Drag and drop between Foundry and Gotham

In certain cases, you may have both a Foundry and Gotham representation of the same real-world object, rendering these object representations synonyms of one another. Synonyms are different resources that accurately represent the same object in the real world. These synonyms can be mapped to each other with type mapping, establishing them as synonymous representations.

To increase compatibility between Foundry and Gotham you can identify existing synonyms by implementing data enrichment. Drag-and-drop data enrichment transforms workflows by discovering mapped synonymous representations across Foundry and Gotham, increasing interoperability between your application and the Palantir platform.

Before proceeding with the tutorial below, ensure that you have reviewed the overview and tutorial on creating drag-and-drop integration points for a basic understanding of drag-and-drop concepts and implementation.

Increase cross-application interoperability with data enrichment

As a sample use case, let's say your application recognizes Gotham object IDs, and you would like to create a workflow for dragging Gotham object ID data from your application to a Foundry application. You might first try to write the Gotham object IDs to the DataTransfer using the dragstart handler below. Note the custom Palantir media type application/x-vnd.palantir.rid.gotham.object:

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function handleDragStart(event) {
    event.dataTransfer.setData(
        "application/x-vnd.palantir.rid.gotham.object",
        JSON.stringify(["ri.gotham.XXXXXXXX", "ri.gotham.YYYYYYYY"...])
    );
    event.dataTransfer.effectAllowed = "move";
}

You might notice that the Foundry drop zones do not "light up" when you try to drag this data on them, indicating that this is not a valid media type for those drop zones. Foundry drop zones will likely not accept this data because the DataTransfer contains a Gotham-specific media type. You can remedy this by implementing data enrichment, so that Foundry synonyms for Gotham objects are identified and added to the DataTransfer. This allows Foundry to accept your dropped data, since a synonymous representation with an accepted media type will now be included in the DataTransfer. Note that this only works if you have type mapping enabled on your enrollment and for the objects you plan to enrich. Refer to the type mapping documentation to learn more.

Context and guidelines

The following sections provide context on how various aspects of data enrichment work. This includes an overview of the service that makes data enrichment possible and when and where to implement enrichment.

Where to add data enrichment

Data enrichment can be added to drag zones or drop zones. It is not necessary to add enrichment on both drag and drop zones in a drag-and-drop workflow. Identify the flow of data between applications to determine where data will be coming from and where it will be going to.

If your application contains drop zones that you want users to drag Gotham and Foundry data to, we recommend enriching data in the drop zone after the drag payload is dropped. This way, your application will not need to recognize both Gotham and Foundry concepts. Instead, your application can accept Gotham or Foundry media types and use synonymous data from data enrichment if the original drag payload was not of an accepted media type.

Alternatively, if you have drag zones in your application that you want users to be able to drag to both Foundry and Gotham drop zones, we recommend enriching your data before adding it to the DataTransfer. This way, your drag payload will be enriched with both Foundry and Gotham media types, allowing Foundry and Gotham drop zones to accept the drag payload.

Requesting enriched data

When implementing data enrichment, you must make a request to Data Bank Service to obtain synonymous data. The Data Bank Service identifies and returns synonymous object identifiers across Foundry and Gotham, enabling cross-platform drag and drop.

If your workflow involves dragging and dropping data between Gotham and Foundry, follow the enrichment tutorial to harness the power of Palantir media types.