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

Class OperationChainHandler<OUT>

java.lang.Object

uk.gov.gchq.gaffer.store.operation.handler.OperationChainHandler<OUT>

Type Parameters:

OUT - the output type of the operation chain

All Implemented Interfaces:

OperationHandler<OperationChain<OUT>>, OutputOperationHandler<OperationChain<OUT>,OUT>

Direct Known Subclasses:

OperationChainHandler

public class OperationChainHandler<OUT>
extends Object
implements OutputOperationHandler<OperationChain<OUT>,OUT>

A OperationChainHandler handles OperationChains.

Field Summary

Fields

Modifier and Type	Field	Description
static String	APPLY_CHAIN_OPS_TO_ALL	Context variable to apply the operation options on the chain to all sub operations

Constructor Summary

Constructors

Constructor	Description
OperationChainHandler(OperationChainValidator opChainValidator, List<OperationChainOptimiser> opChainOptimisers)

Method Summary

Modifier and Type	Method	Description
OUT	doOperation(OperationChain<OUT> operationChain, Context context, Store store)	Execute the given Output operation.
<O> OperationChain<O>	prepareOperationChain(OperationChain<O> operationChain, Context context, Store store)

Methods inherited from class java.lang.Object

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

Field Detail

APPLY_CHAIN_OPS_TO_ALL

public static final String APPLY_CHAIN_OPS_TO_ALL

Context variable to apply the operation options on the chain to all sub operations

See Also:

Constant Field Values

Constructor Detail

OperationChainHandler

public OperationChainHandler(OperationChainValidator opChainValidator,
                             List<OperationChainOptimiser> opChainOptimisers)

Method Detail

doOperation

public OUT doOperation(OperationChain<OUT> operationChain,
                       Context context,
                       Store store)
                throws OperationException

Description copied from interface: OutputOperationHandler

Execute the given Output operation.

Specified by:

doOperation in interface OperationHandler<OUT>

Specified by:

doOperation in interface OutputOperationHandler<OperationChain<OUT>,OUT>

Parameters:

operationChain - 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

prepareOperationChain

public <O> OperationChain<O> prepareOperationChain(OperationChain<O> operationChain,
                                                   Context context,
                                                   Store store)