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Java > Open Source Codes > com > tc > aspectwerkz > proxy > ClassBytecodeRepository


1 /*
2  * All content copyright (c) 2003-2006 Terracotta, Inc., except as may otherwise be noted in a separate copyright notice. All rights reserved.
3  */
4 package com.tc.aspectwerkz.proxy;
5
6 import java.util.HashMap JavaDoc;
7 import java.util.Map JavaDoc;
8
9 /**
10  * TODO document class
11  *
12  * @author Jonas Bonér
13  */
14 public class ClassBytecodeRepository {
15   // private static final String BYTECODE_DIR = "_pbc";
16 private static final byte[] EMPTY_BYTE_ARRAY = new byte[] {};
17
18   private static final ClassBytecodeRepository soleInstance = new ClassBytecodeRepository();
19
20   // DSO Shared Root
21 private final Map JavaDoc nameToBytecodeMap = new HashMap JavaDoc();
22
23   public static void storeBytecode(final byte[] bytes, final String JavaDoc name) {
24     synchronized (soleInstance.nameToBytecodeMap) {
25       soleInstance.nameToBytecodeMap.put(name, bytes);
26       // File dir = new File(ClassBytecodeRepository.BYTECODE_DIR);
27 // dir.mkdirs();
28 // String fileName = (ClassBytecodeRepository.BYTECODE_DIR + File.separator + name).replace('.', '_');
29 // try {
30 // FileOutputStream os = new FileOutputStream(fileName);
31 // os.write(bytes);
32 // os.close();
33 // } catch (Exception e) {
34 // throw new WrappedRuntimeException(e);
35 // }
36 }
37   }
38
39   public static byte[] findBytecodeBy(final String JavaDoc name) {
40     synchronized (soleInstance.nameToBytecodeMap) {
41       Object JavaDoc bytesOrNull = soleInstance.nameToBytecodeMap.get(name);
42       if (bytesOrNull == null) {
43         return EMPTY_BYTE_ARRAY;
44       } else {
45         return (byte[]) bytesOrNull;
46       }
47
48       // String fileName = ClassBytecodeRepository.BYTECODE_DIR + File.separator + proxyName.replace('.', '_');
49 // File file = new File(fileName);
50 // byte[] bytes = new byte[] {};
51 // try {
52 // InputStream is = new FileInputStream(file);
53 // long length = file.length();
54 // if (length > Integer.MAX_VALUE) { throw new RuntimeException("file to large to fit into a byte array"); }
55 // bytes = new byte[(int) length];
56 // int offset = 0;
57 // int numRead = 0;
58 // while (offset < bytes.length && (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) {
59 // offset += numRead;
60 // }
61 // if (offset < bytes.length) { throw new RuntimeException("could not completely read file " + file.getName()); }
62 // is.close();
63 // } catch (Exception ignore) {
64 // }
65 // return bytes;
66 }
67   }
68 }
69
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