Package org.aksw.jenax.arq.util.tuple.query

Interface TupleQuery<ComponentType>

Type Parameters:
ComponentType -
All Known Implementing Classes:
TupleQueryImpl
public interface TupleQuery<ComponentType>
A tuple query comprises projection, distinct and constraints on the level of tuple components
Author:
Claus Stadler 11/09/2020

  • Method Details

    • getDimension

      int getDimension()
      The dimension (number of columns) of the conceptual tuple table this query is intended for

    • setDistinct

      TupleQuery<ComponentType> setDistinct(boolean onOrOff)

    • isDistinct

      boolean isDistinct()

    • setConstraint

      TupleQuery<ComponentType> setConstraint(int idx, ComponentType value)

    • getConstraint

      ComponentType getConstraint(int idx)

    • getConstrainedComponents

      Set<Integer> getConstrainedComponents()

    • getPattern

      List<ComponentType> getPattern()

    • getProject

      int[] getProject()
      Baseline tuple query execution on a tuple table. Invokes find(...) on the tupleTable and only afterwards applies filtering, projection and distinct on the obtained stream
      Returns:
      A mutable array for configuration of the projection

    • clearProject

      TupleQuery<ComponentType> clearProject()

    • hasProject

      boolean hasProject()

    • addProject

      TupleQuery<ComponentType> addProject(int... tupleIdxs)

    • setProject

      TupleQuery<ComponentType> setProject(int... tupleIdxs)
      Replaces a projection with the given one
      Parameters:
      tupleIdxs -
      Returns: