Mercurial > hg > blitz_stable
annotate src/org/dancres/io/AnnotatingObjectOutputStream.java @ 8:fa7203ea1622
Remove some dead code (Dave Brosius)
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 23 May 2009 11:27:41 +0100 |
parents | 3dc0c5604566 |
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0
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1 package org.dancres.io; |
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2 |
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3 import java.io.IOException; |
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4 import java.io.ObjectOutputStream; |
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5 import java.io.OutputStream; |
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6 |
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7 import java.rmi.server.RMIClassLoader; |
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8 |
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9 import java.util.WeakHashMap; |
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10 import java.util.logging.Logger; |
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11 import java.util.logging.Level; |
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12 |
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13 /** |
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14 Serializes a set of objects, separting annotations into one stream and |
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15 object data into another. This is useful in various situations including |
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16 equality checking where one may not wish to include the codebase |
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17 annotations. |
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18 */ |
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19 public class AnnotatingObjectOutputStream extends ObjectOutputStream { |
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20 private static final Logger theLogger = |
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21 Logger.getLogger("org.dancres.io.AnnotatingObjectOutputStream"); |
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22 |
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23 private static final WeakHashMap theCachedCodebases = new WeakHashMap(); |
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24 |
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25 private ObjectOutputStream theAnnotations; |
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26 |
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27 public AnnotatingObjectOutputStream(OutputStream anObjStream, |
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28 OutputStream anAnnStream) |
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29 throws IOException { |
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30 |
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31 super(anObjStream); |
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32 theAnnotations = new ObjectOutputStream(anAnnStream); |
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33 } |
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34 |
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35 protected void annotateClass(Class aClass) throws IOException { |
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36 // addAnnotation(RMIClassLoader.getClassAnnotation(aClass)); |
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37 if (theLogger.isLoggable(Level.FINEST)) { |
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38 theLogger.log(Level.FINEST, "Annotating " + aClass.getName() + |
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39 ".class with " + getCodebase(aClass)); |
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40 } |
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41 |
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42 addAnnotation(getCodebase(aClass)); |
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43 } |
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44 |
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45 protected void annotateProxyClass(Class aClass) throws IOException { |
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46 // addAnnotation(RMIClassLoader.getClassAnnotation(aClass)); |
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47 if (theLogger.isLoggable(Level.FINEST)) { |
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48 theLogger.log(Level.FINEST, "Annotating proxy " + aClass.getName() + |
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49 ".class with " + getCodebase(aClass)); |
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50 } |
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51 |
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52 addAnnotation(getCodebase(aClass)); |
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53 } |
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54 |
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55 private String getCodebase(Class aClass) { |
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56 CodebaseHolder myCodebase; |
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57 |
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58 synchronized(theCachedCodebases) { |
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59 myCodebase = |
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60 (CodebaseHolder) theCachedCodebases.get(aClass); |
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61 |
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62 if (myCodebase == null) { |
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63 myCodebase = |
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64 new CodebaseHolder(RMIClassLoader.getClassAnnotation(aClass)); |
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65 theCachedCodebases.put(aClass, myCodebase); |
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66 } |
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67 } |
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68 |
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69 return myCodebase.getCodebase(); |
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70 } |
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71 |
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72 private void addAnnotation(String anAnnotation) throws IOException { |
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73 theAnnotations.writeObject(anAnnotation); |
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74 } |
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75 |
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76 public void flush() throws IOException { |
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77 super.flush(); |
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78 theAnnotations.flush(); |
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79 } |
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80 |
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81 public void close() throws IOException { |
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82 super.close(); |
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83 theAnnotations.close(); |
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84 } |
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85 |
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86 private static class CodebaseHolder { |
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87 private String theCodebase; |
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88 |
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89 CodebaseHolder(String aCodebase) { |
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90 theCodebase = aCodebase; |
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91 } |
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92 |
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93 public String getCodebase() { |
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94 return theCodebase; |
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95 } |
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96 } |
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97 } |