Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
WebappStructureSerializer |
|
| 3.3333333333333335;3,333 |
1 | package org.apache.maven.plugin.war.util; | |
2 | ||
3 | /* | |
4 | * Licensed to the Apache Software Foundation (ASF) under one | |
5 | * or more contributor license agreements. See the NOTICE file | |
6 | * distributed with this work for additional information | |
7 | * regarding copyright ownership. The ASF licenses this file | |
8 | * to you under the Apache License, Version 2.0 (the | |
9 | * "License"); you may not use this file except in compliance | |
10 | * with the License. You may obtain a copy of the License at | |
11 | * | |
12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
13 | * | |
14 | * Unless required by applicable law or agreed to in writing, | |
15 | * software distributed under the License is distributed on an | |
16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
17 | * KIND, either express or implied. See the License for the | |
18 | * specific language governing permissions and limitations | |
19 | * under the License. | |
20 | */ | |
21 | ||
22 | import com.thoughtworks.xstream.XStream; | |
23 | import com.thoughtworks.xstream.io.xml.DomDriver; | |
24 | import org.apache.maven.model.Dependency; | |
25 | import org.codehaus.plexus.util.IOUtil; | |
26 | import org.codehaus.plexus.util.ReaderFactory; | |
27 | import org.codehaus.plexus.util.WriterFactory; | |
28 | ||
29 | import java.io.File; | |
30 | import java.io.IOException; | |
31 | import java.io.Reader; | |
32 | import java.io.Writer; | |
33 | ||
34 | /** | |
35 | * Serializes {@link WebappStructure} back and forth. | |
36 | * | |
37 | * @author Stephane Nicoll | |
38 | * @version $Id: WebappStructureSerializer.java 985593 2010-08-14 22:12:09Z dennisl $ | |
39 | */ | |
40 | public class WebappStructureSerializer | |
41 | { | |
42 | ||
43 | private static final XStream xStream; | |
44 | ||
45 | static | |
46 | { | |
47 | 2 | xStream = new XStream( new DomDriver() ); |
48 | ||
49 | // Register aliases | |
50 | 2 | xStream.alias( "webapp-structure", WebappStructure.class ); |
51 | 2 | xStream.alias( "path-set", PathSet.class ); |
52 | 2 | xStream.alias( "dependency", Dependency.class ); |
53 | ||
54 | 2 | } |
55 | ||
56 | /** | |
57 | * Creates a new instance of the serializer. | |
58 | */ | |
59 | public WebappStructureSerializer() | |
60 | 150 | { |
61 | 150 | } |
62 | ||
63 | ||
64 | /** | |
65 | * Reads the {@link WebappStructure} from the specified file. | |
66 | * | |
67 | * @param file the file containing the webapp structure | |
68 | * @return the webapp structure | |
69 | * @throws IOException if an error occurred while reading the structure | |
70 | */ | |
71 | public WebappStructure fromXml( File file ) | |
72 | throws IOException | |
73 | { | |
74 | 16 | Reader reader = null; |
75 | ||
76 | try | |
77 | { | |
78 | 16 | reader = ReaderFactory.newXmlReader( file ); |
79 | 16 | return (WebappStructure) xStream.fromXML( reader ); |
80 | } | |
81 | finally | |
82 | { | |
83 | 16 | IOUtil.close( reader ); |
84 | } | |
85 | } | |
86 | ||
87 | /** | |
88 | * Saves the {@link WebappStructure} to the specified file. | |
89 | * | |
90 | * @param webappStructure the structure to save | |
91 | * @param targetFile the file to use to save the structure | |
92 | * @throws IOException if an error occurred while saving the webapp structure | |
93 | */ | |
94 | public void toXml( WebappStructure webappStructure, File targetFile ) | |
95 | throws IOException | |
96 | { | |
97 | 24 | Writer writer = null; |
98 | try | |
99 | { | |
100 | 24 | if ( !targetFile.getParentFile().exists() && !targetFile.getParentFile().mkdirs() ) |
101 | { | |
102 | 0 | throw new IOException( |
103 | "Could not create parent [" + targetFile.getParentFile().getAbsolutePath() + "]" ); | |
104 | } | |
105 | ||
106 | 24 | if ( !targetFile.exists() && !targetFile.createNewFile() ) |
107 | { | |
108 | 0 | throw new IOException( "Could not create file [" + targetFile.getAbsolutePath() + "]" ); |
109 | } | |
110 | 24 | writer = WriterFactory.newXmlWriter( targetFile ); |
111 | 24 | xStream.toXML( webappStructure, writer ); |
112 | } | |
113 | finally | |
114 | { | |
115 | 24 | IOUtil.close( writer ); |
116 | 24 | } |
117 | 24 | } |
118 | } |