iterator component: iterator. Traverse each value of msg or the specified field in msg to the next node. The traversed field must be an array or a {key:value} type。

Deprecated, use the `for` component instead

Configuration

Field name	Type	Required	Description	Default value
fieldName	string	No	Traversal field name, if empty, traverse the entire msg, support nested way to get msg field value, such as items.value, items	""
jsScript	string	No	JS filter script for each item, optional, default is empty, match all items	""

jsScript:

• function Filter(item,index,metadata)
  • item: The current traversed item
  • index: If it is an array, it represents the current traversed index, if it is a map, it represents the current traversed key
  • metadata: Message metadata
  • Return: true means match, false means not match

Relation Type

• True: If the item satisfies the JsScript condition, the item data will be sent to the next node through the True link
• False: If the item does not satisfy the JsScript condition, the item data will be sent to the next node through the False link
• Success: After the traversal is over, the original msg is sent to the next node through the Success link
• Failure: If the specified field is not found, the js script execution fails or the traversed object is not an array or a {key:value}, it is sent to the Failure link