Package io.delta.kernel.unitycatalog.adapters

Class UniformAdapter

Object

io.delta.kernel.unitycatalog.adapters.UniformAdapter

public class UniformAdapter
extends Object

Adapter for Delta Uniform metadata to UniformMetadata.

This adapter extracts Uniform metadata (e.g., Iceberg) from committer properties and provides it in the format expected by Unity Catalog.

The committer properties are provided by the connector which is responsible for computing the Uniform metadata during write operations. The connector injects these properties into Kernel via the CommitMetadata.withCommitterProperties, and Kernel propagates them to the UCCatalogManagedCommitter, which then forwards them to Unity Catalog.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ICEBERG_CONVERTED_DELTA_TIMESTAMP_KEY
static final String	ICEBERG_CONVERTED_DELTA_VERSION_KEY
static final String	ICEBERG_METADATA_LOCATION_KEY

Method Summary

Modifier and Type	Method	Description
static Optional<io.delta.storage.commit.uniform.UniformMetadata>	fromCommitterProperties(Map<String,String> properties)	Extracts Uniform metadata from committer properties.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ICEBERG_METADATA_LOCATION_KEY

public static final String ICEBERG_METADATA_LOCATION_KEY

See Also:

• Constant Field Values

ICEBERG_CONVERTED_DELTA_VERSION_KEY

public static final String ICEBERG_CONVERTED_DELTA_VERSION_KEY

See Also:

• Constant Field Values

ICEBERG_CONVERTED_DELTA_TIMESTAMP_KEY

public static final String ICEBERG_CONVERTED_DELTA_TIMESTAMP_KEY

See Also:

• Constant Field Values

Method Details

fromCommitterProperties

public static Optional<io.delta.storage.commit.uniform.UniformMetadata> fromCommitterProperties(Map<String,String> properties)

Extracts Uniform metadata from committer properties.

Parameters:

properties - the committer properties map

Returns:

an Optional containing the UniformMetadata if all required fields are present, Optional.empty() otherwise