| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.openjpa.jdbc.kernel.exps; |
| |
| import org.apache.openjpa.jdbc.kernel.JDBCStore; |
| import org.apache.openjpa.jdbc.meta.ClassMapping; |
| import org.apache.openjpa.jdbc.sql.SQLBuffer; |
| import org.apache.openjpa.kernel.exps.AggregateListener; |
| |
| /** |
| * JDBC extension to the {@link AggregateListener}. |
| * |
| * @author Abe White |
| */ |
| public interface JDBCAggregateListener |
| extends AggregateListener { |
| |
| /** |
| * Append the SQL for this aggregate. |
| * |
| * @param buf the SQL buffer to append to |
| * @param args the values of the arguments given in the filter, or |
| * null if this listener doesn't expect arguments |
| * @param mapping the class mapping for the query's candidate class |
| * @param store the store that owns the query |
| */ |
| public void appendTo(SQLBuffer buf, FilterValue[] args, |
| ClassMapping mapping, JDBCStore store); |
| } |