Package uk.gov.gchq.gaffer.federated.simple.operation.handler

Class EitherOperationHandler<O extends Operation>

java.lang.Object

uk.gov.gchq.gaffer.federated.simple.operation.handler.EitherOperationHandler<O>

All Implemented Interfaces:

AddToCacheHandler<O>, OperationHandler<O>

public class EitherOperationHandler<O extends Operation>
extends Object
implements AddToCacheHandler<O>

Custom handler for operations that could in theory target sub graphs or the federated store directly. Implements the AddToCacheHandler interface so that this can also handle operations that add named operations etc.

Constructor Summary

Constructors

Constructor	Description
EitherOperationHandler(OperationHandler<O> standardHandler)

Method Summary

Modifier and Type	Method	Description
Object	doOperation(O operation, Context context, Store store)	If graph IDs are in the options the operation will be handled by a FederatedOperationHandler, otherwise the original handler will be used e.g.
String	getSuffixCacheName()	We might be handling an Operation that extends AddToCacheHandler so use the default handler for the suffix.

Methods inherited from class java.lang.Object

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

Constructor Detail

EitherOperationHandler

public EitherOperationHandler(OperationHandler<O> standardHandler)

Method Detail

doOperation

public Object doOperation(O operation,
                          Context context,
                          Store store)
                   throws OperationException

If graph IDs are in the options the operation will be handled by a FederatedOperationHandler, otherwise the original handler will be used e.g. executed on the federated store directly.

Specified by:

doOperation in interface OperationHandler<O extends Operation>

Parameters:

operation - the Operation to be executed

context - the operation chain context, containing the user who executed the operation

store - the Store the operation should be run on

Returns:

the output for the operation or null.

Throws:

OperationException - thrown if the operation fails

getSuffixCacheName

public String getSuffixCacheName()

We might be handling an Operation that extends AddToCacheHandler so use the default handler for the suffix.

Specified by:

getSuffixCacheName in interface AddToCacheHandler<O extends Operation>