Interface ExclusiveTupleExprRenderer

All Superinterfaces:
Cloneable, ExclusiveTupleExpr, FedXTupleExpr, QueryModelNode, QueryRef, Serializable, TupleExpr, VariableExpr
All Known Implementing Classes:
ExclusiveArbitraryLengthPath

public interface ExclusiveTupleExprRenderer extends ExclusiveTupleExpr
A specialization of ExclusiveTupleExpr which provides definitions how the expressions can be rendered to a sub-query.

This is required for the evaluation of sub queries.

Author:
Andreas Schwarte
  • Method Details

    • toQueryString

      String toQueryString(Set<String> varNames, BindingSet bindings)
      Returns a SPARQL string representation of this expression that can be inserted into a SELECT query.

      Implementations are required to create a valid query string for this expression where the given bindings are inserted.

      Parameters:
      varNames - the set of resulting (unbound) variables from this expression
      bindings - the optional input bindings
      Returns:
      the query string part
    • toQueryAlgebra

      TupleExpr toQueryAlgebra(Set<String> varNames, BindingSet bindings)
      Returns a SPARQL algebra representation of this expression that can be inserted into a SELECT TupleExpr

      Implementations are required to create a new equivalent expression or clone, where any provided input bindings are inserted. The free variable names after insertion need to be added to the provided set.

      Parameters:
      varNames - the set of resulting (unbound) variables from this expression
      bindings - the input bindings that need to be inserted
      Returns:
      the algebra expression