Package org.openrdf.query.algebra

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

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      String alias = projElemNode.getAlias();
      if (alias != null) {
        // aliased projection element
        extension.addElement(new ExtensionElem(valueExpr, alias));
        projElemList.addElement(new ProjectionElem(alias));
      }
      else if (valueExpr instanceof Var) {
        // unaliased variable
        Var projVar = (Var)valueExpr;
        projElemList.addElement(new ProjectionElem(projVar.getName()));
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        projElemList.addElement(new ProjectionElem(alias));
      }
      else if (valueExpr instanceof Var) {
        // unaliased variable
        Var projVar = (Var)valueExpr;
        projElemList.addElement(new ProjectionElem(projVar.getName()));
      }
      else {
        throw new IllegalStateException("required alias for non-Var projection elements not found");
      }
    }
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    ProjectionElemList projElemList = new ProjectionElemList();

    for (int i = 0; i < node.jjtGetNumChildren(); i++) {
      Var projVar = (Var)node.jjtGetChild(i).jjtAccept(this, null);
      projElemList.addElement(new ProjectionElem(projVar.getName()));
    }

    result = new Projection(result, projElemList);

    if (node.isDistinct()) {
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    List<ProjectionElemList> projList = 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"));

      projList.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"));

      projList.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"));

      projList.add(projElemList);
    }

    if (projList.size() == 1) {
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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 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 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 result;
  }
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