com.bigdata.rdf.sparql.ast.eval

Interface IExternalAST2BOp

public interface IExternalAST2BOp

Interface for an external evaluation of JoinGroupNodes.

Author:

Olaf Hartig

Method Summary

Methods

Modifier and Type	Method and Description
PipelineOp	convertJoinGroup(PipelineOp left, JoinGroupNode joinGroup, Set<IVariable<?>> doneSet, AtomicInteger start, AST2BOpContext ctx) Translate the given join group.
PipelineOp	fastRangeCountJoin(PipelineOp left, List<NV> anns, Predicate<?> pred, DatasetNode dataset, Long cutoffLimitIsIgnored, VarNode fastRangeCountVar, Properties queryHints, AST2BOpContext ctx) Use a FastRangeCountOp.

Method Detail

convertJoinGroup

PipelineOp convertJoinGroup(PipelineOp left,
                          JoinGroupNode joinGroup,
                          Set<IVariable<?>> doneSet,
                          AtomicInteger start,
                          AST2BOpContext ctx)

Translate the given join group.

Parameters:

left -

joinGroup -

doneSet -

start -

ctx -

fastRangeCountJoin

PipelineOp fastRangeCountJoin(PipelineOp left,
                            List<NV> anns,
                            Predicate<?> pred,
                            DatasetNode dataset,
                            Long cutoffLimitIsIgnored,
                            VarNode fastRangeCountVar,
                            Properties queryHints,
                            AST2BOpContext ctx)

Use a FastRangeCountOp.

See Also:

https://github.com/SYSTAP/bigdata-gpu/issues/101