Package org.apache.drill.exec.store.sys.store.provider

Class InMemoryStoreProvider

java.lang.Object

org.apache.drill.exec.store.sys.store.provider.InMemoryStoreProvider

All Implemented Interfaces:

AutoCloseable, PersistentStoreProvider

public class InMemoryStoreProvider
extends Object
implements PersistentStoreProvider

Constructor Summary

Constructors

Constructor	Description
InMemoryStoreProvider(int capacity)

Method Summary

Modifier and Type	Method	Description
void	close()
<V> PersistentStore<V>	getOrCreateStore(PersistentStoreConfig<V> config)	Gets or creates a persistent store for the given configuration.
<V> VersionedPersistentStore<V>	getOrCreateVersionedStore(PersistentStoreConfig<V> config)	Override this method if store supports versioning and return versioning instance.
void	start()	Sets up the provider.

Methods inherited from class java.lang.Object

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

Constructor Details

InMemoryStoreProvider

public InMemoryStoreProvider(int capacity)

Method Details

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception

getOrCreateStore

public <V> PersistentStore<V> getOrCreateStore(PersistentStoreConfig<V> config)

Description copied from interface: PersistentStoreProvider

Gets or creates a persistent store for the given configuration. Note that implementors have liberty to cache previous store instances.

Specified by:

getOrCreateStore in interface PersistentStoreProvider

Type Parameters:

V - store value type

Parameters:

config - store configuration

Returns:

persistent store instance

getOrCreateVersionedStore

public <V> VersionedPersistentStore<V> getOrCreateVersionedStore(PersistentStoreConfig<V> config)

Description copied from interface: PersistentStoreProvider

Override this method if store supports versioning and return versioning instance. By default, undefined version wrapper will be used.

Specified by:

getOrCreateVersionedStore in interface PersistentStoreProvider

Type Parameters:

V - store value type

Parameters:

config - store configuration

Returns:

versioned persistent store instance

start

public void start()

Description copied from interface: PersistentStoreProvider

Sets up the provider.

Specified by:

start in interface PersistentStoreProvider