u7d22\u7528\u6237\u3002<\/p>\n<pre>newschema('users', function(schema) {\n\n    schema.action('list', {\n        name: 'list users',\n        query: 'page:number, sort:string, name:string',\n        params: 'id:string',\n        action: async function($) {\n            \/\/ example: filter by name\n            var users = await data.find('nosql\/users').where('name', $.query.name).promise();\n            $.callback(users); \n        }\n    });\n});\n<\/pre>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong>:<\/p>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528\u5217\u8868\u8fc7\u6ee4\u7528\u6237\u7684\u4e00\u4e9b\u53d8\u4f53\u3002<\/p>\n<ul>\n<li> <strong>\u6309\u540d\u79f0\u8fc7\u6ee4<\/strong>\uff1a <\/li>\n<\/ul>\n<pre>var users = await action('users\/list').where('name', 'john').promise();\nconsole.log(users);\n<\/pre>\n<ul>\n<li> <strong>\u4ec5\u68c0\u7d22\u7b2c\u4e00\u4e2a\u7528\u6237<\/strong>\uff1a <\/li>\n<\/ul>\n<pre>var user = await data.find('nosql\/users').first().promise();\nconsole.log(user);\n<\/pre>\n<p><strong>2\u3002\u901a\u8fc7 id \u68c0\u7d22\u7528\u6237<\/strong><br \/> \u53e6\u4e00\u4e2a\u6709\u7528\u7684\u529f\u80fd\u662f\u901a\u8fc7 id \u68c0\u7d22\u7528\u6237\u3002\u4f7f\u7528 querybuilder \u7684 .id() \u65b9\u6cd5\u4f7f\u8fd9\u53d8\u5f97\u7b80\u5355\uff1a<\/p>\n<pre>var builder = data.find('nosql\/users');\nbuilder.id($.params.id);\n\/\/ or builder.where('id', $.params.id);\n$.callback(await builder.promise());\n<\/pre>\n<p><strong>\u7528\u6cd5\u793a\u4f8b<\/strong>:<\/p>\n<pre>var user = await action('users\/list').params({ id: 5 }).promise();\nconsole.log(user);  \/\/ retrieves user with id 5\n<\/pre>\n<p><strong>3\u3002\u63d2\u5165\u65b0\u7528\u6237<\/strong><br \/> \u63a5\u4e0b\u6765\uff0c\u8ba9\u6211\u4eec\u5b9a\u4e49\u4e00\u4e2a\u63d2\u5165\u64cd\u4f5c\u4ee5\u5c06\u65b0\u7528\u6237\u6dfb\u52a0\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<pre>schema.action('insert', {\n    name: 'inserting new users',\n    input: '*name:string, age:number',\n    output: 'success:boolean',\n    action: function($, model) {\n        data.insert('nosql\/users', model).callback(function(err) {\n            if (err) {\n                console.error(err);\n            } else {\n                $.success(true);\n            }\n        });\n    }\n});\n<\/pre>\n<p>\u6b64\u64cd\u4f5c\u5c06\u7528\u6237\u6dfb\u52a0\u5230databases\/users.nosql\u3002\u4ee5\u4e0b\u662f\u8c03\u7528\u63d2\u5165\u64cd\u4f5c\u7684\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u4f7f\u7528\u793a\u4f8b<\/strong>\uff1a<\/p>\n<pre>\/\/ in `definitions\/test.js`\non('ready', function() {\n  var result = await action('users\/insert', { name: 'alice', age: 25 }).promise();\n    console.log(result);\n});\n<\/pre>\n<h3> \u5b9e\u9645\u4f7f\u7528\u6848\u4f8b\uff1aquerybuilder \u7684\u5b9e\u9645\u5e94\u7528 <\/h3>\n<p><strong>1\u3002\u6309\u8fc7\u6ee4\u540e\u7684\u540d\u79f0\u68c0\u7d22\u7528\u6237<\/strong><\/p>\n<pre>async function getusersbyname() {\n    var users = await action('users\/list').query({ name: 'hannah' }).promise();\n    console.log(users);\n}\ngetusersbyname();\n<\/pre>\n<p><strong>2\u3002\u901a\u8fc7id\u68c0\u7d22\u7528\u6237<\/strong><\/p>\n<pre>async function getuserbyid() {\n    var user = await action('users\/list').params({ id: 4 }).promise();\n    console.log(user);\n}\ngetuserbyid();\n<\/pre>\n<p><strong>3\u3002\u63d2\u5165\u65b0\u7528\u6237\u5e76\u68c0\u7d22\u66f4\u65b0\u7684\u5217\u8868<\/strong><\/p>\n<pre>async function insertAndRetrieve() {\n    await ACTION('Users\/insert', { name: 'James', age: 32 }).promise();\n    var users = await ACTION('Users\/list').promise();\n    console.log(users);\n}\ninsertAndRetrieve();\n<\/pre>\n<h3> \u7ed3\u8bba <\/h3>\n<p>\u5728 querybuilder \u5b9e\u9645\u64cd\u4f5c\u7684\u7b2c\u4e00\u90e8\u5206\u4e2d\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u57fa\u672c\u77e5\u8bc6\uff1a\u521b\u5efa\u57fa\u672c\u7684 nosql \u6570\u636e\u5e93\u3001\u5b9a\u4e49\u67b6\u6784\u64cd\u4f5c\u4ee5\u53ca\u4f7f\u7528 querybuilder 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