com.amazon.carbonado.spi

Class StoragePool

java.lang.Object

com.amazon.carbonado.util.AbstractPool<java.lang.Class,Storage,RepositoryException>

com.amazon.carbonado.spi.StoragePool

public abstract class StoragePool
extends AbstractPool<java.lang.Class,Storage,RepositoryException>

A concurrent pool of strongly referenced Storage instances mapped by Storable type. Storage instances are lazily created and pooled.

Since:

1.2

Author:

Brian S O'Neill

Constructor Summary

Constructors

Constructor and Description
StoragePool()

Method Summary

Methods

Modifier and Type	Method and Description
protected Storage	create(java.lang.Class type) Return a new value instance.
protected abstract <S extends Storable> Storage<S>	createStorage(java.lang.Class<S> type)
<S extends Storable> Storage<S>	getStorage(java.lang.Class<S> type) Returns a Storage instance for the given Storable type, which is lazily created and pooled.

Methods inherited from class com.amazon.carbonado.util.AbstractPool

clear, get, remove, values

Methods inherited from class java.lang.Object

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

Constructor Detail

StoragePool

public StoragePool()

Method Detail

getStorage

public <S extends Storable> Storage<S> getStorage(java.lang.Class<S> type)
                                       throws MalformedTypeException,
                                              SupportException,
                                              RepositoryException

Returns a Storage instance for the given Storable type, which is lazily created and pooled. If multiple threads are requesting upon the same type concurrently, at most one thread attempts to lazily create the Storage. The others wait for it to become available.

Throws:

MalformedTypeException

SupportException

RepositoryException

create

protected final Storage create(java.lang.Class type)
                        throws SupportException,
                               RepositoryException

Description copied from class: AbstractPool

Return a new value instance.

Specified by:

create in class AbstractPool<java.lang.Class,Storage,RepositoryException>

Throws:

SupportException

RepositoryException

createStorage

protected abstract <S extends Storable> Storage<S> createStorage(java.lang.Class<S> type)
                                                      throws SupportException,
                                                             RepositoryException

Throws:

SupportException

RepositoryException