amazon-dynamodb

问题 DynamoDB provides an API for deleting items. In the returned DeleteItemOutcome and DeleteItemResult there is no field or method to determine if the key was found and the item was indeed deleted. The only way to find out if the item was indeed present and deleted, is to request the items' attributes: new DeleteItemSpec() .withPrimaryKey("key","1") .withReturnValues(ReturnValue.ALL_OLD)) This, however, consumes extra read capacity. Is there a more efficient way to check the delete result - key

问题 I have created a attribute of type String Set. When I create the Item and assign an attribute of type SS everything works. But when I try to update this attribute, the data type changes to a list ("L"). I try this: qw = new AWS.DynamoDB.DocumentClient(); var params = { TableName : "myTable", Key: { "id": somekey }, UpdateExpression: "set ssvar= :arrp", ExpressionAttributeValues: { ":arrp": [ "test", "test2" ] } }; qw.update (etc.) This leads to a change in datatype in dynamodb and in stead of

问题 I want to use more than one dynamodb table in my serverless project. How do I properly define multiple resources in the iamrolestatements? I have an example serverless.yml service: serverless-expense-tracker frameworkVersion: ">=1.1.0 <2.0.0" provider: name: aws runtime: nodejs6.10 environment: EXPENSES_TABLE: "${self:service}-${opt:stage, self:provider.stage}-expenses" BUDGETS_TABLE: "${self:service}-${opt:stage, self:provider.stage}-budgets" iamRoleStatements: - Effect: Allow Action: -

问题 Has anyone made the change to the new namespaces ( com.amazonaws.services.dynamodbv2 ) and interfaces for DynamoDB in the AWS Java SDK 1.4.2 (and later)? The release of Local Secondary Indices apparently necessitated breaking changes as per the 1.4.2 release notes. Has anyone found a guide detailing what changed and what needs to happen to migrate existing code? I am trying to decide when is best to make this change for an existing code base. 回答1: The new dynamodbv2 namespace of DynamoDB

问题 Has anyone made the change to the new namespaces ( com.amazonaws.services.dynamodbv2 ) and interfaces for DynamoDB in the AWS Java SDK 1.4.2 (and later)? The release of Local Secondary Indices apparently necessitated breaking changes as per the 1.4.2 release notes. Has anyone found a guide detailing what changed and what needs to happen to migrate existing code? I am trying to decide when is best to make this change for an existing code base. 回答1: The new dynamodbv2 namespace of DynamoDB

问题 I am introducing a new field InActive in my dynamo DB table, now I want to fetch the records which were active earlier (assuming all previous records were active) along with new Active records. What should be my dynamo DB Query expression? final HashMap<String, AttributeValue> activeExpressionAttrValue = new HashMap<>(); activeExpressionAttrValue.put(":in_active_false", new AttributeValue().withBOOL(false)); activeExpressionAttrValue.put(":in_active_null", new AttributeValue().withNULL(true))

问题 I am introducing a new field InActive in my dynamo DB table, now I want to fetch the records which were active earlier (assuming all previous records were active) along with new Active records. What should be my dynamo DB Query expression? final HashMap<String, AttributeValue> activeExpressionAttrValue = new HashMap<>(); activeExpressionAttrValue.put(":in_active_false", new AttributeValue().withBOOL(false)); activeExpressionAttrValue.put(":in_active_null", new AttributeValue().withNULL(true))

问题 I'm using pytest ,boto3 and aws and want to have dynamic assertions with parameterized tests. How to improve this code to only assert on a specific group of subnetids? production_private_ids = ["subnet-08f6d70b65b5cxx38", "subnet-0b6aaaf1ce207xx03", "subnet-0e54fda8f811fxxd8"]) .... nonproduction_private_ids = ["subnet-11f6xx0b65b5cxx38", "subnet-116aaaf1ce207xx99", "subnet-11xxfda8f811fxx77"]) .... @pytest.mark.parametrize("subnet", ["production_private_ids", "nonproduction_private_ids",

问题 I am trying to achieve an update operation using my API method to update the content of the table. I have following lambda code set up: def lambda_handler(event, context): param = event['queryStringParameters']['employeID'] name = event['queryStringParameters']['employeName'] dynamodb = boto3.resource('dynamodb', region_name="us-east-1") table = dynamodb.Table('api_demo_employe') response = table.update_item( Key = { 'employeID' : param } ) I need to figure out how can i set the

问题 I'm wrapping my dynamoDB function into another function and I'm having issues with returning it to the "item" const. What I'm missing here? Works: const params = { TableName: table, Key: { id: id }, }; dynamoDb.get(params, (error, result) => { if (error) { console.error(error); callback(null, { statusCode: error.statusCode || 501, body: 'Couldn\'t fetch the item.', }); return; } const item = result.Item }) Doesn't work (returns undefinied): const getFromDb = () => { const params = { TableName