Data Flow Connector Expressions
Data Flow Connector Expressions allow a specific element (field or container) to be mapped from a document without using an additional Node step. This approach can be used when you want to isolate or extract part of a JSON or XML document. The component may be either an individual field or property or an element and all of its descendants.
How to specify an expression
Connect a Data Flow Connector from the output of a Node that returns a JSON or XML Document to another Node.
Hover the new Flow Connector and click the
fxicon.If sample data is available in the source Property, a tree view will present showing a schema of the source data. Select a field in the document.
When the Workflow runs, instead of the full document injecting in to the target Property, only the specific field that was selected will be injected.
As an alternative to selecting a field from the tree view, you can also manually specify a JSON Path expression instead of selecting a field from the tree view. Note that JSON Path is used even when the source document is XML.