cascading.operation

Interface OperationCall<Context>

All Known Subinterfaces:

AggregatorCall<C>, BufferCall<C>, FilterCall<C>, FunctionCall<C>, GroupAssertionCall<C>, ValueAssertionCall<C>

All Known Implementing Classes:

ConcreteCall

public interface OperationCall<Context>

Method Summary

Modifier and Type	Method and Description
Fields	getArgumentFields() Returns the Fields of the expected arguments TupleEntry.
Context	getContext() Returns the user set context object, C.
Fields	getDeclaredFields() Returns the Fields declared by this operation.
void	setContext(Context context) Sets the user defined 'context' object.

Method Detail

getContext

Context getContext()

Returns the user set context object, C.

Returns:

user defined object

setContext

void setContext(Context context)

Sets the user defined 'context' object.

Parameters:

context - user defined object

getArgumentFields

Fields getArgumentFields()

Returns the Fields of the expected arguments TupleEntry.

Returns:

the argumentFields (type Fields) of this OperationCall object.

getDeclaredFields

Fields getDeclaredFields()

Returns the Fields declared by this operation.

If the original declared fields on the current operation defined a substitution, this value will be the actual resolved fields. That is, if the current operation declared Fields.ARGS this method will return the declared arguments on the operator pipe.

Returns:

the declaredFields (type Fields) of this OperationCall object.