com.bigdata.rdf.internal.constraints

Class DigestBOp

java.lang.Object

com.bigdata.bop.CoreBaseBOp

com.bigdata.bop.BOpBase

com.bigdata.rdf.internal.constraints.IVValueExpression<IV>

com.bigdata.rdf.internal.constraints.DigestBOp

All Implemented Interfaces:

BOp, IValueExpression<IV>, INeedsMaterialization, IPropertySet, Serializable, Cloneable

public class DigestBOp
extends IVValueExpression<IV>
implements INeedsMaterialization

A Digest expression involving a IValueExpression operand. The operation to be applied to the operands is specified by the DigestBOp.Annotations.OP annotation.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	DigestBOp.Annotations
static class	DigestBOp.DigestOp

Nested classes/interfaces inherited from interface com.bigdata.rdf.internal.constraints.INeedsMaterialization

INeedsMaterialization.Requirement

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
DigestBOp(BOp[] args, Map<String,Object> anns) Required shallow copy constructor.
DigestBOp(DigestBOp op) Constructor required for com.bigdata.bop.BOpUtility#deepCopy(FilterNode).
DigestBOp(IValueExpression<? extends IV> left, DigestBOp.DigestOp op, GlobalAnnotations globals)

Method Summary

Methods

Modifier and Type	Method and Description
IV	get(IBindingSet bs) Return the as bound value of the variable, constant, or expression.
INeedsMaterialization.Requirement	getRequirement() Does the bop always need materialized variables, or can it sometimes operate on inline terms without materialization? If sometimes, we'll run it before the materialization pipeline steps in an effort to avoid unnecessary materialization overhead.
DigestBOp.DigestOp	op()
static String	toHexString(byte[] buf)
String	toString() Return a non-recursive representation of the arguments and annotations for this BOp.

Methods inherited from class com.bigdata.rdf.internal.constraints.IVValueExpression

anns, areGlobalsRequired, asIV, asIV, asLiteral, asValue, get, getAndCheckBound, getAndCheckLiteral, getAndCheckLiteralValue, getLexiconConfiguration, getNamespace, getTimestamp, getValueFactory, literalLabel

Methods inherited from class com.bigdata.bop.BOpBase

__replaceArg, _clearProperty, _set, _setProperty, annotations, annotationsCopy, annotationsEqual, annotationsRef, argIterator, args, argsCopy, arity, clearAnnotations, clearProperty, deepCopy, deepCopy, 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

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.bigdata.bop.IValueExpression

toString

Methods inherited from interface com.bigdata.bop.BOp

annotations, argIterator, args, arity, clone, getEvaluationContext, getId, getProperty, getRequiredProperty, isController, setProperty, toArray, toArray, toShortString

Methods inherited from interface cutthecrap.utils.striterators.IPropertySet

getProperty

Constructor Detail

DigestBOp

public DigestBOp(IValueExpression<? extends IV> left,
         DigestBOp.DigestOp op,
         GlobalAnnotations globals)

Parameters:

left - The left operand.

right - The right operand.

op - The annotation specifying the operation to be performed on those operands.

DigestBOp

public DigestBOp(BOp[] args,
         Map<String,Object> anns)

Required shallow copy constructor.

Parameters:

args - The operands.

op - The operation.

DigestBOp

public DigestBOp(DigestBOp op)

Constructor required for com.bigdata.bop.BOpUtility#deepCopy(FilterNode).

Parameters:

op -

Method Detail

toHexString

public static String toHexString(byte[] buf)

getRequirement

public INeedsMaterialization.Requirement getRequirement()

Description copied from interface: INeedsMaterialization

Does the bop always need materialized variables, or can it sometimes operate on inline terms without materialization? If sometimes, we'll run it before the materialization pipeline steps in an effort to avoid unnecessary materialization overhead. If it fails to evaluate for a particular solution, then it will be run again after the materialization steps for that solution.

Specified by:

getRequirement in interface INeedsMaterialization

get

public IV get(IBindingSet bs)
       throws SparqlTypeErrorException

Description copied from interface: IValueExpression

Return the as bound value of the variable, constant, or expression. The as bound value of an IConstant is the contant's value. The as bound value of an IVariable is the bound value in the given IBindingSet -or- null if the variable is not bound in the IBindingSet.

Specified by:

get in interface IValueExpression<IV>

Parameters:

bs - The binding set.

Returns:

The as bound value of the constant, variable, or expression.

Throws:

SparqlTypeErrorException

op

public DigestBOp.DigestOp op()

toString

public String toString()

Description copied from class: CoreBaseBOp

Return a non-recursive representation of the arguments and annotations for this BOp.

Specified by:

toString in interface BOp

Overrides:

toString in class CoreBaseBOp