Ejemplo n.º 1
0
  private void toOlap4j(
      UnionBuilder expression,
      Node current,
      ParseTreeNode partialExpression,
      int level,
      List<QueryHierarchy> dimensions,
      List<HierarchyExpander> expanders) {

    HierarchyExpander expander = expanders.get(level);
    expander.setDrills(current.drills);
    QueryHierarchy h = dimensions.get(level);

    // Creates a list of children to be processed
    List<Member> childrenMembers = new ArrayList<Member>();
    if (current.hasChildren()) {
      for (Node child : current.children) {
        if (!h.isIncluded(child.getMember())) continue;

        Member p = h.getParentMember(child.getMember());
        while (p != null && expander.isDrilled(p)) {
          p = h.getParentMember(p);
        }

        if (p == null) childrenMembers.add(child.getMember());
      }
    }

    // Generates the join of this query hierarchy, appling the drills and removing
    // any member involved in a larger drill position.
    CrossJoinBuilder xJoin = new CrossJoinBuilder();
    xJoin.join(partialExpression);
    xJoin.join(Mdx.except(h.toOlap4j(expander), UnionBuilder.fromMembers(childrenMembers)));
    for (int n = level + 1; n < dimensions.size(); ++n) {
      HierarchyExpander nextExp = expanders.get(n);
      nextExp.setDrills(null);
      QueryHierarchy nh = dimensions.get(n);
      xJoin.join(nh.toOlap4j(nextExp));
    }
    expression.add(xJoin.getJoinNode());

    // Recursively generates expression for larger drill positions.
    for (Member child : childrenMembers) {
      CrossJoinBuilder x = new CrossJoinBuilder();
      x.join(partialExpression);
      x.join(Mdx.member(child));
      toOlap4j(
          expression, current.getChild(child), x.getJoinNode(), level + 1, dimensions, expanders);
    }
  }
Ejemplo n.º 2
0
 public ParseTreeNode toOlap4j(
     List<QueryHierarchy> dimensions, List<HierarchyExpander> expanders) {
   UnionBuilder expression = new UnionBuilder();
   toOlap4j(expression, root, null, 0, dimensions, expanders);
   return expression.getUnionNode();
 }