Is there a way of making transactWriteItem return the document it updated?

const transactionParams = {
    ReturnConsumedCapacity: "INDEXES",
    TransactItems: [
      {
        Delete: {
          TableName: reactionTableName,
          Key: {
            "SOME_PK_",
            "SOME_SK_",
          },
          ReturnValues: 'ALL_OLD',
        },
      },
      {
        Update: {
          TableName: reviewTableName,
          Key: { PK: "SOME_PK", SK: "SOME_SK" },
          ReturnValues: 'ALL_OLD',
        },
      },
    ],
  };

  try {
    const result = await docClient.transactWrite(transactionParams).promise();
  } catch (error) {
    context.done(error, null);
  }

For example in the above code get the documents that were touched (before or after update)?

CodePudding user response：

No, TransactWriteItems API does not provide the ability to return values of a modified item, however, you could obtain those values using DynamoDB Streams, otherwise you would need to default to the singleton APIs UpdateItem/DeleteItem which are not ACID compliant together.