{"id":1797,"date":"2021-08-24T20:27:00","date_gmt":"2021-08-24T11:27:00","guid":{"rendered":"https:\/\/dennie.tokyo\/it\/?p=1797"},"modified":"2022-04-03T15:43:17","modified_gmt":"2022-04-03T06:43:17","slug":"%e3%80%90dynamodb%e3%80%91aws-sdk-%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9f%e9%a0%85%e7%9b%ae%e3%81%ae%e6%9b%b4%e6%96%b0","status":"publish","type":"post","link":"https:\/\/dennie.tokyo\/it\/?p=1797","title":{"rendered":"\u3010DynamoDB\u3011AWS SDK \u3092\u4f7f\u7528\u3057\u305f\u9805\u76ee\u306e\u66f4\u65b0"},"content":{"rendered":"\n

\u524d\u56de\u306f\u9805\u76ee\u306e\u8ffd\u52a0\u3092\u884c\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n\n\n\n\n

\u524d\u56de\u306f\u4ee5\u4e0b\u3092\u53c2\u7167\u3057\u3066\u4e0b\u3055\u3044\u3002<\/p>\n\n\n\n

\u524d\u56de<\/span>\n

\u3010DynamoDB\u3011AWS SDK \u3092\u4f7f\u7528\u3057\u305f\u9805\u76ee\u306e\u8ffd\u52a0<\/a><\/p>\n<\/div>\n\n\n\n

\u4eca\u56de\u306f\u9805\u76ee\u306e\u66f4\u65b0\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u9805\u76ee\u306e\u66f4\u65b0<\/h1>\n\n\n\n

\u9805\u76ee\u306e\u66f4\u65b0\u306b\u306f updateItem \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002
updateItem\u306f\u3001\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u3092\u6307\u5b9a\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002
updateItem\u306f\u3001\u66f4\u65b0\u3059\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u9805\u76ee\u306b\u4e00\u81f4\u3059\u308b\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u306e\u5024\u304c\u5b58\u5728\u3059\u308b\u304b\u3057\u306a\u3044\u304b\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u51e6\u7406\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u30fb\u4e00\u81f4\u3059\u308b\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u306e\u5024\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u3001\u9805\u76ee\u3092\u65b0\u898f\u8ffd\u52a0\u3057\u307e\u3059\u3002
\u30fb\u4e00\u81f4\u3059\u308b\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u306e\u5024\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u306e\u5024\u306b\u4e00\u81f4\u3059\u308b\u9805\u76ee\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\u306a\u304a\u3001updateItem\u306f\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u306e\u66f4\u65b0\u306f\u884c\u3048\u307e\u305b\u3093\u3002
\u5c5e\u6027\u306e\u8ffd\u52a0\u3001\u66f4\u65b0\u3001\u524a\u9664\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u30c6\u30fc\u30d6\u30eb\u306e\u5185\u5bb9<\/h1>\n\n\n\n

\u30c6\u30fc\u30d6\u30eb\u306e\u60c5\u5831\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n

\u30c6\u30fc\u30d6\u30eb\u540d\uff1a Musics
\u30d1\u30fc\u30c6\u30b7\u30e7\u30f3\u30ad\u30fc\uff1a “artist”
\u30bd\u30fc\u30c8\u30ad\u30fc\uff1a “title”<\/p>\n\n\n\n

\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u306e\u307f\u3067\u69cb\u6210\u3055\u308c\u308b\u9805\u76ee\u304c\u5b58\u5728\u3059\u308b\u3082\u306e\u3068\u3057\u307e\u3059\u3002
“artist” \u306e\u5024: “B’z”
“title” \u306e\u5024: “GREEN”<\/p>\n\n\n\n

\u5c5e\u6027\u306e\u8ffd\u52a0<\/h1>\n\n\n\n

“sngsCnt” \u3068\u3044\u3046\u5c5e\u6027\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\u5b9f\u884c<\/h2>\n\n\n\n
const DynamoDbSetter = require(".\/DynamoDbSetter");\n \nmodule.exports = class DynamoDbOperator extends DynamoDbSetter{\n \n    async exec(event) {\n \n        \/\/ \u5b9f\u884c\u5185\u5bb9\n        let params = {\n            TableName : "Musics",\n            Key:{ \n                "artist": {"S":"B'z"},\n                "title": {"S": "GREEN"},\n            },\n            UpdateExpression: "SET #sngsCnt= :sngsCntValue",\n            ExpressionAttributeNames: {\n                "#sngsCnt": "sngsCnt",\n            },\n            ExpressionAttributeValues: {\n                ":sngsCntValue": {"N": "12"},\n            },\n            ReturnValues: "ALL_NEW",\n            ReturnConsumedCapacity: "INDEXES"\n        };\n    \n        \/\/ \u5b9f\u884c\n        return await this.dynamodb.updateItem(params).promise();\n \n    }\n}<\/code><\/pre><\/div>\n\n\n\n
\u5b9f\u884c\u5185\u5bb9\u306e\u8aac\u660e<\/h2>\n\n\n\n
Key<\/h3>\n\n\n\n
Key\u306b\u306f\u66f4\u65b0\u3057\u305f\u3044\u9805\u76ee\u306e\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u3092\u6307\u5b9a\u3057\u3066\u4e0b\u3055\u3044\u3002<\/p>\n\n\n\n
UpdateExpression<\/h3>\n\n\n\n
\u66f4\u65b0\u3057\u305f\u3044\u5c5e\u6027\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002
“#~” \u306f \u30ad\u30fc\u540d\u306e\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u306b\u306a\u308a\u307e\u3059\u3002
“:~” \u306f \u5024\u306e\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u306b\u306a\u308a\u307e\u3059\u3002
\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u306e\u306f\u3001\u30ad\u30fc\u540d\u3001\u5024\u306bDynamoDB\u306e\u4e88\u7d04\u8a9e\u304c\u4f7f\u7528\u3055\u308c\u308b\u5834\u5408\u306b\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u306a\u3044\u304b\u3089\u3067\u3059\u3002
\u4e88\u7d04\u8a9e\u3068\u88ab\u3089\u306a\u3051\u308c\u3070\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u65b9\u304c\u30a8\u30e9\u30fc\u304c\u306a\u304f\u5b9f\u884c\u3067\u304d\u308b\u306e\u3067\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
DynamoDB\u306e\u4e88\u7d04\u8a9e\u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0b\u3092\u53c2\u7167\u3057\u3066\u4e0b\u3055\u3044\u3002<\/p>\n\n\n\n
\u53c2\u7167<\/span>\n
DynamoDB\u4e88\u7d04\u8a9e<\/a><\/p>\n<\/div>\n\n\n\n
ExpressionAttributeNames<\/h3>\n\n\n\n
“#~” \u3067\u6307\u5b9a\u3057\u305f\u5b9f\u969b\u306e\u30ad\u30fc\u540d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
ExpressionAttributeValues<\/h3>\n\n\n\n
“:~” \u3067\u6307\u5b9a\u3057\u305f\u5b9f\u969b\u306e\u5024\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
ReturnValues<\/h3>\n\n\n\n
putItem \u540c\u69d8 updateItem \u3082 ReturnValues \u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002
putItem \u306e ReturnValues \u306f \u201cALL_OLD\u201d \u306e\u307f\u6307\u5b9a\u3067\u304d\u307e\u3059\u304c\u3001
updateItem \u306f\u4ee5\u4e0b\u306e\u6307\u5b9a\u304c\u53ef\u80fd\u3067\u3059\u3002\u307e\u305f\u3001\u9805\u76ee\u306e\u66f4\u65b0\u3001\u8ffd\u52a0\u306b\u3088\u308a\u8fd4\u5374\u3055\u308c\u308b\u5024\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
ALL_OLD<\/h4>\n\n\n\n
\u30fb\u9805\u76ee\u304c\u8ffd\u52a0\u3055\u308c\u308b\u5834\u5408\u3001\u4f55\u3082\u8fd4\u5374\u3055\u308c\u307e\u305b\u3093\u3002
\u30fb\u9805\u76ee\u304c\u66f4\u65b0\u3055\u308c\u308b\u5834\u5408\u3001\u66f4\u65b0\u524d\u306e\u9805\u76ee\u306e\u5185\u5bb9\u304c\u8fd4\u5374\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
ALL_NEW<\/h4>\n\n\n\n
\u30fb\u9805\u76ee\u306e\u66f4\u65b0\u3082\u8ffd\u52a0\u3082\u540c\u69d8\u306b\u3001\u8ffd\u52a0\u3001\u66f4\u65b0\u3055\u308c\u308b\u9805\u76ee\u306e\u5185\u5bb9\u304c\u8fd4\u5374\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
UPDATED_OLD<\/h4>\n\n\n\n
\u30fb\u9805\u76ee\u304c\u8ffd\u52a0\u3055\u308c\u308b\u5834\u5408\u3001\u4f55\u3082\u8fd4\u5374\u3055\u308c\u307e\u305b\u3093\u3002
\u30fb\u9805\u76ee\u304c\u66f4\u65b0\u3055\u308c\u308b\u5834\u5408\u3001\u66f4\u65b0\u3055\u308c\u305f\u5c5e\u6027\u306e\u66f4\u65b0\u524d\u306e\u5185\u5bb9\u304c\u8fd4\u5374\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
UPDATED_NEW<\/h4>\n\n\n\n
\u30fb\u9805\u76ee\u306e\u66f4\u65b0\u3082\u8ffd\u52a0\u3082\u540c\u69d8\u306b\u3001\u66f4\u65b0\u3055\u308c\u305f\u5c5e\u6027\u306e\u66f4\u65b0\u5f8c\u306e\u5185\u5bb9\u304c\u8fd4\u5374\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
ReturnConsumedCapacity<\/h3>\n\n\n\n
putItem\u3067\u8aac\u660e\u3057\u305f\u3082\u306e\u3068\u540c\u69d8\u3067\u3059\u3002<\/p>\n\n\n\n
\u53c2\u8003<\/span>\n
\u3010DynamoDB\u3011AWS SDK \u3092\u4f7f\u7528\u3057\u305f\u9805\u76ee\u306e\u8ffd\u52a0<\/a><\/p>\n<\/div>\n\n\n\n
\u7d50\u679c<\/h2>\n\n\n\n
{\n    "Attributes": {\n        "artist": {\n            "S": "B'z"\n        },\n        "sngsCnt": {\n            "N": "12"\n        },\n        "title": {\n            "S": "GREEN"\n        }\n    },\n    "ConsumedCapacity": {\n        "TableName": "Musics",\n        "CapacityUnits": 1,\n        "Table": {\n            "CapacityUnits": 1\n        }\n    }\n}<\/code><\/pre><\/div>\n\n\n\n
\u5c5e\u6027\u306e\u66f4\u65b0<\/h1>\n\n\n\n
\u8ffd\u52a0\u3057\u305f\u5c5e\u6027 “sngsCnt” \u306e\u5024\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u5b9f\u884c<\/h2>\n\n\n\n
const DynamoDbSetter = require(".\/DynamoDbSetter");\n \nmodule.exports = class DynamoDbOperator extends DynamoDbSetter{\n \n    async exec(event) {\n \n        \/\/ \u5b9f\u884c\u5185\u5bb9\n        let params = {\n            TableName : "Musics",\n            Key:{ \n                "artist": {"S":"B'z"},\n                "title": {"S": "GREEN"},\n            },\n            UpdateExpression: "SET #sngsCnt= :sngsCntValue",\n            ExpressionAttributeNames: {\n                "#sngsCnt": "sngsCnt",\n            },\n            ExpressionAttributeValues: {\n                ":sngsCntValue": {"N": "20"},\n            },\n            ReturnValues: "ALL_NEW",\n            ReturnConsumedCapacity: "INDEXES"\n        };\n    \n        \/\/ \u5b9f\u884c\n        return await this.dynamodb.updateItem(params).promise();\n \n    }\n}<\/code><\/pre><\/div>\n\n\n\n
\u7d50\u679c<\/h2>\n\n\n\n
{\n    "Attributes": {\n        "artist": {\n            "S": "B'z"\n        },\n        "sngsCnt": {\n            "N": "20"\n        },\n        "title": {\n            "S": "GREEN"\n        }\n    },\n    "ConsumedCapacity": {\n        "TableName": "Musics",\n        "CapacityUnits": 1,\n        "Table": {\n            "CapacityUnits": 1\n        }\n    }\n}<\/code><\/pre><\/div>\n\n\n\n
\u6700\u5f8c\u306b<\/h1>\n\n\n\n
\u6b21\u56de\u306f\u9805\u76ee\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u6b21\u56de<\/span>\n
\u3010DynamoDB\u3011AWS SDK \u3092\u4f7f\u7528\u3057\u305f\u5358\u4e00\u9805\u76ee\u306e\u53d6\u5f97<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u524d\u56de\u306f\u9805\u76ee\u306e\u8ffd\u52a0\u3092\u884c\u3044\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"author":1,"featured_media":7,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,19,20],"tags":[],"class_list":["post-1797","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aws","category-dynamodb","category-lambda"],"_links":{"self":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/1797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1797"}],"version-history":[{"count":21,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/1797\/revisions"}],"predecessor-version":[{"id":3410,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/posts\/1797\/revisions\/3410"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=\/wp\/v2\/media\/7"}],"wp:attachment":[{"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dennie.tokyo\/it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}