countnode.java

来自「hibernate-3.0.5 中文文档」· Java 代码 · 共 23 行

// $Id: CountNode.java,v 1.11 2005/05/17 17:26:53 oneovthafew Exp $
package org.hibernate.hql.ast;

import antlr.SemanticException;
import org.hibernate.type.Type;

/**
 * Represents a COUNT expression in a select.
 *
 * @author josh Sep 21, 2004 9:23:40 PM
 */
class CountNode extends AbstractSelectExpression implements SelectExpression {
	
	public Type getDataType() {
		return getSessionFactoryHelper().findFunctionReturnType( getText(), null );
	}

	public void setScalarColumnText(int i) throws SemanticException {
		ColumnHelper.generateSingleScalarColumn( this, i );
	}

}