1 /*
2 * Copyright 2006-2007 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
17 package org.springframework.batch.item.file;
18
19 import java.io.Writer;
20 import java.io.IOException;
21
22 /**
23 * Callback interface for writing to a header to a file.
24 *
25 * @author Robert Kasanicky
26 */
27 public interface FlatFileHeaderCallback {
28
29 /**
30 * Write contents to a file using the supplied {@link Writer}. It is not
31 * required to flush the writer inside this method.
32 */
33 void writeHeader(Writer writer) throws IOException;
34 }