kayomarz / dynamodb-data-types Goto Github PK

You can create an object like this but you can't increment it using add(). it throws "ValidationException: Invalid UpdateExpression: Syntax error; token: "-", near: "MarketplaceFacilitatorTax-Principal""

{
"srTas.MarketplaceFacilitatorTax-Principal": -7.4
}

Prior to trying out updateExpr(), I have a working set of UpdateItemCommand parameters that includes:

{
  TableName: 'MyTable',
  Key: { PK: { S: 'VDR123' }, SK: { S: 'VEHTESTER165' } },
  UpdateExpression: 'ADD #data.deliveryIds :deliveryIds',
  ExpressionAttributeValues: { ':deliveryIds': { SS: [Array] } },
  ExpressionAttributeNames: { '#data': 'data' },
  ReturnValues: 'UPDATED_NEW'
}

Note the nested attribute 'deliveryIds' in the data element, and that 'data' is a dynamoDB reserved word.

I expected that updateExpr() yield similar UpdateExpression, ExpressionAttributeValues and ExpressionAttributeNames:

const updates = updateExpr()
		.add({'data.deliveryIds': [deliveryId]});
const { UpdateExpression,  ExpressionAttributeValues, ExpressionAttributeNames } = updates.expr();

However, this is the result:

UpdateExpression ADD data.deliveryIds :a
ExpressionAttributeValues { ':a': { SS: [ 'DEL#31415' ] } }
ExpressionAttributeNames undefined

Note that 'data' is not aliased and when used with the UpdateItemCommand, fails.

Am I using updateExpr() incorrectly? or does it not currently support nested with reserved words?

Thanks!

it looks like node/4.1.1 deprecated a lot of the util functions because they no longer work and dynamodb-data-types is using these util functions. so the data mapping are not correct anymore.
is someone working on this yet?

when using remove('TTL') or remove('year') the update expression doesn't handle it.

UpdateExpression =============> "SET test = :a, age = :b REMOVE year"

AWS Exception
ValidationException: Invalid UpdateExpression: Attribute name is a reserved keyword; reserved keyword: year

I need something like this, but I'm just using browser JS, not node.

Thanks for nice work.
I have question that is this module safe to use in production?
As I can see you not maintaing it from last year.
Please Update.

Is it possible to add functionality for ignored fields ?

{
   id: 'abc',
   $ignoredField: 'abc'
}

So at the end only "id" key will be converted.

I'm guessing more people would use this if there were typescript types either in the project or generated in @types-

I understand that the dynamoDB does not allow empty strings or arrays of zero length. Perhaps this lib could remove elements that are empty/null/zero length.

The reason that I'm asking is that I'm using typescript, one of the the beauties of which is interfaces. So my interface requires an attribute even if empty. So currently I have to either not use an interface, not use this lib, or roll up my sleeves and pitch in:)

..although, there would be no way to unwrap into an object that conformed to the interface so the user would have to know that. I found the following stackoverflow discussion and I'm just using a recursive clean function to remove them for now and it's working great.

remove null attribs

API limitation

Walk around :

• wrap it with another object

var objt = { "M": wrapped}; console.log(objt);
var objt = { "L": wrapped}; console.log(objt);

Any chance of building a version for the browser that does not include support for Buffer?