boolean containsAnd(SqlNode node) {
try {
node.accept(this);
return false;
} catch (AndFinder.Found e) {
return true;
}
}
/**
* Finds an aggregate.
*
* @param node Parse tree to search
* @return First aggregate function in parse tree, or null if not found
*/
public SqlNode findAgg(SqlNode node) {
try {
node.accept(this);
return null;
} catch (Util.FoundOne e) {
Util.swallow(e, null);
return (SqlNode) e.getNode();
}
}