/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.foundationdb.qp.operator;
import com.foundationdb.qp.row.Row;
public interface UpdateFunction {
/**
* Updates the given row by returning another row with the required modifications.
* @param original the original row, which will remain untouched
* @param context the query context for evaluation
* @param bindings the variable bindings for evaluation
* @return a row of the same type as the original, but different fields
* @throws IllegalArgumentException if the row could not be updated
*/
Row evaluate(Row original, QueryContext context, QueryBindings bindings);
}