Package org.aksw.jenax.sparql.relation.query

Interface PartitionedQuery

All Superinterfaces:
HasElement
All Known Subinterfaces:
PartitionedQuery1
All Known Implementing Classes:
PartitionedQuery1Impl, PartitionedQueryN
public interface PartitionedQuery extends HasElement
A query where a subset of the mentioned vars are used to partition its result set. The partitioned result set can then serve as the basis for accumulating objects from it - i.e. each partition is the base for an object (which may be a set of objects). TODO Add a feature that allows specification of mappings of blank nodes in construct templates to expressions that remap them to local IDs; i.e. Map<Node, Expr> nodeToIdExpr Conceptually this substitutes bnodes with variables that are bound to an expression CONSTRUCT { ?bnode1 a Foo } { ... ?x . BIND(fn(?x) AS ?bnode1 } This way bnode substitution can be done explicitly in the client Actually this is again the Sponate concept where objects are accumulated using aggregation based on a JSON template (rather than CONSTRUCT/triples template). Back then we had even support to assemble lists from sparql results.
Author:
raven

  • Method Summary

    Modifier and Type
    Method
    Description
    default org.apache.jena.sparql.syntax.Element
    getElement()
    Return the element held by the implementation of this interface
    List<org.apache.jena.sparql.core.Var>
    getPartitionVars()
     
    org.apache.jena.query.Query
    getQuery()
     
    default org.apache.jena.sparql.syntax.Template
    getTemplate()
     

    Methods inherited from interface org.aksw.jenax.sparql.fragment.api.HasElement

    extractQuery, extractTable, holdsQuery, holdsTable, toOp

  • Method Details

    • getQuery

      org.apache.jena.query.Query getQuery()

    • getPartitionVars

      List<org.apache.jena.sparql.core.Var> getPartitionVars()

    • getTemplate

      default org.apache.jena.sparql.syntax.Template getTemplate()

    • getElement

      default org.apache.jena.sparql.syntax.Element getElement()
      Description copied from interface: HasElement
      Return the element held by the implementation of this interface
      Specified by:
      getElement in interface HasElement
      Returns: