Mutation.updatePost.req.vtl

## [Start] Inject @versioned condition.. **
#set( $versionedCondition = {
  "expression": "#version = :expectedVersion",
  "expressionValues": {
      ":expectedVersion":     $util.dynamodb.toDynamoDB($ctx.args.input.expectedVersion)
  },
  "expressionNames": {
      "#version": "version"
  }
} )
#set( $newVersion = $ctx.args.input.expectedVersion + 1 )
$util.qr($ctx.args.input.put("version", $newVersion))
$util.qr($ctx.args.input.remove("expectedVersion"))
## [End] Inject @versioned condition.. **

## ~~~

## Update condition if type is @versioned **
#if( $versionedCondition )
  $util.qr($condition.put("expression", "($condition.expression) AND $versionedCondition.expression"))
  $util.qr($condition.expressionNames.putAll($versionedCondition.expressionNames))
  $util.qr($condition.expressionValues.putAll($versionedCondition.expressionValues))
#end

## ~~~