Package io.trino.plugin.deltalake.transactionlog

Class DeltaLakeSchemaSupport

java.lang.Object

io.trino.plugin.deltalake.transactionlog.DeltaLakeSchemaSupport

public final class DeltaLakeSchemaSupport
extends Object

Method Summary

Modifier and Type	Method	Description
static List<DeltaLakeColumnHandle>	extractPartitionColumns(MetadataEntry metadataEntry, TypeManager typeManager)
static List<DeltaLakeColumnHandle>	extractPartitionColumns(List<ColumnMetadata> schema, List<String> canonicalPartitionColumns)
static List<ColumnMetadata>	extractSchema(MetadataEntry metadataEntry, TypeManager typeManager)
static String	serializeSchemaAsJson(List<DeltaLakeColumnHandle> columns)
static String	serializeStatsAsJson(DeltaLakeFileStatistics fileStatistics)
static void	validateType(Type type)

Methods inherited from class java.lang.Object

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

Method Detail

extractPartitionColumns

public static List<DeltaLakeColumnHandle> extractPartitionColumns(MetadataEntry metadataEntry,
                                                                  TypeManager typeManager)

extractPartitionColumns

public static List<DeltaLakeColumnHandle> extractPartitionColumns(List<ColumnMetadata> schema,
                                                                  List<String> canonicalPartitionColumns)

serializeSchemaAsJson

public static String serializeSchemaAsJson(List<DeltaLakeColumnHandle> columns)

validateType

public static void validateType(Type type)

serializeStatsAsJson

public static String serializeStatsAsJson(DeltaLakeFileStatistics fileStatistics)
                                   throws com.fasterxml.jackson.core.JsonProcessingException

Throws:

com.fasterxml.jackson.core.JsonProcessingException

extractSchema

public static List<ColumnMetadata> extractSchema(MetadataEntry metadataEntry,
                                                 TypeManager typeManager)