Package | Description |
---|---|
org.eclipse.rdf4j.federated.algebra | |
org.eclipse.rdf4j.query.algebra |
Abstract Query Algebra model.
|
org.eclipse.rdf4j.query.algebra.evaluation.impl | |
org.eclipse.rdf4j.sail.federation.algebra |
Modifier and Type | Class and Description |
---|---|
class |
BoundFiltersNode
A
QueryModelNode for printing the bound filter vars (e.g. |
class |
ConjunctiveFilterExpr
ConjunctiveFilterExpr maintains a list of conjunctive (i.e.
|
class |
EmptyNJoin
Algebra construct representing an empty join.
|
class |
EmptyNUnion
Algebra construct representing an empty union.
|
class |
EmptyStatementPattern
EmptyStatementPattern represents a statement that cannot produce any results for the registered endpoints.
|
class |
ExclusiveArbitraryLengthPath
An
ArbitraryLengthPath node which can be evaluated at a single node. |
class |
ExclusiveGroup
Represents a group of
ExclusiveTupleExpr that can only produce results at a single endpoint, the
StatementSource . |
class |
ExclusiveStatement
Represents a StatementPattern that can only produce results at a single endpoint, the owner.
|
class |
FedXLeftJoin
|
class |
FedXService |
class |
FedXStatementPattern
Base class providing all common functionality for FedX StatementPatterns
|
class |
FilterExpr
FilterExpr maintains information for a particular FILTER expression.
|
class |
NJoin
A tuple expression that represents an nary-Join.
|
class |
NTuple
Base class for any nary-tuple expression
|
class |
NUnion
A tuple expression that represents an nary-Union.
|
class |
PassThroughTupleExpr
Marker
TupleExpr that is used from FedXTupleQuery.evaluate(TupleQueryResultHandler) to allow for
passing through of results to the handler. |
class |
PrecompiledQueryNode
Node representing a precompiled query.
|
class |
SingleSourceQuery
A query which has a single relevant source.
|
class |
StatementSource
A structure representing a relevant source for some expression.
|
class |
StatementSourcePattern
Represents statements that can produce results at a some particular endpoints, the statement sources.
|
class |
TrueStatementPattern
A TrueStatementPattern represents a stmt with no free variables which in addition is available at one of the provided
sources.
|
Modifier and Type | Class and Description |
---|---|
class |
AbstractAggregateOperator
Base class for shared functionality of aggregate operators (e.g.
|
class |
Add |
class |
AggregateOperatorBase
Deprecated.
since 2.0. Use
AbstractAggregateOperator instead. |
class |
And
A boolean AND operator operating on two boolean expressions.
|
class |
ArbitraryLengthPath
A tuple expression that matches a path of arbitrary length against an RDF graph.
|
class |
Avg
The AVG operator as defined in http://www.w3.org/TR/sparql11-query/#aggregates.
|
class |
BinaryTupleOperator
An abstract superclass for binary tuple operators which, by definition, has two arguments.
|
class |
BinaryValueOperator
An abstract superclass for binary value operators which, by definition, has two arguments.
|
class |
BindingSetAssignment |
class |
BNodeGenerator
A BNode generator, which generates a new BNode each time it needs to supply a value.
|
class |
Bound
The BOUND function, as defined in SPARQL Query Language
for RDF; checks if a variable is bound.
|
class |
Clear |
class |
Coalesce |
class |
Compare
A comparison between two values.
|
class |
CompareAll |
class |
CompareAny |
class |
CompareSubQueryValueOperator |
class |
Copy |
class |
Count |
class |
Create |
class |
Datatype
The DATATYPE function, as defined in SPARQL Query
Language for RDF.
|
class |
DeleteData |
class |
DescribeOperator |
class |
Difference
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.
|
class |
Distinct |
class |
EmptySet
A tuple expression that contains zero solutions.
|
class |
Exists
Checks whether the wrapped Query produces any results.
|
class |
Extension
An extension operator that can be used to add bindings to solutions whose values are defined by
value expressions . |
class |
ExtensionElem |
class |
Filter
The FILTER operator, as defined in SPARQL Query
Language for RDF.
|
class |
FunctionCall
A call to an (external) function that operates on zero or more arguments.
|
class |
Group
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.
|
class |
GroupConcat
The GROUP_CONCAT operator as defined in http://www.w3.org/TR/sparql11-query/#aggregates
|
class |
GroupElem
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.
|
class |
If
The IF function, as defined in SPARQL 1.1 Query.
|
class |
In
Checks whether a certain value is contained in a set of results produced by a query.
|
class |
InsertData |
class |
Intersection
The INTERSECT set operator, which returns the intersection of the result sets of two tuple expressions.
|
class |
IRIFunction
The IRI function, as defined in SPARQL 1.1 Query Language
for RDF.
|
class |
IsBNode |
class |
IsLiteral |
class |
IsNumeric
IsNumeric - Boolean operator determining if the supplied expression represents a numeric value.
|
class |
IsResource |
class |
IsURI |
class |
Join
A natural join between two tuple expressions.
|
class |
Label
The LABEL function, which selects the label of literals.
|
class |
Lang
The LANG function, as defined in SPARQL Query Language for
RDF.
|
class |
LangMatches
Checks whether a language tag (e.g.
|
class |
LeftJoin
The LeftJoin operator, as defined in SPARQL Query
Language for RDF.
|
class |
Like
Compares the string representation of a value expression to a pattern.
|
class |
ListMemberOperator
ValueOperator that verifies if the first of its arguments occurs in any of the subsequent arguments.
|
class |
Load |
class |
LocalName
The LOCAL NAME function, which selects the local name of URIs.
|
class |
MathExpr
A mathematical expression consisting an operator and two arguments.
|
class |
Max |
class |
Min |
class |
Modify |
class |
Move |
class |
MultiProjection
A "multi-projection" that can produce multiple solutions from a single set of bindings.
|
class |
Namespace
The NAMESPACE function, which selects the namespace of URIs.
|
class |
NAryValueOperator
An abstract superclass for N-ary value operators.
|
class |
Not
A boolean NOT operator operating on a boolean expressions.
|
class |
Or
A boolean OR operator operating on two boolean expressions.
|
class |
Order
An order operator that can be used to order bindings as specified by a set of value expressions.
|
class |
OrderElem |
class |
Projection
A generalized projection (allowing the bindings to be renamed) on a tuple expression.
|
class |
ProjectionElem |
class |
ProjectionElemList |
class |
QueryModelNodeBase
Deprecated.
since 2.0. Use
AbstractQueryModelNode instead. |
class |
QueryRoot
A semantics-less query model node that is used as the root of query model trees.
|
class |
Reduced |
class |
Regex
Compares the string representation of a value expression to a pattern.
|
class |
SameTerm
Checks RDF term equality.
|
class |
Sample
The SAMPLE operator as defined in http://www.w3.org/TR/sparql11-query/#aggregates
|
class |
Service
The SERVICE keyword as defined in SERVICE
definition.
|
class |
SingletonSet
A tuple expression that contains exactly one solution with zero bindings.
|
class |
Slice
The SLICE operator, as defined in SPARQL Query
Language for RDF.
|
class |
StatementPattern
A tuple expression that matches a statement pattern against an RDF graph.
|
class |
Str
The STR function, as defined in SPARQL Query Language for
RDF; returns the label of literals or the string representation of URIs.
|
class |
SubQueryValueOperator |
class |
Sum
The SUM operator as defined in http://www.w3.org/TR/sparql11-query/#aggregates
|
class |
TripleRef
Triple lookup reference.
|
class |
TupleFunctionCall
A call to a TupleFunction.
|
class |
UnaryTupleOperator
An abstract superclass for unary tuple operators which, by definition, has one argument.
|
class |
UnaryValueOperator
An abstract superclass for unary value operators which, by definition, has one argument.
|
class |
Union
The UNION set operator, which return the union of the result sets of two tuple expressions.
|
class |
ValueConstant
A ValueExpr with a constant value.
|
class |
ValueExprTripleRef |
class |
Var
A variable that can contain a Value.
|
class |
ZeroLengthPath
A tuple expression that matches a path of length zero against an RDF graph.
|
Modifier and Type | Method and Description |
---|---|
AbstractQueryModelNode |
AbstractQueryModelNode.clone() |
Modifier and Type | Class and Description |
---|---|
class |
ExternalSet
Deprecated.
since 3.0.
|
Modifier and Type | Class and Description |
---|---|
class |
AbstractNaryOperator<Expr extends QueryModelNode>
An abstract superclass for operators which have (zero or more) arguments.
|
class |
AbstractNaryTupleOperator
An abstract superclass for n-ary tuple operators which have one or more arguments.
|
class |
NaryJoin
A natural join between two tuple expressions.
|
class |
OwnedTupleExpr
Indicates that the argument should be evaluated in a particular member.
|
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