amazon-dynamodb

问题 I am trying to create a dynamoDBMapper annotation for the below case. I have EmployeeLevelTrail which is a class of a Employee level record @DynamoDBTable(tableName = TABLE_NAME) public class EmployeeData { public final static String TABLE_NAME = “EmployeeDataRecord”; @DynamoDBAttribute(attributeName = “employeeID”) public String EmployeeID; @DynamoDBAttribute(attributeName = “EmployeeLevelDataRecords”) @DynamoDBTyped(DynamoDBMapperFieldModel.DynamoDBAttributeType.M) public EmployeeLevelTrail

问题 I am trying to create a dynamoDBMapper annotation for the below case. I have EmployeeLevelTrail which is a class of a Employee level record @DynamoDBTable(tableName = TABLE_NAME) public class EmployeeData { public final static String TABLE_NAME = “EmployeeDataRecord”; @DynamoDBAttribute(attributeName = “employeeID”) public String EmployeeID; @DynamoDBAttribute(attributeName = “EmployeeLevelDataRecords”) @DynamoDBTyped(DynamoDBMapperFieldModel.DynamoDBAttributeType.M) public EmployeeLevelTrail

问题 I'm using DynamoDB as an K-V db (cause there's not much data, I think that's fine) , and part of 'V' is list type (about 10 elements). There's some session to append a new value to it, and I cannot find a way to do this in 1 request. What I did is like this: item = self.list_table.get_item(**{'k': 'some_key'}) item['v'].append('some_value') item.partial_save() I request the server first and save it after modified the value. That's not atomic and looks ugly. Is there any way to do this in one

问题 I'm using DynamoDB as an K-V db (cause there's not much data, I think that's fine) , and part of 'V' is list type (about 10 elements). There's some session to append a new value to it, and I cannot find a way to do this in 1 request. What I did is like this: item = self.list_table.get_item(**{'k': 'some_key'}) item['v'].append('some_value') item.partial_save() I request the server first and save it after modified the value. That's not atomic and looks ugly. Is there any way to do this in one

问题 I have a lambda function which does a transaction in DynamoDB similar to this. try { const reservationId = genId(); await transactionFn(); return { statusCode: 200, body: JSON.stringify({id: reservationId}) }; async function transactionFn() { try { await docClient.transactWrite({ TransactItems: [ { Put: { TableName: ReservationTable, Item: { reservationId, userId, retryCount: Number(retryCount), } } }, { Update: { TableName: EventDetailsTable, Key: {eventId}, ConditionExpression: 'available >

问题 The use case: I have a bid table which holds the bid on Loades. One Load can have multiple Bids. The Bid status is new for every bid. Once the bid is accepted by the Admin(The person who put that Load up for bidding) then I need to change the status for that particular bid as "Accepted" and for other bids on the same Load the status should be "rejected". Table Definition: Bid_id(Which is unique for every record) and Load_id(multiple entries) is my primary and sort key respectively. How do I

问题 My goal is to take daily snapshots of an RDS table and put it in a DynamoDB table. The table should only contain data from a single day. For this have a Data Pipeline set up to query a RDS table and publish the results into S3 in CSV format. Then a HiveActivity imports this CSV into a DynamoDB table by creating external tables for the file and an existing DynamoDB table. This works great, but older entries from the previous day still exist in the DynamoDB table. I want to do this within Data

问题 I am using the new higher level GraphqlAPI class instead of the lower level constructs to create my Appsync api and connect it to a table. this.api = new GraphqlApi(...); The new GraphqlApi instance allows you to simply add datasources: this.api.addDynamoDbDataSource('name', tableRef); If you look at the example code at https://docs.aws.amazon.com/cdk/api/latest/docs/aws-appsync-readme.html, I notice that they do not create a role to grant permission for Appsync to access the table: const

问题 I am using the new higher level GraphqlAPI class instead of the lower level constructs to create my Appsync api and connect it to a table. this.api = new GraphqlApi(...); The new GraphqlApi instance allows you to simply add datasources: this.api.addDynamoDbDataSource('name', tableRef); If you look at the example code at https://docs.aws.amazon.com/cdk/api/latest/docs/aws-appsync-readme.html, I notice that they do not create a role to grant permission for Appsync to access the table: const

问题 I am using the new higher level GraphqlAPI class instead of the lower level constructs to create my Appsync api and connect it to a table. this.api = new GraphqlApi(...); The new GraphqlApi instance allows you to simply add datasources: this.api.addDynamoDbDataSource('name', tableRef); If you look at the example code at https://docs.aws.amazon.com/cdk/api/latest/docs/aws-appsync-readme.html, I notice that they do not create a role to grant permission for Appsync to access the table: const