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

Class GetSchemaHandler

java.lang.Object

uk.gov.gchq.gaffer.federated.simple.operation.handler.FederatedOperationHandler<P>

uk.gov.gchq.gaffer.federated.simple.operation.handler.FederatedOutputHandler<GetSchema,Schema>

uk.gov.gchq.gaffer.federated.simple.operation.handler.get.GetSchemaHandler

All Implemented Interfaces:

OperationHandler<GetSchema>, OutputOperationHandler<GetSchema,Schema>

public class GetSchemaHandler
extends FederatedOutputHandler<GetSchema,Schema>

Simple handler for merging schemas from multiple graphs.

Field Summary

Fields inherited from class uk.gov.gchq.gaffer.federated.simple.operation.handler.FederatedOperationHandler

OPT_AGGREGATE_ELEMENTS, OPT_EXCLUDE_GRAPH_IDS, OPT_GRAPH_IDS, OPT_SEPARATE_RESULTS, OPT_SHORT_GRAPH_IDS, OPT_SKIP_FAILED_EXECUTE, OPT_USE_DFLT_GRAPH_IDS

Constructor Summary

Constructors

Constructor	Description
GetSchemaHandler()

Method Summary

Modifier and Type	Method	Description
Schema	doOperation(GetSchema operation, Context context, Store store)	Execute the given Operation.

Methods inherited from class java.lang.Object

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

Constructor Detail

GetSchemaHandler

public GetSchemaHandler()

Method Detail

doOperation

public Schema doOperation(GetSchema operation,
                          Context context,
                          Store store)
                   throws OperationException

Description copied from interface: OperationHandler

Execute the given Operation.

Specified by:

doOperation in interface OperationHandler<GetSchema>

Specified by:

doOperation in interface OutputOperationHandler<GetSchema,Schema>

Overrides:

doOperation in class FederatedOutputHandler<GetSchema,Schema>

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