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Java > Open Source Codes > org > apache > tools > ant > taskdefs > ExecuteStreamHandler


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  */
18
19 package org.apache.tools.ant.taskdefs;
20
21 import java.io.IOException JavaDoc;
22 import java.io.InputStream JavaDoc;
23 import java.io.OutputStream JavaDoc;
24
25 /**
26  * Used by <code>Execute</code> to handle input and output stream of
27  * subprocesses.
28  *
29  * @since Ant 1.2
30  */
31 public interface ExecuteStreamHandler {
32
33     /**
34      * Install a handler for the input stream of the subprocess.
35      *
36      * @param os output stream to write to the standard input stream of the
37      * subprocess
38      * @throws IOException on error
39      */
40     void setProcessInputStream(OutputStream JavaDoc os) throws IOException JavaDoc;
41
42     /**
43      * Install a handler for the error stream of the subprocess.
44      *
45      * @param is input stream to read from the error stream from the subprocess
46      * @throws IOException on error
47      */
48     void setProcessErrorStream(InputStream JavaDoc is) throws IOException JavaDoc;
49
50     /**
51      * Install a handler for the output stream of the subprocess.
52      *
53      * @param is input stream to read from the error stream from the subprocess
54      * @throws IOException on error
55      */
56     void setProcessOutputStream(InputStream JavaDoc is) throws IOException JavaDoc;
57
58     /**
59      * Start handling of the streams.
60      * @throws IOException on error
61      */
62     void start() throws IOException JavaDoc;
63
64     /**
65      * Stop handling of the streams - will not be restarted.
66      */
67     void stop();
68 }
69
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