1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.shared.scriptinterpreter;
20
21 import java.io.PrintStream;
22 import java.util.List;
23 import java.util.Map;
24
25 /**
26 * Defines a simple abstraction used to plug-in several script interpreters for the pre-/post-build-hooks. Each
27 * interpreter implementation should be stateless and support reuse.
28 *
29 * @author Benjamin Bentmann
30 */
31 public interface ScriptInterpreter {
32
33 /**
34 * Evaluates the specified script.
35 *
36 * @param script The script contents to evaluate, must not be <code>null</code>.
37 * @param classPath The additional class path for the script interpreter, may be <code>null</code> or empty if only
38 * the plugin realm should be used for the script evaluation. If specified, this class path will precede
39 * the artifacts from the plugin class path.
40 * @param globalVariables The global variables (as a mapping from variable name to value) to define for the script,
41 * may be <code>null</code> if not used.
42 * @param scriptOutput A print stream to redirect any output from the script to, may be <code>null</code> to use
43 * stdout/stderr.
44 * @return The return value from the script, can be <code>null</code>
45 * @throws ScriptEvaluationException If the script evaluation produced an error.
46 */
47 Object evaluateScript(
48 String script,
49 List<String> classPath,
50 Map<String, ? extends Object> globalVariables,
51 PrintStream scriptOutput)
52 throws ScriptEvaluationException;
53 }