com.bigdata.bop.controller

Class Steps

java.lang.Object

com.bigdata.bop.CoreBaseBOp

com.bigdata.bop.BOpBase

com.bigdata.bop.PipelineOp

com.bigdata.bop.controller.AbstractSubqueryOp

com.bigdata.bop.controller.Steps

All Implemented Interfaces:

BOp, IPropertySet, Serializable, Cloneable

public class Steps
extends AbstractSubqueryOp

STEPS(ops)

 STEPS([],{subqueries=[a,b,c]})
 

Will run the subqueries a, b, and c in sequence. Each subquery will be initialized with a single empty IBindingSet. The output of those subqueries will be routed to the STEPS operator (their parent) unless the subqueries explicitly override this behavior using PipelineOp.Annotations#SINK_REF.

Version:

$Id$

Author:

Bryan Thompson

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.bigdata.bop.controller.AbstractSubqueryOp

AbstractSubqueryOp.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

Constructors

Constructor and Description
Steps(BOp[] args, Map<String,Object> annotations) Shallow copy constructor.
Steps(BOp[] args, NV... annotations)
Steps(Steps op) Deep copy constructor.

Method Summary

Methods inherited from class com.bigdata.bop.controller.AbstractSubqueryOp

eval, getMaxParallelSubqueries

Methods inherited from class com.bigdata.bop.PipelineOp

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

Methods inherited from class com.bigdata.bop.BOpBase

__replaceArg, _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, annotationsToString, annotationValueToString, checkArgs, clone, equals, getEvaluationContext, getId, getProperty, getRequiredProperty, hashCode, indent, isController, mutation, shortenName, toShortString, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Steps

public Steps(Steps op)

Deep copy constructor.

Steps

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

Shallow copy constructor.

Parameters:

args -

annotations -

Steps

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