Class | Description |
---|---|
BindingMaker | |
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. |