com.bigdata.rdf.internal.constraints

Interface INeedsMaterialization

All Known Implementing Classes:

AVERAGE, BNodeBOp, CompareBOp, ComputedMaterializationRequirement, ConcatBOp, DatatypeBOp, DateBOp, DigestBOp, EBVBOp, EncodeForURIBOp, FuncBOp, GROUP_CONCAT, IriBOp, IsNumericBOp, LangBOp, LangMatchesBOp, LcaseBOp, MathBOp, MAX, MIN, NowBOp, NumericBOp, RegexBOp, ReplaceBOp, SameTermBOp, StrAfterBOp, StrBeforeBOp, StrBOp, StrcontainsBOp, StrdtBOp, StrendsBOp, StrlangBOp, StrlenBOp, StrstartsBOp, SubstrBOp, SUM, UcaseBOp, UUIDBOp, XsdLongBOp, XsdStrBOp, XsdUnsignedLongBOp

public interface INeedsMaterialization

Some IVValueExpression need materialized terms to perform their evaluation. Those that do can implement this interface, and specify which terms they need materialized.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	INeedsMaterialization.Requirement

Method Summary

Methods

Modifier and Type	Method and Description
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.

Method Detail

getRequirement

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. If it fails to evaluate for a particular solution, then it will be run again after the materialization steps for that solution.