UnboundResolver
The UnboundResolver class provides a consolidated set of inference options for use in LoadTableOptions. It's most useful when the caller knows the definition of the table they want to load, and can provide an explicit mapping of Iceberg columns to Deephaven columns.
Constructors
An UnboundResolver can be constructed using its builder:
definition: Set the Deephaven table definition to use when loading the Iceberg table.putAllColumnInstructions: Add all specified keys and their correspondingColumnInstructionsto the resolver.putColumnInstructions: Add a single key and its correspondingColumnInstructionsto the resolver.schema: Set theSchemaProviderfor the resolver.
Methods
columnInstructions: The mapping of Deephaven table columns to Iceberg table columns.definition: The Deephaven table definition.schema: The schema to use for inference. The default isSchemaProvider.fromCurrent.walk: Walk the resolver with the provided visitor.
Example
The following example constructs an UnboundResolver for the nyc.taxis table with schema specifications that map Iceberg column names to table column names that align with Deephaven's recommended naming conventions. Additionally, because the resolver maps columns to field IDs, it makes the integration more robust against Iceberg schema changes.
The resolver can then be passed into a LoadTableOptions object when loading an Iceberg table into Deephaven.