org.apache.drill.exec.store.parquet

Class Metadata.ParquetTableMetadataBase

java.lang.Object

org.apache.drill.exec.store.parquet.Metadata.ParquetTableMetadataBase

Direct Known Subclasses:

Metadata.ParquetTableMetadata_v1, Metadata.ParquetTableMetadata_v2, Metadata.ParquetTableMetadata_v3

Enclosing class:

Metadata

public abstract static class Metadata.ParquetTableMetadataBase
extends Object

Basic class for parquet metadata. Inheritors of this class are json serializable structures which contain different metadata versions for an entire parquet directory structure

If any new code changes affect on the metadata files content, please update metadata version in such manner: Bump up metadata major version if metadata structure is changed. Bump up metadata minor version if only metadata content is changed, but metadata structure is the same.

Note: keep metadata versions synchronized with MetadataVersion.Constants

Constructor Summary

Constructors

Constructor and Description
Metadata.ParquetTableMetadataBase()

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	assignFiles(List<? extends Metadata.ParquetFileMetadata> newFiles)
abstract Metadata.ParquetTableMetadataBase	clone()
abstract Integer	getDefinitionLevel(String[] columnName)
abstract List<String>	getDirectories()
abstract String	getDrillVersion()
abstract List<? extends Metadata.ParquetFileMetadata>	getFiles()
abstract String	getMetadataVersion()
abstract org.apache.parquet.schema.OriginalType	getOriginalType(String[] columnName)
abstract org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName	getPrimitiveType(String[] columnName)
abstract Integer	getRepetitionLevel(String[] columnName)
abstract boolean	hasColumnMetadata()
abstract boolean	isRowGroupPrunable()

Methods inherited from class java.lang.Object

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

Constructor Detail

Metadata.ParquetTableMetadataBase

public Metadata.ParquetTableMetadataBase()

Method Detail

getDirectories

public abstract List<String> getDirectories()

getFiles

public abstract List<? extends Metadata.ParquetFileMetadata> getFiles()

assignFiles

public abstract void assignFiles(List<? extends Metadata.ParquetFileMetadata> newFiles)

hasColumnMetadata

public abstract boolean hasColumnMetadata()

getPrimitiveType

public abstract org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName getPrimitiveType(String[] columnName)

getOriginalType

public abstract org.apache.parquet.schema.OriginalType getOriginalType(String[] columnName)

getRepetitionLevel

public abstract Integer getRepetitionLevel(String[] columnName)

getDefinitionLevel

public abstract Integer getDefinitionLevel(String[] columnName)

isRowGroupPrunable

public abstract boolean isRowGroupPrunable()

clone

public abstract Metadata.ParquetTableMetadataBase clone()

Overrides:

clone in class Object

getDrillVersion

public abstract String getDrillVersion()

getMetadataVersion

public abstract String getMetadataVersion()