public StarTreeIndexNode getMatchingNode(StarTreeIndexNode node, List<Integer> dimensions) {
if (node == null || node.isLeaf()) {
return node;
}
Integer childDimensionName = node.getChildDimensionName();
Integer childDimensionValue = dimensions.get(childDimensionName);
StarTreeIndexNode child = node.getChildren().get(childDimensionValue);
return getMatchingNode(child, dimensions);
}
/** Collects all the StarTree leaves that match the provided dimension values */
private void findMatchingLeaves(
StarTreeIndexNode node, List<Integer> values, Set<StarTreeIndexNode> leaves) {
if (node.isLeaf()) {
leaves.add(node);
} else {
Integer value = values.get(node.getChildDimensionName());
findMatchingLeaves(node.getChildren().get(value), values, leaves);
findMatchingLeaves(node.getChildren().get(StarTreeIndexNode.all()), values, leaves);
}
}
public static void printTree(StarTreeIndexNode node, int level) {
for (int i = 0; i < level; i++) {
System.out.print(" ");
}
System.out.println(node);
if (!node.isLeaf()) {
for (StarTreeIndexNode child : node.getChildren().values()) {
printTree(child, level + 1);
}
}
}