All Questions
Tagged with aws-java-sdk-2.x amazon-dynamodb
25 questions
2
votes
2
answers
152
views
What's the cost effective way to retrieve batch DDB Items by LSI sort keys?
I have a DDB table with the following structure:
CustmerID (PK)
emailId (SortKey)
orderId (LSI)
I want to get batch items using AWS DynamoDB Java SDK for the following 2 patterns:
Get Items by a PK ...
- 5,753
1
vote
1
answer
41
views
Getting a number of items from a list by pagination in Dynamodb
I have a dynamodb structure like below:
{
"PK" : "queue#1234#view",
"SK" : "board#1234",
"items" : [
"1234&...
- 283
0
votes
1
answer
795
views
DynamoDB java sdk v2 client batchWrite retries
Does the DynamoDB Java SDKv2 offer a retry strategy for batchWriteItem calls? I'm looking for a retry strategy that retries items that would otherwise be returned as unprocessedItems.
In the DynamoDB ...
- 652
0
votes
1
answer
84
views
Fetch records from DynamoDb db table
I have a Dynamodb records example
{
"cDate":"2024-03-04",
"myList":[
{
"M" : {
"rt":{"N":"1.06"},
...
- 2,922
0
votes
1
answer
534
views
DynamoDB Java SDK - QueryRequest with IN clause
The Javadoc of software.amazon.awssdk.services.dynamodb.model.QueryRequest.expressionAttributeValues() says a following query can be done:
ProductStatus IN (:avail, :back, :disc)
where the values are ...
- 335
1
vote
0
answers
200
views
How to ADD values in a map field in DynamoDB using UpdateItem operation?
I need to constantly increment values for a map field value in DynamoDB. The map will contain keys with counters, and for each update I want to atomically increment the keys. The corner case is that ...
- 1,518
0
votes
1
answer
724
views
AWS Java SDK DynamoDB, how to get attribute values from ExecuteStatementRequest response?
I'm using Java AWS SDK to query a DynamoDB table using ExecuteStatementRequest, but I'm don't know how to fetch the returned attribute values from the response.
Given I have the following query:
var ...
- 1,518
0
votes
1
answer
952
views
How to escape reserved keywords in DynamoDB ExecuteStatementRequest?
I'm trying to issue an update ExecuteStatementRequest using DynamoDB and Java SDK 2.0. I'm struggling to escape keywords that are columns in my table schema.
The following statement:
var response = ...
- 1,518
0
votes
1
answer
1k
views
GROUP BY-Like query in DynamoDB with DynamoDbEnhancedClient
I'm trying to write a Query in DynamoDB with logic similar to a GROUP BY in SQL. Let's consider the following table with partition key simulation_id:
Simulation (Table):
simulation_id_1 - type_1 - ....
- 854
2
votes
1
answer
1k
views
AWS DynamoDb with Optimistic Locking and Batch Write Operations
Can we use DynamoDb optimistic locking with batchWriteItem request? AWS docs on Optimistic locking mention that a ConditionalCheckFailedException is thrown when the version value is different while ...
- 382
0
votes
1
answer
728
views
AWS DynamoDB DynamoDbEnhancedClient Asynchronous?
Are the methods available in DynamoDbEnhancedClient asynchronous? In this documentation, it is mentioned that it is truly asynchronous and it returns CompletableFuture but the java docs mention it ...
- 382
2
votes
1
answer
1k
views
Nested beans with StaticTableSchema & enhanced DynamoDB client from AWS Java SDK 2.x
How do I create a StaticTableSchema for a nested bean (like for the items property here)?
data class Order(
var id: Long = 0L,
var items: List<OrderLineItem> = emptyList(),
…
)
data ...
- 33.6k
2
votes
0
answers
3k
views
Condition expression in a PutItem request is not supported by DynamoDB
I am trying to conditionally write an item to a DynamoDB table.
I am using AWS SDK for Java 2.x. Below is my code:
PutItemEnhancedRequest<AssessmentBean> putItemRequest =
...
- 4,862
11
votes
1
answer
4k
views
Unmarshalling DynamoDB Map<String, AttributeValue> to document-style JSON in AWS Java SDK 2.x
The answers to the question Converting DynamoDB JSON to Standard JSON with Java are obsolete in 2022.
The problem is that both of these imports no longer work:
import com.amazonaws.services.dynamodbv2....
- 11.9k
1
vote
0
answers
740
views
Scan list of maps from dynamodb with Java SDK v2
I am trying to scan a DynamoDB table that has lists of maps as attribute values.
DynamoDB table:
{
"Name": "n",
"Accounts": [
{
"address": "a&...
- 195