我有一个存储在 arangodb 中的对象，它有额外的内部对象，我当前的用例要求我只更新其中一个元素。
存储对象
{
"status": "Active",
"physicalCode": "99999",
"postalCode": "999999",
"tradingCurrency": "USD",
"taxRate": "14",
"priceVatInclusive": "No",
"type": "eCommerce",
"name": "John and Sons inc",
"description": "John and Sons inc",
"createdDate": "2015-05-25T11:04:14+0200",
"modifiedDate": "2015-05-25T11:04:14+0200",
"physicalAddress": "Corner moon and space 9 station",
"postalAddress": "PO Box 44757553",
"physicalCountry": "Mars Sector 9",
"postalCountry": "Mars Sector 9",
"createdBy": "john.doe",
"modifiedBy": "john.doe",
"users": [
{
"id": "577458630580",
"username": "john.doe"
}
],
"products": [
{
"sellingPrice": "95.00",
"inStock": "10",
"name": "School Shirt Green",
"code": "SKITO2939999995",
"warehouseId": "723468998682"
},
{
"sellingPrice": "95.00",
"inStock": "5",
"name": "School Shirt Red",
"code": "SKITO245454949495",
"warehouseId": "723468998682"
},
{
"sellingPrice": "95.00",
"inStock": "10",
"discount": "5%",
"name": "School Shirt Blue",
"code": "SKITO293949495",
"warehouseId": "723468998682"
}
]
}
我只想更改其中一种产品的库存价值
{
"sellingPrice": "95.00",
"inStock": "10",
"discount": "5%",
"name": "School Shirt Blue",
"code": "SKITO293949495",
"warehouseId": "723468998682"
}
就像 update store product stock less 1 where store id = x 一样，有这样的效果
FOR store IN stores
FILTER store._key == "837108415472"
FOR product IN store.products
FILTER product.code == "SKITO293949495"
UPDATE product WITH { inStock: (product.inStock - 1) } IN store.products
除了上述之外，将产品作为单独的文档存储在集合 store_products 中可能是有意义的。我相信 NOSQL 是减少文档大小的最佳方法。