public BooleanQueryNodeBuilder() {
// empty constructor
}
public BooleanQuery build(QueryNode queryNode) throws QueryNodeException {
BooleanQueryNode booleanNode = (BooleanQueryNode) queryNode;
BooleanQuery bQuery = new BooleanQuery();
List<QueryNode> children = booleanNode.getChildren();
if (children != null) {
for (QueryNode child : children) {
Object obj = child.getTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID);