org.springframework.data.gemfire

Interface GemfireCallback<T>

public interface GemfireCallback<T>

Callback interface for Pivotal GemFire code. To be used with GemfireTemplate's execution methods, often as anonymous classes within a method implementation. A typical implementation will call Region.get/put/query to perform some operations on stored objects.

Author:

Costin Leau, John Blum

See Also:

Region

Method Summary

Modifier and Type	Method and Description
T	doInGemfire(org.apache.geode.cache.Region<?,?> region) Gets called by GemfireTemplate.execute(GemfireCallback).

Method Detail

doInGemfire

T doInGemfire(org.apache.geode.cache.Region<?,?> region)
       throws org.apache.geode.GemFireCheckedException,
              org.apache.geode.GemFireException

Gets called by GemfireTemplate.execute(GemfireCallback). Does not need to care about handling transactions or exceptions. Allows a result object created within the callback to be returned, i.e. a domain object or a collection of domain objects. A thrown custom RuntimeException is treated as an application exception: it gets propagated to the caller of the template.

Parameters:

region - the Pivotal GemFire Cache Region upon which the operation of this callback will be performed.

Returns:

a result object, or null if no result.

Throws:

org.apache.geode.GemFireCheckedException - for checked Exceptions occurring in GemFire.

org.apache.geode.GemFireException - for runtime Exceptions occurring in GemFire.

See Also:

GemfireTemplate, Region