cascading.operation

Interface GroupAssertionCall<C>

All Superinterfaces:

OperationCall<C>

All Known Implementing Classes:

ConcreteCall

public interface GroupAssertionCall<C>
extends OperationCall<C>

Interface GroupAssertionCall provides access to the current GroupAssertion invocation arguments.

This interface is generic, allowing the user to set a custom 'context' object when GroupAssertion.start(cascading.flow.FlowProcess, GroupAssertionCall) is called. The OperationCall.setContext(Object) and OperationCall.getContext() methods are inherited from OperationCall.

See Also:

GroupAssertion, OperationCall

Method Summary

Modifier and Type	Method and Description
TupleEntry	getArguments() Returns TupleEntry of argument values.
TupleEntry	getGroup() Returns the current grouping TupleEntry.

Methods inherited from interface cascading.operation.OperationCall

getArgumentFields, getContext, getDeclaredFields, setContext

Method Detail

getGroup

TupleEntry getGroup()

Returns the current grouping TupleEntry.

Returns:

TupleEntry

getArguments

TupleEntry getArguments()

Returns TupleEntry of argument values.

Note that the returned TupleEntry should not be cached (stored in a Collection), nor should the underlying Tuple instance. Where possible Cascading will re-use both TupleEntry and Tuple instances.

To get a safe copy that can be cached, use TupleEntry.getTupleCopy().

Returns:

TupleEntry