Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/remote/ConstrainableAdminProxy.java @ 32:243c74d599bf

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author Dan Creswell <dan.creswell@gmail.com>
date Sat, 12 Jun 2010 10:41:47 +0100
parents 3dc0c5604566
children
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1 package org.dancres.blitz.remote;
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2
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3 import java.io.IOException;
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4 import java.io.ObjectInputStream;
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5 import java.io.InvalidObjectException;
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6
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7 import java.lang.reflect.Method;
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8
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9 import net.jini.id.Uuid;
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10
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11 import net.jini.core.constraint.RemoteMethodControl;
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12 import net.jini.core.constraint.MethodConstraints;
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13
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14 import net.jini.security.proxytrust.ProxyTrustIterator;
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15 import net.jini.security.proxytrust.SingletonProxyTrustIterator;
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16
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17 import net.jini.core.transaction.Transaction;
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18
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19 import net.jini.core.entry.Entry;
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20
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21 import com.sun.jini.outrigger.JavaSpaceAdmin;
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22
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23 import com.sun.jini.proxy.ConstrainableProxyUtil;
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24
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25 import org.dancres.blitz.mangler.MangledEntry;
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26
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27 import org.dancres.util.ReflectUtil;
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28
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29 /**
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30 When the remote stub generated by the exporter implements
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31 RemoteMethodControl, Blitz exports this proxy for Admin duties to support
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32 appropriate constraints etc.
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33 */
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34 public final class ConstrainableAdminProxy extends
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35 AdminProxy implements RemoteMethodControl {
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36
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37 private static final Method[] theMethodMapping = {
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38 ReflectUtil.findMethod(JavaSpaceAdmin.class, "space",
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39 new Class[] {}),
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40 ReflectUtil.findMethod(EntryViewAdmin.class, "getJavaSpaceProxy",
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41 new Class[] {}),
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42 ReflectUtil.findMethod(JavaSpaceAdmin.class, "contents",
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43 new Class[] {Entry.class, Transaction.class}),
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44 ReflectUtil.findMethod(EntryViewAdmin.class, "newView",
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45 new Class[] {MangledEntry[].class,
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46 Transaction.class,
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47 long.class, boolean.class,
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48 long.class, int.class}),
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49 ReflectUtil.findMethod(JavaSpaceAdmin.class, "contents",
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50 new Class[] {Entry.class, Transaction.class,
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51 int.class}),
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52 ReflectUtil.findMethod(EntryViewAdmin.class, "newView",
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53 new Class[] {MangledEntry[].class,
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54 Transaction.class,
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55 long.class, boolean.class,
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56 long.class, int.class})
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57 };
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58
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59
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60 private static AdminServer constrainStub(AdminServer aServer,
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61 MethodConstraints aConstraints) {
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62 RemoteMethodControl myServer = (RemoteMethodControl) aServer;
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63
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64 MethodConstraints myStubConstraints =
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65 ConstrainableProxyUtil.translateConstraints(aConstraints,
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66 theMethodMapping);
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67
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68 myServer.setConstraints(myStubConstraints);
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69 return (AdminServer) myServer;
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70 }
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71
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72 private MethodConstraints theConstraints;
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73
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74 ConstrainableAdminProxy(AdminServer aAdmin, Uuid aUuid) {
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75 super(aAdmin, aUuid);
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76 }
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77
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78 private ConstrainableAdminProxy(AdminServer anAdmin, Uuid aUuid,
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79 MethodConstraints aConstraints) {
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80 super(constrainStub(anAdmin, aConstraints), aUuid);
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81 theConstraints = aConstraints;
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82 }
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83
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84 private ProxyTrustIterator getProxyTrustIterator() {
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85 return new SingletonProxyTrustIterator(theStub);
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86 }
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87
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88 public RemoteMethodControl setConstraints(MethodConstraints aConstraints) {
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89 return new ConstrainableAdminProxy(theStub, theUuid, aConstraints);
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90 }
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91
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92 public MethodConstraints getConstraints() {
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93 return theConstraints;
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94 }
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95
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96 private void readObject(ObjectInputStream anOIS)
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97 throws IOException, ClassNotFoundException {
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98
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99 anOIS.defaultReadObject();
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100
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101 if(! (theStub instanceof RemoteMethodControl) ) {
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102 throw new InvalidObjectException("space does not implement RemoteMethodControl");
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103 }
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104 }
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105 }