1 /*
2 * ModeShape (http://www.modeshape.org)
3 * See the COPYRIGHT.txt file distributed with this work for information
4 * regarding copyright ownership. Some portions may be licensed
5 * to Red Hat, Inc. under one or more contributor license agreements.
6 * See the AUTHORS.txt file in the distribution for a full listing of
7 * individual contributors.
8 *
9 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
10 * is licensed to you under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
13 *
14 * ModeShape is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this software; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23 */
24 package org.modeshape.sequencer.java;
25
26 import java.io.InputStream;
27 import org.modeshape.graph.sequencer.SequencerOutput;
28 import org.modeshape.graph.sequencer.StreamSequencer;
29 import org.modeshape.graph.sequencer.StreamSequencerContext;
30 import org.modeshape.sequencer.java.metadata.JavaMetadata;
31
32 public class JavaMetadataSequencer implements StreamSequencer {
33
34 private static final SourceFileRecorder DEFAULT_SOURCE_FILE_RECORDER = new ClassSourceFileRecorder();
35
36 private SourceFileRecorder sourceFileRecorder = DEFAULT_SOURCE_FILE_RECORDER;
37
38 /**
39 * {@inheritDoc}
40 *
41 * @see org.modeshape.graph.sequencer.StreamSequencer#sequence(java.io.InputStream,
42 * org.modeshape.graph.sequencer.SequencerOutput, org.modeshape.graph.sequencer.StreamSequencerContext)
43 */
44 public void sequence( InputStream stream,
45 SequencerOutput output,
46 StreamSequencerContext context ) {
47 try {
48 JavaMetadata javaMetadata = JavaMetadata.instance(stream, JavaMetadataUtil.length(stream), null);
49
50 sourceFileRecorder.record(context, output, javaMetadata);
51
52 } catch (Exception ex) {
53 context.getLogger(getClass()).error(ex, JavaMetadataI18n.errorSequencingFile, context.getInputPath());
54 }
55 }
56
57 /**
58 * Sets the custom {@link SourceFileRecorder} by specifying a class name. This method attempts to instantiate an instance of
59 * the custom {@link SourceFileRecorder} class prior to ensure that the new value represents a valid implementation.
60 *
61 * @param sourceFileRecorderClassName the fully-qualified class name of the new custom class file recorder implementation;
62 * null indicates that {@link ClassSourceFileRecorder the class file recorder} should be used.
63 * @throws ClassNotFoundException if the the class for the {@code SourceFileRecorder} implementation cannot be located
64 * @throws IllegalAccessException if the row factory class or its nullary constructor is not accessible.
65 * @throws InstantiationException if the row factory represents an abstract class, an interface, an array class, a primitive
66 * type, or void; or if the class has no nullary constructor; or if the instantiation fails for some other reason.
67 * @throws ClassCastException if the instantiated class file recorder does not implement the {@link SourceFileRecorder}
68 * interface
69 */
70 public void setSourceFileRecorderClassName( String sourceFileRecorderClassName )
71 throws ClassNotFoundException, IllegalAccessException, InstantiationException {
72
73 if (sourceFileRecorderClassName == null) {
74 this.sourceFileRecorder = DEFAULT_SOURCE_FILE_RECORDER;
75 return;
76 }
77
78 Class<?> sourceFileRecorderClass = Class.forName(sourceFileRecorderClassName);
79 this.sourceFileRecorder = (SourceFileRecorder)sourceFileRecorderClass.newInstance();
80 }
81
82 /**
83 * Sets a custom {@link SourceFileRecorder}. If {@code sourceFileRecorder} is null, then the {@link ClassSourceFileRecorder
84 * class file recorder} will be used.
85 *
86 * @param sourceFileRecorder the new custom class file recorder implementation; null indicates that
87 * {@link ClassSourceFileRecorder the class file recorder} should be used.
88 */
89 public void setSourceFileRecorder( SourceFileRecorder sourceFileRecorder ) {
90 this.sourceFileRecorder = sourceFileRecorder == null ? DEFAULT_SOURCE_FILE_RECORDER : sourceFileRecorder;
91 }
92 }