com.bigdata.bop.solutions
Class DropOp

java.lang.Object
  com.bigdata.bop.CoreBaseBOp
      com.bigdata.bop.BOpBase
          com.bigdata.bop.PipelineOp
              com.bigdata.bop.solutions.DropOp

All Implemented Interfaces:

BOp, IPropertySet, Serializable, Cloneable

public class DropOp
extends PipelineOp

Operator drops the identified variables from the solutions

Version:

$Id: DropOp.java 6010 2012-02-10 20:11:20Z thompsonbry $

Author:

Bryan Thompson

See Also:

ProjectionOp, Serialized Form

Nested Class Summary

static interface

DropOp.Annotations

Field Summary

Fields inherited from class com.bigdata.bop.CoreBaseBOp

DEFAULT_INITIAL_CAPACITY

Fields inherited from interface com.bigdata.bop.BOp

NOANNS, NOARGS

Constructor Summary

DropOp(BOp[] args, Map<String,Object> annotations)

DropOp(BOp[] args, NV... annotations)

DropOp(DropOp op)

Method Summary

FutureTask<Void>

eval(BOpContext<IBindingSet> context) Return a FutureTask which computes the operator against the evaluation context.

Methods inherited from class com.bigdata.bop.PipelineOp

assertAtOnceJavaHeapOp, getChunkCapacity, getChunkOfChunksCapacity, getChunkTimeout, getMaxMemory, getMaxParallel, isAtOnceEvaluation, isBlockedEvaluation, isLastPassRequested, isPipelinedEvaluation, isSharedState, newStats

Methods inherited from class com.bigdata.bop.BOpBase

_clearProperty, _set, _setProperty, annotations, annotationsCopy, annotationsEqual, annotationsRef, argIterator, args, argsCopy, arity, clearAnnotations, clearProperty, deepCopy, deepCopy, get, getProperty, setArg, setProperty, setUnboundProperty, toArray, toArray

Methods inherited from class com.bigdata.bop.CoreBaseBOp

annotationsEqual, annotationsToString, checkArgs, clone, equals, getEvaluationContext, getId, getProperty, getRequiredProperty, hashCode, indent, isController, toShortString, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DropOp

public DropOp(DropOp op)

Parameters:

op -

DropOp

public DropOp(BOp[] args,
              Map<String,Object> annotations)

Parameters:

args -

annotations -

DropOp

public DropOp(BOp[] args,
              NV... annotations)

Method Detail

eval

public FutureTask<Void> eval(BOpContext<IBindingSet> context)

Description copied from class: PipelineOp

Return a FutureTask which computes the operator against the evaluation context. The caller is responsible for executing the FutureTask (this gives them the ability to hook the completion of the computation).

Specified by:

eval in class PipelineOp

Parameters:

context - The evaluation context.

Returns:

The FutureTask which will compute the operator's evaluation.