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Class Summary | |
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BindingMaker | Produces Binding s from ResultRow s. |
GraphPatternTranslator | Matches a BGP against a collection of TripleRelation s
and returns a collection of NodeRelation s. |
OpTableSQL | An Op that wraps a NodeRelation . |
OpUnionTableSQL | An Op that wraps a union of multiple NodeRelation s. |
PushDownOpFilterVisitor | Visitor for traversing the operator-tree, moving down any filter conditions as far as possible. |
QueryEngineD2RQ | An ARQ query engine for D2RQ-mapped graphs. |
QueryIterTableSQL | A QueryIterator over the bindings produced by a
Relation . |
TransformFilterCNF | Checks if any OpFilter can be split into more
parts by translating it to Conjunctive Normal Form (CNF). |
TransformFilterCNF.DeMorganLawApplyer | Visitor for a filter-expression. |
TransformFilterCNF.DistributiveLawApplyer | Visitor for a filter-expression. |
TransformOpBGP | Translates an OpBGP to an OpUnionTableSQL over a GraphD2RQ. |
VarCollector | Collects the variables mentioned in an Op and its
children. |
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