Facilities to externalize
RelNodes to and from XML and JSON format.
ClassDescriptionUtility to dump a rel node plan in dot format.Options for displaying the rel node plan in dot format.Registry of
Enumclasses that can be serialized to JSON.Utilities for converting
RelNodeinto JSON format.Translates a JSON object that represents an input reference into a RexNode.Reads a JSON plan and converts it back to a tree of relational expressions.Callback for a relational expression to dump itself as JSON.Implementation of
RelWriter.Callback for a relational expression to dump in XML format.