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1   /*
2    * Copyright 2008 the original author or authors.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *     
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.openehealth.ipf.commons.core.modules.api;
17  
18  import java.util.Collection;
19  
20  /**
21   * Aggregates a {@link Collection} of S objects into one T object.
22   * 
23   * @author Christian Ohr
24   * 
25   * @param <S>
26   * @param <T>
27   */
28  public interface Aggregator<S, T> extends Transmogrifier<Collection<S>, T> {
29  
30  }