Package uk.gov.gchq.gaffer.store.operation.handler.named

Class NamedOperationHandler

java.lang.Object

uk.gov.gchq.gaffer.store.operation.handler.named.NamedOperationHandler

All Implemented Interfaces:

OperationHandler<NamedOperation<?,Object>>, OutputOperationHandler<NamedOperation<?,Object>,Object>

public class NamedOperationHandler
extends Object
implements OutputOperationHandler<NamedOperation<?,Object>,Object>

Operation handler for NamedOperation. Named operations are resolved by the NamedOperationResolver GraphHook. If this handler is invoked then it means the named operation could not be resolved.

Field Summary

Fields

Modifier and Type	Field	Description
static String	THE_NAMED_OPERATION_S_WAS_NOT_FOUND

Constructor Summary

Constructors

Constructor	Description
NamedOperationHandler()

Method Summary

Modifier and Type	Method	Description
Object	doOperation(NamedOperation<?,Object> operation, Context context, Store store)	Execute the given Output operation.

Methods inherited from class java.lang.Object

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

Field Detail

THE_NAMED_OPERATION_S_WAS_NOT_FOUND

public static final String THE_NAMED_OPERATION_S_WAS_NOT_FOUND

See Also:

Constant Field Values

Constructor Detail

NamedOperationHandler

public NamedOperationHandler()

Method Detail

doOperation

public Object doOperation(NamedOperation<?,Object> operation,
                          Context context,
                          Store store)
                   throws OperationException

Description copied from interface: OutputOperationHandler

Execute the given Output operation.

Specified by:

doOperation in interface OperationHandler<NamedOperation<?,Object>>

Specified by:

doOperation in interface OutputOperationHandler<NamedOperation<?,Object>,Object>

Parameters:

operation - the Output 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.

Throws:

OperationException - thrown if the operation fails