Package com.tangosol.persistence

Class SafePersistenceWrappers

java.lang.Object

com.tangosol.persistence.SafePersistenceWrappers

public class SafePersistenceWrappers
extends Object

SafePersistenceWrappers provides safe wrapper implementations of persistence layer interfaces that can be used to consolidate error handling across the various persistence layers.

Since:

Coherence 12.1.3

Author:

rhl/jh 2013.07.18

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	SafePersistenceWrappers.FailureContinuationFactory<R,T extends Throwable>	FailureContinuationFactory encapsulates failure continuations to handle unexpected exceptions thrown by implementations of the various persistence layers.
static class	SafePersistenceWrappers.SafePersistenceEnvironment<R,T extends Throwable>	SafePersistenceEnvironment is a wrapper PersistenceEnvironment implementation which protects all operations on the underlying environment (and any PersistenceManger or PersistentStore instances opened through this environment) from unexpected failures, delegating the exception handling to a failure Continuation.
static class	SafePersistenceWrappers.SafePersistenceManager<R,T extends Throwable>	SafePersistenceManager is a wrapper PersistenceManager implementation which protects all operations on the underlying manager (and any PersistentStore instances opened by the manager) from unexpected failures, delegating the exception handling to a failure Continuation.
static class	SafePersistenceWrappers.SafePersistentStore<R,T extends Throwable>	SafePersistentStore is a wrapper PersistentStore implementation which protects all synchronous operations on the underlying store from unexpected failures, delegating the exception handling to a failure Continuation.

Field Summary

Fields

Modifier and Type	Field	Description
static SafePersistenceWrappers.FailureContinuationFactory	DEFAULT_FACTORY	Default failure continuation factory that provides null continuations.

Constructor Summary

Constructors

Constructor	Description
SafePersistenceWrappers()

Method Summary

Modifier and Type	Method	Description
protected static <R,T extends Throwable> SafePersistenceWrappers.FailureContinuationFactory<R,T>	getSimpleFactory(Continuation<? super T> cont)	Return a simple FailureContinuationFactory that uses the specified failure continuation to handle failures at any layer of the persistence implementation.
static <R> com.oracle.coherence.persistence.PersistenceEnvironment<R>	unwrap(com.oracle.coherence.persistence.PersistenceEnvironment<R> env)	Return the underlying (non-"Safe") PersistenceEnvironment.
static <R> com.oracle.coherence.persistence.PersistenceManager<R>	unwrap(com.oracle.coherence.persistence.PersistenceManager<R> mgr)	Return the underlying (non-"Safe") PersistenceManager.
static <R> com.oracle.coherence.persistence.PersistentStore<R>	unwrap(com.oracle.coherence.persistence.PersistentStore<R> store)	Return the underlying (non-"Safe") PersistentStore.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_FACTORY

public static final SafePersistenceWrappers.FailureContinuationFactory DEFAULT_FACTORY

Default failure continuation factory that provides null continuations.

Constructor Detail

SafePersistenceWrappers

public SafePersistenceWrappers()

Method Detail

unwrap

public static <R> com.oracle.coherence.persistence.PersistenceEnvironment<R> unwrap(com.oracle.coherence.persistence.PersistenceEnvironment<R> env)

Return the underlying (non-"Safe") PersistenceEnvironment.

Type Parameters:

R - the type of a raw, environment specific object representation

Parameters:

env - a PersistenceEnvironment

Returns:

the underlying PersistenceEnvironment implementation

unwrap

public static <R> com.oracle.coherence.persistence.PersistenceManager<R> unwrap(com.oracle.coherence.persistence.PersistenceManager<R> mgr)

Return the underlying (non-"Safe") PersistenceManager.

Type Parameters:

R - the type of a raw, environment specific object representation

Parameters:

mgr - a PersistenceManager

Returns:

the underlying PersistenceManager implementation

unwrap

public static <R> com.oracle.coherence.persistence.PersistentStore<R> unwrap(com.oracle.coherence.persistence.PersistentStore<R> store)

Return the underlying (non-"Safe") PersistentStore.

Type Parameters:

R - the type of a raw, environment specific object representation

Parameters:

store - a PersistentStore

Returns:

the underlying PersistentStore implementation

getSimpleFactory

protected static <R,T extends Throwable> SafePersistenceWrappers.FailureContinuationFactory<R,T> getSimpleFactory(Continuation<? super T> cont)

Return a simple FailureContinuationFactory that uses the specified failure continuation to handle failures at any layer of the persistence implementation.

Type Parameters:

R - the type of a raw, environment specific object representation

T - the type of a Throwable failure to protect

Parameters:

cont - the failure continuation

Returns:

a simple FailureContinuationFactory that uses a single common failure continuation