| org.openrdf.query.algebra |
|
Query Algebra
|
| Java Source File Name | Type | Comment |
| AggregateOperator.java | Interface | An operator that returns aggregates values. |
| And.java | Class | A boolean AND operator operating on two boolean expressions. |
| BinaryTupleOperator.java | Class | An abstract superclass for binary tuple operators which, by definition, has
two arguments. |
| BinaryValueOperator.java | Class | An abstract superclass for binary value operators which, by definition, has
two arguments. |
| BNodeGenerator.java | Class | A BNode generator, which generates a new BNode for each new call to
BNodeGenerator.getValue . |
| Bound.java | Class | The BOUND function, as defined in SPARQL Query
Language for RDF; checks if a variable is bound. |
| Compare.java | Class | A comparison between two values. |
| CompareAll.java | Class | |
| CompareAny.java | Class | |
| CompareSubQueryValueOperator.java | Class | |
| Count.java | Class | |
| Datatype.java | Class | The DATATYPE function, as defined in SPARQL Query
Language for RDF. |
| Difference.java | Class | The MINUS set operator, which returns the result of the left tuple
expression, except for the results that are also returned by the right tuple
expression. |
| Distinct.java | Class | |
| EmptySet.java | Class | A tuple expression that contains zero solutions. |
| Exists.java | Class | Checks whether the wrapped Query produces any results. |
| Extension.java | Class | An extension operator that can be used to add bindings to solutions whose
values are defined by
ValueExpr value expressions . |
| ExtensionElem.java | Class | |
| Filter.java | Class | The FILTER operator, as defined in SPARQL Query
Language for RDF. |
| FunctionCall.java | Class | A call to an (external) function that operates on zero or more arguments. |
| Group.java | Class | A tuple operator that groups tuples that have a specific set of equivalent
variable bindings, and that can apply aggregate functions on the grouped
results. |
| GroupElem.java | Class | A tuple operator that groups tuples that have a specific set of equivalent
variable bindings, and that can apply aggregate functions on the grouped
results. |
| In.java | Class | Checks whether a certain value is contained in a set of results produced by a
query. |
| Intersection.java | Class | The INTERSECT set operator, which returns the intersection of the result sets
of two tuple expressions. |
| IsBNode.java | Class | |
| IsLiteral.java | Class | |
| IsResource.java | Class | |
| IsURI.java | Class | |
| Join.java | Class | A natural join between two tuple expressions. |
| Label.java | Class | The LABEL function, which selects the label of literals. |
| Lang.java | Class | The LANG function, as defined in SPARQL Query Language
for RDF. |
| LangMatches.java | Class | Checks whether a language tag (e.g. |
| LeftJoin.java | Class | The LeftJoin operator, as defined in SPARQL Query
Language for RDF. |
| Like.java | Class | Compares the string representation of a value expression to a pattern. |
| LocalName.java | Class | The LOCAL NAME function, which selects the local name of URIs. |
| MathExpr.java | Class | A mathematical expression consisting an operator and two arguments. |
| Max.java | Class | |
| Min.java | Class | |
| MultiProjection.java | Class | A "multi-projection" that can produce multiple solutions from a single set of
bindings. |
| Namespace.java | Class | The NAMESPACE function, which selects the namespace of URIs. |
| Not.java | Class | A boolean NOT operator operating on a boolean expressions. |
| Or.java | Class | A boolean OR operator operating on two boolean expressions. |
| Order.java | Class | An order operator that can be used to order bindings as specified by a set of
value expressions. |
| OrderElem.java | Class | |
| Projection.java | Class | A generalized projection (allowing the bindings to be renamed) on a tuple
expression. |
| ProjectionElem.java | Class | |
| ProjectionElemList.java | Class | |
| QueryModelNode.java | Interface | Main interface for all query model nodes. |
| QueryModelNodeBase.java | Class | Base implementation of
QueryModelNode . |
| QueryModelVisitor.java | Interface | An interface for query model visitors, implementing the Visitor pattern. |
| QueryRoot.java | Class | A semantics-less query model node that is used as the root of query model
trees. |
| Regex.java | Class | Compares the string representation of a value expression to a pattern. |
| SameTerm.java | Class | Checks RDF term equality. |
| SingletonSet.java | Class | A tuple expression that contains exactly one solution with zero bindings. |
| Slice.java | Class | The SLICE operator, as defined in SPARQL Query
Language for RDF. |
| StatementPattern.java | Class | A tuple expression that matches a statement pattern against an RDF graph. |
| Str.java | Class | The STR function, as defined in SPARQL Query Language
for RDF; returns the label of literals or the string representation of
URIs. |
| SubQueryValueOperator.java | Class | |
| TupleExpr.java | Interface | An expression that evaluates to RDF tuples. |
| UnaryTupleOperator.java | Class | An abstract superclass for unary tuple operators which, by definition, has
one argument. |
| UnaryValueOperator.java | Class | An abstract superclass for unary value operators which, by definition, has
one argument. |
| Union.java | Class | The UNION set operator, which return the union of the result sets of two
tuple expressions. |
| ValueConstant.java | Class | A ValueExpr with a constant value. |
| ValueExpr.java | Interface | An expressions that evaluates to Value objects. |
| Var.java | Class | A variable that can contain a Value. |