Package org.apache.drill.exec.metastore.store

Class FileSystemMetadataProviderManager

java.lang.Object

org.apache.drill.exec.metastore.store.FileSystemMetadataProviderManager

All Implemented Interfaces:

MetadataProviderManager

public class FileSystemMetadataProviderManager
extends Object
implements MetadataProviderManager

Implementation of MetadataProviderManager which uses file system providers and returns builders for file system based TableMetadataProvider instances.

Constructor Summary

Constructors

Constructor	Description
FileSystemMetadataProviderManager()

Method Summary

Modifier and Type	Method	Description
static TableMetadataProvider	getMetadataProvider(MetadataProviderManager providerManager)	Checks whether specified MetadataProviderManager is not null and returns TableMetadataProvider obtained from specified MetadataProviderManager.
static TableMetadataProvider	getMetadataProviderForSchema(TupleMetadata schema)	Returns TableMetadataProvider which provides specified schema.
SchemaProvider	getSchemaProvider()
DrillStatsTable	getStatsProvider()
TableMetadataProvider	getTableMetadataProvider()
static MetadataProviderManager	init()
void	setSchemaProvider(SchemaProvider schemaProvider)
void	setStatsProvider(DrillStatsTable statsProvider)
void	setTableMetadataProvider(TableMetadataProvider tableMetadataProvider)
boolean	usesMetastore()	Returns true if current MetadataProviderManager instance uses Drill Metastore.

Methods inherited from class java.lang.Object

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

Constructor Details

FileSystemMetadataProviderManager

public FileSystemMetadataProviderManager()

Method Details

init

public static MetadataProviderManager init()

getMetadataProviderForSchema

public static TableMetadataProvider getMetadataProviderForSchema(TupleMetadata schema)

Returns TableMetadataProvider which provides specified schema.

Parameters:

schema - table schema which should be provided

Returns:

TableMetadataProvider which provides specified schema

getMetadataProvider

public static TableMetadataProvider getMetadataProvider(MetadataProviderManager providerManager)

Checks whether specified MetadataProviderManager is not null and returns TableMetadataProvider obtained from specified MetadataProviderManager. Otherwise FileSystemMetadataProviderManager is used to construct TableMetadataProvider.

Parameters:

providerManager - metadata provider manager

Returns:

MetadataProviderManager instance

setSchemaProvider

public void setSchemaProvider(SchemaProvider schemaProvider)

Specified by:

setSchemaProvider in interface MetadataProviderManager

getSchemaProvider

public SchemaProvider getSchemaProvider()

Specified by:

getSchemaProvider in interface MetadataProviderManager

setStatsProvider

public void setStatsProvider(DrillStatsTable statsProvider)

Specified by:

setStatsProvider in interface MetadataProviderManager

getStatsProvider

public DrillStatsTable getStatsProvider()

Specified by:

getStatsProvider in interface MetadataProviderManager

setTableMetadataProvider

public void setTableMetadataProvider(TableMetadataProvider tableMetadataProvider)

Specified by:

setTableMetadataProvider in interface MetadataProviderManager

getTableMetadataProvider

public TableMetadataProvider getTableMetadataProvider()

Specified by:

getTableMetadataProvider in interface MetadataProviderManager

usesMetastore

public boolean usesMetastore()

Description copied from interface: MetadataProviderManager

Returns true if current MetadataProviderManager instance uses Drill Metastore.

Specified by:

usesMetastore in interface MetadataProviderManager

Returns:

true if current MetadataProviderManager instance uses Drill Metastore, false otherwise.