RanVaknin
commented
2 years ago @vbanderov ,
Im not sure what example you used for this. But this looks like a mix of V2 and V3?
From what I can see you are trying to:
- put an item in your table
- retrieve that item from your table. (You used
querybut it seems like you're asking for a single object, so you can usegetinstead)
Put your Item in the DynamoDB table:
import { PutCommand, GetCommand } from "@aws-sdk/lib-dynamodb";
import { ddbDocClient } from "./libs/ddbDocClient.js"; // I initialized mine in a spearate file.
const putParams = {
TableName: "TEST_TABLE",
Item: {
Season: 15,
Episode: 301,
Title: {NULL: true},
},
};
const put = async () => {
try {
const data = await ddbDocClient.send(new PutCommand(putParams));
return data;
} catch (err) {
console.error(err);
}
};
put();
Outputs:
{
'$metadata': {
httpStatusCode: 200,
requestId: 'REDACTED',
extendedRequestId: undefined,
cfId: undefined,
attempts: 1,
totalRetryDelay: 0
},
Attributes: undefined,
ConsumedCapacity: undefined,
ItemCollectionMetrics: undefined
}To Retrieve your item, instead of using query for a single item, I'd use get:
import { PutCommand, GetCommand } from "@aws-sdk/lib-dynamodb";
import { ddbDocClient } from "./libs/ddbDocClient.js";
/*
// Set the parameters
const putParams = {
TableName: "TEST_TABLE",
Item: {
Season: 15,
Episode: 301,
Title: {NULL: true},
},
};
const put = async () => {
try {
const data = await ddbDocClient.send(new PutCommand(putParams));
console.log(data)
return data;
} catch (err) {
console.error(err);
}
};
put();
*/
const getParams = {
TableName: "TEST_TABLE",
Key: {
Season: 15,
Episode: 301,
},
};
const get = async () => {
try {
const response = await ddbDocClient.send(new GetCommand(getParams));
if (!response || !response.Item) {
return null;
} else {
console.log('Code Found:', response.Item);
return response.Item;
}
} catch (err) {
console.error(err);
return null
}
}
get();Outputs:
Code Found: { Season: 15, Title: { NULL: true }, Episode: 301 }
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Describe the bug
When trying to query for a record containing
nullvalue throughDynamoDBDocumentan error is thrown:SDK version number
@aws-sdk/client-dynamodb@3.142.0
Which JavaScript Runtime is this issue in?
Node.js
Details of the browser/Node.js/ReactNative version
v16.16.0
Reproduction Steps
Observed Behavior
An uncaught error is thrown:
Expected Behavior
The item is successfully returned by the query command.
Possible Solution
Probably need to check if value is
nullbefore trying to read property 'S' on it. Not sure where that happens though.Additional Information/Context
No response