com.mysema.query.group.GroupCollector Maven / Gradle / Ivy
/*
* Copyright 2011, Mysema Ltd
*
* Licensed 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 com.mysema.query.group;
/**
* A stateful collector of column values for a group.
*
* @author sasa
* @param Target type (e.g. List, Set)
*/
public interface GroupCollector {
/**
* Add given value to this group
*
* @param o
*/
void add(T o);
/**
* @return Value of this group.
*/
R get();
}