Package org.apache.drill.exec.alias

Class PersistentAliasRegistry

java.lang.Object

org.apache.drill.exec.alias.PersistentAliasRegistry

All Implemented Interfaces:

AutoCloseable, AliasRegistry

public class PersistentAliasRegistry
extends Object
implements AliasRegistry

Implementation of AliasRegistry that persists aliases tables to the pre-configured persistent store.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PersistentAliasRegistry.StoreProvider

Field Summary

Fields

Modifier and Type	Field	Description
static final String	PUBLIC_ALIASES_KEY

Constructor Summary

Constructors

Constructor	Description
PersistentAliasRegistry(DrillbitContext context, String registryPath)

Method Summary

Modifier and Type	Method	Description
void	close()
void	createPublicAliases()	Creates if required public aliases table.
void	createUserAliases(String userName)	Creates if required aliases table for specified userName.
void	deletePublicAliases()	Deletes public aliases table.
void	deleteUserAliases(String userName)	Deletes aliases table for specified userName.
Iterator<Map.Entry<String,Aliases>>	getAllAliases()	Returns iterator for aliases table entries.
Aliases	getPublicAliases()	Returns public aliases table.
PersistentStore<PersistentAliasesTable>	getStore()
Aliases	getUserAliases(String userName)	Returns aliases table for specified userName.

Methods inherited from class java.lang.Object

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

Field Details

PUBLIC_ALIASES_KEY

public static final String PUBLIC_ALIASES_KEY

See Also:

• Constant Field Values

Constructor Details

PersistentAliasRegistry

public PersistentAliasRegistry(DrillbitContext context,
 String registryPath)

Method Details

getStore

public PersistentStore<PersistentAliasesTable> getStore()

getAllAliases

public Iterator<Map.Entry<String,Aliases>> getAllAliases()

Description copied from interface: AliasRegistry

Returns iterator for aliases table entries.

Specified by:

getAllAliases in interface AliasRegistry

getUserAliases

public Aliases getUserAliases(String userName)

Description copied from interface: AliasRegistry

Returns aliases table for specified userName.

Specified by:

getUserAliases in interface AliasRegistry

Parameters:

userName - name of the user whose aliases table should be obtained

Returns:

aliases table for specified userName

createUserAliases

public void createUserAliases(String userName)

Description copied from interface: AliasRegistry

Creates if required aliases table for specified userName.

Specified by:

createUserAliases in interface AliasRegistry

Parameters:

userName - name of the user whose aliases table should be created

createPublicAliases

public void createPublicAliases()

Description copied from interface: AliasRegistry

Creates if required public aliases table.

Specified by:

createPublicAliases in interface AliasRegistry

deleteUserAliases

public void deleteUserAliases(String userName)

Description copied from interface: AliasRegistry

Deletes aliases table for specified userName.

Specified by:

deleteUserAliases in interface AliasRegistry

Parameters:

userName - name of the user whose aliases table should be removed

deletePublicAliases

public void deletePublicAliases()

Description copied from interface: AliasRegistry

Deletes public aliases table.

Specified by:

deletePublicAliases in interface AliasRegistry

getPublicAliases

public Aliases getPublicAliases()

Description copied from interface: AliasRegistry

Returns public aliases table.

Specified by:

getPublicAliases in interface AliasRegistry

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception