Package org.openrdf.query.algebra

Examples of org.openrdf.query.algebra.ProjectionElemList.addElement()

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    ValueExpr constraint = new Or(sameTerms);

    result = new Filter(result, constraint);

    ProjectionElemList projElemList = new ProjectionElemList();
    projElemList.addElement(new ProjectionElem(subjVar.getName(), "subject"));
    projElemList.addElement(new ProjectionElem(predVar.getName(), "predicate"));
    projElemList.addElement(new ProjectionElem(objVar.getName(), "object"));
    result = new Projection(result, projElemList);

    return new Reduced(result);
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    result = new Filter(result, constraint);

    ProjectionElemList projElemList = new ProjectionElemList();
    projElemList.addElement(new ProjectionElem(subjVar.getName(), "subject"));
    projElemList.addElement(new ProjectionElem(predVar.getName(), "predicate"));
    projElemList.addElement(new ProjectionElem(objVar.getName(), "object"));
    result = new Projection(result, projElemList);

    return new Reduced(result);
  }
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    result = new Filter(result, constraint);

    ProjectionElemList projElemList = new ProjectionElemList();
    projElemList.addElement(new ProjectionElem(subjVar.getName(), "subject"));
    projElemList.addElement(new ProjectionElem(predVar.getName(), "predicate"));
    projElemList.addElement(new ProjectionElem(objVar.getName(), "object"));
    result = new Projection(result, projElemList);

    return new Reduced(result);
  }
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                  Group2 group = new Group2(_builder.makeFilterTupleExpr());
                  group.addGroupElement(new GroupElem(_countVar.getName(), new Count(_itemVar)));
                  group.addGroupBindingName(_valueVar.getName());
                 
                  ProjectionElemList projectionElements = new ProjectionElemList();
                  projectionElements.addElement(new ProjectionElem(_valueVar.getName()));
                  projectionElements.addElement(new ProjectionElem(_countVar.getName()));
                 
                  Projection projection = new Projection(group, projectionElements);
                  Order order = "value".equals(_sortMode) ?
                      new Order(projection, new OrderElem(_valueVar, "forward".equals(_sortDirection))) :
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                  group.addGroupElement(new GroupElem(_countVar.getName(), new Count(_itemVar)));
                  group.addGroupBindingName(_valueVar.getName());
                 
                  ProjectionElemList projectionElements = new ProjectionElemList();
                  projectionElements.addElement(new ProjectionElem(_valueVar.getName()));
                  projectionElements.addElement(new ProjectionElem(_countVar.getName()));
                 
                  Projection projection = new Projection(group, projectionElements);
                  Order order = "value".equals(_sortMode) ?
                      new Order(projection, new OrderElem(_valueVar, "forward".equals(_sortDirection))) :
                      new Order(projection, new OrderElem(_countVar, !"forward".equals(_sortDirection)));
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    ExpressionResult expressionResult = computeOutputOnItem(database, builder, valueVar);
        if (expressionResult.valueExpr instanceof Var) {
          Var resultVar = (Var) expressionResult.valueExpr;
         
            ProjectionElemList projectionElements = new ProjectionElemList();
            projectionElements.addElement(new ProjectionElem(resultVar.getName()));
           
            TupleExpr t = builder.makeFilterTupleExpr();
            if (t == null) {
              // TODO[dfhuynh]: This happens if the expression is just "value". I'm not sure what to do here.
              return null;
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      for (Var var : constructVars) {
        // Ignore anonymous and constant vars, these will be handled after
        // the distinct
        if (!var.isAnonymous() && !var.hasValue()) {
          projElemList.addElement(new ProjectionElem(var.getName()));
        }
      }

      result = new Projection(result, projElemList);
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    List<ProjectionElemList> projections = new ArrayList<ProjectionElemList>();

    for (StatementPattern sp : statementPatterns) {
      ProjectionElemList projElemList = new ProjectionElemList();

      projElemList.addElement(new ProjectionElem(sp.getSubjectVar().getName(), "subject"));
      projElemList.addElement(new ProjectionElem(sp.getPredicateVar().getName(), "predicate"));
      projElemList.addElement(new ProjectionElem(sp.getObjectVar().getName(), "object"));

      projections.add(projElemList);
    }
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    for (StatementPattern sp : statementPatterns) {
      ProjectionElemList projElemList = new ProjectionElemList();

      projElemList.addElement(new ProjectionElem(sp.getSubjectVar().getName(), "subject"));
      projElemList.addElement(new ProjectionElem(sp.getPredicateVar().getName(), "predicate"));
      projElemList.addElement(new ProjectionElem(sp.getObjectVar().getName(), "object"));

      projections.add(projElemList);
    }
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    for (StatementPattern sp : statementPatterns) {
      ProjectionElemList projElemList = new ProjectionElemList();

      projElemList.addElement(new ProjectionElem(sp.getSubjectVar().getName(), "subject"));
      projElemList.addElement(new ProjectionElem(sp.getPredicateVar().getName(), "predicate"));
      projElemList.addElement(new ProjectionElem(sp.getObjectVar().getName(), "object"));

      projections.add(projElemList);
    }

    if (projections.size() == 1) {
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