[Feature]: use json path to configure which elements I would like to import

[divite]

Feature description

As a user I would like to be able to import data that I fetched from datahub using the graphql interface into another pimcore instance.

Usually the resulting json file would look something like this:

{
  "data": {
    "getProductListing": {
      "edges": [
        {
          "node": {
            "fullpath": "/products/product1",
            "shortName": "my fancy product",
            "manufacturer": {
              "fullpath": "/manufacturers/MagicMaker"
            }
          }
        },
	...
    ]
  }	
}

Like already possible for XML with the XPath configuration, I would like to be able to configure a json path $..node to strip down the document to the relevant nodes. In this example it would then look as follows and would comply to the expected input format:

[
  {
    "fullpath": "/products/product1",
    "shortName": "my fancy product",
    "manufacturer": {
      "fullpath": "/manufacturers/MagicMaker"
    }
  }
  ,...
  {
    "fullpath": "/products/blackShoes",
    "shortName": "pair of black shoes",
    "manufacturer": {
      "fullpath": "/manufacturers/shoemaker"
    }
  }
]

In addition this would allow to export rather complex data structures via datahub and define several data imports for different data types but using the same import json, dealing with the needed dependencies of the data objects. E.g specifying the json path for the manufacturer in the example above.

[divite]

While trying to get this working I stumbled upon another thing, trying to reduce the manufacturer array to a single attribute value of fullpath. Feel free to follow the discussion over here: pimcore/pimcore#13092

[github-actions]

Thanks a lot for reporting the issue. We did not consider the issue as "Pimcore:Priority", "Pimcore:ToDo" or "Pimcore:Backlog", so we're not going to work on that anytime soon. Please create a pull request to fix the issue if this is a bug report. We'll then review it as quickly as possible. If you're interested in contributing a feature, please contact us first here before creating a pull request. We'll then decide whether we'd accept it or not. Thanks for your understanding.