cascading.operation.filter
Class Not

java.lang.Object
  cascading.operation.BaseOperation
      cascading.operation.filter.Not

All Implemented Interfaces:

Filter, Operation, Serializable

public class Not
extends BaseOperation
implements Filter

Class Not is a Filter class that will logically 'not' (negation) the results of the constructor provided Filter instance.

Logically, if Filter.isRemove(cascading.flow.FlowProcess,cascading.operation.FilterCall) returns true for the given instance, this filter will return the opposite, false.

See Also:

And, Xor, Not, Serialized Form

Field Summary

Fields inherited from class cascading.operation.BaseOperation

fieldDeclaration, numArgs, trace

Fields inherited from interface cascading.operation.Operation

ANY

Constructor Summary

Not(Filter filter)
Constructor Not creates a new Not instance.

Method Summary

void	cleanup(FlowProcess flowProcess, OperationCall operationCall) Method cleanup does nothing, and may safely be overridden.
boolean	isRemove(FlowProcess flowProcess, FilterCall filterCall) Method isRemove returns true if input should be removed from the tuple stream.
void	prepare(FlowProcess flowProcess, OperationCall operationCall) Method prepare does nothing, and may safely be overridden.

Methods inherited from class cascading.operation.BaseOperation

getFieldDeclaration, getNumArgs, getTrace, printOperationInternal, toString, toStringInternal

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface cascading.operation.Operation

getFieldDeclaration, getNumArgs

Constructor Detail

Not

public Not(Filter filter)

Constructor Not creates a new Not instance.

Parameters:

filter - of type Filter

Method Detail

prepare

public void prepare(FlowProcess flowProcess,
                    OperationCall operationCall)

Description copied from class: BaseOperation

Method prepare does nothing, and may safely be overridden.

Specified by:

prepare in interface Operation

Overrides:

prepare in class BaseOperation

cleanup

public void cleanup(FlowProcess flowProcess,
                    OperationCall operationCall)

Description copied from class: BaseOperation

Method cleanup does nothing, and may safely be overridden.

Specified by:

cleanup in interface Operation

Overrides:

cleanup in class BaseOperation

isRemove

public boolean isRemove(FlowProcess flowProcess,
                        FilterCall filterCall)

Description copied from interface: Filter

Method isRemove returns true if input should be removed from the tuple stream.

Specified by:

isRemove in interface Filter

Parameters:

flowProcess - of type FlowProcess

filterCall - of type FilterCall

Returns:

boolean

See Also:

Filter.isRemove(cascading.flow.FlowProcess,cascading.operation.FilterCall)