// $Id: AggregateNode.java 7460 2005-07-12 20:27:29Z steveebersole $
package org.hibernate.hql.ast.tree;
import org.hibernate.hql.ast.util.ColumnHelper;
import org.hibernate.type.Type;
import antlr.SemanticException;
/**
* Represents an aggregate function i.e. min, max, sum, avg.
*
* @author josh Sep 21, 2004 9:22:02 PM
*/
public class AggregateNode extends AbstractSelectExpression implements SelectExpression {
public AggregateNode() {
}
public Type getDataType() {
// Get the function return value type, based on the type of the first argument.
return getSessionFactoryHelper().findFunctionReturnType( getText(), getFirstChild() );
}
public void setScalarColumnText(int i) throws SemanticException {
ColumnHelper.generateSingleScalarColumn( this, i );
}
}
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